chore(submodules): bump led-tool for Web Serial fixes

Co-authored-by: Cursor <cursoragent@cursor.com>

db/palette.json

@@ -1 +1 @@
-{"1": ["#FF0000", "#00FF00", "#0000FF", "#FFFF00", "#FF00FF", "#00FFFF", "#FFFFFF", "#000000"], "2": [], "3": [], "4": [], "5": [], "6": [], "7": ["#FF0000", "#00FF00", "#0000FF", "#FFFF00", "#FF00FF", "#00FFFF", "#FFFFFF", "#000000"], "8": [], "9": [], "10": [], "11": [], "12": ["#890b0b", "#0b8935"]}
+{"1":["#FF0000","#00FF00","#0000FF","#FFFF00","#FF00FF","#00FFFF","#FFFFFF","#000000","#050500"],"2":[],"3":[],"4":[],"5":[],"6":[],"7":["#FF0000","#00FF00","#0000FF","#FFFF00","#FF00FF","#00FFFF","#FFFFFF","#000000"],"8":[],"9":[],"10":[],"11":[],"12":["#890b0b","#0b8935"],"13":[],"14":["#E8F4FF","#9ECFFF","#5080C8","#FFFFFF","#B0DCFF","#0A1520","#FF8020","#071018"]}

db/pattern.json

@@ -11,15 +11,13 @@
     "max_colors": 0,
     "supports_manual": true
   },
-  "rainbow": {
-    "n1": "Step Rate",
-    "min_delay": 10,
-    "max_delay": 10000,
-    "max_colors": 0,
-    "supports_manual": true
-  },
   "colour_cycle": {
-    "n1": "Step Rate",
+    "supports_reverse": true,
+    "n1": "Step rate",
+    "mode": {
+      "0": "Scroll palette gradient",
+      "1": "Rainbow wheel (preset colours ignored)"
+    },
     "min_delay": 10,
     "max_delay": 10000,
     "max_colors": 10,
@@ -32,6 +30,7 @@
     "supports_manual": false
   },
   "chase": {
+    "supports_reverse": true,
     "n1": "Colour 1 Length",
     "n2": "Colour 2 Length",
     "n3": "Step 1",
@@ -40,7 +39,11 @@
     "max_delay": 10000,
     "max_colors": 2,
     "has_background": true,
-    "supports_manual": true
+    "supports_manual": true,
+    "mode": {
+      "0": "Two-colour chase",
+      "1": "Marquee dashes (n1 on length, n2 off, n3 step)"
+    }
   },
   "pulse": {
     "n1": "Attack",
@@ -80,7 +83,7 @@
   "flame": {
     "n1": "Min brightness",
     "n2": "Breath period (ms)",
-    "n3": "Spark gap min (ms, 0=default 10–30 s, -1=off)",
+    "n3": "Spark gap min (ms, 0=default 10\u201330 s, -1=off)",
     "n4": "Spark gap max (ms)",
     "min_delay": 10,
     "max_delay": 10000,
@@ -88,8 +91,8 @@
     "supports_manual": false
   },
   "twinkle": {
-    "n1": "Twinkle activity (1–255, higher = more changes)",
+    "n1": "Twinkle activity (1\u2013255, higher = more changes)",
-    "n2": "Density (0–255, higher = more of the strip lit)",
+    "n2": "Density (0\u2013255, higher = more of the strip lit)",
     "n3": "Min adjacent LEDs per twinkle (same as max for fixed length)",
     "n4": "Max adjacent LEDs per twinkle (same as min for fixed length)",
     "min_delay": 10,
@@ -108,58 +111,6 @@
     "has_background": true,
     "supports_manual": true
   },
-  "meteor_rain": {
-    "n1": "Tail length",
-    "n2": "Speed (LEDs per frame)",
-    "n3": "Fade amount (1-255)",
-    "min_delay": 10,
-    "max_delay": 10000,
-    "max_colors": 10,
-    "supports_manual": true
-  },
-  "scanner": {
-    "n1": "Eye width",
-    "n2": "End pause (frames)",
-    "min_delay": 10,
-    "max_delay": 10000,
-    "max_colors": 10,
-    "has_background": true,
-    "supports_manual": true
-  },
-  "gradient_scroll": {
-    "n1": "Scroll step rate",
-    "min_delay": 10,
-    "max_delay": 10000,
-    "max_colors": 10,
-    "supports_manual": true
-  },
-  "comet_dual": {
-    "n1": "Tail length",
-    "n2": "Speed",
-    "n3": "Gap",
-    "max_colors": 10,
-    "min_delay": 10,
-    "max_delay": 10000,
-    "has_background": true,
-    "supports_manual": true
-  },
-  "sparkle_trail": {
-    "n1": "Spark density",
-    "n2": "Decay",
-    "max_colors": 10,
-    "min_delay": 10,
-    "max_delay": 10000,
-    "supports_manual": true
-  },
-  "wave": {
-    "n1": "Wavelength",
-    "n2": "Amplitude",
-    "n3": "Drift speed",
-    "max_colors": 10,
-    "min_delay": 10,
-    "max_delay": 10000,
-    "supports_manual": false
-  },
   "plasma": {
     "n1": "Scale",
     "n2": "Speed",
@@ -169,17 +120,6 @@
     "max_delay": 10000,
     "supports_manual": false
   },
-  "segment_chase": {
-    "n1": "Segment size",
-    "n2": "Phase step",
-    "n3": "Segment phase offset",
-    "n4": "Gap per segment",
-    "max_colors": 10,
-    "min_delay": 10,
-    "max_delay": 10000,
-    "has_background": true,
-    "supports_manual": true
-  },
   "bar_graph": {
     "n1": "Level percent",
     "max_colors": 10,
@@ -188,14 +128,6 @@
     "has_background": true,
     "supports_manual": false
   },
-  "breathing_dual": {
-    "n1": "Phase offset",
-    "n2": "Ease",
-    "max_colors": 10,
-    "min_delay": 10,
-    "max_delay": 10000,
-    "supports_manual": false
-  },
   "strobe_burst": {
     "n1": "Burst count",
     "n2": "Burst gap",
@@ -215,15 +147,6 @@
     "has_background": true,
     "supports_manual": true
   },
-  "fireflies": {
-    "n1": "Count",
-    "n2": "Twinkle speed",
-    "max_colors": 10,
-    "min_delay": 10,
-    "max_delay": 10000,
-    "has_background": true,
-    "supports_manual": true
-  },
   "clock_sweep": {
     "n1": "Hand width",
     "n2": "Marker interval",
@@ -233,37 +156,57 @@
     "has_background": true,
     "supports_manual": true
   },
-  "marquee": {
+  "aurora": {
-    "n1": "On length",
+    "supports_reverse": true,
-    "n2": "Off length",
+    "n1": "Band count (0) or spatial period LEDs (1)",
-    "n3": "Step",
+    "n2": "Shimmer (0) or blend strength (1)",
+    "n3": "Unused (0) or drift speed (1)",
+    "mode": {
+      "0": "Colour bands + shimmer",
+      "1": "Sine northern wave"
+    },
+    "min_delay": 10,
+    "max_delay": 10000,
+    "max_colors": 10,
+    "has_background": true,
+    "supports_manual": true
+  },
+  "icicles": {
+    "supports_reverse": true,
+    "n1": "Anchor spacing (LEDs)",
+    "n2": "Max icicle length (LEDs)",
+    "n3": "Phase step per refresh",
     "max_colors": 10,
     "min_delay": 10,
     "max_delay": 10000,
     "has_background": true,
     "supports_manual": true
   },
-  "aurora": {
+  "blizzard": {
-    "n1": "Band count",
+    "supports_reverse": true,
-    "n2": "Shimmer",
-    "max_colors": 10,
-    "min_delay": 10,
-    "max_delay": 10000,
-    "supports_manual": false
-  },
-  "snowfall": {
     "n1": "Flake density",
     "n2": "Fall speed",
+    "n3": "Wind (128 = centred; lower/raise for drift bias)",
     "max_colors": 10,
     "min_delay": 10,
     "max_delay": 10000,
     "has_background": true,
     "supports_manual": true
   },
-  "heartbeat": {
+  "rime": {
-    "n1": "Pulse 1 ms",
+    "n1": "Crystallisation rate",
-    "n2": "Pulse 2 ms",
+    "n2": "Melt (decay) per refresh",
-    "n3": "Pause ms",
+    "n3": "Spark cap (LEDs refreshed per cycle)",
+    "max_colors": 10,
+    "min_delay": 10,
+    "max_delay": 10000,
+    "has_background": true,
+    "supports_manual": true
+  },
+  "candle_glow": {
+    "n1": "Candle count",
+    "n2": "Glow width (LEDs)",
+    "n3": "Flicker strength",
     "max_colors": 10,
     "min_delay": 10,
     "max_delay": 10000,
@@ -287,5 +230,51 @@
     "min_delay": 10,
     "max_delay": 10000,
     "supports_manual": false
+  },
+  "meteor": {
+    "supports_reverse": true,
+    "n1": "Tail length (0–1) or eye width (2)",
+    "n2": "Speed (LEDs per frame)",
+    "n3": "Fade amount (0), comet gap (1), or end pause frames (2)",
+    "mode": {
+      "0": "Fading meteor",
+      "1": "Dual comets",
+      "2": "Bouncing scanner"
+    },
+    "min_delay": 10,
+    "max_delay": 10000,
+    "max_colors": 10,
+    "has_background": true,
+    "supports_manual": true
+  },
+  "particles": {
+    "supports_reverse": true,
+    "n1": "Flake density (0) or spawn rate (1)",
+    "n2": "Fall speed (LEDs per frame)",
+    "n3": "Unused (0) or streak length (1)",
+    "mode": {
+      "0": "Snowfall flakes",
+      "1": "Starfall streaks"
+    },
+    "min_delay": 10,
+    "max_delay": 10000,
+    "max_colors": 10,
+    "has_background": true,
+    "supports_manual": true
+  },
+  "sparkle": {
+    "n1": "Spark density (0–1) or firefly count (2)",
+    "n2": "Trail decay (0) or twinkle speed (2)",
+    "n3": "Ice halo width LEDs (1); unused in 0 and 2",
+    "mode": {
+      "0": "Sparkle trail",
+      "1": "Ice burst + halo",
+      "2": "Fireflies"
+    },
+    "min_delay": 10,
+    "max_delay": 10000,
+    "max_colors": 10,
+    "has_background": true,
+    "supports_manual": true
   }
 }

db/profile.json

@@ -1 +1 @@
-{"1": {"name": "default", "type": "zones", "zones": ["1", "8"], "scenes": [], "palette_id": "1"}, "2": {"name": "test", "type": "zones", "zones": ["6", "7"], "scenes": [], "palette_id": "12"}}
+{"1":{"name":"default","type":"zones","zones":["1","9","8","10"],"scenes":[],"palette_id":"1"},"2":{"name":"test","type":"zones","zones":["6","7"],"scenes":[],"palette_id":"12"},"3":{"name":"Winter","type":"zones","zones":["11","12"],"scenes":[],"palette_id":"14"}}

pyproject.toml

@@ -1,3 +1,5 @@
 [tool.pytest.ini_options]
 testpaths = ["tests"]
-python_files = ["test_endpoints_pytest.py"]
+python_files = ["test_*.py"]
+# ``tests/models/`` is a package name clash with ``src/models``; run via tests/models/run_all.py
+norecursedirs = ["models"]

scripts/create_winter_profile.py

@@ -0,0 +1,419 @@
+#!/usr/bin/env python3
+"""Add Winter profile: 6-light 2x3 grid, presets, and sequences."""
+
+from __future__ import annotations
+
+import json
+from copy import deepcopy
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+DB = ROOT / "db"
+
+PROFILE_ID = "3"
+PALETTE_ID = "14"
+ZONE_PRESETS_ID = "11"
+ZONE_SEQUENCES_ID = "12"
+
+# 2x3 grid device MACs (placeholders — assign real devices in the UI)
+DEVICE_MACS = [
+    "a0b100000001",  # r0c0 top-left
+    "a0b100000002",  # r0c1
+    "a0b100000003",  # r0c2
+    "a0b100000004",  # r1c0 bottom-left
+    "a0b100000005",  # r1c1
+    "a0b100000006",  # r1c2
+]
+
+GROUP_CELL = {
+    "a0b100000001": "6",
+    "a0b100000002": "7",
+    "a0b100000003": "8",
+    "a0b100000004": "9",
+    "a0b100000005": "10",
+    "a0b100000006": "11",
+}
+GROUP_TOP_ROW = "12"
+GROUP_BOTTOM_ROW = "13"
+GROUP_COL_LEFT = "14"
+GROUP_COL_MID = "15"
+GROUP_COL_RIGHT = "16"
+GROUP_ALL = "17"
+
+PRESET_OFF = "78"
+PRESET_TWINKLE = "79"
+PRESET_ICICLES = "80"
+PRESET_BLIZZARD = "81"
+PRESET_RIME = "82"
+PRESET_AURORA = "83"
+PRESET_STARFALL = "84"
+PRESET_SPARKLE = "85"
+PRESET_COOL_WHITE = "86"
+PRESET_CHASE_ICE = "87"
+
+SEQ_CASCADE = "12"
+SEQ_ROWS = "13"
+SEQ_COLUMNS = "14"
+SEQ_BLIZZARD_ALL = "15"
+SEQ_ROTATION = "16"
+
+
+def load_json(name: str) -> dict:
+    path = DB / f"{name}.json"
+    return json.loads(path.read_text(encoding="utf-8"))
+
+
+def save_json(name: str, data: dict) -> None:
+    path = DB / f"{name}.json"
+    path.write_text(json.dumps(data, separators=(",", ":")), encoding="utf-8")
+
+
+def preset_skeleton(name: str, pattern: str, colors: list, **extra) -> dict:
+    doc = {
+        "name": name,
+        "pattern": pattern,
+        "colors": colors,
+        "brightness": 220,
+        "delay": 80,
+        "auto": True,
+        "n1": 0,
+        "n2": 0,
+        "n3": 0,
+        "n4": 0,
+        "n5": 0,
+        "n6": 0,
+        "n7": 0,
+        "n8": 0,
+        "profile_id": PROFILE_ID,
+        "background": "#0A1520",
+        "manual_beat_n": 1,
+    }
+    doc.update(extra)
+    if "palette_refs" not in doc and pattern not in ("on", "off"):
+        doc["palette_refs"] = [None] * len(colors)
+    return doc
+
+
+def seq_doc(
+    name: str,
+    lanes: list,
+    lanes_group_ids: list,
+    *,
+    loop: bool = True,
+    simulated_bpm: int = 90,
+) -> dict:
+    steps = [step for lane in lanes for step in lane]
+    return {
+        "name": name,
+        "profile_id": PROFILE_ID,
+        "group_ids": [GROUP_ALL],
+        "lanes": lanes,
+        "lanes_group_ids": lanes_group_ids,
+        "advance_mode": "beats",
+        "steps": steps,
+        "step_duration_ms": 3000,
+        "simulated_bpm": simulated_bpm,
+        "sequence_transition": 500,
+        "loop": loop,
+    }
+
+
+def main() -> None:
+    profiles = load_json("profile")
+    palettes = load_json("palette")
+    groups = load_json("group")
+    devices = load_json("device")
+    zones = load_json("zone")
+    sequences = load_json("sequence")
+    presets = load_json("preset")
+
+    labels = [
+        ("winter top-left", 0),
+        ("winter top-centre", 1),
+        ("winter top-right", 2),
+        ("winter bottom-left", 3),
+        ("winter bottom-centre", 4),
+        ("winter bottom-right", 5),
+    ]
+
+    profiles[PROFILE_ID] = {
+        "name": "Winter",
+        "type": "zones",
+        "zones": [ZONE_PRESETS_ID, ZONE_SEQUENCES_ID],
+        "scenes": [],
+        "palette_id": PALETTE_ID,
+    }
+
+    palettes[PALETTE_ID] = [
+        "#E8F4FF",
+        "#9ECFFF",
+        "#5080C8",
+        "#FFFFFF",
+        "#B0DCFF",
+        "#0A1520",
+        "#FF8020",
+        "#071018",
+    ]
+
+    for mac, (label, _idx) in zip(DEVICE_MACS, labels):
+        devices[mac] = {
+            "id": mac,
+            "name": label,
+            "type": "led",
+            "transport": "wifi",
+            "address": "",
+            "default_pattern": None,
+            "zones": [],
+            "output_brightness": 255,
+            "wifi_color_order": "rgb",
+            "wifi_startup_mode": "default",
+        }
+
+    def group_row(gid: str, name: str, macs: list) -> None:
+        groups[gid] = {
+            "name": name,
+            "devices": macs,
+            "profile_id": PROFILE_ID,
+            "wifi_color_order": "rgb",
+            "wifi_startup_mode": "default",
+            "output_brightness": 255,
+            "pattern": "on",
+            "colors": ["000000", "E8F4FF"],
+            "brightness": 100,
+            "delay": 100,
+            "step_offset": 0,
+            "step_increment": 1,
+            "n1": 0,
+            "n2": 0,
+            "n3": 0,
+            "n4": 0,
+            "n5": 0,
+            "n6": 0,
+            "n7": 0,
+            "n8": 0,
+        }
+
+    for mac, gid in zip(DEVICE_MACS, GROUP_CELL.values()):
+        group_row(gid, labels[DEVICE_MACS.index(mac)][0], [mac])
+
+    group_row(GROUP_TOP_ROW, "winter top row", DEVICE_MACS[:3])
+    group_row(GROUP_BOTTOM_ROW, "winter bottom row", DEVICE_MACS[3:])
+    group_row(GROUP_COL_LEFT, "winter left column", [DEVICE_MACS[0], DEVICE_MACS[3]])
+    group_row(GROUP_COL_MID, "winter centre column", [DEVICE_MACS[1], DEVICE_MACS[4]])
+    group_row(GROUP_COL_RIGHT, "winter right column", [DEVICE_MACS[2], DEVICE_MACS[5]])
+    group_row(GROUP_ALL, "winter grid (all)", list(DEVICE_MACS))
+
+    presets[PRESET_OFF] = preset_skeleton("winter off", "off", [], brightness=0, delay=100)
+    presets[PRESET_TWINKLE] = preset_skeleton(
+        "winter twinkle",
+        "twinkle",
+        ["#78C8FF", "#508CFF", "#B478FF", "#64DCE8", "#A0C8FF"],
+        n1=150,
+        n2=20,
+        n4=10,
+        delay=100,
+    )
+    presets[PRESET_ICICLES] = preset_skeleton(
+        "winter icicles",
+        "icicles",
+        ["#F0F8FF", "#9ECFFF", "#FFFFFF"],
+        n1=14,
+        n2=11,
+        n3=1,
+        delay=80,
+    )
+    presets[PRESET_BLIZZARD] = preset_skeleton(
+        "winter blizzard",
+        "blizzard",
+        ["#FFFFFF", "#CDE8FF", "#AACCF5"],
+        n1=110,
+        n2=2,
+        n3=140,
+        delay=45,
+    )
+    presets[PRESET_RIME] = preset_skeleton(
+        "winter rime",
+        "rime",
+        ["#E8F4FF", "#FFFFFF", "#B8DCF8"],
+        n1=40,
+        n2=18,
+        n3=4,
+        delay=120,
+    )
+    presets[PRESET_AURORA] = preset_skeleton(
+        "winter aurora",
+        "aurora",
+        ["#183050", "#5090C8", "#C8E8FF"],
+        n1=22,
+        n2=210,
+        n6=1,
+        delay=90,
+    )
+    presets[PRESET_STARFALL] = preset_skeleton(
+        "winter starfall",
+        "particles",
+        ["#FFFFFF", "#C8E8FF", "#FFF8E0"],
+        n1=16,
+        n2=2,
+        n3=12,
+        n6=1,
+        delay=55,
+    )
+    presets[PRESET_SPARKLE] = preset_skeleton(
+        "winter ice sparkle",
+        "sparkle",
+        ["#E8F4FF", "#B0DCFF", "#FFFFFF"],
+        n1=70,
+        n2=165,
+        n3=1,
+        n6=1,
+        delay=50,
+    )
+    presets[PRESET_COOL_WHITE] = preset_skeleton(
+        "winter cool white",
+        "on",
+        ["#E6F2FF"],
+        brightness=200,
+        delay=100,
+    )
+    presets[PRESET_CHASE_ICE] = preset_skeleton(
+        "winter ice chase",
+        "chase",
+        ["#E8F4FF", "#5080C8"],
+        auto=False,
+        n1=20,
+        n2=20,
+        n3=15,
+        n4=15,
+        delay=120,
+        background="#071018",
+    )
+
+    grid_presets = [
+        [PRESET_ICICLES, PRESET_TWINKLE, PRESET_BLIZZARD],
+        [PRESET_RIME, PRESET_AURORA, PRESET_STARFALL],
+    ]
+    flat = [p for row in grid_presets for p in row]
+
+    zones[ZONE_PRESETS_ID] = {
+        "name": "Winter grid",
+        "names": [],
+        "group_ids": [GROUP_ALL],
+        "preset_group_ids": {},
+        "presets": grid_presets,
+        "presets_flat": flat,
+        "default_preset": PRESET_TWINKLE,
+        "brightness": 200,
+        "sequence_ids": [],
+        "content_kind": "presets",
+    }
+
+    sequences[SEQ_CASCADE] = seq_doc(
+        "Winter cell cascade",
+        [
+            [{"preset_id": PRESET_ICICLES, "beats": 6}],
+            [{"preset_id": PRESET_SPARKLE, "beats": 6}],
+            [{"preset_id": PRESET_BLIZZARD, "beats": 6}],
+            [{"preset_id": PRESET_RIME, "beats": 6}],
+            [{"preset_id": PRESET_AURORA, "beats": 6}],
+            [{"preset_id": PRESET_STARFALL, "beats": 6}],
+        ],
+        [
+            [GROUP_CELL[DEVICE_MACS[0]]],
+            [GROUP_CELL[DEVICE_MACS[1]]],
+            [GROUP_CELL[DEVICE_MACS[2]]],
+            [GROUP_CELL[DEVICE_MACS[3]]],
+            [GROUP_CELL[DEVICE_MACS[4]]],
+            [GROUP_CELL[DEVICE_MACS[5]]],
+        ],
+        simulated_bpm=85,
+    )
+
+    sequences[SEQ_ROWS] = seq_doc(
+        "Winter row waves",
+        [
+            [
+                {"preset_id": PRESET_BLIZZARD, "beats": 8},
+                {"preset_id": PRESET_ICICLES, "beats": 8},
+            ],
+            [
+                {"preset_id": PRESET_AURORA, "beats": 8},
+                {"preset_id": PRESET_RIME, "beats": 8},
+            ],
+        ],
+        [[GROUP_TOP_ROW], [GROUP_BOTTOM_ROW]],
+        simulated_bpm=80,
+    )
+
+    sequences[SEQ_COLUMNS] = seq_doc(
+        "Winter column chase",
+        [
+            [{"preset_id": PRESET_CHASE_ICE, "beats": 12}],
+            [{"preset_id": PRESET_TWINKLE, "beats": 12}],
+            [{"preset_id": PRESET_STARFALL, "beats": 12}],
+        ],
+        [[GROUP_COL_LEFT], [GROUP_COL_MID], [GROUP_COL_RIGHT]],
+        simulated_bpm=95,
+    )
+
+    sequences[SEQ_BLIZZARD_ALL] = seq_doc(
+        "Winter full blizzard",
+        [[{"preset_id": PRESET_BLIZZARD, "beats": 16}]],
+        [[GROUP_ALL]],
+        simulated_bpm=75,
+    )
+
+    sequences[SEQ_ROTATION] = seq_doc(
+        "Winter showcase",
+        [
+            [
+                {"preset_id": PRESET_ICICLES, "beats": 8},
+                {"preset_id": PRESET_BLIZZARD, "beats": 8},
+                {"preset_id": PRESET_RIME, "beats": 8},
+                {"preset_id": PRESET_AURORA, "beats": 8},
+                {"preset_id": PRESET_STARFALL, "beats": 8},
+                {"preset_id": PRESET_TWINKLE, "beats": 8},
+            ]
+        ],
+        [[GROUP_ALL]],
+        simulated_bpm=72,
+    )
+
+    zones[ZONE_SEQUENCES_ID] = {
+        "name": "Winter sequences",
+        "names": [],
+        "group_ids": [GROUP_ALL],
+        "preset_group_ids": {},
+        "presets": [],
+        "presets_flat": [],
+        "default_preset": None,
+        "brightness": 200,
+        "sequence_ids": [
+            SEQ_CASCADE,
+            SEQ_ROWS,
+            SEQ_COLUMNS,
+            SEQ_BLIZZARD_ALL,
+            SEQ_ROTATION,
+        ],
+        "content_kind": "sequences",
+    }
+
+    save_json("profile", profiles)
+    save_json("palette", palettes)
+    save_json("group", groups)
+    save_json("device", devices)
+    save_json("zone", zones)
+    save_json("sequence", sequences)
+    save_json("preset", presets)
+
+    print("Winter profile created:")
+    print(f"  profile {PROFILE_ID}, palette {PALETTE_ID}")
+    print(f"  zones {ZONE_PRESETS_ID} (presets 2x3), {ZONE_SEQUENCES_ID} (sequences)")
+    print(f"  devices {', '.join(DEVICE_MACS)}")
+    print(f"  groups {GROUP_CELL} + rows/cols/all")
+    print(f"  presets {PRESET_OFF}-{PRESET_CHASE_ICE}")
+    print(f"  sequences {SEQ_CASCADE}-{SEQ_ROTATION}")
+
+
+if __name__ == "__main__":
+    main()

src/controllers/device.py

@@ -8,7 +8,7 @@ from models.device import (
 )
 from models.group import Group
 from models.transport import get_current_sender
-from settings import Settings
+from settings import get_settings
 from util.brightness_combine import effective_brightness_for_mac
 from models.wifi_ws_clients import (
     normalize_tcp_peer_ip,
@@ -77,7 +77,7 @@ def _brightness_save_message_json(b_val: int) -> str:
 controller = Microdot()
 devices = Device()
 _group_registry = Group()
-_pi_settings = Settings()
+_pi_settings = get_settings()
 
 
 def _device_live_connected(dev_dict):

src/controllers/group.py

@@ -5,14 +5,14 @@ from models.group import Group
 from models.device import Device
 from models.transport import get_current_sender
 from models.wifi_ws_clients import normalize_tcp_peer_ip, send_json_line_to_ip
-from settings import Settings
+from settings import get_settings
 from util.brightness_combine import effective_brightness_for_mac
 import json
 
 controller = Microdot()
 groups = Group()
 devices = Device()
-_pi_settings = Settings()
+_pi_settings = get_settings()
 
 
 def _group_doc_visible_for_profile(doc, profile_id):

src/controllers/led_tool.py

@@ -3,20 +3,40 @@ import os
 import subprocess
 import sys
 
-from microdot import Microdot
+from microdot import Microdot, send_file
 from serial.tools import list_ports
 
 controller = Microdot()
 
+_STATIC_ALLOWED = frozenset(
+    {"settings_editor.html", "settings_editor.js", "web_serial.js"}
+)
+
 
 def _repo_root() -> str:
     return os.path.abspath(os.path.join(os.path.dirname(__file__), "..", ".."))
 
 
+def _led_tool_static_dir() -> str:
+    return os.path.join(_repo_root(), "led-tool", "static")
+
+
 def _led_cli_path() -> str:
     return os.path.join(_repo_root(), "led-tool", "cli.py")
 
 
+def _filter_host_serial_ports(ports: list) -> list:
+    mod_path = os.path.join(_repo_root(), "led-tool", "host_ports.py")
+    if not os.path.isfile(mod_path):
+        return ports
+    import importlib.util
+
+    spec = importlib.util.spec_from_file_location("led_tool_host_ports", mod_path)
+    mod = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(mod)
+    return mod.filter_port_dicts(ports)
+
+
 def _build_led_cli_command(port: str, payload: dict):
     cmd = [sys.executable, _led_cli_path(), "--port", port]
 
@@ -92,16 +112,40 @@ def _extract_settings_from_stdout(stdout: str):
         return None
 
 
+@controller.get("/editor")
+async def settings_editor_page(request):
+    """led-tool settings UI (Web Serial + host serial via led-cli)."""
+    path = os.path.join(_led_tool_static_dir(), "settings_editor.html")
+    if not os.path.isfile(path):
+        return (
+            json.dumps({"error": "led-tool/static/settings_editor.html not found"}),
+            404,
+            {"Content-Type": "application/json"},
+        )
+    return send_file(path)
+
+
+@controller.get("/static/<path:filename>")
+async def led_tool_static(request, filename):
+    if filename not in _STATIC_ALLOWED:
+        return "Not found", 404
+    path = os.path.join(_led_tool_static_dir(), filename)
+    if not os.path.isfile(path):
+        return "Not found", 404
+    return send_file(path)
+
+
 @controller.get("/ports")
 async def list_serial_ports(request):
-    ports = []
+    ports = _filter_host_serial_ports(
-    for info in list_ports.comports():
+        [
-        ports.append(
             {
                 "device": info.device,
                 "description": info.description,
                 "hwid": info.hwid,
             }
+            for info in list_ports.comports()
+        ]
     )
     return (
         json.dumps(

src/controllers/preset.py

@@ -7,6 +7,7 @@ from models.device import Device, normalize_mac
 from models.transport import get_current_sender
 from util.driver_delivery import deliver_json_messages, deliver_preset_broadcast_then_per_device
 from util.espnow_message import build_message, build_preset_dict
+from util.profile_bundle import export_preset_bundle, import_preset_bundle
 import json
 
 controller = Microdot()
@@ -50,6 +51,41 @@ async def list_presets(request, session):
     }
     return json.dumps(scoped), 200, {'Content-Type': 'application/json'}
 
+@controller.get('/<preset_id>/export')
+@with_session
+async def export_preset(request, session, preset_id):
+    """Export one preset as a JSON bundle."""
+    current_profile_id = get_current_profile_id(session)
+    preset = presets.read(preset_id)
+    if not preset or str(preset.get("profile_id")) != str(current_profile_id):
+        return json.dumps({"error": "Preset not found"}), 404, {'Content-Type': 'application/json'}
+    try:
+        bundle = export_preset_bundle(preset_id, presets)
+        return json.dumps(bundle), 200, {'Content-Type': 'application/json'}
+    except ValueError as e:
+        return json.dumps({"error": str(e)}), 404, {'Content-Type': 'application/json'}
+
+
+@controller.post('/import')
+@with_session
+async def import_preset(request, session):
+    """Import a preset bundle into the current profile."""
+    try:
+        current_profile_id = get_current_profile_id(session)
+        if not current_profile_id:
+            return json.dumps({"error": "No profile available"}), 404, {'Content-Type': 'application/json'}
+        body = request.json or {}
+        bundle = body.get("bundle") if isinstance(body, dict) else body
+        if not isinstance(bundle, dict):
+            return json.dumps({"error": "Expected JSON bundle"}), 400, {'Content-Type': 'application/json'}
+        new_id, preset_data = import_preset_bundle(bundle, presets, current_profile_id)
+        return json.dumps({new_id: preset_data}), 201, {'Content-Type': 'application/json'}
+    except ValueError as e:
+        return json.dumps({"error": str(e)}), 400, {'Content-Type': 'application/json'}
+    except Exception as e:
+        return json.dumps({"error": str(e)}), 400, {'Content-Type': 'application/json'}
+
+
 @controller.get('/<preset_id>')
 @with_session
 async def get_preset(request, session, preset_id):

src/controllers/profile.py

@@ -3,12 +3,15 @@ from microdot.session import with_session
 from models.profile import Profile
 from models.zone import Zone
 from models.preset import Preset
+from models.sequence import Sequence
+from util.profile_bundle import export_profile_bundle, import_profile_bundle
 import json
 
 controller = Microdot()
 profiles = Profile()
 zones = Zone()
 presets = Preset()
+sequences = Sequence()
 
 @controller.get('')
 @with_session
@@ -54,18 +57,64 @@ async def get_current_profile(request, session):
         return json.dumps({"id": current_id, "profile": profile}), 200, {'Content-Type': 'application/json'}
     return json.dumps({"error": "No profile available"}), 404
 
-@controller.get('/<id>')
-@with_session
-async def get_profile(request, id, session):
-    """Get a specific profile by ID."""
-    # Handle 'current' as a special case
-    if id == 'current':
-        return await get_current_profile(request, session)
 
-    profile = profiles.read(id)
+@controller.post('/import')
-    if profile:
+@with_session
-        return json.dumps(profile), 200, {'Content-Type': 'application/json'}
+async def import_profile(request, session):
-    return json.dumps({"error": "Profile not found"}), 404
+    """Import a profile bundle (optionally apply as current profile)."""
+    try:
+        body = request.json or {}
+        bundle = body.get("bundle") if isinstance(body, dict) else body
+        if not isinstance(bundle, dict):
+            return json.dumps({"error": "Expected JSON bundle"}), 400, {'Content-Type': 'application/json'}
+        name = body.get("name") if isinstance(body, dict) else None
+        apply_raw = body.get("apply", True) if isinstance(body, dict) else True
+        if isinstance(apply_raw, str):
+            apply = apply_raw.strip().lower() in ("1", "true", "yes", "on")
+        else:
+            apply = bool(apply_raw)
+
+        new_profile_id, profile_data = import_profile_bundle(
+            bundle,
+            profiles,
+            zones,
+            presets,
+            sequences,
+            profiles._palette_model,
+            name=str(name).strip() if name else None,
+        )
+        if apply:
+            session['current_profile'] = str(new_profile_id)
+            session.save()
+        return (
+            json.dumps({new_profile_id: profile_data, "id": new_profile_id}),
+            201,
+            {'Content-Type': 'application/json'},
+        )
+    except ValueError as e:
+        return json.dumps({"error": str(e)}), 400, {'Content-Type': 'application/json'}
+    except Exception as e:
+        return json.dumps({"error": str(e)}), 400, {'Content-Type': 'application/json'}
+
+
+@controller.get('/<id>/export')
+async def export_profile(request, id):
+    """Export profile, zones, presets, sequences, and palette as a JSON bundle."""
+    try:
+        bundle = export_profile_bundle(
+            str(id),
+            profiles,
+            zones,
+            presets,
+            sequences,
+            profiles._palette_model,
+        )
+        return json.dumps(bundle), 200, {'Content-Type': 'application/json'}
+    except ValueError as e:
+        return json.dumps({"error": str(e)}), 404, {'Content-Type': 'application/json'}
+    except Exception as e:
+        return json.dumps({"error": str(e)}), 400, {'Content-Type': 'application/json'}
+
 
 @controller.post('/<id>/apply')
 @with_session
@@ -77,167 +126,6 @@ async def apply_profile(request, session, id):
     session.save()
     return json.dumps({"message": "Profile applied", "id": str(id)}), 200, {'Content-Type': 'application/json'}
 
-@controller.post('')
-async def create_profile(request):
-    """Create a new profile."""
-    try:
-        data = dict(request.json or {})
-        name = data.get("name", "")
-        seed_raw = data.get("seed_dj_zone", False)
-        if isinstance(seed_raw, str):
-            seed_dj_zone = seed_raw.strip().lower() in ("1", "true", "yes", "on")
-        else:
-            seed_dj_zone = bool(seed_raw)
-        # Request-only flag: do not persist on profile records.
-        data.pop("seed_dj_zone", None)
-        profile_id = profiles.create(name)
-        # Avoid persisting request-only fields.
-        data.pop("name", None)
-        if data:
-            profiles.update(profile_id, data)
-
-        # New profiles always start with a default zone pre-populated with starter presets.
-        default_preset_ids = []
-        default_preset_defs = [
-            {
-                "name": "on",
-                "pattern": "on",
-                "colors": ["#FFFFFF"],
-                "brightness": 255,
-                "delay": 100,
-                "auto": True,
-            },
-            {
-                "name": "off",
-                "pattern": "off",
-                "colors": [],
-                "brightness": 0,
-                "delay": 100,
-                "auto": True,
-            },
-            {
-                "name": "rainbow",
-                "pattern": "rainbow",
-                "colors": [],
-                "brightness": 255,
-                "delay": 100,
-                "auto": True,
-                "n1": 2,
-            },
-            {
-                "name": "Colour Cycle",
-                "pattern": "colour_cycle",
-                "colors": ["#FF0000", "#00FF00", "#0000FF"],
-                "brightness": 255,
-                "delay": 100,
-                "auto": True,
-                "n1": 1,
-            },
-            {
-                "name": "transition",
-                "pattern": "transition",
-                "colors": ["#FF0000", "#00FF00", "#0000FF"],
-                "brightness": 255,
-                "delay": 500,
-                "auto": True,
-            },
-            {
-                "name": "flicker",
-                "pattern": "flicker",
-                "colors": ["#FFB84D"],
-                "brightness": 255,
-                "delay": 80,
-                "auto": True,
-                "n1": 30,
-            },
-            {
-                "name": "flame",
-                "pattern": "flame",
-                "colors": [],
-                "brightness": 255,
-                "delay": 50,
-                "auto": True,
-                "n1": 35,
-                "n2": 2600,
-                "n3": 0,
-                "n4": 0,
-            },
-            {
-                "name": "twinkle",
-                "pattern": "twinkle",
-                "colors": ["#78C8FF", "#508CFF", "#B478FF", "#64DCE8", "#A0C8FF"],
-                "brightness": 255,
-                "delay": 55,
-                "auto": True,
-                "n1": 72,
-                "n2": 140,
-                "n3": 2,
-                "n4": 6,
-            },
-        ]
-
-        for preset_data in default_preset_defs:
-            pid = presets.create(profile_id)
-            presets.update(pid, preset_data)
-            default_preset_ids.append(str(pid))
-
-        default_tab_id = zones.create(name="default", names=["1"], presets=[default_preset_ids])
-        zones.update(default_tab_id, {
-            "presets_flat": default_preset_ids,
-            "default_preset": default_preset_ids[0] if default_preset_ids else None,
-        })
-
-        profile = profiles.read(profile_id) or {}
-        profile_tabs = profile.get("zones", []) if isinstance(profile.get("zones", []), list) else []
-        profile_tabs.append(str(default_tab_id))
-
-        if seed_dj_zone:
-            # Seed a DJ-focused zone with three starter presets.
-            seeded_preset_ids = []
-            preset_defs = [
-                {
-                    "name": "DJ Rainbow",
-                    "pattern": "rainbow",
-                    "colors": [],
-                    "brightness": 220,
-                    "delay": 60,
-                    "n1": 12,
-                },
-                {
-                    "name": "DJ Single Color",
-                    "pattern": "on",
-                    "colors": ["#ff00ff"],
-                    "brightness": 220,
-                    "delay": 100,
-                },
-                {
-                    "name": "DJ Transition",
-                    "pattern": "transition",
-                    "colors": ["#ff0000", "#00ff00", "#0000ff"],
-                    "brightness": 220,
-                    "delay": 250,
-                },
-            ]
-
-            for preset_data in preset_defs:
-                pid = presets.create(profile_id)
-                presets.update(pid, preset_data)
-                seeded_preset_ids.append(str(pid))
-
-            dj_tab_id = zones.create(name="dj", names=["dj"], presets=[seeded_preset_ids])
-            zones.update(dj_tab_id, {
-                "presets_flat": seeded_preset_ids,
-                "default_preset": seeded_preset_ids[0] if seeded_preset_ids else None,
-            })
-
-            profile_tabs.append(str(dj_tab_id))
-
-        profiles.update(profile_id, {"zones": profile_tabs})
-
-        profile_data = profiles.read(profile_id)
-        return json.dumps({profile_id: profile_data}), 201, {'Content-Type': 'application/json'}
-    except Exception as e:
-        return json.dumps({"error": str(e)}), 400
 
 @controller.post('/<id>/clone')
 async def clone_profile(request, id):
@@ -351,6 +239,184 @@ async def clone_profile(request, id):
     except Exception as e:
         return json.dumps({"error": str(e)}), 400
 
+
+@controller.get('/<id>')
+@with_session
+async def get_profile(request, id, session):
+    """Get a specific profile by ID."""
+    # Handle 'current' as a special case
+    if id == 'current':
+        return await get_current_profile(request, session)
+    
+    profile = profiles.read(id)
+    if profile:
+        return json.dumps(profile), 200, {'Content-Type': 'application/json'}
+    return json.dumps({"error": "Profile not found"}), 404
+
+@controller.post('')
+async def create_profile(request):
+    """Create a new profile."""
+    try:
+        data = dict(request.json or {})
+        name = data.get("name", "")
+        seed_raw = data.get("seed_dj_zone", False)
+        if isinstance(seed_raw, str):
+            seed_dj_zone = seed_raw.strip().lower() in ("1", "true", "yes", "on")
+        else:
+            seed_dj_zone = bool(seed_raw)
+        # Request-only flag: do not persist on profile records.
+        data.pop("seed_dj_zone", None)
+        profile_id = profiles.create(name)
+        # Avoid persisting request-only fields.
+        data.pop("name", None)
+        if data:
+            profiles.update(profile_id, data)
+
+        # New profiles always start with a default zone pre-populated with starter presets.
+        default_preset_ids = []
+        default_preset_defs = [
+            {
+                "name": "on",
+                "pattern": "on",
+                "colors": ["#FFFFFF"],
+                "brightness": 255,
+                "delay": 100,
+                "auto": True,
+            },
+            {
+                "name": "off",
+                "pattern": "off",
+                "colors": [],
+                "brightness": 0,
+                "delay": 100,
+                "auto": True,
+            },
+            {
+                "name": "rainbow",
+                "pattern": "colour_cycle",
+                "colors": [],
+                "brightness": 255,
+                "delay": 100,
+                "auto": True,
+                "n1": 2,
+                "mode": 1,
+            },
+            {
+                "name": "Colour Cycle",
+                "pattern": "colour_cycle",
+                "colors": ["#FF0000", "#00FF00", "#0000FF"],
+                "brightness": 255,
+                "delay": 100,
+                "auto": True,
+                "n1": 1,
+            },
+            {
+                "name": "transition",
+                "pattern": "transition",
+                "colors": ["#FF0000", "#00FF00", "#0000FF"],
+                "brightness": 255,
+                "delay": 500,
+                "auto": True,
+            },
+            {
+                "name": "flicker",
+                "pattern": "flicker",
+                "colors": ["#FFB84D"],
+                "brightness": 255,
+                "delay": 80,
+                "auto": True,
+                "n1": 30,
+            },
+            {
+                "name": "flame",
+                "pattern": "flame",
+                "colors": [],
+                "brightness": 255,
+                "delay": 50,
+                "auto": True,
+                "n1": 35,
+                "n2": 2600,
+                "n3": 0,
+                "n4": 0,
+            },
+            {
+                "name": "twinkle",
+                "pattern": "twinkle",
+                "colors": ["#78C8FF", "#508CFF", "#B478FF", "#64DCE8", "#A0C8FF"],
+                "brightness": 255,
+                "delay": 55,
+                "auto": True,
+                "n1": 72,
+                "n2": 140,
+                "n3": 2,
+                "n4": 6,
+            },
+        ]
+
+        for preset_data in default_preset_defs:
+            pid = presets.create(profile_id)
+            presets.update(pid, preset_data)
+            default_preset_ids.append(str(pid))
+
+        default_tab_id = zones.create(name="default", names=["1"], presets=[default_preset_ids])
+        zones.update(default_tab_id, {
+            "presets_flat": default_preset_ids,
+            "default_preset": default_preset_ids[0] if default_preset_ids else None,
+        })
+
+        profile = profiles.read(profile_id) or {}
+        profile_tabs = profile.get("zones", []) if isinstance(profile.get("zones", []), list) else []
+        profile_tabs.append(str(default_tab_id))
+
+        if seed_dj_zone:
+            # Seed a DJ-focused zone with three starter presets.
+            seeded_preset_ids = []
+            preset_defs = [
+                {
+                    "name": "DJ Rainbow",
+                    "pattern": "colour_cycle",
+                    "colors": [],
+                    "brightness": 220,
+                    "delay": 60,
+                    "n1": 12,
+                    "mode": 1,
+                },
+                {
+                    "name": "DJ Single Color",
+                    "pattern": "on",
+                    "colors": ["#ff00ff"],
+                    "brightness": 220,
+                    "delay": 100,
+                },
+                {
+                    "name": "DJ Transition",
+                    "pattern": "transition",
+                    "colors": ["#ff0000", "#00ff00", "#0000ff"],
+                    "brightness": 220,
+                    "delay": 250,
+                },
+            ]
+
+            for preset_data in preset_defs:
+                pid = presets.create(profile_id)
+                presets.update(pid, preset_data)
+                seeded_preset_ids.append(str(pid))
+
+            dj_tab_id = zones.create(name="dj", names=["dj"], presets=[seeded_preset_ids])
+            zones.update(dj_tab_id, {
+                "presets_flat": seeded_preset_ids,
+                "default_preset": seeded_preset_ids[0] if seeded_preset_ids else None,
+            })
+
+            profile_tabs.append(str(dj_tab_id))
+
+        profiles.update(profile_id, {"zones": profile_tabs})
+
+        profile_data = profiles.read(profile_id)
+        return json.dumps({profile_id: profile_data}), 201, {'Content-Type': 'application/json'}
+    except Exception as e:
+        return json.dumps({"error": str(e)}), 400
+
 @controller.put('/current')
 @with_session
 async def update_current_profile(request, session):

src/controllers/sequence.py

@@ -3,11 +3,14 @@ from microdot.session import with_session
 from models.sequence import Sequence
 from models.profile import Profile
 from models.transport import get_current_sender
+from models.preset import Preset
+from util.profile_bundle import export_sequence_bundle, import_sequence_bundle
 import json
 
 controller = Microdot()
 sequences = Sequence()
 profiles = Profile()
+presets = Preset()
 
 
 def get_current_profile_id(session=None):
@@ -27,6 +30,7 @@ def get_current_profile_id(session=None):
 @with_session
 async def list_sequences(request, session):
     """List sequences for the current profile."""
+    sequences.load()
     current_profile_id = get_current_profile_id(session)
     if not current_profile_id:
         return json.dumps({}), 200, {"Content-Type": "application/json"}
@@ -39,10 +43,62 @@ async def list_sequences(request, session):
     return json.dumps(scoped), 200, {"Content-Type": "application/json"}
 
 
+@controller.get("/<id>/export")
+@with_session
+async def export_sequence(request, session, id):
+    """Export a sequence and referenced presets as a JSON bundle."""
+    current_profile_id = get_current_profile_id(session)
+    if not current_profile_id:
+        return json.dumps({"error": "No profile available"}), 404, {"Content-Type": "application/json"}
+    try:
+        bundle = export_sequence_bundle(
+            id,
+            sequences,
+            presets,
+            profile_id=current_profile_id,
+        )
+        return json.dumps(bundle), 200, {"Content-Type": "application/json"}
+    except ValueError as e:
+        return json.dumps({"error": str(e)}), 404, {"Content-Type": "application/json"}
+
+
+@controller.post("/import")
+@with_session
+async def import_sequence(request, session):
+    """Import a sequence bundle into the current profile."""
+    try:
+        current_profile_id = get_current_profile_id(session)
+        if not current_profile_id:
+            return (
+                json.dumps({"error": "No profile available"}),
+                404,
+                {"Content-Type": "application/json"},
+            )
+        body = request.json or {}
+        bundle = body.get("bundle") if isinstance(body, dict) else body
+        if not isinstance(bundle, dict):
+            return (
+                json.dumps({"error": "Expected JSON bundle"}),
+                400,
+                {"Content-Type": "application/json"},
+            )
+        new_id, seq_data = import_sequence_bundle(bundle, sequences, presets, current_profile_id)
+        return (
+            json.dumps({new_id: seq_data}),
+            201,
+            {"Content-Type": "application/json"},
+        )
+    except ValueError as e:
+        return json.dumps({"error": str(e)}), 400, {"Content-Type": "application/json"}
+    except Exception as e:
+        return json.dumps({"error": str(e)}), 400, {"Content-Type": "application/json"}
+
+
 @controller.get("/<id>")
 @with_session
 async def get_sequence(request, session, id):
     """Get a specific sequence by ID (current profile only)."""
+    sequences.load()
     current_profile_id = get_current_profile_id(session)
     seq = sequences.read(id)
     if (
@@ -149,15 +205,46 @@ async def delete_sequence(request, session, id):
     return json.dumps({"error": "Sequence not found"}), 404
 
 
+@controller.post("/sync-phase")
+@with_session
+async def sync_sequence_beat_phase(request, session):
+    """Align beat counters while a sequence is playing (body: {\"mode\": \"step\"|\"pass\"})."""
+    _ = session
+    try:
+        data = request.json or {}
+    except Exception:
+        data = {}
+    if not isinstance(data, dict):
+        data = {}
+    mode = data.get("mode") or data.get("align") or "step"
+    try:
+        from util.sequence_playback import sync_beat_phase
+
+        if not await sync_beat_phase(str(mode)):
+            return (
+                json.dumps({"error": "No sequence is playing"}),
+                409,
+                {"Content-Type": "application/json"},
+            )
+        from util.audio_detector import anchor_shared_bar_phase
+
+        anchor_shared_bar_phase()
+        return json.dumps({"ok": True, "mode": str(mode).strip().lower()}), 200, {
+            "Content-Type": "application/json"
+        }
+    except Exception as e:
+        return json.dumps({"error": str(e)}), 500, {"Content-Type": "application/json"}
+
+
 @controller.post("/stop")
 @with_session
 async def stop_sequence_playback(request, session):
     """Stop server-driven zone sequence playback."""
     _ = request
     try:
-        from util.sequence_playback import stop
+        from util.sequence_playback import stop_playback
 
-        stop()
+        await stop_playback(clear_devices=True)
         return json.dumps({"ok": True}), 200, {"Content-Type": "application/json"}
     except Exception as e:
         return json.dumps({"error": str(e)}), 500, {"Content-Type": "application/json"}
@@ -197,8 +284,12 @@ async def play_sequence(request, session, id):
     try:
         from util.sequence_playback import start
 
-        await start(zone_id, str(id), str(current_profile_id), data if isinstance(data, dict) else None)
+        play_opts = data if isinstance(data, dict) else None
-        return json.dumps({"ok": True}), 200, {"Content-Type": "application/json"}
+        await start(zone_id, str(id), str(current_profile_id), play_opts)
+        from util.sequence_playback import pending_play_status
+
+        body = {"ok": True, **pending_play_status()}
+        return json.dumps(body), 200, {"Content-Type": "application/json"}
     except ValueError as e:
         return json.dumps({"error": str(e)}), 400, {"Content-Type": "application/json"}
     except RuntimeError as e:

src/controllers/settings.py

@@ -4,10 +4,10 @@ import json
 from microdot import Microdot, send_file
 
 from models import wifi_ws_clients
-from settings import Settings
+from settings import get_settings
 
 controller = Microdot()
-settings = Settings()
+settings = get_settings()
 
 @controller.get('')
 async def get_settings(request):
@@ -75,7 +75,21 @@ def _validate_global_brightness(value):
     return v
 
 
-@controller.put('/settings')
+def _validate_sequence_switch_wait(value):
+    s = str(value).strip().lower()
+    if s not in ("beat", "downbeat"):
+        raise ValueError("sequence_switch_wait must be beat or downbeat")
+    return s
+
+
+def _validate_audio_beat_phase_ms(value):
+    v = int(value)
+    if v < 0 or v > 500:
+        raise ValueError("audio_beat_phase_ms must be between 0 and 500")
+    return v
+
+
+@controller.put('')
 async def update_settings(request):
     """Update general settings."""
     try:
@@ -87,6 +101,10 @@ async def update_settings(request):
             elif key == 'global_brightness' and value is not None:
                 settings[key] = _validate_global_brightness(value)
                 global_brightness_changed = True
+            elif key == 'sequence_switch_wait' and value is not None:
+                settings[key] = _validate_sequence_switch_wait(value)
+            elif key == 'audio_beat_phase_ms' and value is not None:
+                settings[key] = _validate_audio_beat_phase_ms(value)
             else:
                 settings[key] = value
         settings.save()

src/controllers/zone.py

@@ -145,6 +145,7 @@ async def zone_content_fragment(request, session, id):
 @controller.get("")
 @with_session
 async def list_zones(request, session):
+    zones.load()
     profile_id = get_current_profile_id(session)
     current_zone_id = get_current_zone_id(request, session)
     zone_order = get_profile_zone_order(profile_id) if profile_id else []
@@ -213,6 +214,7 @@ async def set_current_zone(request, id):
 
 @controller.get("/<id>")
 async def get_zone(request, id):
+    zones.load()
     z = zones.read(id)
     if z:
         return json.dumps(z), 200, {"Content-Type": "application/json"}
@@ -349,6 +351,7 @@ async def clone_zone(request, session, id):
             source.get("names"),
             source.get("presets"),
             source.get("group_ids"),
+            source.get("content_kind"),
         )
         extra = {k: v for k, v in source.items() if k not in ("name", "names", "presets")}
         if extra:

src/main.py

@@ -10,7 +10,7 @@ import traceback
 from microdot import Microdot, send_file
 from microdot.websocket import with_websocket
 from microdot.session import Session
-from settings import Settings
+from settings import get_settings
 
 import controllers.preset as preset
 import controllers.profile as profile
@@ -100,11 +100,7 @@ async def _handle_udp_discovery(sock, udp_holder=None) -> None:
 
 
 def _prime_wifi_outbound_driver_connections() -> None:
-    """
+    """On boot, dial each registered Wi-Fi driver (same 4-attempt limit as UDP hello)."""
-    For each Wi‑Fi device in the registry with a usable IPv4, start (or keep) the
-    outbound WebSocket task. The client loop reconnects automatically if the link
-    drops. Presets are not pushed automatically; use Send Presets / profile apply.
-    """
     n = 0
     try:
         dev = Device()
@@ -143,65 +139,6 @@ def _ipv4_address(addr: str) -> str | None:
     return s
 
 
-async def _periodic_wifi_driver_hello_loop(settings, udp_holder) -> None:
-    """
-    While a registered Wi-Fi driver has no outbound WebSocket, send a short JSON hello on
-    UDP discovery port so the device can announce itself and we can reconnect.
-    """
-    try:
-        interval = float(settings.get("wifi_driver_hello_interval_s", 10.0))
-    except (TypeError, ValueError):
-        interval = 10.0
-    if interval <= 0:
-        return
-
-    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
-    sock.setblocking(False)
-    loop = asyncio.get_running_loop()
-    try:
-        while True:
-            await asyncio.sleep(interval)
-            if udp_holder.get("closing"):
-                break
-            try:
-                dev = Device()
-            except Exception as e:
-                print(f"[hello] device list failed: {e!r}")
-                continue
-            for _mac_key, doc in list(dev.items()):
-                if not isinstance(doc, dict):
-                    continue
-                if doc.get("transport") != "wifi":
-                    continue
-                ip = _ipv4_address(str(doc.get("address") or ""))
-                if not ip:
-                    continue
-                if tcp_client_registry.tcp_client_connected(ip):
-                    continue
-                name = (doc.get("name") or "").strip()
-                mac = normalize_mac(doc.get("id") or _mac_key)
-                if not name or not mac:
-                    continue
-                line = (
-                    json.dumps(
-                        {"m": "hello", "device_name": name, "mac": mac},
-                        separators=(",", ":"),
-                    )
-                    + "\n"
-                )
-                try:
-                    await loop.sock_sendto(
-                        sock, line.encode("utf-8"), (ip, DISCOVERY_UDP_PORT)
-                    )
-                except OSError as e:
-                    print(f"[hello] UDP to {ip!r} failed: {e!r}")
-    finally:
-        try:
-            sock.close()
-        except OSError:
-            pass
-
-
 async def _run_udp_discovery_server(udp_holder=None) -> None:
     sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
     sock.setblocking(False)
@@ -244,7 +181,7 @@ async def _send_bridge_wifi_channel(settings, sender):
 
 
 async def main(port=80):
-    settings = Settings()
+    settings = get_settings()
     print(settings)
     print("Starting")
 
@@ -377,7 +314,12 @@ async def main(port=80):
             audio_detector.start(device=device)
             from util.audio_run_persist import write_audio_run_state
 
-            write_audio_run_state(enabled=True, device=device)
+            write_audio_run_state(
+                enabled=True,
+                device=device,
+                device_override=str(payload.get("device_override") or ""),
+                device_select=str(payload.get("device_select") or ""),
+            )
             return {"ok": True, "status": audio_detector.status()}
         except Exception as e:
             return {"ok": False, "error": str(e)}, 500
@@ -391,6 +333,24 @@ async def main(port=80):
         write_audio_run_state(enabled=False)
         return {"ok": True, "status": audio_detector.status()}
 
+    @app.route('/api/audio/reset', methods=['POST'])
+    async def audio_reset(request):
+        """Clear beat/BPM tracking state without stopping the detector."""
+        _ = request
+        ok = audio_detector.reset_tracking()
+        if not ok:
+            return {"ok": False, "error": "Audio detector is not running"}, 409
+        return {"ok": True, "status": audio_detector.status()}
+
+    @app.route('/api/audio/anchor-bar', methods=['POST'])
+    async def audio_anchor_bar(request):
+        """Mark the current moment as bar beat 1 (downbeat)."""
+        _ = request
+        ok = audio_detector.anchor_bar_phase()
+        if not ok:
+            return {"ok": False, "error": "Audio detector is not running"}, 409
+        return {"ok": True, "status": audio_detector.status()}
+
     @app.route('/api/audio/status')
     async def audio_status(request):
         _ = request
@@ -426,6 +386,14 @@ async def main(port=80):
                 if bs > 0:
                     beat_readout = str(bs)
         st["beat_readout"] = beat_readout
+        from util.audio_run_persist import read_audio_run_state
+
+        st["beat_phase_ms"] = int(settings.get("audio_beat_phase_ms") or 0)
+        seq_wait = str(settings.get("sequence_switch_wait") or "beat").strip().lower()
+        if seq_wait not in ("beat", "downbeat"):
+            seq_wait = "beat"
+        st["sequence_switch_wait"] = seq_wait
+        st["audio_run"] = read_audio_run_state()
         return {"status": st}
 
     # Static file route
@@ -480,16 +448,30 @@ async def main(port=80):
     await _send_bridge_wifi_channel(settings, sender)
     _prime_wifi_outbound_driver_connections()
 
-    udp_holder = {"closing": False}
+    udp_holder = {"closing": False, "shutting_down": False}
     loop = asyncio.get_running_loop()
+    server_tasks: list[asyncio.Task] = []
 
     def _graceful_shutdown(*_args):
+        if udp_holder.get("shutting_down"):
+            raise SystemExit(0)
+        udp_holder["shutting_down"] = True
         print("[server] shutting down...")
         udp_holder["closing"] = True
         try:
             audio_detector.stop()
         except Exception:
             pass
+        try:
+            from util import sequence_playback as seq_pb
+
+            seq_pb.stop()
+            for attr in ("_pending_beat_task", "_sim_beat_task"):
+                t = getattr(seq_pb, attr, None)
+                if t is not None and not t.done():
+                    t.cancel()
+        except Exception:
+            pass
         u = udp_holder.get("sock")
         if u is not None:
             try:
@@ -498,7 +480,13 @@ async def main(port=80):
                 pass
         tcp_client_registry.cancel_all_driver_tasks()
         if getattr(app, "server", None) is not None:
+            try:
                 app.shutdown()
+            except Exception:
+                pass
+        for t in server_tasks:
+            if not t.done():
+                t.cancel()
 
     shutdown_handlers_registered = False
     try:
@@ -511,11 +499,17 @@ async def main(port=80):
 
         # Await HTTP + UDP discovery; bind failures (e.g. port 80 in use) surface here.
         try:
-            await asyncio.gather(
+            server_tasks[:] = [
-                app.start_server(host="0.0.0.0", port=port),
+                asyncio.create_task(
-                _run_udp_discovery_server(udp_holder),
+                    app.start_server(host="0.0.0.0", port=port), name="http"
-                _periodic_wifi_driver_hello_loop(settings, udp_holder),
+                ),
-            )
+                asyncio.create_task(
+                    _run_udp_discovery_server(udp_holder), name="udp"
+                ),
+            ]
+            await asyncio.gather(*server_tasks)
+        except asyncio.CancelledError:
+            pass
         except OSError as e:
             if e.errno == errno.EADDRINUSE:
                 print(
@@ -540,6 +534,21 @@ async def main(port=80):
                 app.server = None
             except Exception:
                 pass
+        udp_holder["closing"] = True
+        for t in list(server_tasks):
+            if not t.done():
+                t.cancel()
+        if server_tasks:
+            await asyncio.gather(*server_tasks, return_exceptions=True)
+        pending = [
+            t
+            for t in asyncio.all_tasks(loop)
+            if t is not asyncio.current_task() and not t.done()
+        ]
+        for t in pending:
+            t.cancel()
+        if pending:
+            await asyncio.gather(*pending, return_exceptions=True)
         if shutdown_handlers_registered:
             for sig in (signal.SIGINT, signal.SIGTERM):
                 try:
@@ -549,5 +558,9 @@ async def main(port=80):
 
 if __name__ == "__main__":
     import os
+
     port = int(os.environ.get("PORT", 80))
+    try:
         asyncio.run(main(port=port))
+    except KeyboardInterrupt:
+        print("[server] interrupted")

src/models/wifi_ws_clients.py

@@ -13,7 +13,6 @@ from websockets.exceptions import ConnectionClosed
 _connections: dict[str, object] = {}
 _send_locks: dict[str, asyncio.Lock] = {}
 _tasks: dict[str, asyncio.Task] = {}
-_unreachable_counts: dict[str, int] = {}
 _settings = None
 
 _tcp_status_broadcast = None
@@ -119,7 +118,6 @@ def _register_ws(ip: str, ws) -> None:
     if not key:
         return
     _connections[key] = ws
-    _unreachable_counts.pop(key, None)
     if key not in _send_locks:
         _send_locks[key] = asyncio.Lock()
     _schedule_status_broadcast(key, True)
@@ -275,52 +273,43 @@ async def _driver_connection_loop(ip: str) -> None:
     if stagger > 0:
         await asyncio.sleep(stagger)
 
-    # Only bound boot-time: after we have connected once, keep retrying (Wi-Fi drops, reboots).
-    connected_once = False
-    boot_attempts = 0
     try:
-        while True:
+        for attempt in range(1, max_boot_attempts + 1):
-            if not connected_once:
-                if boot_attempts >= max_boot_attempts:
-                    print(
-                        f"[WS] driver {ip} still unreachable after {max_boot_attempts} "
-                        f"initial dial attempt(s); stopping until next UDP hello / registry prime"
-                    )
-                    break
-                boot_attempts += 1
             try:
-                print(f"[WS] connecting to {uri!r}")
+                print(f"[WS] connecting to {uri!r} (attempt {attempt}/{max_boot_attempts})")
                 async with websockets.connect(
                     uri,
                     ping_interval=20,
                     ping_timeout=15,
                     open_timeout=open_timeout,
                 ) as ws:
-                    connected_once = True
                     _register_ws(ip, ws)
                     try:
                         await _recv_forward_loop(ip, ws)
                     finally:
                         unregister_tcp_writer(ip, ws)
+                    return
             except asyncio.CancelledError:
                 raise
             except ConnectionClosed as e:
                 print(f"[WS] driver {ip} closed: {e}")
                 unregister_tcp_writer(ip, None)
+                return
             except Exception as e:
                 if _benign_ws_connect_failure(e):
-                    n = _unreachable_counts.get(ip, 0) + 1
-                    _unreachable_counts[ip] = n
-                    if n == 1 or (n % 30) == 0:
                     print(
-                            f"[WS] driver {ip} unreachable, retry in {retry_interval_s}s: {e} (x{n})"
+                        f"[WS] driver {ip} unreachable (attempt {attempt}/{max_boot_attempts}): {e}"
                     )
                 else:
                     print(f"[WS] driver {ip} session error: {e!r}")
                     traceback.print_exception(type(e), e, e.__traceback__)
-                    _unreachable_counts.pop(ip, None)
                 unregister_tcp_writer(ip, None)
+            if attempt < max_boot_attempts:
                 await asyncio.sleep(retry_interval_s)
+        print(
+            f"[WS] driver {ip} still unreachable after {max_boot_attempts} attempt(s); "
+            "waiting for next UDP hello"
+        )
     except asyncio.CancelledError:
         unregister_tcp_writer(ip, None)
         raise
@@ -329,10 +318,12 @@ async def _driver_connection_loop(ip: str) -> None:
 
 
 def ensure_driver_connection(peer_ip: str) -> None:
-    """Start (or keep) a background task that maintains ``ws://<ip>:port/ws``."""
+    """Dial ``ws://<ip>:port/ws`` up to wifi_driver_initial_connect_attempts times (UDP hello only)."""
     key = normalize_tcp_peer_ip(peer_ip)
     if not key:
         return
+    if tcp_client_connected(key):
+        return
     t = _tasks.get(key)
     if t is not None and not t.done():
         return
@@ -353,4 +344,3 @@ def cancel_all_driver_tasks() -> None:
         _schedule_status_broadcast(ip, False)
     _connections.clear()
     _send_locks.clear()
-    _unreachable_counts.clear()

src/models/zone.py

@@ -22,7 +22,7 @@ class Zone(Model):
     """Preset layout row (stored in ``db/zone.json``); legacy storage was ``tab.json`` / Tab.
 
     Optional ``content_kind`` on a row: ``\"presets\"`` (preset tiles only) or ``\"sequences\"``
-    (sequence tiles only). Omitted or unknown => both (legacy behaviour).
+    (sequence tiles only). Legacy rows without ``content_kind`` are inferred on load.
     """
 
     def __init__(self):
@@ -43,9 +43,66 @@ class Zone(Model):
             if "preset_group_ids" not in doc or not isinstance(doc.get("preset_group_ids"), dict):
                 doc["preset_group_ids"] = {}
                 changed = True
+            if "sequence_ids" not in doc or not isinstance(doc.get("sequence_ids"), list):
+                doc["sequence_ids"] = []
+                changed = True
+            if not self._normalized_content_kind(doc):
+                doc["content_kind"] = self._infer_content_kind(doc)
+                changed = True
         if changed:
             self.save()
 
+    @staticmethod
+    def _normalized_content_kind(doc):
+        if not isinstance(doc, dict):
+            return None
+        kind = doc.get("content_kind")
+        return kind if kind in ("presets", "sequences") else None
+
+    @staticmethod
+    def _preset_ids_in_doc(doc):
+        if not isinstance(doc, dict):
+            return []
+        flat = doc.get("presets_flat")
+        if isinstance(flat, list):
+            return [str(x) for x in flat if x is not None and str(x).strip()]
+        presets = doc.get("presets")
+        if not isinstance(presets, list) or not presets:
+            return []
+        if isinstance(presets[0], str):
+            return [str(x) for x in presets if x is not None and str(x).strip()]
+        if isinstance(presets[0], list):
+            out = []
+            for row in presets:
+                if isinstance(row, list):
+                    out.extend(str(x) for x in row if x is not None and str(x).strip())
+            return out
+        return []
+
+    @classmethod
+    def _infer_content_kind(cls, doc):
+        kind = cls._normalized_content_kind(doc)
+        if kind:
+            return kind
+        seq_ids = [
+            str(x).strip()
+            for x in (doc.get("sequence_ids") or [])
+            if x is not None and str(x).strip()
+        ]
+        preset_ids = cls._preset_ids_in_doc(doc)
+        if seq_ids and not preset_ids:
+            return "sequences"
+        return "presets"
+
+    def _enforce_content_kind_invariants(self, doc):
+        """Presets-only zones hold no sequences; sequences-only hold no preset tiles."""
+        kind = self._normalized_content_kind(doc)
+        if kind == "presets":
+            doc["sequence_ids"] = []
+        elif kind == "sequences":
+            doc["presets"] = []
+            doc["presets_flat"] = []
+
     def create(self, name="", names=None, presets=None, group_ids=None, content_kind=None):
         next_id = self.get_next_id()
         gid_list = []
@@ -62,6 +119,9 @@ class Zone(Model):
         }
         if content_kind in ("presets", "sequences"):
             doc["content_kind"] = content_kind
+        if "sequence_ids" not in doc:
+            doc["sequence_ids"] = []
+        self._enforce_content_kind_invariants(doc)
         self[next_id] = doc
         self.save()
         return next_id
@@ -74,7 +134,14 @@ class Zone(Model):
         id_str = str(id)
         if id_str not in self:
             return False
-        self[id_str].update(data)
+        patch = dict(data) if isinstance(data, dict) else {}
+        doc = self[id_str]
+        locked_kind = self._normalized_content_kind(doc) or self._infer_content_kind(doc)
+        if "content_kind" in patch:
+            patch["content_kind"] = locked_kind
+        self[id_str].update(patch)
+        if "content_kind" in patch:
+            self._enforce_content_kind_invariants(self[id_str])
         self.save()
         return True
 

src/settings.py

@@ -12,11 +12,15 @@ def _settings_path():
         return "settings.json"
 
 
+_settings_singleton: "Settings | None" = None
+
+
 class Settings(dict):
     SETTINGS_FILE = None  # Set in __init__ from _settings_path()
 
-    def __init__(self):
+    def __init__(self, *, quiet: bool = False):
         super().__init__()
+        self._quiet = quiet
         if Settings.SETTINGS_FILE is None:
             Settings.SETTINGS_FILE = _settings_path()
         self.load()  # Load settings from file during initialization
@@ -53,12 +57,9 @@ class Settings(dict):
             self['wifi_driver_ws_port'] = 80
         if 'wifi_driver_ws_path' not in self:
             self['wifi_driver_ws_path'] = '/ws'
-        # Seconds between UDP discovery nudges when a Wi-Fi driver WebSocket is
+        # Legacy (unused): periodic UDP nudges removed; connect only on driver hello.
-        # down (0 disables). Helps drivers that reconnect after seeing traffic on 8766.
         if 'wifi_driver_hello_interval_s' not in self:
-            self['wifi_driver_hello_interval_s'] = 10.0
+            self['wifi_driver_hello_interval_s'] = 0
-        # Legacy key (no longer read): initial outbound dial limit uses
-        # wifi_driver_initial_connect_attempts instead.
         if 'wifi_driver_connect_retry_window_s' not in self:
             self['wifi_driver_connect_retry_window_s'] = 120.0
         # Spread outbound dials 0..N s by device IP so six+ drivers do not all hit the AP at once.
@@ -70,7 +71,7 @@ class Settings(dict):
         # Pause between outbound WebSocket dial attempts (seconds).
         if 'wifi_driver_connect_retry_interval_s' not in self:
             self['wifi_driver_connect_retry_interval_s'] = 2.0
-        # Outbound dial attempts to the saved driver IP before first success; then wait for UDP discovery.
+        # Outbound WebSocket dial attempts per driver UDP hello (then wait for next hello).
         if 'wifi_driver_initial_connect_attempts' not in self:
             self['wifi_driver_initial_connect_attempts'] = 4
         # UART to ESP32 ESP-NOW bridge; default off (Wi-Fi drivers need no serial).
@@ -79,12 +80,21 @@ class Settings(dict):
         # Zone UI global brightness (0–255); shared across browsers/devices.
         if 'global_brightness' not in self:
             self['global_brightness'] = 255
+        # Sequence tile start: wait for beat or downbeat (server-owned).
+        if 'sequence_switch_wait' not in self:
+            self['sequence_switch_wait'] = 'beat'
+        elif str(self.get('sequence_switch_wait', '')).strip().lower() == 'phrase':
+            self['sequence_switch_wait'] = 'beat'
+        # Beat flash alignment delay (ms); applied by all UI clients polling audio status.
+        if 'audio_beat_phase_ms' not in self:
+            self['audio_beat_phase_ms'] = 0
 
     def save(self):
         try:
             j = json.dumps(self)
             with open(self.SETTINGS_FILE, 'w') as file:
                 file.write(j)
+            if not getattr(self, "_quiet", False):
                 print("Settings saved successfully.")
         except Exception as e:
             print(f"Error saving settings: {e}")
@@ -96,9 +106,11 @@ class Settings(dict):
                 loaded_settings = json.load(file)
             self.update(loaded_settings)
             loaded_from_file = True
+            if not getattr(self, "_quiet", False):
                 print("Settings loaded successfully.")
         except Exception as e:
-            print(f"Error loading settings")
+            if not getattr(self, "_quiet", False):
+                print(f"Error loading settings: {e}")
             self.clear()
         finally:
             # Ensure defaults are set even if file exists but is missing keys
@@ -106,3 +118,18 @@ class Settings(dict):
             # Only save if file didn't exist or was invalid
             if not loaded_from_file:
                 self.save()
+
+
+def get_settings() -> Settings:
+    """Process-wide settings instance (avoid re-reading settings.json on every request)."""
+    global _settings_singleton
+    if _settings_singleton is None:
+        _settings_singleton = Settings()
+    return _settings_singleton
+
+
+def reload_settings() -> Settings:
+    """Re-read settings.json (e.g. after external file edit)."""
+    global _settings_singleton
+    _settings_singleton = Settings(quiet=True)
+    return _settings_singleton

src/static/audio.js

@@ -1,5 +1,6 @@
 (() => {
   let pollTimer = null;
+  let audioDetectorRunning = false;
   let lastBeatSeq = 0;
   let lastLoggedSequenceBeatFractions = "";
   /** Prior poll had server zone sequence playback active (`status.sequence.active === true`). */
@@ -14,49 +15,6 @@
   /** @type {Set<ReturnType<typeof setTimeout>>} */
   const pendingBeatPhaseTimers = new Set();
 
-  const STORAGE_KEY = "led-controller-audio-restore";
-  const PHASE_MS_KEY = "led-controller-audio-beat-phase-ms";
-  const STORAGE_VERSION = 1;
-
-  function readRestorePrefs() {
-    try {
-      const raw = localStorage.getItem(STORAGE_KEY);
-      if (!raw) return null;
-      const o = JSON.parse(raw);
-      if (!o || o.v !== STORAGE_VERSION || !o.restore) return null;
-      return {
-        override: typeof o.override === "string" ? o.override : "",
-        select: typeof o.select === "string" ? o.select : "",
-      };
-    } catch {
-      return null;
-    }
-  }
-
-  function writeRestorePrefs(override, select) {
-    try {
-      localStorage.setItem(
-        STORAGE_KEY,
-        JSON.stringify({
-          v: STORAGE_VERSION,
-          restore: true,
-          override: override || "",
-          select: select || "",
-        }),
-      );
-    } catch (e) {
-      console.warn("audio restore prefs save failed", e);
-    }
-  }
-
-  function clearRestorePrefs() {
-    try {
-      localStorage.removeItem(STORAGE_KEY);
-    } catch (e) {
-      console.warn("audio restore prefs clear failed", e);
-    }
-  }
-
   function el(id) {
     return document.getElementById(id);
   }
@@ -155,21 +113,115 @@
     node.textContent = `${label}${conf}`;
   }
 
+  /** @param {Record<string, unknown>} status */
+  function updateBarPhaseDisplay(status) {
+    const readout = String((status && status.bar_phase_readout) || "").trim();
+    const phaseConf = Number((status && status.phase_confidence) || 0);
+    const downbeat = !!(status && status.is_downbeat);
+    let text = readout || "--";
+    if (readout && Number.isFinite(phaseConf) && phaseConf > 0) {
+      text = `${text} (${Math.round(phaseConf * 100)}%)`;
+    }
+    for (const id of ["audio-bar-phase-value", "audio-top-bar-phase"]) {
+      const node = el(id);
+      if (!node) continue;
+      node.textContent = status && status.running ? text : "";
+      node.classList.toggle("is-downbeat", downbeat && !!readout);
+    }
+  }
+
   function setTopBpmVisible(on) {
     const top = el("audio-top-indicator");
     if (!top) return;
     top.classList.toggle("audio-running", !!on);
   }
 
+  function setNavResetVisible(on) {
+    for (const id of ["audio-nav-reset-btn", "audio-nav-reset-mobile"]) {
+      const node = el(id);
+      if (node) node.hidden = !on;
+    }
+  }
+
+  async function resetAudioTracking() {
+    try {
+      const res = await fetch("/api/audio/reset", {
+        method: "POST",
+        headers: { Accept: "application/json" },
+      });
+      if (!res.ok) {
+        const data = await res.json().catch(() => ({}));
+        console.warn("audio reset failed", data.error || res.status);
+        return;
+      }
+      await pollStatus();
+    } catch (e) {
+      console.warn("audio reset failed", e);
+    }
+  }
+
+  function updateSequenceSyncControls(zoneSeqActive) {
+    const topSync = el("audio-top-beat-sync");
+    if (topSync) {
+      topSync.disabled = audioDetectorRunning && !zoneSeqActive;
+      topSync.title = !audioDetectorRunning
+        ? "Start beat detection"
+        : zoneSeqActive
+          ? "Sync step to music (S)"
+          : "Beat detection running";
+    }
+    const modalBeat = el("audio-modal-beat-readout");
+    if (modalBeat) modalBeat.disabled = !zoneSeqActive;
+    const passBtn = el("audio-sync-pass-btn");
+    if (passBtn) passBtn.disabled = !zoneSeqActive;
+  }
+
+  async function handleTopBpmButtonClick() {
+    if (!audioDetectorRunning) {
+      try {
+        await startAudio();
+      } catch (e) {
+        console.error("audio start failed", e);
+        alert("Failed to start audio input. Check mic permissions.");
+      }
+      return;
+    }
+    try {
+      await syncSequenceBeatPhase("step");
+    } catch (e) {
+      console.warn("sequence beat sync failed", e);
+    }
+  }
+
+  async function syncSequenceBeatPhase(mode) {
+    const res = await fetch("/sequences/sync-phase", {
+      method: "POST",
+      headers: { "Content-Type": "application/json", Accept: "application/json" },
+      body: JSON.stringify({ mode: mode || "step" }),
+    });
+    if (!res.ok) {
+      const data = await res.json().catch(() => ({}));
+      throw new Error(data.error || `Sync failed (${res.status})`);
+    }
+    await pollStatus();
+  }
+
+  function isTypingTarget(target) {
+    if (!target || typeof target !== "object") return false;
+    const tag = String(target.tagName || "").toLowerCase();
+    return tag === "input" || tag === "textarea" || tag === "select" || target.isContentEditable;
+  }
+
   function flashBeat() {
     const node = el("audio-beat-flash");
     if (!node) return;
     node.classList.add("active");
     setTimeout(() => node.classList.remove("active"), 80);
+    const syncBtn = el("audio-top-beat-sync");
     const top = el("audio-top-indicator");
-    if (top && top.classList.contains("audio-running")) {
+    if (syncBtn && top && top.classList.contains("audio-running")) {
-      top.classList.add("flash");
+      syncBtn.classList.add("flash");
-      setTimeout(() => top.classList.remove("flash"), 90);
+      setTimeout(() => syncBtn.classList.remove("flash"), 90);
     }
   }
 
@@ -184,17 +236,17 @@
       const n = parseInt(String(inp.value).trim(), 10);
       if (Number.isFinite(n)) return Math.min(500, Math.max(0, n));
     }
-    try {
-      const v = parseInt(localStorage.getItem(PHASE_MS_KEY) || "0", 10);
-      return Number.isFinite(v) ? Math.min(500, Math.max(0, v)) : 0;
-    } catch {
     return 0;
   }
-  }
 
-  function persistBeatPhaseMs() {
+  async function persistBeatPhaseMs() {
+    const ms = getBeatPhaseDelayMs();
     try {
-      localStorage.setItem(PHASE_MS_KEY, String(getBeatPhaseDelayMs()));
+      await fetch("/settings", {
+        method: "PUT",
+        headers: { "Content-Type": "application/json", Accept: "application/json" },
+        body: JSON.stringify({ audio_beat_phase_ms: ms }),
+      });
     } catch (e) {
       console.warn("beat phase ms save failed", e);
     }
@@ -223,7 +275,9 @@
 
   /** Stop detector and polling; does not clear “resume on load” prefs (used before restart). */
   async function stopAudioOnly() {
+    audioDetectorRunning = false;
     setTopBpmVisible(false);
+    setNavResetVisible(false);
     clearBeatPhaseTimers();
     if (pollTimer) {
       clearInterval(pollTimer);
@@ -241,10 +295,9 @@
     }
   }
 
-  /** User-initiated stop: also forget auto-restart on next page load. */
+  /** User-initiated stop (run intent cleared on server). */
   async function stopAudio() {
     await stopAudioOnly();
-    clearRestorePrefs();
   }
 
   async function pollStatus() {
@@ -258,24 +311,34 @@
           node.textContent = String(status.error).trim().slice(0, 120);
         }
         updateBeatReadoutDisplays({});
+        audioDetectorRunning = !!status.running;
         updateBpmDisplay(null);
         setTopBpmVisible(!!status.running);
+        setNavResetVisible(!!status.running);
         if (!status.running && pollTimer) {
           clearInterval(pollTimer);
           pollTimer = null;
         }
         return;
       }
-      setTopBpmVisible(!!status.running);
+      audioDetectorRunning = !!status.running;
+      const zoneSeqActive = sequencePlaybackActiveFromStatus(status);
+      setTopBpmVisible(!!status.running || zoneSeqActive);
+      setNavResetVisible(!!status.running);
+      updateSequenceSyncControls(zoneSeqActive);
       updateBpmDisplay(status.bpm);
       updateHitTypeDisplay(status.beat_type, Number(status.beat_type_confidence));
+      updateBarPhaseDisplay(status);
+      applyServerAudioUiFields(status);
+      if (typeof window.applySequenceSwitchWaitFromServer === "function") {
+        window.applySequenceSwitchWaitFromServer(status.sequence_switch_wait);
+      }
       /*
        * `status.beat_seq` is cumulative since Audio Start — used only for flash / sticky idle
        * after sequence ends. Preset and sequence loop counts come from `manual_beat_stride` /
        * `sequence` on each poll.
        */
       const beatSeq = Number(status.beat_seq || 0);
-      const zoneSeqActive = sequencePlaybackActiveFromStatus(status);
       const endedSeq = prevZoneSequencePlaybackActive && !zoneSeqActive;
       const startedSeq = !prevZoneSequencePlaybackActive && zoneSeqActive;
       prevZoneSequencePlaybackActive = zoneSeqActive;
@@ -320,7 +383,11 @@
     const selected = el("audio-device-select")?.value || "";
     const rawDevice = override !== "" ? override : selected;
     const numeric = rawDevice !== "" && /^-?\d+$/.test(rawDevice) ? Number(rawDevice) : rawDevice;
-    const body = { device: rawDevice === "" ? null : numeric };
+    const body = {
+      device: rawDevice === "" ? null : numeric,
+      device_override: override,
+      device_select: selected,
+    };
     const res = await fetch("/api/audio/start", {
       method: "POST",
       headers: { "Content-Type": "application/json" },
@@ -330,7 +397,6 @@
       const data = await res.json().catch(() => ({}));
       throw new Error(data.error || "Failed to start audio detector");
     }
-    writeRestorePrefs(override, selected);
     updateBpmDisplay(null);
     updateHitTypeDisplay("unknown", NaN);
     pollTimer = setInterval(pollStatus, 250);
@@ -378,6 +444,7 @@
     const closeBtn = el("audio-close-btn");
     const startBtn = el("audio-start-btn");
     const stopBtn = el("audio-stop-btn");
+    const navResetBtn = el("audio-nav-reset-btn");
     const refreshBtn = el("audio-refresh-btn");
     if (!modal || !openBtn) return;
 
@@ -410,6 +477,9 @@
         await stopAudio();
       });
     }
+    if (navResetBtn) {
+      navResetBtn.addEventListener("click", () => resetAudioTracking());
+    }
     if (refreshBtn) {
       refreshBtn.addEventListener("click", async () => {
         try {
@@ -422,17 +492,41 @@
 
     const phaseInp = el("audio-beat-phase-ms");
     if (phaseInp) {
+      phaseInp.addEventListener("change", () => {
+        void persistBeatPhaseMs();
+      });
+      phaseInp.addEventListener("input", () => {
+        void persistBeatPhaseMs();
+      });
+    }
+
+    const bindSync = (node, mode) => {
+      if (!node) return;
+      node.addEventListener("click", async () => {
         try {
-        const stored = parseInt(localStorage.getItem(PHASE_MS_KEY) || "0", 10);
+          await syncSequenceBeatPhase(mode);
-        if (Number.isFinite(stored)) {
+        } catch (e) {
-          phaseInp.value = String(Math.min(500, Math.max(0, stored)));
+          console.warn("sequence beat sync failed", e);
         }
-      } catch {
+      });
-        /* ignore */
+    };
-      }
+    const topBpm = el("audio-top-beat-sync");
-      phaseInp.addEventListener("change", () => persistBeatPhaseMs());
+    if (topBpm) {
-      phaseInp.addEventListener("input", () => persistBeatPhaseMs());
+      topBpm.addEventListener("click", () => {
+        void handleTopBpmButtonClick();
+      });
     }
+    bindSync(el("audio-modal-beat-readout"), "step");
+    bindSync(el("audio-sync-pass-btn"), "pass");
+
+    document.addEventListener("keydown", (ev) => {
+      if (ev.defaultPrevented || ev.repeat || isTypingTarget(ev.target)) return;
+      const k = String(ev.key || "").toLowerCase();
+      if (k !== "s") return;
+      ev.preventDefault();
+      const mode = ev.shiftKey ? "pass" : "step";
+      void syncSequenceBeatPhase(mode).catch((e) => console.warn("sequence beat sync failed", e));
+    });
   }
 
   async function resumePollingIfDetectorRunning() {
@@ -440,38 +534,74 @@
       const res = await fetch("/api/audio/status", { cache: "no-store" });
       const data = await res.json();
       const status = data?.status || {};
+      audioDetectorRunning = !!status.running;
       if (status.running && !pollTimer) {
         pollTimer = setInterval(pollStatus, 250);
         lastBeatSeq = Number(status.beat_seq || 0);
         prevZoneSequencePlaybackActive = sequencePlaybackActiveFromStatus(status);
         await pollStatus();
+      } else {
+        updateSequenceSyncControls(sequencePlaybackActiveFromStatus(status));
       }
     } catch (e) {
       console.warn("audio resume poll check failed", e);
     }
   }
 
-  /**
+  /** Apply server-owned audio UI fields from status (device form, beat phase delay). */
-   * Apply browser-stored device fields only (GET /devices list); does not start detection.
+  function applyServerAudioUiFields(status) {
-   * Beat detector run/stop is server-owned (`db/audio_run.json` + explicit Start/Stop in UI).
+    if (!status || typeof status !== "object") return;
-   */
+    const run = status.audio_run;
-  async function applySavedAudioDeviceFormOnly() {
+    if (run && typeof run === "object") {
-    const prefs = readRestorePrefs();
-    if (!prefs) return;
       const ov = el("audio-device-override");
       const sel = el("audio-device-select");
-    if (ov) ov.value = prefs.override || "";
+      if (ov && run.device_override != null) ov.value = String(run.device_override);
+      if (sel && run.device_select) sel.value = String(run.device_select);
+    }
+    const phaseInp = el("audio-beat-phase-ms");
+    if (
+      phaseInp &&
+      status.beat_phase_ms != null &&
+      document.activeElement !== phaseInp
+    ) {
+      const ms = parseInt(String(status.beat_phase_ms), 10);
+      if (Number.isFinite(ms)) {
+        phaseInp.value = String(Math.min(500, Math.max(0, ms)));
+      }
+    }
+  }
+
+  async function loadServerAudioUiFields() {
     try {
       await refreshDevices();
     } catch (e) {
       console.warn("audio device list refresh failed", e);
     }
-    if (sel && prefs.select) sel.value = prefs.select;
+    try {
+      const res = await fetch("/api/audio/status", { cache: "no-store" });
+      const data = await res.json();
+      applyServerAudioUiFields(data?.status || {});
+    } catch (e) {
+      console.warn("audio status load failed", e);
     }
+  }
+
+  /** Called from sequences.js when server playback starts/stops without audio polling. */
+  window.ledControllerSequencePlaybackChanged = (active) => {
+    updateSequenceSyncControls(!!active);
+    if (active) {
+      setTopBpmVisible(true);
+      return;
+    }
+    if (!pollTimer) {
+      setTopBpmVisible(false);
+      updateSequenceSyncControls(false);
+    }
+  };
 
   document.addEventListener("DOMContentLoaded", async () => {
     bind();
+    await loadServerAudioUiFields();
     await resumePollingIfDetectorRunning();
-    await applySavedAudioDeviceFormOnly();
   });
 })();

src/static/bundle_io.js

@@ -0,0 +1,48 @@
+/** Download/upload JSON bundles for profile, preset, and sequence import/export. */
+
+window.downloadJsonFile = function downloadJsonFile(filename, data) {
+  const text = typeof data === 'string' ? data : JSON.stringify(data, null, 2);
+  const blob = new Blob([text], { type: 'application/json' });
+  const url = URL.createObjectURL(blob);
+  const a = document.createElement('a');
+  a.href = url;
+  a.download = filename || 'bundle.json';
+  document.body.appendChild(a);
+  a.click();
+  a.remove();
+  URL.revokeObjectURL(url);
+};
+
+window.pickJsonFile = function pickJsonFile() {
+  return new Promise((resolve) => {
+    const input = document.createElement('input');
+    input.type = 'file';
+    input.accept = 'application/json,.json';
+    input.style.display = 'none';
+    document.body.appendChild(input);
+    input.addEventListener('change', () => {
+      const file = input.files && input.files[0];
+      input.remove();
+      if (!file) {
+        resolve(null);
+        return;
+      }
+      const reader = new FileReader();
+      reader.onload = () => resolve(reader.result);
+      reader.onerror = () => resolve(null);
+      reader.readAsText(file);
+    });
+    input.click();
+  });
+};
+
+window.parseJsonFileText = function parseJsonFileText(text) {
+  if (text == null || text === '') {
+    return null;
+  }
+  try {
+    return JSON.parse(text);
+  } catch (e) {
+    return null;
+  }
+};

src/static/help.js

@@ -131,7 +131,7 @@ document.addEventListener('DOMContentLoaded', () => {
         return;
       }
       try {
-        const response = await fetch('/settings/settings', {
+        const response = await fetch('/settings', {
           method: 'PUT',
           headers: { 'Content-Type': 'application/json' },
           body: JSON.stringify({

src/static/led_tool.js

@@ -2,254 +2,21 @@ document.addEventListener('DOMContentLoaded', () => {
   const openBtn = document.getElementById('led-tool-btn');
   const modal = document.getElementById('led-tool-modal');
   const closeBtn = document.getElementById('led-tool-close-btn');
-  const refreshPortsBtn = document.getElementById('led-tool-refresh-ports-btn');
+  const iframe = document.getElementById('led-tool-iframe');
-  const form = document.getElementById('led-tool-form');
-  const readBtn = document.getElementById('led-tool-read-btn');
-  const resetBtn = document.getElementById('led-tool-reset-btn');
-  const portSelect = document.getElementById('led-tool-port');
-  const outputEl = document.getElementById('led-tool-output');
-  const messageEl = document.getElementById('led-tool-message');
 
-  if (!openBtn || !modal || !form || !portSelect || !outputEl || !messageEl) {
+  if (!openBtn || !modal || !iframe) {
     return;
   }
 
-  const showMessage = (text, type = 'success') => {
-    messageEl.textContent = text;
-    messageEl.className = `message ${type} show`;
-  };
-
-  const setOutput = (text) => {
-    outputEl.value = text || '';
-  };
-
-  const parseApiResponse = async (response) => {
-    const bodyText = await response.text();
-    let data = null;
-    try {
-      data = bodyText ? JSON.parse(bodyText) : {};
-    } catch (error) {
-      data = { error: bodyText || `HTTP ${response.status}` };
-    }
-    return data;
-  };
-
-  const setFieldValue = (id, value) => {
-    const el = document.getElementById(id);
-    if (!el) return;
-    if (value === undefined || value === null) return;
-    el.value = String(value);
-  };
-
-  const populateFormFromSettings = (settings) => {
-    if (!settings || typeof settings !== 'object') return false;
-    setFieldValue('led-tool-name', settings.name);
-    setFieldValue('led-tool-num-leds', settings.num_leds);
-    setFieldValue('led-tool-led-pin', settings.led_pin);
-    setFieldValue('led-tool-brightness', settings.brightness);
-    setFieldValue('led-tool-transport', settings.transport_type);
-    setFieldValue('led-tool-ssid', settings.ssid);
-    setFieldValue('led-tool-password', settings.password);
-    setFieldValue('led-tool-wifi-channel', settings.wifi_channel);
-    setFieldValue('led-tool-default', settings.default);
-    return true;
-  };
-
-  const loadPorts = async () => {
-    const defaultPort = '/dev/ttyACM0';
-    try {
-      const response = await fetch('/led-tool/ports');
-      const data = await response.json();
-      const previous = portSelect.value;
-      portSelect.innerHTML = '<option value="">Select a serial port</option>';
-
-      for (const port of data.ports || []) {
-        const option = document.createElement('option');
-        option.value = port.device;
-        option.textContent = `${port.device} - ${port.description || 'Unknown'}`;
-        portSelect.appendChild(option);
-      }
-      if (previous) {
-        portSelect.value = previous;
-      } else if ((data.ports || []).some((p) => p.device === defaultPort)) {
-        portSelect.value = defaultPort;
-      } else {
-        const fallback = document.createElement('option');
-        fallback.value = defaultPort;
-        fallback.textContent = `${defaultPort} - default`;
-        portSelect.appendChild(fallback);
-        portSelect.value = defaultPort;
-      }
-
-      if (!data.led_cli_exists) {
-        showMessage('led-tool/cli.py was not found on the host.', 'error');
-      } else if ((data.ports || []).length === 0) {
-        showMessage('No serial ports found.', 'error');
-      } else {
-        showMessage(`Found ${(data.ports || []).length} serial port(s).`, 'success');
-      }
-    } catch (error) {
-      showMessage(`Failed to read serial ports: ${error.message}`, 'error');
-    }
-  };
-
   openBtn.addEventListener('click', () => {
+    iframe.src = '/led-tool/editor';
     modal.classList.add('active');
-    loadPorts();
   });
 
   if (closeBtn) {
     closeBtn.addEventListener('click', () => {
       modal.classList.remove('active');
+      iframe.src = 'about:blank';
     });
   }
-
-  if (refreshPortsBtn) {
-    refreshPortsBtn.addEventListener('click', () => {
-      loadPorts();
-    });
-  }
-
-  if (readBtn) {
-    readBtn.addEventListener('click', async () => {
-      const port = portSelect.value.trim();
-      if (!port) {
-        showMessage('Select a serial port first.', 'error');
-        return;
-      }
-      setOutput('Reading settings from device...');
-      showMessage('Reading settings over USB...', 'success');
-      try {
-        const response = await fetch(`/led-tool/settings?port=${encodeURIComponent(port)}`);
-        const data = await parseApiResponse(response);
-        if (!response.ok) {
-          showMessage(data.error || 'Read failed.', 'error');
-          setOutput(data.error || 'Request failed.');
-          return;
-        }
-        const output = [
-          `exit code: ${data.returncode}`,
-          '',
-          'stdout:',
-          data.stdout || '(none)',
-          '',
-          'stderr:',
-          data.stderr || '(none)',
-        ].join('\n');
-        setOutput(output);
-        if (data.ok) {
-          const populated = populateFormFromSettings(data.settings);
-          if (populated) {
-            showMessage('Settings read and fields populated.', 'success');
-          } else {
-            showMessage('Settings read successfully.', 'success');
-          }
-        } else {
-          showMessage('Read completed with errors. Check output.', 'error');
-        }
-      } catch (error) {
-        showMessage(`Request failed: ${error.message}`, 'error');
-        setOutput(error.message);
-      }
-    });
-  }
-
-  if (resetBtn) {
-    resetBtn.addEventListener('click', async () => {
-      const port = portSelect.value.trim();
-      if (!port) {
-        showMessage('Select a serial port first.', 'error');
-        return;
-      }
-      setOutput('Resetting device and following output...');
-      showMessage('Resetting device over USB...', 'success');
-      try {
-        const response = await fetch('/led-tool/reset', {
-          method: 'POST',
-          headers: { 'Content-Type': 'application/json' },
-          body: JSON.stringify({ port }),
-        });
-        const data = await parseApiResponse(response);
-        if (!response.ok) {
-          showMessage(data.error || 'Reset failed.', 'error');
-          setOutput(data.error || 'Request failed.');
-          return;
-        }
-        const output = [
-          `exit code: ${data.returncode}`,
-          '',
-          'stdout:',
-          data.stdout || '(none)',
-          '',
-          'stderr:',
-          data.stderr || '(none)',
-        ].join('\n');
-        setOutput(output);
-        if (data.ok) {
-          showMessage('Device reset complete.', 'success');
-        } else {
-          showMessage('Reset completed with errors. Check output.', 'error');
-        }
-      } catch (error) {
-        showMessage(`Request failed: ${error.message}`, 'error');
-        setOutput(error.message);
-      }
-    });
-  }
-
-  form.addEventListener('submit', async (event) => {
-    event.preventDefault();
-    const port = portSelect.value.trim();
-    if (!port) {
-      showMessage('Select a serial port first.', 'error');
-      return;
-    }
-
-    const payload = {
-      port,
-      name: document.getElementById('led-tool-name')?.value?.trim() || '',
-      num_leds: document.getElementById('led-tool-num-leds')?.value?.trim() || '',
-      led_pin: document.getElementById('led-tool-led-pin')?.value?.trim() || '',
-      brightness: document.getElementById('led-tool-brightness')?.value?.trim() || '',
-      transport: document.getElementById('led-tool-transport')?.value?.trim() || '',
-      ssid: document.getElementById('led-tool-ssid')?.value?.trim() || '',
-      password: document.getElementById('led-tool-password')?.value?.trim() || '',
-      wifi_channel: document.getElementById('led-tool-wifi-channel')?.value?.trim() || '',
-      default: document.getElementById('led-tool-default')?.value?.trim() || '',
-    };
-
-    setOutput('Running led-tool command...');
-    showMessage('Running command over USB...', 'success');
-    try {
-      const response = await fetch('/led-tool/settings', {
-        method: 'POST',
-        headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify(payload),
-      });
-      const data = await parseApiResponse(response);
-      if (!response.ok) {
-        showMessage(data.error || 'Command failed.', 'error');
-        setOutput(data.error || 'Request failed.');
-        return;
-      }
-      const output = [
-        `exit code: ${data.returncode}`,
-        '',
-        'stdout:',
-        data.stdout || '(none)',
-        '',
-        'stderr:',
-        data.stderr || '(none)',
-      ].join('\n');
-      setOutput(output);
-      if (data.ok) {
-        showMessage('Settings applied via USB.', 'success');
-      } else {
-        showMessage('Command completed with errors. Check output.', 'error');
-      }
-    } catch (error) {
-      showMessage(`Request failed: ${error.message}`, 'error');
-      setOutput(error.message);
-    }
-  });
 });

src/static/numpad.js

@@ -0,0 +1,117 @@
+/**
+ * Bluetooth / USB HID numpad shortcuts (browser focus required).
+ *
+ * Numpad1–9,0     → zone 1–10 (visible zone list order)
+ * NumpadEnter     → sequence beat sync (step), same as S
+ * NumpadDecimal   → sequence beat sync (pass), same as Shift+S
+ * NumpadMultiply  → reset audio detector
+ * NumpadAdd       → brightness +16
+ * NumpadSubtract  → brightness −16
+ * NumpadDivide    → stop zone sequence playback
+ */
+(() => {
+  const BRIGHTNESS_STEP = 16;
+
+  function isTypingTarget(target) {
+    if (!target || typeof target !== "object") return false;
+    const tag = String(target.tagName || "").toLowerCase();
+    return tag === "input" || tag === "textarea" || tag === "select" || target.isContentEditable;
+  }
+
+  function zoneIdsInListOrder() {
+    return [...document.querySelectorAll("#zones-list .zone-button[data-zone-id]")]
+      .map((el) => el.getAttribute("data-zone-id"))
+      .filter((id) => id != null && id !== "");
+  }
+
+  async function selectZoneByListIndex(oneBased) {
+    const order = zoneIdsInListOrder();
+    if (oneBased < 1 || oneBased > order.length) return;
+    const zoneId = order[oneBased - 1];
+    if (window.tabsManager && typeof window.tabsManager.selectZone === "function") {
+      await window.tabsManager.selectZone(zoneId);
+    } else if (typeof selectZone === "function") {
+      await selectZone(zoneId);
+    }
+  }
+
+  async function syncSequenceBeatPhase(mode) {
+    const res = await fetch("/sequences/sync-phase", {
+      method: "POST",
+      headers: { "Content-Type": "application/json", Accept: "application/json" },
+      body: JSON.stringify({ mode: mode || "step" }),
+    });
+    if (!res.ok) {
+      const data = await res.json().catch(() => ({}));
+      throw new Error(data.error || `Sync failed (${res.status})`);
+    }
+  }
+
+  async function resetAudioTracking() {
+    const res = await fetch("/api/audio/reset", {
+      method: "POST",
+      headers: { Accept: "application/json" },
+    });
+    if (!res.ok) {
+      const data = await res.json().catch(() => ({}));
+      throw new Error(data.error || `Reset failed (${res.status})`);
+    }
+  }
+
+  function adjustZoneBrightness(delta) {
+    const zoneId =
+      (window.tabsManager && typeof window.tabsManager.getCurrentTabId === "function"
+        ? window.tabsManager.getCurrentTabId()
+        : null) ||
+      (window.tabsManager && typeof window.tabsManager.getCurrentZoneId === "function"
+        ? window.tabsManager.getCurrentZoneId()
+        : null);
+    if (!zoneId) return;
+    const slider =
+      document.getElementById("header-brightness-slider") ||
+      document.getElementById("menu-brightness-slider");
+    if (!slider) return;
+    const cur = parseInt(slider.value, 10);
+    const base = Number.isFinite(cur) ? cur : 127;
+    const next = Math.max(0, Math.min(255, base + delta));
+    if (String(slider.value) === String(next)) return;
+    slider.value = String(next);
+    slider.dispatchEvent(new Event("input", { bubbles: true }));
+  }
+
+  async function stopSequencePlayback() {
+    if (typeof window.stopZoneSequencePlayback === "function") {
+      await window.stopZoneSequencePlayback(true);
+    }
+  }
+
+  /** @type {Record<string, () => void | Promise<void>>} */
+  const actions = {
+    NumpadEnter: () => syncSequenceBeatPhase("step"),
+    NumpadDecimal: () => syncSequenceBeatPhase("pass"),
+    NumpadMultiply: () => resetAudioTracking(),
+    NumpadAdd: () => adjustZoneBrightness(BRIGHTNESS_STEP),
+    NumpadSubtract: () => adjustZoneBrightness(-BRIGHTNESS_STEP),
+    NumpadDivide: () => stopSequencePlayback(),
+    Numpad1: () => selectZoneByListIndex(1),
+    Numpad2: () => selectZoneByListIndex(2),
+    Numpad3: () => selectZoneByListIndex(3),
+    Numpad4: () => selectZoneByListIndex(4),
+    Numpad5: () => selectZoneByListIndex(5),
+    Numpad6: () => selectZoneByListIndex(6),
+    Numpad7: () => selectZoneByListIndex(7),
+    Numpad8: () => selectZoneByListIndex(8),
+    Numpad9: () => selectZoneByListIndex(9),
+    Numpad0: () => selectZoneByListIndex(10),
+  };
+
+  document.addEventListener("keydown", (ev) => {
+    if (ev.defaultPrevented || ev.repeat || isTypingTarget(ev.target)) return;
+    const code = ev.code;
+    if (!code || !code.startsWith("Numpad")) return;
+    const action = actions[code];
+    if (!action) return;
+    ev.preventDefault();
+    Promise.resolve(action()).catch((e) => console.warn("numpad shortcut failed:", e));
+  });
+})();

src/static/patterns.js

@@ -573,7 +573,12 @@ document.addEventListener('DOMContentLoaded', () => {
             n3: coercePresetInt(preset.n3),
             n4: coercePresetInt(preset.n4),
             n5: coercePresetInt(preset.n5),
-            n6: coercePresetInt(preset.n6),
+            n6: (() => {
+              if (preset.mode !== undefined && preset.mode !== null && preset.mode !== '') {
+                return coercePresetInt(preset.mode);
+              }
+              return coercePresetInt(preset.n6);
+            })(),
           };
         });
         if (!Object.keys(wirePresets).length) {

src/static/presets.js

@@ -4,6 +4,25 @@ let espnowSocketReady = false;
 let espnowPendingMessages = [];
 let currentProfileIdCache = null;
 
+function coercePresetInt(v, def = 0) {
+  if (typeof v === 'number' && Number.isFinite(v)) {
+    return v;
+  }
+  const t = parseInt(String(v), 10);
+  return Number.isFinite(t) ? t : def;
+}
+
+/** Style variant for wire ``n6``; presets may store ``mode`` or legacy ``n6``. */
+function presetWireN6(preset, def = 0) {
+  if (!preset || typeof preset !== 'object') {
+    return def;
+  }
+  if (preset.mode !== undefined && preset.mode !== null && preset.mode !== '') {
+    return coercePresetInt(preset.mode, def);
+  }
+  return coercePresetInt(preset.n6, def);
+}
+
 const getCurrentProfileId = async () => {
   try {
     const res = await fetch('/profiles/current', { headers: { Accept: 'application/json' } });
@@ -243,6 +262,10 @@ document.addEventListener('DOMContentLoaded', () => {
   const presetSaveButton = document.getElementById('preset-save-btn');
   const presetAddFromPaletteButton = document.getElementById('preset-add-from-palette-btn');
   const presetBackgroundFromPaletteButton = document.getElementById('preset-background-from-palette-btn');
+  const presetModeInput = document.getElementById('preset-mode-input');
+  const presetModeGroup = document.getElementById('preset-mode-group');
+  const presetReverseInput = document.getElementById('preset-reverse-input');
+  const presetReverseGroup = document.getElementById('preset-reverse-group');
 
   if (!presetsButton || !presetsModal || !presetsList || !presetSaveButton) {
     return;
@@ -297,7 +320,8 @@ document.addEventListener('DOMContentLoaded', () => {
       patternConfig.parameter_mappings &&
       typeof patternConfig.parameter_mappings === 'object'
     ) {
-      patternConfig = patternConfig.parameter_mappings;
+      const { parameter_mappings: pm, data: _data, ...rest } = patternConfig;
+      patternConfig = { ...rest, ...pm };
     }
     return patternConfig && typeof patternConfig === 'object' ? patternConfig : null;
   };
@@ -311,6 +335,62 @@ document.addEventListener('DOMContentLoaded', () => {
     return cfg.supports_manual !== false;
   };
 
+  const getPatternModeOptions = (patternName) => {
+    const cfg = resolvePatternConfig(patternName);
+    if (!cfg || typeof cfg.mode !== 'object' || cfg.mode === null || Array.isArray(cfg.mode)) {
+      return null;
+    }
+    const entries = Object.entries(cfg.mode).filter(
+      ([, label]) => typeof label === 'string' && label.trim(),
+    );
+    if (entries.length < 2) {
+      return null;
+    }
+    entries.sort((a, b) => parseInt(a[0], 10) - parseInt(b[0], 10));
+    return entries;
+  };
+
+  const patternSupportsModes = (patternName) => getPatternModeOptions(patternName) !== null;
+
+  const patternSupportsReverse = (patternName) => {
+    const cfg = resolvePatternConfig(patternName);
+    return !!(cfg && cfg.supports_reverse);
+  };
+
+  const setPresetReverseFieldVisible = (show) => {
+    if (!presetReverseGroup) {
+      return;
+    }
+    presetReverseGroup.hidden = !show;
+    presetReverseGroup.style.display = show ? '' : 'none';
+    if (!show && presetReverseInput) {
+      presetReverseInput.checked = false;
+    }
+  };
+
+  const setPresetModeFieldVisible = (show) => {
+    if (!presetModeGroup) {
+      return;
+    }
+    presetModeGroup.hidden = !show;
+    presetModeGroup.style.display = show ? '' : 'none';
+    if (!show && presetModeInput) {
+      presetModeInput.innerHTML = '';
+    }
+  };
+
+  const presetStoredMode = (preset) => {
+    if (!preset || typeof preset !== 'object') {
+      return 0;
+    }
+    if (preset.mode !== undefined && preset.mode !== null && preset.mode !== '') {
+      const m = parseInt(String(preset.mode), 10);
+      return Number.isFinite(m) ? m : 0;
+    }
+    const n6 = parseInt(String(preset.n6), 10);
+    return Number.isFinite(n6) ? n6 : 0;
+  };
+
   const updateManualBeatNVisibility = () => {
     if (!presetManualBeatNWrap) {
       return;
@@ -711,6 +791,12 @@ document.addEventListener('DOMContentLoaded', () => {
       });
     }
 
+    if (presetReverseInput) {
+      const n5raw = preset.n5;
+      const n5 = typeof n5raw === 'number' ? n5raw : parseInt(String(n5raw != null ? n5raw : '0'), 10);
+      presetReverseInput.checked = Number.isFinite(n5) && n5 > 0;
+    }
+
     // Set n values, checking both n keys and descriptive names
     for (let i = 1; i <= 8; i++) {
       const nKey = `n${i}`;
@@ -734,7 +820,7 @@ document.addEventListener('DOMContentLoaded', () => {
     }
 
     // After values: show only mapped n params with labels from pattern.json; clear hidden inputs
-    updatePresetNLabels(patternName);
+    updatePresetNLabels(patternName, preset);
     updateManualModeAvailability();
     updatePresetEditorTabActionsVisibility();
   };
@@ -766,6 +852,10 @@ document.addEventListener('DOMContentLoaded', () => {
     if (presetManualModeInput) {
       presetManualModeInput.checked = false;
     }
+    if (presetReverseInput) {
+      presetReverseInput.checked = false;
+    }
+    setPresetReverseFieldVisible(false);
     if (presetManualBeatNInput) {
       presetManualBeatNInput.value = '1';
     }
@@ -793,10 +883,29 @@ document.addEventListener('DOMContentLoaded', () => {
     return section ? section.dataset.zoneId : null;
   };
 
-  const updatePresetEditorTabActionsVisibility = () => {
+  const updatePresetEditorTabActionsVisibility = async () => {
     if (!presetRemoveFromTabButton) return;
-    const show = Boolean(currentEditTabId && currentEditId);
+    if (!currentEditTabId || !currentEditId) {
-    presetRemoveFromTabButton.hidden = !show;
+      presetRemoveFromTabButton.hidden = true;
+      return;
+    }
+    try {
+      const tabRes = await fetch(`/zones/${currentEditTabId}`, {
+        headers: { Accept: 'application/json' },
+      });
+      if (!tabRes.ok) {
+        presetRemoveFromTabButton.hidden = false;
+        return;
+      }
+      const tabData = await tabRes.json();
+      const allowed =
+        typeof window.zoneAllowsPresets === 'function'
+          ? window.zoneAllowsPresets(tabData, currentEditTabId)
+          : true;
+      presetRemoveFromTabButton.hidden = !allowed;
+    } catch (e) {
+      presetRemoveFromTabButton.hidden = false;
+    }
   };
 
   const updateTabDefaultPreset = async (presetId) => {
@@ -827,8 +936,15 @@ document.addEventListener('DOMContentLoaded', () => {
     if (presetEditorModal) {
       presetEditorModal.classList.add('active');
     }
+    const patternName = presetPatternInput ? presetPatternInput.value : '';
+    const modeBefore = patternSupportsModes(patternName)
+      ? presetStoredMode({
+          mode: presetModeInput ? presetModeInput.value : undefined,
+          n6: getNumberInput('preset-n6-input'),
+        })
+      : 0;
     loadPatterns().then(() => {
-      updatePresetNLabels(presetPatternInput ? presetPatternInput.value : '');
+      updatePresetNLabels(patternName, { mode: modeBefore, n6: modeBefore });
       updateColorSectionVisibility();
     });
   };
@@ -859,11 +975,27 @@ document.addEventListener('DOMContentLoaded', () => {
       })(),
     };
 
-    // Always store numeric parameters as n1..n8.
+    // Always store numeric parameters as n1..n8 (except n6 when pattern uses mode).
+    const modeEntries = patternSupportsModes(payload.pattern)
+      ? getPatternModeOptions(payload.pattern)
+      : null;
+    const reverseField = patternSupportsReverse(payload.pattern);
     for (let i = 1; i <= 8; i++) {
       const nKey = `n${i}`;
+      if (modeEntries && nKey === 'n6') {
+        continue;
+      }
+      if (reverseField && nKey === 'n5') {
+        continue;
+      }
       payload[nKey] = getNumberInput(`preset-${nKey}-input`);
     }
+    if (reverseField) {
+      payload.n5 = presetReverseInput && presetReverseInput.checked ? 1 : 0;
+    }
+    if (modeEntries && presetModeInput) {
+      payload.mode = parseInt(presetModeInput.value, 10) || 0;
+    }
 
     return payload;
   };
@@ -950,30 +1082,8 @@ document.addEventListener('DOMContentLoaded', () => {
     }
   };
 
-  const updatePresetNLabels = (patternName) => {
+  const updatePresetNLabels = (patternName, presetForMode = null) => {
-    const rawPatternName = String(patternName || '').trim();
+    const patternConfig = resolvePatternConfig(patternName);
-    const normalizedPatternName = rawPatternName.endsWith('.py')
-      ? rawPatternName.slice(0, -3)
-      : rawPatternName;
-    let patternConfig =
-      (cachedPatterns && cachedPatterns[rawPatternName]) ||
-      (cachedPatterns && cachedPatterns[normalizedPatternName]) ||
-      null;
-    if (!patternConfig && cachedPatterns && typeof cachedPatterns === 'object') {
-      const lower = normalizedPatternName.toLowerCase();
-      const matchedKey = Object.keys(cachedPatterns).find(
-        (k) => String(k).toLowerCase() === lower,
-      );
-      if (matchedKey) {
-        patternConfig = cachedPatterns[matchedKey];
-      }
-    }
-    if (patternConfig && typeof patternConfig === 'object' && patternConfig.data && typeof patternConfig.data === 'object') {
-      patternConfig = patternConfig.data;
-    }
-    if (patternConfig && typeof patternConfig === 'object' && patternConfig.parameter_mappings && typeof patternConfig.parameter_mappings === 'object') {
-      patternConfig = patternConfig.parameter_mappings;
-    }
     const labels = {};
     const visibleNKeys = new Set();
 
@@ -989,9 +1099,45 @@ document.addEventListener('DOMContentLoaded', () => {
       });
     }
 
+    const modeEntries = patternSupportsModes(patternName) ? getPatternModeOptions(patternName) : null;
+    const reverseField = patternSupportsReverse(patternName);
+    if (modeEntries) {
+      visibleNKeys.delete('n6');
+    }
+    if (reverseField) {
+      visibleNKeys.delete('n5');
+    }
+    setPresetReverseFieldVisible(reverseField);
+    if (reverseField && presetReverseInput) {
+      const n5raw = presetForMode && presetForMode.n5 !== undefined ? presetForMode.n5 : 0;
+      const n5 = typeof n5raw === 'number' ? n5raw : parseInt(String(n5raw), 10);
+      presetReverseInput.checked = Number.isFinite(n5) && n5 > 0;
+    }
+    if (presetModeInput) {
+      if (modeEntries) {
+        setPresetModeFieldVisible(true);
+        presetModeInput.innerHTML = '';
+        modeEntries.forEach(([val, label]) => {
+          const opt = document.createElement('option');
+          opt.value = val;
+          opt.textContent = label.trim();
+          presetModeInput.appendChild(opt);
+        });
+        const modeVal = presetForMode ? presetStoredMode(presetForMode) : 0;
+        const modeStr = String(modeVal);
+        if ([...presetModeInput.options].some((o) => o.value === modeStr)) {
+          presetModeInput.value = modeStr;
+        } else if (presetModeInput.options.length) {
+          presetModeInput.selectedIndex = 0;
+        }
+      } else {
+        setPresetModeFieldVisible(false);
+      }
+    }
+
     const hasPatternMeta =
       patternConfig && typeof patternConfig === 'object' && Object.keys(patternConfig).length > 0;
-    const hasAnyNLabel = visibleNKeys.size > 0;
+    const hasAnyNLabel = visibleNKeys.size > 0 || Boolean(modeEntries);
 
     for (let i = 1; i <= 8; i++) {
       const nKey = `n${i}`;
@@ -1073,6 +1219,26 @@ document.addEventListener('DOMContentLoaded', () => {
         void sendPresetViaEspNow(presetId, preset || {}, []);
       });
 
+      const exportButton = document.createElement('button');
+      exportButton.className = 'btn btn-secondary btn-small';
+      exportButton.textContent = 'Export';
+      exportButton.addEventListener('click', async () => {
+        try {
+          const response = await fetch(`/presets/${presetId}/export`, {
+            headers: { Accept: 'application/json' },
+          });
+          if (!response.ok) {
+            throw new Error('Export failed');
+          }
+          const bundle = await response.json();
+          const safeName = ((preset && preset.name) || presetId).replace(/[^\w.-]+/g, '_');
+          window.downloadJsonFile(`preset-${safeName}.json`, bundle);
+        } catch (error) {
+          console.error('Export preset failed:', error);
+          alert('Failed to export preset.');
+        }
+      });
+
       const deleteButton = document.createElement('button');
       deleteButton.className = 'btn btn-danger btn-small';
       deleteButton.textContent = 'Delete';
@@ -1102,6 +1268,7 @@ document.addEventListener('DOMContentLoaded', () => {
       row.appendChild(label);
       row.appendChild(details);
       row.appendChild(editButton);
+      row.appendChild(exportButton);
       row.appendChild(sendButton);
       row.appendChild(deleteButton);
       presetsList.appendChild(row);
@@ -1148,6 +1315,34 @@ document.addEventListener('DOMContentLoaded', () => {
   if (presetsCloseButton) {
     presetsCloseButton.addEventListener('click', closeModal);
   }
+  const importPresetBtn = document.getElementById('import-preset-btn');
+  if (importPresetBtn) {
+    importPresetBtn.addEventListener('click', async () => {
+      const text = await window.pickJsonFile();
+      if (!text) return;
+      const bundle = window.parseJsonFileText(text);
+      if (!bundle || bundle.kind !== 'preset') {
+        alert('Invalid preset bundle file.');
+        return;
+      }
+      try {
+        const response = await fetch('/presets/import', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json', Accept: 'application/json' },
+          body: JSON.stringify({ bundle }),
+        });
+        if (!response.ok) {
+          const err = await response.json().catch(() => ({}));
+          throw new Error(err.error || 'Import failed');
+        }
+        await loadPresets();
+      } catch (error) {
+        console.error('Import preset failed:', error);
+        alert(error.message || 'Failed to import preset.');
+      }
+    });
+  }
+
   if (presetsAddButton) {
     presetsAddButton.addEventListener('click', () => {
       clearForm();
@@ -1199,6 +1394,22 @@ document.addEventListener('DOMContentLoaded', () => {
       return;
     }
 
+    try {
+      const zoneCheck = await fetch(`/zones/${zoneId}`, { headers: { Accept: 'application/json' } });
+      if (zoneCheck.ok) {
+        const zoneDoc = await zoneCheck.json();
+        if (
+          typeof window.zoneAllowsPresets === 'function' &&
+          !window.zoneAllowsPresets(zoneDoc, zoneId)
+        ) {
+          alert('This zone is for sequences only. Add a sequence from the zone Edit menu instead.');
+          return;
+        }
+      }
+    } catch (e) {
+      console.warn('Could not verify zone content kind:', e);
+    }
+    
     // Load all presets
     try {
       const response = await fetch('/presets', {
@@ -1327,11 +1538,10 @@ document.addEventListener('DOMContentLoaded', () => {
         throw new Error('Failed to load zone');
       }
       const tabData = await tabResponse.json();
-      const kind =
+      if (
-        typeof window.normalizeZoneContentKind === 'function'
+        typeof window.zoneAllowsPresets === 'function' &&
-          ? window.normalizeZoneContentKind(tabData)
+        !window.zoneAllowsPresets(tabData, zoneId)
-          : null;
+      ) {
-      if (kind === 'sequences') {
         alert('This zone is for sequences only. Add a sequence from the zone Edit menu instead.');
         return;
       }
@@ -1697,14 +1907,6 @@ document.addEventListener('DOMContentLoaded', () => {
   clearForm();
 });
 
-const coercePresetInt = (v, def = 0) => {
-  if (typeof v === 'number' && Number.isFinite(v)) {
-    return v;
-  }
-  const t = parseInt(String(v), 10);
-  return Number.isFinite(t) ? t : def;
-};
-
 /** Device field ``a`` / API ``auto``; missing → auto-run (matches server build_preset_dict). */
 const coercePresetAuto = (preset) => {
   if (!preset || typeof preset !== 'object') {
@@ -1826,7 +2028,7 @@ const sendPresetViaEspNow = async (
           n3: coercePresetInt(preset.n3),
           n4: coercePresetInt(preset.n4),
           n5: coercePresetInt(preset.n5),
-          n6: coercePresetInt(preset.n6),
+          n6: presetWireN6(preset),
           manual_beat_n: coerceManualBeatN(preset),
         },
       },
@@ -1929,7 +2131,7 @@ try {
   // window may not exist in some environments; ignore.
 }
 
-// Store selected preset(s) per zone (multi-select; merge send order = click order, last wins on device).
+// Store selected preset per zone (single-select; one tile active, one driver push per click).
 const zoneSelectedPresetIds = {};
 const zonePresetSelectionOrder = {};
 
@@ -1956,19 +2158,21 @@ function getOrderedZonePresetSelection(zoneId) {
   return (zonePresetSelectionOrder[z] || []).filter((id) => set.has(String(id)));
 }
 
-async function sendMergedZonePresetSelection(zoneId, tabData, allPresets) {
+/** Preset id that should show the tile outline (last click in selection order). */
-  const ids = getOrderedZonePresetSelection(zoneId);
+function getLastZonePresetSelectionId(zoneId) {
-  if (!ids.length) return;
+  const order = getOrderedZonePresetSelection(zoneId);
-  for (let i = 0; i < ids.length; i += 1) {
+  return order.length ? String(order[order.length - 1]) : null;
-    const pid = ids[i];
+}
-    const preset = allPresets[pid];
+
-    if (!preset) continue;
+async function sendZonePresetSelection(zoneId, tabData, presetId, preset, allPresets) {
+  const pid = String(presetId);
+  const body = (allPresets && allPresets[pid]) || preset;
+  if (!body) return;
   const names =
     window.zonesManager && typeof window.zonesManager.resolveDeviceNamesForZonePreset === 'function'
       ? await window.zonesManager.resolveDeviceNamesForZonePreset(tabData, pid)
       : [];
-    await sendPresetViaEspNow(pid, preset, names, false, false, '2');
+  await sendPresetViaEspNow(pid, body, names, false, false, '2');
-  }
 }
 
 // Store selected preset per zone
@@ -2053,6 +2257,12 @@ const savePresetGrid = async (zoneId, presetGrid) => {
       throw new Error('Failed to load zone');
     }
     const tabData = await tabResponse.json();
+    if (
+      typeof window.zoneAllowsPresets === 'function' &&
+      !window.zoneAllowsPresets(tabData, zoneId)
+    ) {
+      throw new Error('This zone is for sequences only.');
+    }
     
     // Store as 2D grid
     tabData.presets = presetGrid;
@@ -2147,9 +2357,11 @@ const renderTabPresets = async (zoneId, options = {}) => {
     const tabData = await tabResponse.json();
     const groupsMapStrip = groupsStripRes.ok ? await groupsStripRes.json() : {};
     const ck =
-        typeof window.normalizeZoneContentKind === 'function'
+        typeof window.effectiveZoneContentKind === 'function'
+            ? window.effectiveZoneContentKind(tabData)
+            : typeof window.normalizeZoneContentKind === 'function'
               ? window.normalizeZoneContentKind(tabData)
-            : null;
+              : 'presets';
 
     // Get presets - support both 2D grid and flat array (for backward compatibility)
     let presetGrid = tabData.presets;
@@ -2265,7 +2477,9 @@ const renderTabPresets = async (zoneId, options = {}) => {
         const preset = allPresets[presetId];
         if (preset) {
           ensureZonePresetSelection(zoneId);
-          const isSelected = zoneSelectedPresetIds[String(zoneId)].has(String(presetId));
+          const lastSelectedId = getLastZonePresetSelectionId(zoneId);
+          const isSelected =
+            lastSelectedId !== null && lastSelectedId === String(presetId);
           const displayPreset = {
             ...preset,
             colors: resolveColorsWithPaletteRefs(preset.colors, preset.palette_refs, paletteColors),
@@ -2285,7 +2499,11 @@ const renderTabPresets = async (zoneId, options = {}) => {
       });
     }
 
-    if (typeof window.appendZoneSequenceTiles === 'function' && ck !== 'presets') {
+    if (
+      typeof window.appendZoneSequenceTiles === 'function' &&
+      (typeof window.zoneAllowsSequences !== 'function' ||
+        window.zoneAllowsSequences(tabData, zoneId))
+    ) {
       await window.appendZoneSequenceTiles(zoneId, tabData, allPresets, paletteColors, presetsList);
     }
   } catch (error) {
@@ -2311,7 +2529,9 @@ const createPresetButton = (presetId, preset, zoneId, isSelected, tabData, group
   }
 
   const colors = Array.isArray(preset.colors) ? preset.colors.filter((c) => c) : [];
-  const isRainbow = (preset.pattern || '').toLowerCase() === 'rainbow';
+  const pat = (preset.pattern || '').toLowerCase();
+  const mode = presetWireN6(preset);
+  const isRainbow = pat === 'rainbow' || (pat === 'colour_cycle' && mode === 1);
   const barColors = isRainbow
     ? ['#FF0000', '#FF7F00', '#FFFF00', '#00FF00', '#0000FF', '#4B0082', '#8F00FF']
     : colors;
@@ -2389,34 +2609,32 @@ const createPresetButton = (presetId, preset, zoneId, isSelected, tabData, group
     ensureZonePresetSelection(zoneId);
     const z = String(zoneId);
     const set = zoneSelectedPresetIds[z];
-    const order = zonePresetSelectionOrder[z];
     const idStr = String(presetId);
-    if (set.has(idStr)) {
+    const wasSelected = set.has(idStr);
-      set.delete(idStr);
+    set.clear();
-      zonePresetSelectionOrder[z] = order.filter((x) => String(x) !== idStr);
+    zonePresetSelectionOrder[z] = [];
-    } else {
+    if (!wasSelected) {
       set.add(idStr);
-      order.push(idStr);
+      zonePresetSelectionOrder[z] = [idStr];
     }
+    const outlinePresetId = getLastZonePresetSelectionId(zoneId);
     if (presetsListEl) {
       presetsListEl.querySelectorAll('.preset-tile-row:not(.sequence-tile-row)').forEach((rw) => {
         const pid = rw.dataset.presetId;
         const btnEl = rw.querySelector('.preset-tile-main');
         if (!btnEl || !pid) return;
-        if (set.has(String(pid))) btnEl.classList.add('active');
+        if (outlinePresetId && String(pid) === outlinePresetId) btnEl.classList.add('active');
         else btnEl.classList.remove('active');
       });
     }
-    const orderList = getOrderedZonePresetSelection(zoneId);
+    if (!wasSelected) {
-    if (orderList.length) {
+      selectedPresets[zoneId] = idStr;
-      const lastPid = orderList[orderList.length - 1];
+      selectedPresetPayloads[zoneId] = (allPresets && allPresets[idStr]) || preset;
-      selectedPresets[zoneId] = lastPid;
+      void sendZonePresetSelection(zoneId, tabData, idStr, preset, allPresets);
-      selectedPresetPayloads[zoneId] = (allPresets && allPresets[lastPid]) || preset;
     } else {
       delete selectedPresets[zoneId];
       delete selectedPresetPayloads[zoneId];
     }
-    void sendMergedZonePresetSelection(zoneId, tabData, allPresets);
   });
 
   if (canDrag) {
@@ -2526,6 +2744,13 @@ const removePresetFromTab = async (zoneId, presetId) => {
       throw new Error('Failed to load zone');
     }
     const tabData = await tabResponse.json();
+    if (
+      typeof window.zoneAllowsPresets === 'function' &&
+      !window.zoneAllowsPresets(tabData, zoneId)
+    ) {
+      alert('This zone is for sequences only.');
+      return;
+    }
     
     // Normalize to flat array
     let flat = [];

src/static/profiles.js

@@ -6,6 +6,7 @@ document.addEventListener("DOMContentLoaded", () => {
   const newProfileInput = document.getElementById("new-profile-name");
   const newProfileSeedDjInput = document.getElementById("new-profile-seed-dj");
   const createProfileButton = document.getElementById("create-profile-btn");
+  const importProfileButton = document.getElementById("import-profile-btn");
 
   if (!profilesButton || !profilesModal || !profilesList) {
     return;
@@ -101,6 +102,26 @@ document.addEventListener("DOMContentLoaded", () => {
         }
       });
 
+      const exportButton = document.createElement("button");
+      exportButton.className = "btn btn-secondary btn-small";
+      exportButton.textContent = "Export";
+      exportButton.addEventListener("click", async () => {
+        try {
+          const response = await fetch(`/profiles/${profileId}/export`, {
+            headers: { Accept: "application/json" },
+          });
+          if (!response.ok) {
+            throw new Error("Export failed");
+          }
+          const bundle = await response.json();
+          const safeName = ((profile && profile.name) || profileId).replace(/[^\w.-]+/g, "_");
+          window.downloadJsonFile(`profile-${safeName}.json`, bundle);
+        } catch (error) {
+          console.error("Export profile failed:", error);
+          alert("Failed to export profile.");
+        }
+      });
+
       const cloneButton = document.createElement("button");
       cloneButton.className = "btn btn-secondary btn-small";
       cloneButton.textContent = "Clone";
@@ -177,6 +198,7 @@ document.addEventListener("DOMContentLoaded", () => {
       row.appendChild(label);
       row.appendChild(applyButton);
       if (editMode) {
+        row.appendChild(exportButton);
         row.appendChild(cloneButton);
         row.appendChild(deleteButton);
       }
@@ -276,6 +298,60 @@ document.addEventListener("DOMContentLoaded", () => {
   if (createProfileButton) {
     createProfileButton.addEventListener("click", createProfile);
   }
+
+  const importProfile = async () => {
+    if (!isEditModeActive()) {
+      return;
+    }
+    const text = await window.pickJsonFile();
+    if (!text) {
+      return;
+    }
+    const bundle = window.parseJsonFileText(text);
+    if (!bundle || typeof bundle !== "object") {
+      alert("Invalid JSON file.");
+      return;
+    }
+    const defaultName =
+      (bundle.profile && bundle.profile.name) || "Imported profile";
+    const name = prompt("Profile name for import:", defaultName);
+    if (name === null) {
+      return;
+    }
+    const trimmed = String(name).trim();
+    if (!trimmed) {
+      alert("Profile name cannot be empty.");
+      return;
+    }
+    try {
+      const response = await fetch("/profiles/import", {
+        method: "POST",
+        headers: { "Content-Type": "application/json", Accept: "application/json" },
+        body: JSON.stringify({ bundle, name: trimmed, apply: true }),
+      });
+      if (!response.ok) {
+        const err = await response.json().catch(() => ({}));
+        throw new Error(err.error || "Import failed");
+      }
+      const data = await response.json();
+      const newProfileId = data.id || Object.keys(data).find((k) => k !== "id");
+      if (newProfileId) {
+        await fetch(`/profiles/${newProfileId}/apply`, {
+          method: "POST",
+          headers: { Accept: "application/json" },
+        });
+      }
+      await loadProfiles();
+      await refreshTabsForActiveProfile();
+    } catch (error) {
+      console.error("Import profile failed:", error);
+      alert(error.message || "Failed to import profile.");
+    }
+  };
+
+  if (importProfileButton) {
+    importProfileButton.addEventListener("click", importProfile);
+  }
   if (newProfileInput) {
     newProfileInput.addEventListener("keypress", (event) => {
       if (event.key === "Enter") {

src/static/sequences.js

@@ -1,14 +1,98 @@
 // Sequences: lanes (parallel preset chains); advance is always by audio beats or simulated BPM.
-// Debug: in the browser console run setSequenceDebug(true) — toggling logs 1 (on) or 0 (off).
+// Debug: in the browser console run setSequenceDebug(true) — session only, not persisted.
 
-const SEQ_DEBUG_STORAGE_KEY = 'led-controller-sequence-debug';
+/** @type {'beat'|'downbeat'} */
+let sequenceSwitchWaitFor = 'beat';
+
+let sequenceDebugEnabled = false;
+let sequenceSwitchSaveInFlight = false;
+
+async function loadSequenceSwitchWaitForFromServer() {
+  try {
+    const res = await fetch('/settings', {
+      cache: 'no-store',
+      headers: { Accept: 'application/json' },
+    });
+    if (!res.ok) return;
+    const data = await res.json();
+    const raw = data && data.sequence_switch_wait;
+    if (raw === 'downbeat' || raw === 'beat') {
+      sequenceSwitchWaitFor = raw;
+    } else if (raw === 'phrase') {
+      sequenceSwitchWaitFor = 'beat';
+    }
+  } catch {
+    /* keep default */
+  }
+}
+
+async function persistSequenceSwitchWaitFor() {
+  sequenceSwitchSaveInFlight = true;
+  try {
+    const res = await fetch('/settings', {
+      method: 'PUT',
+      headers: { 'Content-Type': 'application/json', Accept: 'application/json' },
+      body: JSON.stringify({ sequence_switch_wait: sequenceSwitchWaitFor }),
+    });
+    if (!res.ok) {
+      console.warn('[sequence] could not save switch wait to server', res.status);
+    }
+  } catch (e) {
+    console.warn('[sequence] could not save switch wait to server', e);
+  } finally {
+    sequenceSwitchSaveInFlight = false;
+  }
+}
+
+function getSequenceSwitchWaitFor() {
+  return sequenceSwitchWaitFor === 'downbeat' ? 'downbeat' : 'beat';
+}
+
+async function setSequenceSwitchWaitFor(waitFor) {
+  sequenceSwitchWaitFor = waitFor === 'downbeat' ? 'downbeat' : 'beat';
+  updateSequenceSwitchToggleUI();
+  await persistSequenceSwitchWaitFor();
+}
+
+function updateSequenceSwitchToggleUI() {
+  const mode = getSequenceSwitchWaitFor();
+  const ariaLabels = {
+    beat: 'Switch sequence on beat',
+    downbeat: 'Switch sequence on downbeat',
+  };
+  document.querySelectorAll('.seq-switch-toggle').forEach((btn) => {
+    btn.setAttribute('aria-pressed', mode === 'beat' ? 'false' : 'true');
+    btn.setAttribute('aria-label', ariaLabels[mode] || ariaLabels.beat);
+    btn.classList.toggle('seq-switch-toggle--downbeat', mode === 'downbeat');
+  });
+  document.querySelectorAll('.seq-switch-toggle-wrap').forEach((wrap) => {
+    wrap.classList.toggle('nav-slide-toggle-wrap--downbeat', mode === 'downbeat');
+  });
+}
+
+async function initSequenceSwitchToggle() {
+  await loadSequenceSwitchWaitForFromServer();
+  updateSequenceSwitchToggleUI();
+  document.querySelectorAll('.seq-switch-toggle').forEach((btn) => {
+    btn.addEventListener('click', () => {
+      void setSequenceSwitchWaitFor(getSequenceSwitchWaitFor() === 'beat' ? 'downbeat' : 'beat');
+    });
+  });
+}
+
+/** Sync toggle when settings changed elsewhere (e.g. another tab via audio status poll). */
+function applySequenceSwitchWaitFromServer(raw) {
+  if (sequenceSwitchSaveInFlight) return;
+  let mode = 'beat';
+  if (raw === 'downbeat') mode = 'downbeat';
+  else if (raw !== 'beat' && raw !== 'phrase') return;
+  if (mode === getSequenceSwitchWaitFor()) return;
+  sequenceSwitchWaitFor = mode;
+  updateSequenceSwitchToggleUI();
+}
 
 function seqDebugEnabled() {
-  try {
+  return sequenceDebugEnabled;
-    return localStorage.getItem(SEQ_DEBUG_STORAGE_KEY) === '1';
-  } catch {
-    return false;
-  }
 }
 
 /** @type {ReturnType<typeof setInterval> | null} */
@@ -132,6 +216,12 @@ function logSequenceSelectionPresets(sequenceId, sequenceDoc, presetsMap) {
   });
 }
 
+function zoneGroupIdsFromDoc(zoneDoc) {
+  return Array.isArray(zoneDoc && zoneDoc.group_ids)
+    ? zoneDoc.group_ids.map((x) => String(x).trim()).filter(Boolean)
+    : [];
+}
+
 function groupIdsForLaneStep(sequenceDoc, step, laneIndex, numLanes) {
   const lgs = Array.isArray(sequenceDoc.lanes_group_ids) ? sequenceDoc.lanes_group_ids : [];
   if (laneIndex < lgs.length) {
@@ -155,7 +245,6 @@ function groupIdsForLaneStep(sequenceDoc, step, laneIndex, numLanes) {
 
 function buildLaneGroupIdsForEditor(doc, laneIndex, numLanes) {
   const raw = Array.isArray(doc && doc.lanes_group_ids) ? doc.lanes_group_ids : [];
-  const shared = Array.isArray(doc && doc.group_ids) ? doc.group_ids.map(String) : [];
   if (laneIndex < raw.length) {
     const row = raw[laneIndex];
     if (Array.isArray(row)) {
@@ -165,17 +254,10 @@ function buildLaneGroupIdsForEditor(doc, laneIndex, numLanes) {
   if (numLanes > 1 && laneIndex >= raw.length) {
     return [];
   }
-  if (numLanes === 1) {
+  return [];
-    const lanes = normalizeSequenceLanes(doc);
-    const first = lanes[0] && lanes[0][0];
-    const sg =
-      first && Array.isArray(first.group_ids) ? first.group_ids.map(String).filter(Boolean) : [];
-    return sg.length ? sg : shared.slice();
-  }
-  return shared.slice();
 }
 
-function renderLaneGroupCheckboxes(groupsMap, selectedIds) {
+function renderLaneGroupCheckboxes(groupsMap, selectedIds, zoneGroupIds) {
   const wrap = document.createElement('div');
   wrap.className = 'sequence-lane-groups-wrap';
   wrap.style.cssText = 'margin-bottom:0.6rem;';
@@ -183,15 +265,17 @@ function renderLaneGroupCheckboxes(groupsMap, selectedIds) {
   hint.className = 'muted-text';
   hint.style.fontSize = '0.85em';
   hint.style.marginBottom = '0.35rem';
-  hint.textContent = 'Groups for this lane (none = whole zone)';
+  hint.textContent = 'Only checked groups are used on this lane';
   wrap.appendChild(hint);
   const row = document.createElement('div');
   row.className = 'sequence-lane-groups';
   row.style.cssText = 'display:flex;flex-wrap:wrap;gap:0.5rem;align-items:center;';
   const sel = new Set((selectedIds || []).map((x) => String(x)));
-  Object.keys(groupsMap)
+  const zg = Array.isArray(zoneGroupIds) ? zoneGroupIds.map(String).filter(Boolean) : [];
-    .sort((a, b) => a.localeCompare(b))
+  const gidsToShow = zg.length
-    .forEach((gid) => {
+    ? zg
+    : Object.keys(groupsMap).sort((a, b) => a.localeCompare(b));
+  gidsToShow.forEach((gid) => {
       const g = groupsMap[gid];
       const gn = g && g.name ? String(g.name) : gid;
       const id = `seq-lg-${gid}-${Math.random().toString(36).slice(2)}`;
@@ -249,13 +333,6 @@ function presetsSectionElForZone(zoneId) {
 /** Match preset tiles: prefer DOM device list, then zone JSON (same as parseTabDeviceNames + computeZoneTargets). */
 async function resolveSequenceSendDeviceNames(zoneId, zoneDoc, groupIds) {
   const gids = Array.isArray(groupIds) ? groupIds.map((x) => String(x).trim()).filter((x) => x.length > 0) : [];
-  if (!gids.length) {
-    const section = presetsSectionElForZone(zoneId);
-    if (typeof window.parseTabDeviceNames === 'function' && section) {
-      const fromDom = window.parseTabDeviceNames(section);
-      if (Array.isArray(fromDom) && fromDom.length) return fromDom;
-    }
-  }
   if (window.zonesManager && typeof window.zonesManager.resolveSequenceStepDeviceNames === 'function' && zoneDoc) {
     return await window.zonesManager.resolveSequenceStepDeviceNames(zoneDoc, gids);
   }
@@ -323,33 +400,12 @@ function createSequenceTileRow(sequenceId, sequenceDoc, zoneId, zoneDoc, allPres
   button.className = 'pattern-button preset-tile-main sequence-tile-main';
   button.title = sequenceDoc.name || `Sequence ${sequenceId}`;
 
-  const badge = document.createElement('span');
-  badge.textContent = 'SEQ';
-  badge.className = 'sequence-tile-badge';
-  badge.style.cssText =
-    'position:absolute;left:4px;top:4px;font-size:10px;font-weight:700;color:#fff;background:rgba(0,100,180,0.9);padding:2px 5px;border-radius:3px;pointer-events:none;z-index:2;';
-  button.style.position = 'relative';
-  button.appendChild(badge);
-
   const label = document.createElement('span');
   label.textContent = sequenceDoc.name || sequenceId;
   label.style.fontWeight = 'bold';
   label.className = 'pattern-button-label';
   button.appendChild(label);
 
-  const sub = document.createElement('span');
-  sub.className = 'muted-text';
-  sub.style.cssText = 'display:block;font-size:0.8em;margin-top:0.2rem;';
-  const lanes = normalizeSequenceLanes(sequenceDoc);
-  const nLanes = lanes.filter((l) => l.length > 0).length || 1;
-  const nSteps = lanes.reduce((a, l) => a + l.length, 0);
-  const simRaw = sequenceDoc.simulated_bpm;
-  let sim = parseInt(String(simRaw != null ? simRaw : 120), 10);
-  if (!Number.isFinite(sim)) sim = 120;
-  sim = Math.min(300, Math.max(30, sim));
-  sub.textContent = `${nLanes} lane${nLanes === 1 ? '' : 's'} · ${nSteps} step${nSteps === 1 ? '' : 's'} · beats · ${sim} BPM sim`;
-  button.appendChild(sub);
-
   button.addEventListener('click', () => {
     const strip = document.getElementById('presets-list-zone');
     const clearActiveStrip = () => {
@@ -454,11 +510,10 @@ async function addSequenceToTab(sequenceId, zoneId) {
     const tabResponse = await fetch(`/zones/${zoneId}`, { headers: { Accept: 'application/json' } });
     if (!tabResponse.ok) throw new Error('Failed to load zone');
     const tabData = await tabResponse.json();
-    const kind =
+    if (
-      typeof window.normalizeZoneContentKind === 'function'
+      typeof window.zoneAllowsSequences === 'function' &&
-        ? window.normalizeZoneContentKind(tabData)
+      !window.zoneAllowsSequences(tabData, zoneId)
-        : null;
+    ) {
-    if (kind === 'presets') {
       alert('This zone is for presets only. Add presets from the zone Edit menu instead.');
       return;
     }
@@ -524,11 +579,10 @@ async function refreshEditTabSequencesUi(zoneId) {
     const zoneRes = await fetch(`/zones/${zoneId}`, { headers: { Accept: 'application/json' } });
     if (!zoneRes.ok) throw new Error('zone');
     const zone = await zoneRes.json();
-    const kind =
+    if (
-      typeof window.normalizeZoneContentKind === 'function'
+      typeof window.zoneAllowsSequences === 'function' &&
-        ? window.normalizeZoneContentKind(zone)
+      !window.zoneAllowsSequences(zone, zoneId)
-        : null;
+    ) {
-    if (kind === 'presets') {
       currentEl.innerHTML =
         '<span class="muted-text">This zone is for presets only. Sequences are hidden.</span>';
       addEl.innerHTML = '<span class="muted-text">—</span>';
@@ -783,7 +837,7 @@ function renderSequenceStepRow(presetsMap, step) {
   return row;
 }
 
-function renderSequenceLane(laneIndex, laneSteps, laneGroupIds, presetsMap, groupsMap) {
+function renderSequenceLane(laneIndex, laneSteps, laneGroupIds, presetsMap, groupsMap, zoneGroupIds) {
   const wrap = document.createElement('div');
   wrap.className = 'sequence-lane';
   wrap.dataset.laneIndex = String(laneIndex);
@@ -822,7 +876,7 @@ function renderSequenceLane(laneIndex, laneSteps, laneGroupIds, presetsMap, grou
   head.appendChild(headBtns);
   wrap.appendChild(head);
 
-  wrap.appendChild(renderLaneGroupCheckboxes(groupsMap, laneGroupIds));
+  wrap.appendChild(renderLaneGroupCheckboxes(groupsMap, laneGroupIds, zoneGroupIds));
 
   const stepsHost = document.createElement('div');
   stepsHost.className = 'sequence-lane-steps';
@@ -895,6 +949,24 @@ async function openSequenceEditor(sequenceId, existing) {
   const presetsMap = presetsRes.ok ? await presetsRes.json() : {};
   const groupsMap = await fetchGroupsMapSeq();
 
+  let zoneDoc = {};
+  const zoneIdForEditor = resolveZoneIdForPresetStripRefresh();
+  if (zoneIdForEditor) {
+    try {
+      const zr = await fetch(`/zones/${encodeURIComponent(zoneIdForEditor)}`, {
+        headers: { Accept: 'application/json' },
+        credentials: 'same-origin',
+      });
+      if (zr.ok) {
+        const zj = await zr.json();
+        if (zj && typeof zj === 'object' && !zj.error) zoneDoc = zj;
+      }
+    } catch (_) {
+      /* no zone context */
+    }
+  }
+  const zoneGroupIds = zoneGroupIdsFromDoc(zoneDoc);
+
   let doc = existing;
   if (sequenceEditorId) {
     try {
@@ -928,11 +1000,11 @@ async function openSequenceEditor(sequenceId, existing) {
   lanesHost.innerHTML = '';
   if (!lanes.some((l) => l.length > 0)) {
     const lg0 = buildLaneGroupIdsForEditor(doc, 0, 1);
-    lanesHost.appendChild(renderSequenceLane(0, [], lg0, presetsMap, groupsMap));
+    lanesHost.appendChild(renderSequenceLane(0, [], lg0, presetsMap, groupsMap, zoneGroupIds));
   } else {
     lanes.forEach((laneSteps, i) => {
       const lg = buildLaneGroupIdsForEditor(doc, i, lanes.length);
-      lanesHost.appendChild(renderSequenceLane(i, laneSteps, lg, presetsMap, groupsMap));
+      lanesHost.appendChild(renderSequenceLane(i, laneSteps, lg, presetsMap, groupsMap, zoneGroupIds));
     });
   }
   refreshSequenceEditorLaneTitles();
@@ -1092,26 +1164,41 @@ async function loadSequencesModalList() {
     const nSteps = ln.reduce((a, l) => a + l.length, 0);
     const nLanes = ln.filter((l) => l.length > 0).length || 1;
     title.textContent = `${doc.name || id} — ${nLanes} lane(s), ${nSteps} step(s)`;
+    const exportBtn = document.createElement('button');
+    exportBtn.type = 'button';
+    exportBtn.className = 'btn btn-secondary btn-small';
+    exportBtn.textContent = 'Export';
+    exportBtn.addEventListener('click', async () => {
+      try {
+        const response = await fetch(`/sequences/${id}/export`, {
+          headers: { Accept: 'application/json' },
+        });
+        if (!response.ok) throw new Error('Export failed');
+        const bundle = await response.json();
+        const safeName = String(doc.name || id).replace(/[^\w.-]+/g, '_');
+        window.downloadJsonFile(`sequence-${safeName}.json`, bundle);
+      } catch (e) {
+        console.error(e);
+        alert('Failed to export sequence.');
+      }
+    });
     const edit = document.createElement('button');
     edit.type = 'button';
     edit.className = 'btn btn-secondary btn-small';
     edit.textContent = 'Edit';
     edit.addEventListener('click', () => openSequenceEditor(id, doc));
     row.appendChild(title);
+    row.appendChild(exportBtn);
     row.appendChild(edit);
     listEl.appendChild(row);
   });
 }
 
+window.applySequenceSwitchWaitFromServer = applySequenceSwitchWaitFromServer;
 window.stopZoneSequencePlayback = stopZoneSequencePlayback;
 /** @param {boolean} on */
 window.setSequenceDebug = function setSequenceDebug(on) {
-  try {
+  sequenceDebugEnabled = !!on;
-    if (on) localStorage.setItem(SEQ_DEBUG_STORAGE_KEY, '1');
-    else localStorage.removeItem(SEQ_DEBUG_STORAGE_KEY);
-  } catch (e) {
-    console.warn('[sequence] could not persist debug flag', e);
-  }
   console.log(seqDebugEnabled() ? 1 : 0);
 };
 window.appendZoneSequenceTiles = appendZoneSequenceTiles;
@@ -1120,6 +1207,7 @@ window.addSequenceToTab = addSequenceToTab;
 window.removeSequenceFromTab = removeSequenceFromTab;
 
 document.addEventListener('DOMContentLoaded', () => {
+  void initSequenceSwitchToggle();
   const btn = document.getElementById('sequences-btn');
   const modal = document.getElementById('sequences-modal');
   const closeBtn = document.getElementById('sequences-close-btn');
@@ -1139,6 +1227,33 @@ document.addEventListener('DOMContentLoaded', () => {
       openSequenceEditor(null, null);
     });
   }
+  const importSeqBtn = document.getElementById('import-sequence-btn');
+  if (importSeqBtn) {
+    importSeqBtn.addEventListener('click', async () => {
+      const text = await window.pickJsonFile();
+      if (!text) return;
+      const bundle = window.parseJsonFileText(text);
+      if (!bundle || bundle.kind !== 'sequence') {
+        alert('Invalid sequence bundle file.');
+        return;
+      }
+      try {
+        const response = await fetch('/sequences/import', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json', Accept: 'application/json' },
+          body: JSON.stringify({ bundle }),
+        });
+        if (!response.ok) {
+          const err = await response.json().catch(() => ({}));
+          throw new Error(err.error || 'Import failed');
+        }
+        await loadSequencesModalList();
+      } catch (e) {
+        console.error(e);
+        alert(e.message || 'Failed to import sequence.');
+      }
+    });
+  }
   const openPresetsFromSeq = document.getElementById('sequences-open-presets-btn');
   if (openPresetsFromSeq) {
     openPresetsFromSeq.addEventListener('click', () => {

src/static/style.css

@@ -106,7 +106,7 @@ header h1 {
     font-weight: 600;
 }
 
-/* Second header row: BPM, brightness, desktop buttons / mobile menu */
+/* Top header row: BPM, brightness, desktop buttons, mobile menu (above zone tabs) */
 .header-end {
     display: flex;
     align-items: center;
@@ -199,20 +199,43 @@ header h1 {
 
 .audio-top-indicator {
     display: none;
-    flex-direction: column;
+    align-items: center;
-    align-items: stretch;
+    gap: 0.35rem;
-    gap: 0.15rem;
-    padding: 0.25rem 0.55rem;
-    border: 1px solid #4a4a4a;
-    border-radius: 6px;
-    background-color: #1a1a1a;
     min-width: 9rem;
 }
 
-.audio-top-indicator-main {
+.audio-top-indicator.audio-running {
+    display: inline-flex;
+}
+
+.audio-top-indicator .audio-top-beat-sync {
+    flex: 1;
+    min-width: 0;
+}
+
+.audio-top-beat-sync {
     display: inline-flex;
     align-items: center;
     gap: 0.4rem;
+    width: 100%;
+    min-height: 2.25rem;
+    padding: 0.3rem 0.55rem;
+    border: 1px solid #4a4a4a;
+    border-radius: 6px;
+    background-color: #1a1a1a;
+    cursor: pointer;
+    font-family: inherit;
+    text-align: left;
+}
+
+.audio-top-beat-sync:disabled {
+    cursor: default;
+    opacity: 0.85;
+}
+
+.audio-top-beat-sync:not(:disabled):hover {
+    border-color: #6a6a6a;
+    background-color: #2a2a2a;
 }
 
 .audio-top-indicator-extra {
@@ -226,10 +249,6 @@ header h1 {
     text-overflow: ellipsis;
 }
 
-.audio-top-indicator.audio-running {
-    display: inline-flex;
-}
-
 .audio-top-indicator-label {
     font-size: 0.72rem;
     color: #bdbdbd;
@@ -245,16 +264,46 @@ header h1 {
 }
 
 .audio-top-beat-readout {
-    font-size: 0.62rem;
+    font-size: 0.75rem;
     color: #b0bec5;
     line-height: 1.25;
-    max-width: 12rem;
     white-space: nowrap;
     overflow: hidden;
     text-overflow: ellipsis;
     flex: 1;
-    min-width: 0;
+    min-width: 2rem;
-    text-align: left;
+    text-align: right;
+}
+
+.audio-top-beat-readout:empty {
+    display: none;
+}
+
+.audio-top-beat-readout:not(:empty)::before {
+    content: "·";
+    margin-right: 0.35rem;
+    color: #757575;
+}
+
+.audio-top-bar-phase {
+    font-size: 0.7rem;
+    color: #90a4ae;
+    line-height: 1.25;
+    white-space: nowrap;
+}
+
+.audio-top-bar-phase:empty {
+    display: none;
+}
+
+.audio-top-bar-phase:not(:empty)::before {
+    content: "·";
+    margin-right: 0.35rem;
+    color: #757575;
+}
+
+.audio-top-bar-phase.is-downbeat {
+    color: #ffab91;
 }
 
 .audio-top-indicator-subvalue {
@@ -264,16 +313,15 @@ header h1 {
     text-align: right;
 }
 
-.audio-top-indicator.flash {
+.audio-top-beat-sync.flash {
     background-color: #ff5252;
     border-color: #ff8a80;
 }
 
-.audio-top-indicator.flash .audio-top-indicator-value,
+.audio-top-beat-sync.flash .audio-top-indicator-value,
-.audio-top-indicator.flash .audio-top-indicator-label,
+.audio-top-beat-sync.flash .audio-top-indicator-label,
-.audio-top-indicator.flash .audio-top-indicator-subvalue,
+.audio-top-beat-sync.flash .audio-top-beat-readout,
-.audio-top-indicator.flash .audio-top-indicator-extra,
+.audio-top-beat-sync.flash .audio-top-beat-readout::before {
-.audio-top-indicator.flash .audio-top-beat-readout {
     color: #fff;
 }
 
@@ -333,7 +381,7 @@ body.preset-ui-run .edit-mode-only {
 
 .zones-container {
     background-color: transparent;
-    padding: 0.35rem 0 0;
+    padding: 0;
     flex: 0 0 auto;
     width: 100%;
     min-width: 0;
@@ -598,6 +646,39 @@ body.preset-ui-run .edit-mode-only {
     font-weight: 500;
 }
 
+.preset-mode-field {
+    margin-top: 0.75rem;
+    margin-bottom: 0.25rem;
+}
+
+.preset-mode-field label {
+    display: block;
+    font-weight: 500;
+    margin-bottom: 0.35rem;
+}
+
+.preset-mode-input {
+    display: block;
+    width: 100%;
+    max-width: 100%;
+    box-sizing: border-box;
+    padding: 0.5rem 0.6rem;
+    background-color: #3a3a3a;
+    color: #fff;
+    border: 1px solid #4a4a4a;
+    border-radius: 4px;
+    font-size: 1rem;
+}
+
+.preset-mode-input:focus {
+    outline: none;
+    border-color: #6a9fff;
+}
+
+#preset-editor-modal .preset-mode-field {
+    grid-column: 1 / -1;
+}
+
 .n-input {
     flex: 0 0 var(--n-input-width, 5ch);
     width: var(--n-input-width, 5ch);
@@ -830,12 +911,41 @@ body.preset-ui-run .edit-mode-only {
     min-width: 5rem;
 }
 
+#audio-modal .audio-settings-section {
+    margin-top: 1rem;
+}
+
+#audio-modal .audio-settings-section .audio-modal-beat-readout {
+    display: block;
+    width: 100%;
+    max-width: none;
+}
+
 .audio-modal-beat-readout {
     flex: 1;
     min-width: 10rem;
+    min-height: 2.25rem;
     font-size: 0.85rem;
     line-height: 1.35;
-    text-align: left;
+    text-align: center;
+    border: 1px solid #4a4a4a;
+    border-radius: 6px;
+    background-color: #252525;
+    padding: 0.35rem 0.65rem;
+    cursor: pointer;
+    font-family: inherit;
+    color: #b0bec5;
+}
+
+.audio-modal-beat-readout:disabled {
+    cursor: default;
+    opacity: 0.55;
+}
+
+.audio-modal-beat-readout:not(:disabled):hover {
+    border-color: #6a6a6a;
+    background-color: #333;
+    color: #e0e0e0;
 }
 
 .audio-hit-type-readout {
@@ -970,13 +1080,98 @@ body.preset-ui-run .edit-mode-only {
     white-space: normal;
 }
 
-.ui-mode-toggle--edit {
+.nav-slide-toggle-wrap {
-    background-color: #4a3f8f;
+    display: inline-flex;
-    border: 1px solid #7b6fd6;
+    align-items: center;
+    gap: 0.4rem;
+    flex-shrink: 0;
 }
 
-.ui-mode-toggle--edit:hover {
+.nav-slide-toggle-side-label {
+    font-size: 0.82rem;
+    color: #888;
+    user-select: none;
+    line-height: 1;
+}
+
+.nav-slide-toggle-wrap:not(.nav-slide-toggle-wrap--downbeat) .nav-slide-toggle-side-label--beat,
+.nav-slide-toggle-wrap--downbeat .nav-slide-toggle-side-label--downbeat {
+    color: #e8e8e8;
+    font-weight: 500;
+}
+
+.nav-slide-toggle-switch {
+    position: relative;
+    width: 2.75rem;
+    height: 1.4rem;
+    padding: 0;
+    margin: 0;
+    color: inherit;
+    font: inherit;
+    appearance: none;
+    border: 1px solid #4a4a4a;
+    border-radius: 999px;
+    background-color: #2a2a2a;
+    cursor: pointer;
+    flex-shrink: 0;
+}
+
+.nav-slide-toggle-switch:hover {
+    border-color: #666;
+}
+
+.nav-slide-toggle-switch:focus-visible {
+    outline: 2px solid #7b6fd6;
+    outline-offset: 2px;
+}
+
+.nav-slide-toggle-track {
+    display: block;
+    width: 100%;
+    height: 100%;
+    border-radius: inherit;
+}
+
+.nav-slide-toggle-thumb {
+    position: absolute;
+    top: 50%;
+    left: 2px;
+    width: 1rem;
+    height: 1rem;
+    border-radius: 50%;
+    background-color: #bdbdbd;
+    transform: translateY(-50%);
+    transition: left 0.2s ease, background-color 0.2s ease;
+}
+
+.nav-slide-toggle-switch.seq-switch-toggle--downbeat {
+    background-color: #4a3f8f;
+    border-color: #7b6fd6;
+}
+
+.nav-slide-toggle-switch.seq-switch-toggle--downbeat:hover {
     background-color: #5a4f9f;
+    border-color: #8b7fe6;
+}
+
+.nav-slide-toggle-switch.seq-switch-toggle--downbeat .nav-slide-toggle-thumb {
+    left: calc(100% - 1rem - 2px);
+    transform: translateY(-50%);
+    background-color: #e8e4ff;
+}
+
+.main-menu-dropdown .nav-slide-toggle-wrap--mobile {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    gap: 0.35rem;
+    width: 100%;
+    max-width: 100%;
+    box-sizing: border-box;
+    padding: 0.45rem 0.5rem;
+    border-bottom: 1px solid #333;
+    flex-shrink: 1;
+    min-width: 0;
 }
 
 /* Preset select buttons inside the zone grid */
@@ -1228,13 +1423,43 @@ body.preset-ui-run .edit-mode-only {
         display: none;
     }
 
+    /* Beat/downbeat toggle lives in the mobile menu only */
+    #seq-switch-toggle-wrap {
+        display: none !important;
+    }
+
+    .main-menu-dropdown {
+        max-width: min(16rem, calc(100vw - 1rem));
+    }
+
+    #seq-switch-toggle-wrap-mobile .nav-slide-toggle-side-label {
+        font-size: 0.7rem;
+        flex-shrink: 1;
+        min-width: 0;
+    }
+
+    #seq-switch-toggle-wrap-mobile .nav-slide-toggle-switch.seq-switch-toggle {
+        width: 3.6rem;
+        height: 1.25rem;
+        flex-shrink: 0;
+    }
+
+    #seq-switch-toggle-wrap-mobile .nav-slide-toggle-switch .nav-slide-toggle-thumb {
+        width: 0.9rem;
+        height: 0.9rem;
+    }
+
+    #seq-switch-toggle-wrap-mobile .nav-slide-toggle-switch.seq-switch-toggle--downbeat .nav-slide-toggle-thumb {
+        left: calc(100% - 0.9rem - 2px);
+        transform: translateY(-50%);
+    }
+
     .header-menu-mobile {
         display: flex;
         flex-direction: row;
         align-items: center;
         gap: 0.35rem;
         margin-top: 0;
-        margin-left: 0;
     }
 
     .header-end {
@@ -1244,10 +1469,15 @@ body.preset-ui-run .edit-mode-only {
 
     .header-end .audio-top-indicator {
         min-width: 5rem;
-        padding: 0.2rem 0.45rem;
         flex-shrink: 0;
     }
 
+    .header-end .audio-top-beat-sync {
+        padding: 0.2rem 0.4rem;
+        min-height: 2rem;
+        gap: 0.3rem;
+    }
+
     .btn {
         font-size: 0.8rem;
         padding: 0.4rem 0.7rem;
@@ -1383,6 +1613,22 @@ body.preset-ui-run .edit-mode-only {
     min-width: 8rem;
 }
 
+.zone-content-kind-row {
+    display: flex;
+    flex-wrap: nowrap;
+    align-items: center;
+    gap: 1rem;
+    margin: 0.35rem 0 0.75rem;
+}
+
+.zone-content-kind-row label {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.35rem;
+    margin: 0;
+    white-space: nowrap;
+}
+
 .zone-devices-label {
     display: block;
     margin-top: 0.75rem;

src/static/zones.js

@@ -310,8 +310,7 @@ async function computeZonePresetUnionTargets(zoneDoc) {
 }
 
 /**
- * Device names for one sequence step. Empty stepGroupIds => all zone tab devices (``names`` only).
+ * Device names for one sequence step. Only devices in checked lane groups (within the zone tab).
- * Otherwise: lane groups intersected with that tab device list (not zone ``group_ids``).
  */
 async function resolveSequenceStepDeviceNames(zone, stepGroupIds) {
     const zoneT = await computeZoneNamesTargets(zone);
@@ -321,7 +320,7 @@ async function resolveSequenceStepDeviceNames(zone, stepGroupIds) {
         ? stepGroupIds.map((x) => String(x).trim()).filter((x) => x.length > 0)
         : [];
     if (!gids.length) {
-        return names.slice();
+        return [];
     }
     const zoneMacSet = new Set(
         macs.map((m) => normalizeDeviceMac(m)).filter((m) => m.length === 12),
@@ -497,6 +496,30 @@ function normalizeZoneContentKind(zoneDoc) {
     return null;
 }
 
+/** Display/save kind when ``content_kind`` is missing (legacy rows). */
+function effectiveZoneContentKind(zoneDoc) {
+    const explicit = normalizeZoneContentKind(zoneDoc);
+    if (explicit) return explicit;
+    const seqIds = Array.isArray(zoneDoc && zoneDoc.sequence_ids)
+        ? zoneDoc.sequence_ids.filter(Boolean)
+        : [];
+    const presetIds = tabPresetIdsInZoneDoc(zoneDoc || {});
+    if (seqIds.length > 0 && presetIds.length === 0) return 'sequences';
+    return 'presets';
+}
+
+/** @returns {boolean} */
+function zoneAllowsPresets(zoneDoc, zoneId) {
+    void zoneId;
+    return effectiveZoneContentKind(zoneDoc) === 'presets';
+}
+
+/** @returns {boolean} */
+function zoneAllowsSequences(zoneDoc, zoneId) {
+    void zoneId;
+    return effectiveZoneContentKind(zoneDoc) === 'sequences';
+}
+
 function applyZoneContentKindEditModal(kind) {
     const presetsBlock = document.getElementById('edit-zone-block-presets');
     const groupsBlock = document.getElementById('edit-zone-block-groups');
@@ -504,17 +527,16 @@ function applyZoneContentKindEditModal(kind) {
     const vis = (el, show) => {
         if (el) el.style.display = show ? '' : 'none';
     };
+    const k = kind === 'sequences' ? 'sequences' : 'presets';
     vis(groupsBlock, true);
-    if (!kind) {
+    vis(presetsBlock, k === 'presets');
-        vis(presetsBlock, true);
+    vis(seqBlock, k === 'sequences');
-        vis(seqBlock, true);
-        return;
-    }
-    vis(presetsBlock, kind === 'presets');
-    vis(seqBlock, kind === 'sequences');
 }
 
 window.normalizeZoneContentKind = normalizeZoneContentKind;
+window.effectiveZoneContentKind = effectiveZoneContentKind;
+window.zoneAllowsPresets = zoneAllowsPresets;
+window.zoneAllowsSequences = zoneAllowsSequences;
 
 // Load tabs list
 async function loadZones() {
@@ -572,11 +594,8 @@ function renderZonesList(tabs, tabOrder, currentZoneId) {
     for (const zoneId of tabOrder) {
         const zone = tabs[zoneId];
         if (zone) {
-            const activeClass = zoneId === currentZoneId ? 'active' : '';
+            const activeClass = String(zoneId) === String(currentZoneId) ? 'active' : '';
-            let disp = zone.name || `Zone ${zoneId}`;
+            const disp = zone.name || `Zone ${zoneId}`;
-            const kind = normalizeZoneContentKind(zone);
-            if (kind === 'presets') disp += ' · presets';
-            else if (kind === 'sequences') disp += ' · sequences';
             html += `
                 <button class="zone-button ${activeClass}" 
                         data-zone-id="${zoneId}"
@@ -622,10 +641,7 @@ function renderZonesListModal(tabs, tabOrder, currentZoneId) {
         row.dataset.zoneId = String(zoneId);
 
         const label = document.createElement("span");
-        let disp = (zone && zone.name) || zoneId;
+        const disp = zone.name || `Zone ${zoneId}`;
-        const kind = normalizeZoneContentKind(zone);
-        if (kind === 'presets') disp += ' · presets';
-        else if (kind === 'sequences') disp += ' · sequences';
         label.textContent = disp;
         if (String(zoneId) === String(currentZoneId)) {
             label.textContent = `✓ ${disp}`;
@@ -999,8 +1015,7 @@ async function refreshEditTabPresetsUi(zoneId) {
             return;
         }
         const tabData = await tabRes.json();
-        const kind = normalizeZoneContentKind(tabData);
+        if (!zoneAllowsPresets(tabData, zoneId)) {
-        if (kind === 'sequences') {
             currentEl.innerHTML =
                 '<span class="muted-text">This zone is for sequences only. Presets are hidden.</span>';
             addEl.innerHTML = '<span class="muted-text">—</span>';
@@ -1138,8 +1153,17 @@ async function openEditZoneModal(zoneId, zone) {
     });
     renderZoneGroupsEditor(groupsEditor, window.__editTabGroupRows, groupsMap);
 
+    const kind = effectiveZoneContentKind(tabData);
+    const typeLabel = document.getElementById('edit-zone-type-label');
+    if (typeLabel) {
+        typeLabel.textContent =
+            kind === 'sequences'
+                ? 'Zone type: Sequences (set when the zone was created)'
+                : 'Zone type: Presets (set when the zone was created)';
+    }
+
     if (modal) modal.classList.add("active");
-    applyZoneContentKindEditModal(normalizeZoneContentKind(tabData));
+    applyZoneContentKindEditModal(kind);
     await refreshEditTabPresetsUi(zoneId);
     if (typeof window.refreshEditTabSequencesUi === "function") {
         await window.refreshEditTabSequencesUi(zoneId);
@@ -1152,16 +1176,34 @@ async function updateZone(zoneId, name, groupRows) {
         const gids = Array.isArray(groupRows)
             ? groupRows.map((r) => String(r.id || "").trim()).filter((x) => x.length > 0)
             : [];
+        let existing = {};
+        try {
+            const cur = await fetch(`/zones/${encodeURIComponent(zoneId)}`, {
+                headers: { Accept: 'application/json' },
+            });
+            if (cur.ok) {
+                const j = await cur.json();
+                if (j && typeof j === 'object') existing = j;
+            }
+        } catch (_) {
+            /* use empty existing */
+        }
+        const lockedKind = effectiveZoneContentKind(existing);
         const response = await fetch(`/zones/${zoneId}`, {
             method: 'PUT',
             headers: {
                 'Content-Type': 'application/json'
             },
             body: JSON.stringify({
+                ...existing,
                 name: name,
                 names: [],
                 group_ids: gids,
-                preset_group_ids: {},
+                preset_group_ids:
+                    existing.preset_group_ids && typeof existing.preset_group_ids === 'object'
+                        ? existing.preset_group_ids
+                        : {},
+                content_kind: lockedKind,
             })
         });
         
@@ -1170,6 +1212,9 @@ async function updateZone(zoneId, name, groupRows) {
             // Reload tabs list
             await loadZonesModal();
             await loadZones();
+            if (String(currentZoneId) === String(zoneId)) {
+                await loadZoneContent(zoneId);
+            }
             // Close modal
             document.getElementById('edit-zone-modal').classList.remove('active');
             return true;
@@ -1361,6 +1406,8 @@ document.addEventListener('DOMContentLoaded', () => {
     });
 });
 
+window.selectZone = selectZone;
+
 // Export for use in other scripts
 window.zonesManager = {
     loadZones,

src/templates/index.html

@@ -9,18 +9,21 @@
 <body>
     <div class="app-container">
         <header>
-            <div class="zones-container">
-                <div id="zones-list">
-                    Loading zones...
-                </div>
-            </div>
             <div class="header-end">
-                <div id="audio-top-indicator" class="audio-top-indicator" title="Live audio BPM">
+                <div class="nav-slide-toggle-wrap seq-switch-toggle-wrap edit-mode-only" id="seq-switch-toggle-wrap">
-                    <div class="audio-top-indicator-main">
+                    <span class="nav-slide-toggle-side-label nav-slide-toggle-side-label--beat">Beat</span>
+                    <button type="button" role="switch" class="nav-slide-toggle-switch seq-switch-toggle" id="seq-switch-toggle" aria-pressed="false" aria-label="Switch sequence on beat" title="When starting a sequence: wait for beat or downbeat">
+                        <span class="nav-slide-toggle-track" aria-hidden="true"><span class="nav-slide-toggle-thumb"></span></span>
+                    </button>
+                    <span class="nav-slide-toggle-side-label nav-slide-toggle-side-label--downbeat">Downbeat</span>
+                </div>
+                <div id="audio-top-indicator" class="audio-top-indicator">
+                    <button type="button" id="audio-top-beat-sync" class="audio-top-beat-sync" disabled title="Sync step to music (S)">
                         <span class="audio-top-indicator-label">BPM</span>
                         <span id="audio-top-bpm-value" class="audio-top-indicator-value">--</span>
                         <span id="audio-top-beat-readout" class="audio-top-beat-readout" aria-live="polite"></span>
-                    </div>
+                        <span id="audio-top-bar-phase" class="audio-top-bar-phase" aria-live="polite" title="Bar phase (beat in bar)"></span>
+                    </button>
                 </div>
                 <div class="header-actions">
                 <div class="header-brightness-control">
@@ -38,12 +41,20 @@
                 <button class="btn btn-secondary edit-mode-only" id="send-profile-presets-btn">Send Presets</button>
                 <button class="btn btn-secondary edit-mode-only" id="led-tool-btn">LED Tool</button>
                 <button class="btn btn-secondary" id="audio-btn">Audio</button>
+                <button type="button" class="btn btn-secondary" id="audio-nav-reset-btn" hidden title="Clear stuck BPM / beat tracking">Reset detector</button>
                 <button class="btn btn-secondary" id="help-btn">Help</button>
                 <button type="button" class="btn btn-secondary ui-mode-toggle" id="ui-mode-toggle" aria-pressed="false" title="Switch preset strip mode — label is the mode you will switch to">Edit mode</button>
                 </div>
                 <div class="header-menu-mobile">
                 <button class="btn btn-secondary" id="main-menu-btn">Menu</button>
                 <div id="main-menu-dropdown" class="main-menu-dropdown">
+                    <div class="nav-slide-toggle-wrap nav-slide-toggle-wrap--mobile seq-switch-toggle-wrap" id="seq-switch-toggle-wrap-mobile">
+                        <span class="nav-slide-toggle-side-label nav-slide-toggle-side-label--beat">Beat</span>
+                        <button type="button" role="switch" class="nav-slide-toggle-switch seq-switch-toggle" id="seq-switch-toggle-mobile" aria-pressed="false" aria-label="Switch sequence on beat" title="Beat or downbeat">
+                            <span class="nav-slide-toggle-track" aria-hidden="true"><span class="nav-slide-toggle-thumb"></span></span>
+                        </button>
+                        <span class="nav-slide-toggle-side-label nav-slide-toggle-side-label--downbeat">Downbeat</span>
+                    </div>
                     <button type="button" class="ui-mode-toggle" id="ui-mode-toggle-mobile" aria-pressed="false">Edit mode</button>
                     <div class="menu-brightness-control">
                         <label for="menu-brightness-slider">Brightness</label>
@@ -60,10 +71,16 @@
                     <button type="button" class="edit-mode-only" data-target="send-profile-presets-btn">Send Presets</button>
                     <button type="button" class="edit-mode-only" data-target="led-tool-btn">LED Tool</button>
                     <button type="button" data-target="audio-btn">Audio</button>
+                    <button type="button" id="audio-nav-reset-mobile" data-target="audio-nav-reset-btn" hidden>Reset detector</button>
                     <button type="button" data-target="help-btn">Help</button>
                 </div>
                 </div>
             </div>
+            <div class="zones-container">
+                <div id="zones-list">
+                    Loading zones...
+                </div>
+            </div>
         </header>
 
         <div class="main-content">
@@ -83,11 +100,10 @@
                 <input type="text" id="new-zone-name" placeholder="Zone name">
                 <button class="btn btn-primary" id="create-zone-btn">Create</button>
             </div>
-            <fieldset class="muted-text" style="margin:0.35rem 0 0.75rem;border:none;padding:0;">
+            <div class="zone-content-kind-row muted-text">
-                <legend style="font-size:0.85em;margin-bottom:0.35rem;">This zone is for</legend>
+                <label><input type="radio" name="new-zone-content-kind" value="presets" checked> Presets</label>
-                <label style="margin-right:1rem;"><input type="radio" name="new-zone-content-kind" value="presets" checked> Presets</label>
                 <label><input type="radio" name="new-zone-content-kind" value="sequences"> Sequences</label>
-            </fieldset>
+            </div>
             <div id="zones-list-modal" class="profiles-list"></div>
             <div class="modal-actions">
                 <button class="btn btn-secondary" id="zones-close-btn">Close</button>
@@ -101,12 +117,9 @@
             <h2>Edit Zone</h2>
             <form id="edit-zone-form">
                 <input type="hidden" id="edit-zone-id">
-                <div class="modal-actions" style="margin-bottom: 1rem;">
-                    <button type="submit" class="btn btn-primary">Save</button>
-                    <button type="button" class="btn btn-secondary" onclick="document.getElementById('edit-zone-modal').classList.remove('active')">Close</button>
-                </div>
                 <label>Zone Name:</label>
                 <input type="text" id="edit-zone-name" placeholder="Enter zone name" required>
+                <p id="edit-zone-type-label" class="zone-content-kind-row muted-text" aria-live="polite"></p>
                 <div id="edit-zone-block-groups">
                 <label class="zone-devices-label">Device groups on this zone</label>
                 <div id="edit-zone-groups-editor" class="zone-devices-editor"></div>
@@ -123,6 +136,10 @@
                 <label class="zone-presets-section-label">Add a sequence to this zone</label>
                 <div id="edit-zone-sequences-list" class="profiles-list edit-zone-presets-scroll"></div>
                 </div>
+                <div class="modal-actions">
+                    <button type="submit" class="btn btn-primary">Save</button>
+                    <button type="button" class="btn btn-secondary" onclick="document.getElementById('edit-zone-modal').classList.remove('active')">Close</button>
+                </div>
             </form>
         </div>
     </div>
@@ -134,6 +151,7 @@
             <div class="profiles-actions">
                 <input type="text" id="new-profile-name" placeholder="Profile name">
                 <button class="btn btn-primary" id="create-profile-btn">Create</button>
+                <button type="button" class="btn btn-secondary" id="import-profile-btn">Import</button>
             </div>
             <div class="form-group" style="margin-top: 0.5rem; margin-bottom: 0;">
                 <label style="display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0;">
@@ -183,10 +201,6 @@
             <h2>Edit device group</h2>
             <form id="edit-group-form">
                 <input type="hidden" id="edit-group-id">
-                <div class="modal-actions" style="margin-bottom: 1rem;">
-                    <button type="submit" class="btn btn-primary">Save</button>
-                    <button type="button" class="btn btn-secondary" id="edit-group-close-btn">Cancel</button>
-                </div>
                 <label for="edit-group-name">Group name</label>
                 <input type="text" id="edit-group-name" required autocomplete="off">
                 <label class="muted-text" style="display:flex;align-items:flex-start;gap:0.5rem;margin-top:0.5rem;">
@@ -227,6 +241,10 @@
                 <label for="edit-group-debug" style="margin-top:1rem;display:block;">Debug</label>
                 <small class="muted-text" style="display:block;margin-bottom:0.35rem;">Stored row and the JSON preview for <strong>Save</strong> (updates as you edit).</small>
                 <textarea id="edit-group-debug" rows="8" readonly spellcheck="false" style="width:100%;font-family:monospace;resize:vertical;"></textarea>
+                <div class="modal-actions">
+                    <button type="submit" class="btn btn-primary">Save</button>
+                    <button type="button" class="btn btn-secondary" id="edit-group-close-btn">Cancel</button>
+                </div>
             </form>
         </div>
     </div>
@@ -301,6 +319,7 @@
             <h2>Presets</h2>
             <div class="modal-actions">
                 <button class="btn btn-primary" id="preset-add-btn">Add</button>
+                <button type="button" class="btn btn-secondary" id="import-preset-btn">Import</button>
                 <button class="btn btn-danger" id="preset-clear-device-btn">Clear Device Presets</button>
             </div>
             <div id="presets-list" class="profiles-list"></div>
@@ -316,6 +335,7 @@
             <h2>Sequences</h2>
             <div class="modal-actions">
                 <button type="button" class="btn btn-primary" id="sequence-add-btn">Add</button>
+                <button type="button" class="btn btn-secondary" id="import-sequence-btn">Import</button>
                 <button type="button" class="btn btn-secondary" id="sequences-open-presets-btn">Presets</button>
             </div>
             <div id="sequences-list" class="profiles-list"></div>
@@ -342,12 +362,14 @@
                 <label for="sequence-editor-simulated-bpm" style="display:block;margin-bottom:0.25rem;">Simulated BPM (when audio is off)</label>
                 <input type="number" id="sequence-editor-simulated-bpm" min="30" max="300" value="120" style="width:6rem;" title="Used only while the audio detector is stopped">
                 <p id="sequence-editor-bpm-live" class="muted-text" style="font-size:0.85em;margin:0.5rem 0 0 0;">—</p>
+                <label style="display:block;margin-top:0.65rem;">
+                    <input type="checkbox" id="sequence-editor-loop" checked>
+                    Loop sequence (restart from the first step after the last)
+                </label>
             </div>
             <div id="sequence-editor-lanes"></div>
-            <div class="modal-actions" style="margin-top:0.75rem;">
-                <button type="button" class="btn btn-secondary btn-small" id="sequence-editor-add-lane-btn">Add lane</button>
-            </div>
             <div class="modal-actions preset-editor-modal-actions">
+                <button type="button" class="btn btn-secondary btn-small" id="sequence-editor-add-lane-btn">Add lane</button>
                 <button type="button" class="btn btn-danger" id="sequence-editor-delete-btn">Delete</button>
                 <button type="button" class="btn btn-primary" id="sequence-editor-save-btn">Save</button>
                 <button type="button" class="btn btn-secondary" id="sequence-editor-close-btn">Close</button>
@@ -401,6 +423,16 @@
                     <span class="muted-text" style="font-size: 0.85em;">beats (this app only)</span>
                 </div>
             </div>
+            <div class="preset-editor-field" id="preset-reverse-group" hidden>
+                <label for="preset-reverse-input" style="display:flex;align-items:center;gap:0.5rem;margin-bottom:0;">
+                    <input type="checkbox" id="preset-reverse-input">
+                    Reverse direction (strip installed upside down)
+                </label>
+            </div>
+            <div class="preset-editor-field preset-mode-field" id="preset-mode-group" hidden>
+                <label for="preset-mode-input" id="preset-mode-label">Mode</label>
+                <select id="preset-mode-input" class="preset-mode-input"></select>
+            </div>
             <div class="n-params-grid">
                 <div class="n-param-group">
                     <label for="preset-n1-input" id="preset-n1-label">n1:</label>
@@ -611,22 +643,45 @@
                 <label>Current BPM</label>
                 <div class="audio-bpm-row">
                     <div id="audio-bpm-value" class="audio-bpm-readout">--</div>
-                    <div id="audio-modal-beat-readout" class="audio-modal-beat-readout muted-text" aria-live="polite"></div>
                 </div>
             </div>
             <div class="form-group">
                 <label>Detected hit type</label>
                 <div id="audio-hit-type-value" class="audio-hit-type-readout">unknown</div>
             </div>
+            <div class="form-group">
+                <label>Bar phase</label>
+                <div class="audio-bpm-row">
+                    <div id="audio-bar-phase-value" class="audio-bpm-readout" title="Beat in bar (kick hints downbeat)">--</div>
+                </div>
+                <small class="muted-text">Bar uses kick-heavy hits (default 4/4). Tap <strong>Sync</strong> on a downbeat to lock bar phase.</small>
+            </div>
             <div class="form-group">
                 <label>Flash on beat</label>
                 <div id="audio-beat-flash" class="audio-beat-flash" aria-hidden="true"></div>
             </div>
+
+            <div class="settings-section audio-settings-section">
+                <h3>Audio settings</h3>
                 <div class="form-group">
                     <label for="audio-beat-phase-ms">Beat phase shift (ms)</label>
                     <input type="number" id="audio-beat-phase-ms" min="0" max="500" step="5" value="0" style="width:6rem;">
-                <small class="muted-text">Delays beat flashes and sequenced beats so they line up with what you hear (saved in this browser).</small>
+                    <small class="muted-text">Delays beat flashes so they line up with what you hear (saved on the controller).</small>
                 </div>
+                <div class="form-group">
+                    <label>Beat sync</label>
+                    <button type="button" id="audio-modal-beat-readout" class="audio-modal-beat-readout muted-text" disabled title="Sync step to music (S)" aria-live="polite"></button>
+                    <small class="muted-text">While a sequence is playing, tap the BPM/beat button in the header on a downbeat to align the step counter. Shortcut: <kbd>S</kbd>.</small>
+                </div>
+                <div class="form-group">
+                    <label>Sequence alignment</label>
+                    <div class="profiles-actions" style="flex-wrap: wrap;">
+                        <button type="button" class="btn btn-secondary" id="audio-sync-pass-btn">Restart pass</button>
+                    </div>
+                    <small class="muted-text"><strong>Restart pass</strong> jumps to step 1 of the sequence (<kbd>Shift+S</kbd>). Use <strong>Reset detector</strong> in the header (while audio is running) to clear stuck BPM/beat tracking without stopping audio.</small>
+                </div>
+            </div>
+
             <div class="modal-actions">
                 <button type="button" class="btn btn-primary" id="audio-start-btn">Start</button>
                 <button type="button" class="btn btn-secondary" id="audio-stop-btn">Stop</button>
@@ -707,79 +762,14 @@
         </div>
     </div>
 
-    <!-- LED Tool Modal -->
+    <!-- LED Tool Modal (led-tool/static settings editor) -->
     <div id="led-tool-modal" class="modal">
-        <div class="modal-content">
+        <div class="modal-content" style="max-width: 960px; width: 95vw;">
-            <h2>LED Tool (USB)</h2>
+            <div class="modal-actions" style="margin-bottom: 0.5rem;">
-            <p class="muted-text" style="margin-top: 0;">Configure a driver connected over USB using <code>led-tool</code>.</p>
+                <h2 style="margin: 0; flex: 1;">LED Tool — device settings</h2>
-            <div id="led-tool-message" class="message" style="margin-bottom: 0.75rem;"></div>
-            <form id="led-tool-form">
-                <div class="form-group">
-                    <label for="led-tool-port">Serial port</label>
-                    <div class="profiles-actions" style="gap: 0.5rem;">
-                        <select id="led-tool-port" required style="flex:1;">
-                            <option value="">Select a serial port</option>
-                        </select>
-                        <button type="button" class="btn btn-secondary" id="led-tool-refresh-ports-btn">Refresh</button>
-                    </div>
-                </div>
-
-                <div class="form-group">
-                    <label for="led-tool-name">Name</label>
-                    <input type="text" id="led-tool-name" placeholder="led-abcdef123456">
-                </div>
-                <div class="profiles-actions">
-                    <div class="preset-editor-field">
-                        <label for="led-tool-num-leds">Num LEDs</label>
-                        <input type="number" id="led-tool-num-leds" min="1" max="5000" placeholder="60">
-                    </div>
-                    <div class="preset-editor-field">
-                        <label for="led-tool-led-pin">LED pin</label>
-                        <input type="number" id="led-tool-led-pin" min="0" max="48" placeholder="4">
-                    </div>
-                </div>
-                <div class="profiles-actions">
-                    <div class="preset-editor-field">
-                        <label for="led-tool-brightness">Brightness</label>
-                        <input type="number" id="led-tool-brightness" min="0" max="255" placeholder="255">
-                    </div>
-                    <div class="preset-editor-field">
-                        <label for="led-tool-wifi-channel">WiFi channel</label>
-                        <input type="number" id="led-tool-wifi-channel" min="1" max="11" placeholder="6">
-                    </div>
-                </div>
-                <div class="profiles-actions">
-                    <div class="preset-editor-field">
-                        <label for="led-tool-transport">Transport</label>
-                        <select id="led-tool-transport">
-                            <option value="">(no change)</option>
-                            <option value="espnow">espnow</option>
-                            <option value="wifi">wifi</option>
-                        </select>
-                    </div>
-                    <div class="preset-editor-field">
-                        <label for="led-tool-default">Default preset</label>
-                        <input type="text" id="led-tool-default" placeholder="on">
-                    </div>
-                </div>
-                <div class="form-group">
-                    <label for="led-tool-ssid">SSID</label>
-                    <input type="text" id="led-tool-ssid" placeholder="Your WiFi SSID">
-                </div>
-                <div class="form-group">
-                    <label for="led-tool-password">WiFi password</label>
-                    <input type="password" id="led-tool-password" placeholder="WiFi password">
-                </div>
-
-                <div class="modal-actions">
-                    <button type="button" class="btn btn-secondary" id="led-tool-read-btn">Read</button>
-                    <button type="button" class="btn btn-secondary" id="led-tool-reset-btn">Reset</button>
-                    <button type="submit" class="btn btn-primary">Apply via USB</button>
                 <button type="button" class="btn btn-secondary" id="led-tool-close-btn">Close</button>
             </div>
-            </form>
+            <iframe id="led-tool-iframe" title="LED device settings editor" src="about:blank" allow="serial" style="width:100%;height:min(75vh,720px);border:1px solid #4a4a4a;border-radius:4px;background:#0b1020;"></iframe>
-            <label for="led-tool-output" style="margin-top:0.5rem; display:block;">Command output</label>
-            <textarea id="led-tool-output" rows="12" readonly style="width:100%; font-family:monospace; resize:vertical;"></textarea>
         </div>
     </div>
 
@@ -789,6 +779,7 @@
     <script src="/static/help.js"></script>
     <script src="/static/led_tool.js"></script>
     <script src="/static/color_palette.js"></script>
+    <script src="/static/bundle_io.js"></script>
     <script src="/static/profiles.js"></script>
     <script src="/static/zone_palette.js"></script>
     <script src="/static/patterns.js"></script>
@@ -796,5 +787,6 @@
     <script src="/static/sequences.js"></script>
     <script src="/static/devices.js"></script>
     <script src="/static/audio.js"></script>
+    <script src="/static/numpad.js"></script>
 </body>
 </html>

src/templates/settings.html

@@ -261,7 +261,7 @@
                 return;
             }
             try {
-                const response = await fetch('/settings/settings', {
+                const response = await fetch('/settings', {
                     method: 'PUT',
                     headers: { 'Content-Type': 'application/json' },
                     body: JSON.stringify({ wifi_channel: wifiChannel }),

src/util/audio_detector.py

@@ -4,6 +4,12 @@ import os
 import queue
 import threading
 import time
+from typing import Any
+
+
+_HOLDOVER_BPM_MIN = 30.0
+_HOLDOVER_BPM_MAX = 300.0
+_HOLDOVER_MAX_S = 300.0
 
 
 class AudioBeatDetector:
@@ -13,6 +19,11 @@ class AudioBeatDetector:
         self._stream = None
         self._running = False
         self._stop_event = threading.Event()
+        self._runtime = None
+        self._pending_reset = False
+        self._holdover_thread: threading.Thread | None = None
+        self._holdover_stop = threading.Event()
+        self._holdover_active = False
         self._status = {
             "running": False,
             "bpm": None,
@@ -20,6 +31,11 @@ class AudioBeatDetector:
             "beat_seq": 0,
             "beat_type": "unknown",
             "beat_type_confidence": 0.0,
+            "bar_beat": 1,
+            "beats_per_bar": 4,
+            "is_downbeat": False,
+            "phase_confidence": 0.0,
+            "bar_phase_readout": "1/4",
             "error": None,
             "device": None,
         }
@@ -100,6 +116,11 @@ class AudioBeatDetector:
                     "beat_seq": 0,
                     "beat_type": "unknown",
                     "beat_type_confidence": 0.0,
+                    "bar_beat": 1,
+                    "beats_per_bar": 4,
+                    "is_downbeat": False,
+                    "phase_confidence": 0.0,
+                    "bar_phase_readout": "1/4",
                     "error": None,
                     "device": device,
                 }
@@ -111,6 +132,7 @@ class AudioBeatDetector:
             self._thread.start()
 
     def stop(self):
+        self._stop_bpm_holdover()
         with self._lock:
             self._stop_event.set()
             t = self._thread
@@ -139,11 +161,159 @@ class AudioBeatDetector:
             self._running = False
             self._thread = None
             self._stream = None
+            self._pending_reset = False
             self._status["running"] = False
 
     def status(self):
         with self._lock:
-            return dict(self._status)
+            st = dict(self._status)
+            holdover = self._holdover_active
+        last = st.get("last_beat_ts")
+        if st.get("running") and last is not None and not holdover:
+            try:
+                if (time.time() - float(last)) > 4.0:
+                    st["bpm"] = None
+            except (TypeError, ValueError):
+                pass
+        return st
+
+    def _apply_tracking_reset_status(self) -> None:
+        """Refresh published status after a tracking reset (lock must be held)."""
+        bpb = max(1, int(self._status.get("beats_per_bar") or 4))
+        self._status.update(
+            {
+                "running": True,
+                "beat_type": "unknown",
+                "beat_type_confidence": 0.0,
+                "bar_beat": 1,
+                "is_downbeat": True,
+                "phase_confidence": 0.0,
+                "bar_phase_readout": f"1/{bpb}",
+            }
+        )
+
+    def _clamp_holdover_bpm(self, bpm: Any) -> float | None:
+        try:
+            v = float(bpm)
+        except (TypeError, ValueError):
+            return None
+        if not (_HOLDOVER_BPM_MIN <= v <= _HOLDOVER_BPM_MAX):
+            return None
+        return v
+
+    def _holdover_interval_s(self, bpm: float) -> float:
+        return 60.0 / max(_HOLDOVER_BPM_MIN, min(_HOLDOVER_BPM_MAX, float(bpm)))
+
+    def _stop_bpm_holdover(self) -> None:
+        with self._lock:
+            self._holdover_active = False
+        self._holdover_stop.set()
+        t = self._holdover_thread
+        if t and t.is_alive() and t is not threading.current_thread():
+            t.join(timeout=2.0)
+        with self._lock:
+            if self._holdover_thread is t:
+                self._holdover_thread = None
+
+    def _advance_holdover_bar_phase_locked(self) -> dict:
+        """Advance bar phase for one synthetic beat (lock must be held)."""
+        bpb = max(1, int(self._status.get("beats_per_bar") or 4))
+        prev = int(self._status.get("bar_beat") or 1)
+        bar_beat = (prev % bpb) + 1
+        is_downbeat = bar_beat == 1
+        bar_readout = f"{bar_beat}/{bpb}"
+        self._status["bar_beat"] = bar_beat
+        self._status["is_downbeat"] = is_downbeat
+        self._status["bar_phase_readout"] = bar_readout
+        return {
+            "bar_beat": bar_beat,
+            "beats_per_bar": bpb,
+            "is_downbeat": is_downbeat,
+            "bar_phase_readout": bar_readout,
+        }
+
+    def _emit_holdover_beat(self, bpm: float) -> None:
+        now = time.time()
+        with self._lock:
+            if not self._running or not self._holdover_active:
+                return
+            self._advance_holdover_bar_phase_locked()
+            self._status["last_beat_ts"] = now
+            self._status["bpm"] = float(bpm)
+            self._status["beat_type"] = "holdover"
+            self._status["beat_type_confidence"] = 0.0
+            self._status["beat_seq"] = int(self._status.get("beat_seq", 0)) + 1
+        try:
+            from util import sequence_playback as seq_pb
+
+            seq_pb.push_thread_beat()
+        except Exception as e:
+            print(f"[audio] holdover beat queue: {e}")
+
+    def _holdover_loop(self, bpm: float, started_at: float) -> None:
+        interval = self._holdover_interval_s(bpm)
+        while not self._holdover_stop.is_set():
+            with self._lock:
+                if not self._running or not self._holdover_active:
+                    return
+                if (time.time() - started_at) > _HOLDOVER_MAX_S:
+                    self._holdover_active = False
+                    return
+                last = self._status.get("last_beat_ts")
+            if last is not None:
+                try:
+                    delay = max(0.02, float(last) + interval - time.time())
+                except (TypeError, ValueError):
+                    delay = interval
+            else:
+                delay = interval
+            if self._holdover_stop.wait(delay):
+                return
+            self._emit_holdover_beat(bpm)
+
+    def _start_bpm_holdover(self, bpm: float) -> None:
+        bpm_v = self._clamp_holdover_bpm(bpm)
+        if bpm_v is None:
+            return
+        self._stop_bpm_holdover()
+        self._holdover_stop.clear()
+        started_at = time.time()
+        with self._lock:
+            self._holdover_active = True
+            self._holdover_thread = threading.Thread(
+                target=self._holdover_loop,
+                args=(bpm_v, started_at),
+                name="audio-bpm-holdover",
+                daemon=True,
+            )
+            t = self._holdover_thread
+        t.start()
+
+    def _process_pending_reset(self, runtime) -> None:
+        """Run ``reset_state`` on the audio thread (safe for aubio tempo)."""
+        with self._lock:
+            if not self._pending_reset:
+                return
+            self._pending_reset = False
+        try:
+            runtime.reset_state()
+            with self._lock:
+                self._apply_tracking_reset_status()
+        except Exception as e:
+            print(f"[audio] pending reset: {e}")
+
+    def reset_tracking(self) -> bool:
+        """Clear detector tempo history without stopping the input stream."""
+        holdover_bpm = None
+        with self._lock:
+            if not self._running or self._runtime is None:
+                return False
+            holdover_bpm = self._clamp_holdover_bpm(self._status.get("bpm"))
+            self._pending_reset = True
+            self._apply_tracking_reset_status()
+        if holdover_bpm is not None:
+            self._start_bpm_holdover(holdover_bpm)
+        return True
 
     def _set_error(self, msg):
         print(f"[audio] {msg}")
@@ -152,7 +322,28 @@ class AudioBeatDetector:
             self._status["running"] = False
             self._running = False
 
-    def _record_beat(self, bpm, beat_type="unknown", beat_type_confidence=0.0):
+    def anchor_bar_phase(self) -> bool:
+        """Mark the current moment as bar beat 1 (downbeat), e.g. after manual sync."""
+        with self._lock:
+            rt = self._runtime
+        if rt is None:
+            return False
+        try:
+            rt.anchor_bar_phase(time.time())
+            with self._lock:
+                self._status["bar_beat"] = 1
+                self._status["is_downbeat"] = True
+                self._status["bar_phase_readout"] = f"1/{int(self._status.get('beats_per_bar') or 4)}"
+                self._status["phase_confidence"] = max(
+                    float(self._status.get("phase_confidence") or 0.0), 0.85
+                )
+            return True
+        except Exception as e:
+            print(f"[audio] anchor_bar_phase: {e}")
+            return False
+
+    def _record_beat(self, bpm, beat_type="unknown", beat_type_confidence=0.0, **phase_fields):
+        self._stop_bpm_holdover()
         now = time.time()
         with self._lock:
             self._status["last_beat_ts"] = now
@@ -160,6 +351,16 @@ class AudioBeatDetector:
             self._status["beat_type"] = beat_type
             self._status["beat_type_confidence"] = float(beat_type_confidence or 0.0)
             self._status["beat_seq"] = int(self._status.get("beat_seq", 0)) + 1
+            if phase_fields.get("bar_beat") is not None:
+                self._status["bar_beat"] = int(phase_fields["bar_beat"])
+            if phase_fields.get("beats_per_bar") is not None:
+                self._status["beats_per_bar"] = int(phase_fields["beats_per_bar"])
+            if phase_fields.get("is_downbeat") is not None:
+                self._status["is_downbeat"] = bool(phase_fields["is_downbeat"])
+            if phase_fields.get("phase_confidence") is not None:
+                self._status["phase_confidence"] = float(phase_fields["phase_confidence"])
+            if phase_fields.get("bar_phase_readout"):
+                self._status["bar_phase_readout"] = str(phase_fields["bar_phase_readout"])
         try:
             from util import sequence_playback as seq_pb
 
@@ -210,15 +411,17 @@ class AudioBeatDetector:
                 flux_weight=0.3,
                 threshold_multiplier=1.35,
                 ema_alpha=0.08,
-                min_ioi_ms=85.0,
+                min_ioi_ms=100.0,
                 bpm_window=8,
                 post_url="",
                 aubio_method="default",
-                aubio_threshold=0.12,
+                aubio_threshold=0.14,
-                silence_gate_db=-58.0,
+                beats_per_bar=4,
             )
             runtime = beat_mod.BeatDetectRuntime(args)
             runtime.setup(sample_rate=sample_rate)
+            with self._lock:
+                self._runtime = runtime
             hop_size = runtime.frame_size
 
             audio_q = queue.Queue(maxsize=64)
@@ -243,10 +446,12 @@ class AudioBeatDetector:
             stream.start()
             try:
                 while not self._stop_event.is_set():
+                    self._process_pending_reset(runtime)
                     try:
                         frame = audio_q.get(timeout=0.1)
                     except queue.Empty:
                         continue
+                    self._process_pending_reset(runtime)
                     if frame.shape[0] != hop_size:
                         if frame.shape[0] > hop_size:
                             frame = frame[:hop_size]
@@ -260,6 +465,11 @@ class AudioBeatDetector:
                         bpm,
                         beat_type=event.get("beat_type", "unknown"),
                         beat_type_confidence=event.get("beat_type_confidence", 0.0),
+                        bar_beat=event.get("bar_beat"),
+                        beats_per_bar=event.get("beats_per_bar"),
+                        is_downbeat=event.get("is_downbeat"),
+                        phase_confidence=event.get("phase_confidence"),
+                        bar_phase_readout=event.get("bar_phase_readout"),
                     )
             finally:
                 try:
@@ -280,6 +490,7 @@ class AudioBeatDetector:
             with self._lock:
                 self._running = False
                 self._status["running"] = False
+                self._runtime = None
 
 
 # Set from ``main`` so sequence playback can tell real audio from simulated beats.
@@ -299,3 +510,25 @@ def shared_beat_detector_running():
         return bool(d.status().get("running"))
     except Exception:
         return False
+
+
+def shared_beat_status_snapshot() -> dict:
+    """Thread-safe copy of live detector status, or {} if audio is off."""
+    d = _shared_beat_detector
+    if d is None:
+        return {}
+    try:
+        return dict(d.status())
+    except Exception:
+        return {}
+
+
+def anchor_shared_bar_phase() -> bool:
+    """Anchor bar phase on the shared detector (no-op if audio is off)."""
+    d = _shared_beat_detector
+    if d is None:
+        return False
+    try:
+        return bool(d.anchor_bar_phase())
+    except Exception:
+        return False

src/util/audio_run_persist.py

@@ -30,20 +30,64 @@ def read_audio_run_state() -> Dict[str, Any]:
     except (OSError, json.JSONDecodeError, TypeError):
         return {"enabled": False, "device": None}
     if not isinstance(raw, dict):
-        return {"enabled": False, "device": None}
+        return {
+            "enabled": False,
+            "device": None,
+            "device_override": "",
+            "device_select": "",
+        }
     enabled = bool(raw.get("enabled"))
     dev = raw.get("device", None)
-    return {"enabled": enabled, "device": dev}
+    return {
+        "enabled": enabled,
+        "device": dev,
+        "device_override": str(raw.get("device_override") or ""),
+        "device_select": str(raw.get("device_select") or ""),
+    }
 
 
-def write_audio_run_state(*, enabled: bool, device: Any = None) -> None:
+def write_audio_run_state(
-    """Write run intent. When ``enabled`` is false, keep ``device`` from the previous file for next start."""
+    *,
+    enabled: bool,
+    device: Any = None,
+    device_override: str | None = None,
+    device_select: str | None = None,
+) -> None:
+    """Write run intent. When ``enabled`` is false, keep device fields from the previous file."""
     path = _db_path()
     prev = read_audio_run_state()
     if enabled:
-        data = {"enabled": True, "device": device}
+        data = {
+            "enabled": True,
+            "device": device,
+            "device_override": (
+                str(device_override)
+                if device_override is not None
+                else str(prev.get("device_override") or "")
+            ),
+            "device_select": (
+                str(device_select)
+                if device_select is not None
+                else str(prev.get("device_select") or "")
+            ),
+        }
+        if device_select is None and device is not None:
+            data["device_select"] = str(device)
     else:
-        data = {"enabled": False, "device": prev.get("device")}
+        data = {
+            "enabled": False,
+            "device": prev.get("device"),
+            "device_override": (
+                str(device_override)
+                if device_override is not None
+                else str(prev.get("device_override") or "")
+            ),
+            "device_select": (
+                str(device_select)
+                if device_select is not None
+                else str(prev.get("device_select") or "")
+            ),
+        }
     try:
         os.makedirs(os.path.dirname(path), exist_ok=True)
         with open(path, "w", encoding="utf-8") as f:

src/util/beat_driver_route.py

@@ -299,6 +299,10 @@ def _apply_manual_beat_route_standalone_overlay(
         return
     names = [str(n).strip() for n in device_names if str(n).strip()]
     with _route_lock:
+        if _sequence_lane_covers_standalone_overlay(names, str(wire_preset_id).strip()):
+            _lane_manual.pop(-1, None)
+            _sync_public_beat_route_from_lane_table()
+            return
         _lane_manual[-1] = {
             "device_names": names,
             "wire_preset_id": str(wire_preset_id).strip(),
@@ -350,6 +354,11 @@ def set_sequence_manual_lane_route(
             "manual_beat_n": mn,
             "beat_counter": bc,
         }
+        overlay = _lane_manual.get(-1)
+        if overlay and _lane_route_targets_key(names, wid) == _lane_route_targets_key(
+            overlay.get("device_names") or [], str(overlay.get("wire_preset_id") or "")
+        ):
+            _lane_manual.pop(-1, None)
         _sync_public_beat_route_from_lane_table()
 
 
@@ -362,6 +371,49 @@ def clear_sequence_manual_lane_route(lane_index: int) -> None:
         _sync_public_beat_route_from_lane_table()
 
 
+def _lane_route_targets_key(device_names: List[str], wire_preset_id: str) -> Tuple[Tuple[str, ...], str]:
+    names = tuple(sorted({str(n).strip() for n in (device_names or []) if str(n).strip()}))
+    return names, str(wire_preset_id or "").strip()
+
+
+def _sequence_lane_covers_standalone_overlay(device_names: List[str], wire_preset_id: str) -> bool:
+    """True when a sequence lane (0..n) already routes the same device(s) and wire preset."""
+    key = _lane_route_targets_key(device_names, wire_preset_id)
+    for lane_key, entry in _lane_manual.items():
+        if not isinstance(lane_key, int) or lane_key < 0:
+            continue
+        other = _lane_route_targets_key(
+            entry.get("device_names") or [], str(entry.get("wire_preset_id") or "")
+        )
+        if other == key:
+            return True
+    return False
+
+
+def mark_manual_select_sent_for_targets(
+    device_names: List[str], wire_preset_id: str
+) -> None:
+    """A ``select`` was just sent for these targets; skip one duplicate on the next beat."""
+    key = _lane_route_targets_key(device_names, wire_preset_id)
+    with _route_lock:
+        for entry in _lane_manual.values():
+            if not isinstance(entry, dict):
+                continue
+            other = _lane_route_targets_key(
+                entry.get("device_names") or [], str(entry.get("wire_preset_id") or "")
+            )
+            if other == key:
+                entry["suppress_next_notify"] = True
+
+
+def mark_sequence_manual_lane_select_sent(lane_index: int) -> None:
+    """A ``select`` was just sent for this lane; skip one duplicate on the next beat."""
+    with _route_lock:
+        e = _lane_manual.get(lane_index)
+        if e is not None:
+            e["suppress_next_notify"] = True
+
+
 def sync_beat_route_from_push_sequence(
     sequence: List[Any],
     target_macs: Optional[List[str]] = None,
@@ -438,6 +490,7 @@ def sync_beat_route_from_push_sequence(
             )
         else:
             _apply_manual_beat_route(device_names, wire_preset_id, preset_body)
+        mark_manual_select_sent_for_targets(device_names, wire_preset_id)
         return
 
     wire_id, body = _single_manual_wire_preset(merged_presets)
@@ -547,6 +600,7 @@ def notify_beat_detected() -> None:
         if not _lane_manual:
             return
         work = []
+        seen_targets: Set[Tuple[Tuple[str, ...], str]] = set()
         for key in sorted(_lane_manual.keys()):
             e = _lane_manual[key]
             names = e.get("device_names") or []
@@ -555,6 +609,8 @@ def notify_beat_detected() -> None:
             pattern = str(e.get("pattern") or "")
             if pattern and not _pattern_supports_manual(pattern):
                 continue
+            if e.pop("suppress_next_notify", False):
+                continue
             try:
                 n = int(e.get("manual_beat_n") or 1)
             except (TypeError, ValueError):
@@ -564,7 +620,12 @@ def notify_beat_detected() -> None:
             c = int(e["beat_counter"])
             if (c - 1) % n != 0:
                 continue
-            work.append((list(names), str(e.get("wire_preset_id") or "2")))
+            wire = str(e.get("wire_preset_id") or "2")
+            target_key = _lane_route_targets_key(names, wire)
+            if target_key in seen_targets:
+                continue
+            seen_targets.add(target_key)
+            work.append((list(names), wire))
         if work:
             _preset_session_beats += 1
     if not work:

src/util/binary_envelope.py

@@ -43,6 +43,8 @@ import json
 import struct
 from typing import Any, Dict, List, Optional, Tuple
 
+from util.espnow_message import wire_n6
+
 BINARY_ENVELOPE_VERSION_1 = 1
 BINARY_ENVELOPE_VERSION_2 = 2
 HEADER_LEN = 5
@@ -108,7 +110,7 @@ def _pack_preset_dict(name: str, preset: Dict[str, Any]) -> bytes:
     n3 = _clamp_i16(preset.get("n3", 0))
     n4 = _clamp_i16(preset.get("n4", 0))
     n5 = _clamp_i16(preset.get("n5", 0))
-    n6 = _clamp_i16(preset.get("n6", 0))
+    n6 = _clamp_i16(wire_n6(preset))
     parts.append(
         struct.pack(
             "<HBBhhhhhh",

src/util/espnow_message.py

@@ -113,6 +113,21 @@ def resolve_preset_background_hex(preset_data, palette_colors=None):
     return _hex_from_background_raw(bg_raw)
 
 
+def wire_n6(preset_data, default=0):
+    """Resolve style mode for the wire (``n6``); preset may store ``mode`` or ``n6``."""
+    if not isinstance(preset_data, dict):
+        return default
+    if preset_data.get("mode") is not None:
+        try:
+            return max(0, int(preset_data["mode"]))
+        except (TypeError, ValueError):
+            pass
+    try:
+        return max(0, int(preset_data.get("n6", default) or 0))
+    except (TypeError, ValueError):
+        return default
+
+
 def build_preset_dict(preset_data, palette_colors=None):
     """
     Convert preset data to API-compliant format.
@@ -188,7 +203,7 @@ def build_preset_dict(preset_data, palette_colors=None):
         "n3": preset_data.get("n3", 0),
         "n4": preset_data.get("n4", 0),
         "n5": preset_data.get("n5", 0),
-        "n6": preset_data.get("n6", 0)
+        "n6": wire_n6(preset_data),
     }
     
     return preset

src/util/profile_bundle.py

@@ -0,0 +1,441 @@
+"""Export/import profile bundles (profile, zones, presets, sequences, palette)."""
+
+from __future__ import annotations
+
+import copy
+from typing import Any, Callable, Dict, List, Optional, Set, Tuple
+
+BUNDLE_VERSION = 1
+KIND_PROFILE = "profile"
+KIND_PRESET = "preset"
+KIND_SEQUENCE = "sequence"
+
+
+def _allocate_id(model, cache: Dict[str, int]) -> str:
+    if "next" not in cache:
+        max_id = max((int(k) for k in model.keys() if str(k).isdigit()), default=0)
+        cache["next"] = max_id + 1
+    next_id = str(cache["next"])
+    cache["next"] += 1
+    return next_id
+
+
+def _palette_colors(palette_model, palette_id) -> List:
+    if not palette_id:
+        return []
+    try:
+        colors = palette_model.read(str(palette_id))
+    except Exception:
+        colors = None
+    if isinstance(colors, list):
+        return list(colors)
+    if isinstance(colors, dict) and isinstance(colors.get("colors"), list):
+        return list(colors["colors"])
+    return []
+
+
+def _walk_preset_refs(value, out: Set[str]) -> None:
+    if isinstance(value, list):
+        for item in value:
+            _walk_preset_refs(item, out)
+    elif value is not None and value != "":
+        out.add(str(value))
+
+
+def _preset_ids_in_zone(zone: Dict[str, Any]) -> Set[str]:
+    ids: Set[str] = set()
+    if not isinstance(zone, dict):
+        return ids
+    _walk_preset_refs(zone.get("presets"), ids)
+    _walk_preset_refs(zone.get("presets_flat"), ids)
+    if zone.get("default_preset") not in (None, ""):
+        ids.add(str(zone["default_preset"]))
+    return ids
+
+
+def _preset_ids_in_sequence(seq: Dict[str, Any]) -> Set[str]:
+    ids: Set[str] = set()
+    if not isinstance(seq, dict):
+        return ids
+    for lane in seq.get("lanes") or []:
+        if not isinstance(lane, list):
+            continue
+        for step in lane:
+            if isinstance(step, dict) and step.get("preset_id") not in (None, ""):
+                ids.add(str(step["preset_id"]))
+    for step in seq.get("steps") or []:
+        if isinstance(step, dict) and step.get("preset_id") not in (None, ""):
+            ids.add(str(step["preset_id"]))
+    return ids
+
+
+def _map_preset_container(
+    value,
+    id_map: Dict[str, str],
+    preset_cache: Dict[str, int],
+    new_profile_id: str,
+    new_presets: Dict[str, Dict[str, Any]],
+    presets_model,
+) -> Any:
+    if isinstance(value, list):
+        return [
+            _map_preset_container(v, id_map, preset_cache, new_profile_id, new_presets, presets_model)
+            for v in value
+        ]
+    if value is None:
+        return None
+    preset_id = str(value)
+    if preset_id in id_map:
+        return id_map[preset_id]
+    preset_data = presets_model.read(preset_id)
+    if not preset_data:
+        return None
+    new_preset_id = _allocate_id(presets_model, preset_cache)
+    clone_data = dict(preset_data)
+    clone_data["profile_id"] = str(new_profile_id)
+    new_presets[new_preset_id] = clone_data
+    id_map[preset_id] = new_preset_id
+    return new_preset_id
+
+
+def _map_sequence_lanes(
+    seq: Dict[str, Any],
+    preset_id_map: Dict[str, str],
+) -> Dict[str, Any]:
+    out = copy.deepcopy(seq)
+    lanes = out.get("lanes")
+    if isinstance(lanes, list):
+        for lane in lanes:
+            if not isinstance(lane, list):
+                continue
+            for step in lane:
+                if not isinstance(step, dict):
+                    continue
+                pid = step.get("preset_id")
+                if pid is not None and str(pid) in preset_id_map:
+                    step["preset_id"] = preset_id_map[str(pid)]
+    steps = out.get("steps")
+    if isinstance(steps, list):
+        for step in steps:
+            if not isinstance(step, dict):
+                continue
+            pid = step.get("preset_id")
+            if pid is not None and str(pid) in preset_id_map:
+                step["preset_id"] = preset_id_map[str(pid)]
+    return out
+
+
+def export_profile_bundle(
+    profile_id: str,
+    profiles_model,
+    zones_model,
+    presets_model,
+    sequences_model,
+    palette_model,
+) -> Dict[str, Any]:
+    source = profiles_model.read(profile_id)
+    if not source:
+        raise ValueError("Profile not found")
+
+    zone_ids = source.get("zones")
+    if not isinstance(zone_ids, list) or not zone_ids:
+        zone_ids = source.get("zone_order") or []
+    zone_ids = [str(z) for z in zone_ids if z is not None]
+
+    zones_out: Dict[str, Any] = {}
+    preset_ids: Set[str] = set()
+    sequence_ids: Set[str] = set()
+
+    for zid in zone_ids:
+        zone = zones_model.read(zid)
+        if not zone:
+            continue
+        zones_out[zid] = copy.deepcopy(zone)
+        preset_ids |= _preset_ids_in_zone(zone)
+        for sid in zone.get("sequence_ids") or []:
+            if sid is not None and str(sid).strip():
+                sequence_ids.add(str(sid))
+
+    sequences_out: Dict[str, Any] = {}
+    for sid in sequence_ids:
+        seq = sequences_model.read(sid)
+        if not seq or str(seq.get("profile_id")) != str(profile_id):
+            continue
+        sequences_out[sid] = copy.deepcopy(seq)
+        preset_ids |= _preset_ids_in_sequence(seq)
+
+    presets_out: Dict[str, Any] = {}
+    for pid in preset_ids:
+        pdata = presets_model.read(pid)
+        if pdata and str(pdata.get("profile_id")) == str(profile_id):
+            presets_out[pid] = copy.deepcopy(pdata)
+
+    profile_doc = copy.deepcopy(source)
+    profile_doc.pop("palette", None)
+
+    return {
+        "version": BUNDLE_VERSION,
+        "kind": KIND_PROFILE,
+        "profile": profile_doc,
+        "palette": {"colors": _palette_colors(palette_model, source.get("palette_id"))},
+        "zones": zones_out,
+        "presets": presets_out,
+        "sequences": sequences_out,
+    }
+
+
+def import_profile_bundle(
+    bundle: Dict[str, Any],
+    profiles_model,
+    zones_model,
+    presets_model,
+    sequences_model,
+    palette_model,
+    *,
+    name: Optional[str] = None,
+) -> Tuple[str, Dict[str, Any]]:
+    if not isinstance(bundle, dict):
+        raise ValueError("Invalid bundle")
+    if bundle.get("version") not in (BUNDLE_VERSION, str(BUNDLE_VERSION)):
+        raise ValueError("Unsupported bundle version")
+    if bundle.get("kind") not in (KIND_PROFILE, None):
+        raise ValueError("Not a profile bundle")
+
+    source_profile = bundle.get("profile")
+    if not isinstance(source_profile, dict):
+        raise ValueError("Bundle missing profile")
+
+    source_name = source_profile.get("name") or "Imported profile"
+    new_name = (name or source_name).strip() or source_name
+    profile_type = source_profile.get("type", "zones")
+
+    profile_cache: Dict[str, int] = {}
+    palette_cache: Dict[str, int] = {}
+    zone_cache: Dict[str, int] = {}
+    preset_cache: Dict[str, int] = {}
+    sequence_cache: Dict[str, int] = {}
+
+    new_profile_id = _allocate_id(profiles_model, profile_cache)
+    new_palette_id = _allocate_id(palette_model, palette_cache)
+
+    palette_in = bundle.get("palette") or {}
+    palette_colors = palette_in.get("colors") if isinstance(palette_in, dict) else []
+    if not isinstance(palette_colors, list):
+        palette_colors = []
+
+    preset_id_map: Dict[str, str] = {}
+    new_presets: Dict[str, Dict[str, Any]] = {}
+    new_zones: Dict[str, Dict[str, Any]] = {}
+    new_sequences: Dict[str, Dict[str, Any]] = {}
+    sequence_id_map: Dict[str, str] = {}
+
+    zones_in = bundle.get("zones") if isinstance(bundle.get("zones"), dict) else {}
+    presets_in = bundle.get("presets") if isinstance(bundle.get("presets"), dict) else {}
+    sequences_in = bundle.get("sequences") if isinstance(bundle.get("sequences"), dict) else {}
+
+    for old_pid, pdata in presets_in.items():
+        if not isinstance(pdata, dict):
+            continue
+        new_pid = _allocate_id(presets_model, preset_cache)
+        clone = copy.deepcopy(pdata)
+        clone["profile_id"] = str(new_profile_id)
+        new_presets[new_pid] = clone
+        preset_id_map[str(old_pid)] = new_pid
+
+    for old_sid, sdata in sequences_in.items():
+        if not isinstance(sdata, dict):
+            continue
+        new_sid = _allocate_id(sequences_model, sequence_cache)
+        clone = _map_sequence_lanes(sdata, preset_id_map)
+        clone["profile_id"] = str(new_profile_id)
+        new_sequences[new_sid] = clone
+        sequence_id_map[str(old_sid)] = new_sid
+
+    source_zone_order = source_profile.get("zones")
+    if not isinstance(source_zone_order, list):
+        source_zone_order = list(zones_in.keys())
+
+    cloned_zone_ids: List[str] = []
+    for old_zid in source_zone_order:
+        zone = zones_in.get(str(old_zid))
+        if not isinstance(zone, dict):
+            continue
+        new_zid = _allocate_id(zones_model, zone_cache)
+        clone_data: Dict[str, Any] = {
+            "name": zone.get("name") or f"Zone {old_zid}",
+            "names": list(zone.get("names") or []),
+        }
+        mapped_presets = _map_preset_container(
+            zone.get("presets"),
+            preset_id_map,
+            preset_cache,
+            new_profile_id,
+            new_presets,
+            presets_model,
+        )
+        if mapped_presets is not None:
+            clone_data["presets"] = mapped_presets
+        extra = {
+            k: v
+            for k, v in zone.items()
+            if k not in ("name", "names", "presets")
+        }
+        if "presets_flat" in extra:
+            extra["presets_flat"] = _map_preset_container(
+                extra.get("presets_flat"),
+                preset_id_map,
+                preset_cache,
+                new_profile_id,
+                new_presets,
+                presets_model,
+            )
+        if "default_preset" in extra and extra["default_preset"] is not None:
+            old_dp = str(extra["default_preset"])
+            if old_dp in preset_id_map:
+                extra["default_preset"] = preset_id_map[old_dp]
+        if "sequence_ids" in extra and isinstance(extra.get("sequence_ids"), list):
+            extra["sequence_ids"] = [
+                sequence_id_map.get(str(s), str(s))
+                for s in extra["sequence_ids"]
+                if s is not None
+            ]
+        clone_data.update(extra)
+        new_zones[new_zid] = clone_data
+        cloned_zone_ids.append(new_zid)
+
+    new_profile_data = {
+        "name": new_name,
+        "type": profile_type,
+        "zones": cloned_zone_ids,
+        "scenes": list(source_profile.get("scenes", []))
+        if isinstance(source_profile.get("scenes"), list)
+        else [],
+        "palette_id": str(new_palette_id),
+    }
+
+    palette_model[str(new_palette_id)] = list(palette_colors)
+    for pid, pdata in new_presets.items():
+        presets_model[pid] = pdata
+    for zid, zdata in new_zones.items():
+        zones_model[zid] = zdata
+    for sid, sdata in new_sequences.items():
+        sequences_model[sid] = sdata
+    profiles_model[str(new_profile_id)] = new_profile_data
+
+    palette_model.save()
+    presets_model.save()
+    zones_model.save()
+    sequences_model.save()
+    profiles_model.save()
+
+    return str(new_profile_id), new_profile_data
+
+
+def export_preset_bundle(preset_id: str, presets_model) -> Dict[str, Any]:
+    preset = presets_model.read(preset_id)
+    if not preset:
+        raise ValueError("Preset not found")
+    return {
+        "version": BUNDLE_VERSION,
+        "kind": KIND_PRESET,
+        "preset": copy.deepcopy(preset),
+    }
+
+
+def import_preset_bundle(
+    bundle: Dict[str, Any],
+    presets_model,
+    profile_id: str,
+) -> Tuple[str, Dict[str, Any]]:
+    if not isinstance(bundle, dict):
+        raise ValueError("Invalid bundle")
+    if bundle.get("kind") != KIND_PRESET:
+        raise ValueError("Not a preset bundle")
+    preset = bundle.get("preset")
+    if not isinstance(preset, dict):
+        raise ValueError("Bundle missing preset")
+    new_id = presets_model.create(profile_id)
+    data = copy.deepcopy(preset)
+    data["profile_id"] = str(profile_id)
+    presets_model.update(new_id, data)
+    return str(new_id), presets_model.read(new_id) or data
+
+
+def export_sequence_bundle(
+    sequence_id: str,
+    sequences_model,
+    presets_model,
+    *,
+    profile_id: Optional[str] = None,
+) -> Dict[str, Any]:
+    seq = sequences_model.read(sequence_id)
+    if not seq:
+        raise ValueError("Sequence not found")
+    if profile_id is not None and str(seq.get("profile_id")) != str(profile_id):
+        raise ValueError("Sequence not found")
+
+    pid = str(profile_id or seq.get("profile_id") or "")
+    preset_ids = _preset_ids_in_sequence(seq)
+    presets_out: Dict[str, Any] = {}
+    for old_pid in preset_ids:
+        pdata = presets_model.read(old_pid)
+        if pdata and (not pid or str(pdata.get("profile_id")) == pid):
+            presets_out[old_pid] = copy.deepcopy(pdata)
+
+    return {
+        "version": BUNDLE_VERSION,
+        "kind": KIND_SEQUENCE,
+        "sequence": copy.deepcopy(seq),
+        "presets": presets_out,
+    }
+
+
+def import_sequence_bundle(
+    bundle: Dict[str, Any],
+    sequences_model,
+    presets_model,
+    profile_id: str,
+) -> Tuple[str, Dict[str, Any]]:
+    if not isinstance(bundle, dict):
+        raise ValueError("Invalid bundle")
+    if bundle.get("kind") != KIND_SEQUENCE:
+        raise ValueError("Not a sequence bundle")
+    seq = bundle.get("sequence")
+    if not isinstance(seq, dict):
+        raise ValueError("Bundle missing sequence")
+
+    preset_cache: Dict[str, int] = {}
+    preset_id_map: Dict[str, str] = {}
+    new_presets: Dict[str, Dict[str, Any]] = {}
+    presets_in = bundle.get("presets") if isinstance(bundle.get("presets"), dict) else {}
+
+    for old_pid, pdata in presets_in.items():
+        if not isinstance(pdata, dict):
+            continue
+        new_pid = _allocate_id(presets_model, preset_cache)
+        clone = copy.deepcopy(pdata)
+        clone["profile_id"] = str(profile_id)
+        new_presets[new_pid] = clone
+        preset_id_map[str(old_pid)] = new_pid
+
+    for old_pid in _preset_ids_in_sequence(seq):
+        op = str(old_pid)
+        if op not in preset_id_map:
+            pdata = presets_model.read(op)
+            if pdata:
+                new_pid = _allocate_id(presets_model, preset_cache)
+                clone = copy.deepcopy(pdata)
+                clone["profile_id"] = str(profile_id)
+                new_presets[new_pid] = clone
+                preset_id_map[op] = new_pid
+
+    for pid, pdata in new_presets.items():
+        presets_model[pid] = pdata
+    if new_presets:
+        presets_model.save()
+
+    new_seq_id = sequences_model.create(profile_id)
+    mapped = _map_sequence_lanes(seq, preset_id_map)
+    mapped["profile_id"] = str(profile_id)
+    sequences_model.update(new_seq_id, mapped)
+    return str(new_seq_id), sequences_model.read(new_seq_id) or mapped

src/util/sequence_playback.py

@@ -24,6 +24,16 @@ _sim_beat_token = 0
 _beat_run: Optional[Dict[str, Any]] = None
 _beat_run_lock = threading.Lock()
 
+_pending_play: Optional[Dict[str, Any]] = None
+_pending_play_lock = threading.Lock()
+_pending_beat_task: Optional[asyncio.Task] = None
+_pending_beat_token = 0
+_last_thread_beat_phase: Dict[str, Any] = {
+    "is_downbeat": True,
+    "bar_beat": 1,
+}
+_sim_beat_counter = 0
+
 
 def _norm_mac(raw: Any) -> Optional[str]:
     from models.device import normalize_mac
@@ -68,8 +78,13 @@ def _normalize_sequence_lanes(doc: Dict[str, Any]) -> List[List[Dict[str, Any]]]
 
 
 def _group_ids_for_lane_step(
-    sequence_doc: Dict[str, Any], step: Dict[str, Any], lane_index: int, num_lanes: int
+    sequence_doc: Dict[str, Any],
+    step: Dict[str, Any],
+    lane_index: int,
+    num_lanes: int,
+    zone_doc: Optional[Dict[str, Any]] = None,
 ) -> List[str]:
+    _ = zone_doc
     lgs = sequence_doc.get("lanes_group_ids")
     if isinstance(lgs, list) and lane_index < len(lgs):
         for_lane = lgs[lane_index]
@@ -224,7 +239,7 @@ def _resolve_step_device_names(
 ) -> List[str]:
     z_names, z_macs = _compute_zone_targets(zone_doc, devices, groups)
     if not step_group_ids:
-        return list(z_names)
+        return []
     zone_mac_set = {m for m in (_norm_mac(x) for x in z_macs) if m}
     zone_name_by_mac: Dict[str, str] = {}
     for i, m in enumerate(z_macs):
@@ -263,12 +278,29 @@ def _lane_has_non_empty_lanes_group_ids(sequence_doc: Dict[str, Any], lane_index
     return any(x is not None and str(x).strip() for x in for_lane)
 
 
+def _partition_devices_for_lane(
+    num_lanes: int,
+    *,
+    lane_has_own_groups: bool,
+    step_group_ids: List[str],
+) -> bool:
+    """Split zone devices across lanes only when lanes lack explicit group targeting."""
+    if num_lanes <= 1:
+        return False
+    if lane_has_own_groups:
+        return False
+    # No lane groups (whole zone): every lane uses all zone / zone-group devices.
+    if not step_group_ids:
+        return False
+    return False
+
+
 def _split_device_names_for_lane(
     all_names: List[str],
     lane_index: int,
     num_lanes: int,
     *,
-    partition_shared_zone: bool = True,
+    partition_shared_zone: bool = False,
 ) -> List[str]:
     names = [n for n in all_names if n and str(n).strip()]
     if num_lanes <= 1 or not partition_shared_zone:
@@ -299,21 +331,6 @@ def _resolve_colors_with_palette_refs(
     return out
 
 
-def _ordered_unique_preset_ids_from_lanes(lanes: List[List[Dict[str, Any]]]) -> List[str]:
-    seen: set = set()
-    out: List[str] = []
-    for lane in lanes:
-        for step in lane:
-            if not isinstance(step, dict):
-                continue
-            pid = str(step.get("preset_id") or "").strip()
-            if not pid or pid in seen:
-                continue
-            seen.add(pid)
-            out.append(pid)
-    return out
-
-
 def _display_preset_for_step(
     preset_id: str,
     presets_map: Dict[str, Any],
@@ -348,6 +365,134 @@ def _preset_inner_from_display_preset(display_preset: Dict[str, Any]) -> Dict[st
     return inner
 
 
+def _ordered_unique_preset_ids_in_lane(lane: List[Dict[str, Any]]) -> List[str]:
+    seen: set = set()
+    out: List[str] = []
+    for step in lane:
+        if not isinstance(step, dict):
+            continue
+        pid = str(step.get("preset_id") or "").strip()
+        if not pid or pid in seen:
+            continue
+        seen.add(pid)
+        out.append(pid)
+    return out
+
+
+def _resolve_lane_device_names(lane_index: int, ctx: Dict[str, Any]) -> List[str]:
+    """Device names for one lane (lane groups / whole zone), after lane partition."""
+    lanes: List[List[Dict[str, Any]]] = ctx["lanes"]
+    sequence_doc: Dict[str, Any] = ctx["sequence_doc"]
+    zone_doc: Dict[str, Any] = ctx["zone_doc"]
+    devices = ctx["devices"]
+    groups = ctx["groups"]
+    num_lanes = int(ctx["num_lanes"])
+    lane = lanes[lane_index] if 0 <= lane_index < len(lanes) else []
+    if not lane:
+        return []
+    gids = _group_ids_for_lane_step(
+        sequence_doc, lane[0], lane_index, num_lanes, zone_doc=zone_doc
+    )
+    device_names = _resolve_step_device_names(
+        zone_doc, gids, devices, groups, sequence_doc=sequence_doc
+    )
+    lane_own = _lane_has_non_empty_lanes_group_ids(sequence_doc, lane_index)
+    return _split_device_names_for_lane(
+        device_names,
+        lane_index,
+        num_lanes,
+        partition_shared_zone=_partition_devices_for_lane(
+            num_lanes, lane_has_own_groups=lane_own, step_group_ids=gids
+        ),
+    )
+
+
+def _build_lane_wire_presets_map(lane_index: int, ctx: Dict[str, Any]) -> Dict[str, Any]:
+    """All preset wire bodies for one lane, keyed by preset id."""
+    lanes: List[List[Dict[str, Any]]] = ctx["lanes"]
+    presets_map: Dict[str, Any] = ctx["presets_map"]
+    palette_colors: List[Any] = ctx["palette_colors"]
+    lane = lanes[lane_index] if 0 <= lane_index < len(lanes) else []
+    inner_by_wire: Dict[str, Any] = {}
+    for pid in _ordered_unique_preset_ids_in_lane(lane):
+        disp = _display_preset_for_step(pid, presets_map, palette_colors)
+        if not disp:
+            continue
+        inner_by_wire[str(pid)] = _preset_inner_from_display_preset(disp)
+    return inner_by_wire
+
+
+async def _prime_lane(lane_index: int, ctx: Dict[str, Any]) -> None:
+    """Upload all lane presets and select step 0 in one message (driver applies presets before select)."""
+    from models.transport import get_current_sender
+    from util.beat_driver_route import (
+        clear_sequence_manual_lane_route,
+        mark_sequence_manual_lane_select_sent,
+        set_sequence_manual_lane_route,
+    )
+    from util.driver_delivery import deliver_json_messages
+
+    lanes: List[List[Dict[str, Any]]] = ctx["lanes"]
+    presets_map: Dict[str, Any] = ctx["presets_map"]
+    palette_colors: List[Any] = ctx["palette_colors"]
+    lane_steps = lanes[lane_index] if 0 <= lane_index < len(lanes) else []
+    if not lane_steps:
+        return
+
+    inner_by_wire = _build_lane_wire_presets_map(lane_index, ctx)
+    if not inner_by_wire:
+        return
+
+    step0 = lane_steps[0]
+    preset_id = str(step0.get("preset_id") or "").strip()
+    if not preset_id:
+        return
+    display_preset = _display_preset_for_step(preset_id, presets_map, palette_colors)
+    if not display_preset:
+        return
+
+    device_names = _resolve_lane_device_names(lane_index, ctx)
+    macs = _device_names_to_macs(device_names, ctx["devices"])
+    if not macs:
+        return
+
+    sender = get_current_sender()
+    if not sender:
+        raise RuntimeError("Transport not configured")
+
+    zone_doc = ctx.get("zone_doc") if isinstance(ctx.get("zone_doc"), dict) else {}
+    devices_model = ctx["devices"]
+    wire = str(preset_id)
+    auto = _coerce_auto(display_preset)
+    sel: Dict[str, Any] = {}
+    for n in device_names:
+        if n:
+            sel[str(n)] = [wire]
+
+    delay_s = 0.05
+    for mac in macs:
+        body: Dict[str, Any] = {"v": "1", "presets": dict(inner_by_wire)}
+        if sel:
+            body["select"] = sel
+        msg = json.dumps(body, separators=(",", ":"))
+        await deliver_json_messages(sender, [msg], [mac], devices_model, delay_s=delay_s)
+
+    if auto:
+        clear_sequence_manual_lane_route(lane_index)
+    else:
+        inner = _preset_inner_from_display_preset(display_preset)
+        set_sequence_manual_lane_route(lane_index, device_names, wire, inner)
+        mark_sequence_manual_lane_select_sent(lane_index)
+
+
+async def _prime_all_lanes(ctx: Dict[str, Any]) -> None:
+    """One-shot preset upload + first-step select per lane (to each lane's groups)."""
+    for i in range(int(ctx["num_lanes"])):
+        await _prime_lane(i, ctx)
+    ctx["_presets_delivered"] = True
+    ctx["_sequence_primed"] = True
+
+
 def _parse_zone_brightness_value(zone_doc: Any) -> int:
     """Zone slider value stored on the zone row (0–255); default 255 if unset."""
     from util.brightness_combine import clamp255
@@ -363,37 +508,33 @@ def _parse_zone_brightness_value(zone_doc: Any) -> int:
         return 255
 
 
-def _inner_wire_b_with_sequence_zone_brightness(
+async def _deliver_zone_brightness_for_sequence(ctx: Dict[str, Any]) -> None:
-    inner: Dict[str, Any],
+    """Apply zone/global/group/device brightness like the zone slider (not inside preset ``b``)."""
-    zone_doc: Dict[str, Any],
+    from models.transport import get_current_sender
-    *,
+    from util.brightness_combine import effective_brightness_for_mac
-    target_mac: Optional[str],
+    from util.driver_delivery import deliver_json_messages
-    settings_obj: Any,
-    groups_model: Any,
-    devices_model: Any,
-) -> Dict[str, Any]:
-    """Combine preset wire ``b`` with zone brightness (and global/group/device when ``target_mac`` is set)."""
-    from util.brightness_combine import (
-        clamp255,
-        multiply_brightness_factors,
-        effective_brightness_for_mac,
-    )
 
-    out = dict(inner)
+    sender = get_current_sender()
-    base = clamp255(out.get("b", 127))
+    if not sender:
+        return
+    macs = _union_macs_for_sequence(ctx)
+    if not macs:
+        return
+    zone_doc = ctx.get("zone_doc") if isinstance(ctx.get("zone_doc"), dict) else {}
     zb = _parse_zone_brightness_value(zone_doc)
-    if target_mac and settings_obj is not None and groups_model is not None and devices_model is not None:
+    settings_obj = ctx.get("settings")
+    groups_model = ctx.get("groups")
+    devices_model = ctx.get("devices")
+    for mac in macs:
         eff = effective_brightness_for_mac(
             settings_obj,
             groups_model,
             devices_model,
-            target_mac,
+            mac,
             zone_brightness=zb,
         )
-        out["b"] = multiply_brightness_factors([base, eff])
+        msg = json.dumps({"v": "1", "b": eff, "save": True}, separators=(",", ":"))
-    else:
+        await deliver_json_messages(sender, [msg], [mac], devices_model, delay_s=0.05)
-        out["b"] = multiply_brightness_factors([base, zb])
-    return out
 
 
 def _device_names_to_macs(device_names: List[str], devices: Any) -> List[str]:
@@ -431,16 +572,19 @@ def _union_macs_for_sequence(ctx: Dict[str, Any]) -> List[str]:
         for step in lane:
             if not isinstance(step, dict):
                 continue
-            gids = _group_ids_for_lane_step(sequence_doc, step, lane_index, num_lanes)
+            gids = _group_ids_for_lane_step(
+                sequence_doc, step, lane_index, num_lanes, zone_doc=zone_doc
+            )
             device_names = _resolve_step_device_names(
                 zone_doc, gids, devices, groups, sequence_doc=sequence_doc
             )
+            lane_own = _lane_has_non_empty_lanes_group_ids(sequence_doc, lane_index)
             device_names = _split_device_names_for_lane(
                 device_names,
                 lane_index,
                 num_lanes,
-                partition_shared_zone=not _lane_has_non_empty_lanes_group_ids(
+                partition_shared_zone=_partition_devices_for_lane(
-                    sequence_doc, lane_index
+                    num_lanes, lane_has_own_groups=lane_own, step_group_ids=gids
                 ),
             )
             if gids and not device_names:
@@ -449,58 +593,24 @@ def _union_macs_for_sequence(ctx: Dict[str, Any]) -> List[str]:
                 if m and m not in seen:
                     seen.add(m)
                     out.append(m)
-    if out:
     return out
-    _, z_macs = _compute_zone_targets(zone_doc, devices, groups)
-    return list(z_macs)
 
 
-def _build_sequence_wire_presets_map(ctx: Dict[str, Any]) -> Dict[str, Any]:
+def _coerce_loop(sequence_doc: Dict[str, Any]) -> bool:
-    lanes: List[List[Dict[str, Any]]] = ctx["lanes"]
+    raw = sequence_doc.get("loop", sequence_doc.get("sequence_loop", True))
-    presets_map: Dict[str, Any] = ctx["presets_map"]
+    if isinstance(raw, bool):
-    palette_colors: List[Any] = ctx["palette_colors"]
+        return raw
-    inner_by_wire: Dict[str, Any] = {}
+    if raw is None:
-    for pid in _ordered_unique_preset_ids_from_lanes(lanes):
+        return True
-        disp = _display_preset_for_step(pid, presets_map, palette_colors)
+    if isinstance(raw, int):
-        if not disp:
+        return raw != 0
-            continue
+    if isinstance(raw, str):
-        inner_by_wire[str(pid)] = _preset_inner_from_display_preset(disp)
+        lo = raw.strip().lower()
-    return inner_by_wire
+        if lo in ("false", "0", "no", "off"):
-
+            return False
-
+        if lo in ("true", "1", "yes", "on"):
-async def _deliver_sequence_presets_bulk(ctx: Dict[str, Any]) -> None:
+            return True
-    """Push all preset definitions used in the sequence once; step advances use select (auto) only."""
+    return True
-    from models.transport import get_current_sender
-    from util.driver_delivery import deliver_json_messages
-
-    inner_by_wire = _build_sequence_wire_presets_map(ctx)
-    ctx["_sequence_wire_presets"] = inner_by_wire
-    if not inner_by_wire:
-        return
-    sender = get_current_sender()
-    if not sender:
-        raise RuntimeError("Transport not configured")
-    macs = _union_macs_for_sequence(ctx)
-    if not macs:
-        return
-    zone_doc = ctx.get("zone_doc") if isinstance(ctx.get("zone_doc"), dict) else {}
-    settings_obj = ctx.get("settings")
-    groups_model = ctx.get("groups")
-    devices_model = ctx.get("devices")
-    delay_s = 0.05
-    for mac in macs:
-        adjusted: Dict[str, Any] = {}
-        for wire_pid, inner in inner_by_wire.items():
-            adjusted[wire_pid] = _inner_wire_b_with_sequence_zone_brightness(
-                inner,
-                zone_doc,
-                target_mac=mac,
-                settings_obj=settings_obj,
-                groups_model=groups_model,
-                devices_model=devices_model,
-            )
-        msg = json.dumps({"v": "1", "presets": adjusted}, separators=(",", ":"))
-        await deliver_json_messages(sender, [msg], [mac], devices_model, delay_s=delay_s)
 
 
 def _coerce_auto(preset: Dict[str, Any]) -> bool:
@@ -533,119 +643,17 @@ def _load_palette_colors(profile_id: str) -> List[Any]:
     return Palette().read(str(pid)) or []
 
 
-async def _deliver_preset_for_devices(
-    preset_id: str,
-    preset_doc: Dict[str, Any],
-    device_names: List[str],
-    devices: Any,
-    *,
-    lane_index: Optional[int] = None,
-    zone_doc: Optional[Dict[str, Any]] = None,
-    settings_obj: Any = None,
-    groups_model: Any = None,
-) -> None:
-    from models.transport import get_current_sender
-    from util.driver_delivery import deliver_json_messages
-    from util.beat_driver_route import sync_beat_route_from_push_sequence
-    from util.espnow_message import build_preset_dict
-
-    sender = get_current_sender()
-    if not sender:
-        raise RuntimeError("Transport not configured")
-
-    macs: List[str] = []
-    seen: set = set()
-    for nm in device_names:
-        key = str(nm).strip()
-        if not key:
-            continue
-        m = None
-        for did in devices.list():
-            doc = devices.read(did) or {}
-            if str(doc.get("name") or "").strip() == key:
-                m = _norm_mac(did)
-                break
-        if not m and key.startswith("led-"):
-            m = _norm_mac(key[4:])
-        if m and m not in seen:
-            seen.add(m)
-            macs.append(m)
-    if not macs:
-        return
-
-    body = dict(preset_doc)
-    auto = _coerce_auto(body)
-    inner_base = build_preset_dict(body)
-    mb = body.get("manual_beat_n", body.get("manualBeatN"))
-    if mb is not None:
-        try:
-            n = int(mb)
-            if 1 <= n <= 64:
-                inner_base["manual_beat_n"] = n
-        except (TypeError, ValueError):
-            pass
-    wire = str(preset_id)
-    zone_use = zone_doc if isinstance(zone_doc, dict) else {}
-
-    sel_append: Optional[Dict[str, Any]] = None
-    if auto and device_names:
-        sel: Dict[str, Any] = {}
-        for n in device_names:
-            if n:
-                sel[str(n)] = [wire]
-        if sel:
-            sel_append = {"v": "1", "select": sel}
-
-    for mac in macs:
-        inner = _inner_wire_b_with_sequence_zone_brightness(
-            inner_base,
-            zone_use,
-            target_mac=mac,
-            settings_obj=settings_obj,
-            groups_model=groups_model,
-            devices_model=devices,
-        )
-        seq_list: List[Dict[str, Any]] = [{"v": "1", "presets": {wire: inner}}]
-        if sel_append:
-            seq_list.append(dict(sel_append))
-        messages = [json.dumps(x, separators=(",", ":")) for x in seq_list]
-        await deliver_json_messages(sender, messages, [mac], devices, delay_s=0.05)
-
-    if not auto:
-        manual_inner = _inner_wire_b_with_sequence_zone_brightness(
-            inner_base,
-            zone_use,
-            target_mac=macs[0] if len(macs) == 1 else None,
-            settings_obj=settings_obj,
-            groups_model=groups_model,
-            devices_model=devices,
-        )
-        if lane_index is not None:
-            from util.beat_driver_route import set_sequence_manual_lane_route
-
-            set_sequence_manual_lane_route(lane_index, device_names, wire, manual_inner)
-        else:
-            seq_one = [{"v": "1", "presets": {wire: manual_inner}}]
-            if sel_append:
-                seq_one.append(dict(sel_append))
-            sync_beat_route_from_push_sequence(
-                seq_one, target_macs=macs, preserve_parallel_lane_routes=True
-            )
-
-
 async def _send_lane(
     lane_index: int,
     st: Dict[str, Any],
     ctx: Dict[str, Any],
 ) -> None:
+    """Apply the current step (select or manual route). Presets must already be on devices."""
     lanes: List[List[Dict[str, Any]]] = ctx["lanes"]
     sequence_doc: Dict[str, Any] = ctx["sequence_doc"]
     presets_map: Dict[str, Any] = ctx["presets_map"]
-    zone_doc: Dict[str, Any] = ctx["zone_doc"]
-    devices = ctx["devices"]
-    groups = ctx["groups"]
     palette_colors: List[Any] = ctx["palette_colors"]
-    num_lanes = ctx["num_lanes"]
+    devices = ctx["devices"]
 
     if st.get("done"):
         return
@@ -660,15 +668,22 @@ async def _send_lane(
     display_preset = _display_preset_for_step(preset_id, presets_map, palette_colors)
     if not display_preset:
         return
-    gids = _group_ids_for_lane_step(sequence_doc, step, lane_index, num_lanes)
+    num_lanes = int(ctx["num_lanes"])
-    device_names = _resolve_step_device_names(
+    zone_doc = ctx["zone_doc"]
-        zone_doc, gids, devices, groups, sequence_doc=sequence_doc
+    gids = _group_ids_for_lane_step(
+        sequence_doc, step, lane_index, num_lanes, zone_doc=zone_doc
     )
+    device_names = _resolve_step_device_names(
+        zone_doc, gids, devices, ctx["groups"], sequence_doc=sequence_doc
+    )
+    lane_own = _lane_has_non_empty_lanes_group_ids(sequence_doc, lane_index)
     device_names = _split_device_names_for_lane(
         device_names,
         lane_index,
         num_lanes,
-        partition_shared_zone=not _lane_has_non_empty_lanes_group_ids(sequence_doc, lane_index),
+        partition_shared_zone=_partition_devices_for_lane(
+            num_lanes, lane_has_own_groups=lane_own, step_group_ids=gids
+        ),
     )
     if gids and not device_names:
         return
@@ -676,6 +691,7 @@ async def _send_lane(
     from models.transport import get_current_sender
     from util.beat_driver_route import (
         clear_sequence_manual_lane_route,
+        mark_sequence_manual_lane_select_sent,
         set_sequence_manual_lane_route,
     )
     from util.driver_delivery import deliver_json_messages
@@ -688,20 +704,8 @@ async def _send_lane(
     if not macs:
         return
 
-    bulk = ctx.get("_sequence_wire_presets")
-    if isinstance(bulk, dict) and bulk:
-        auto = _coerce_auto(display_preset)
-        inner = _preset_inner_from_display_preset(display_preset)
-        zone_use = ctx.get("zone_doc") if isinstance(ctx.get("zone_doc"), dict) else {}
-        inner = _inner_wire_b_with_sequence_zone_brightness(
-            inner,
-            zone_use,
-            target_mac=macs[0] if len(macs) == 1 else None,
-            settings_obj=ctx.get("settings"),
-            groups_model=ctx.get("groups"),
-            devices_model=devices,
-        )
     wire = str(preset_id)
+    auto = _coerce_auto(display_preset)
     if auto:
         clear_sequence_manual_lane_route(lane_index)
         sel: Dict[str, Any] = {}
@@ -713,19 +717,16 @@ async def _send_lane(
         msg = json.dumps({"v": "1", "select": sel}, separators=(",", ":"))
         await deliver_json_messages(sender, [msg], macs, devices, delay_s=0.05)
     else:
+        inner = _preset_inner_from_display_preset(display_preset)
         set_sequence_manual_lane_route(lane_index, device_names, wire, inner)
-        return
+        sel: Dict[str, Any] = {}
-
+        for n in device_names:
-    await _deliver_preset_for_devices(
+            if n:
-        preset_id,
+                sel[str(n)] = [wire]
-        display_preset,
+        if sel:
-        device_names,
+            msg = json.dumps({"v": "1", "select": sel}, separators=(",", ":"))
-        devices,
+            await deliver_json_messages(sender, [msg], macs, devices, delay_s=0.05)
-        lane_index=lane_index,
+            mark_sequence_manual_lane_select_sent(lane_index)
-        zone_doc=zone_doc,
-        settings_obj=ctx.get("settings"),
-        groups_model=groups,
-    )
 
 
 async def _send_all_lanes(ctx: Dict[str, Any]) -> None:
@@ -745,7 +746,7 @@ def _build_ctx(
 ) -> Optional[Dict[str, Any]]:
     from models.device import Device
     from models.group import Group
-    from settings import Settings
+    from settings import get_settings
 
     lanes = [x for x in _normalize_sequence_lanes(sequence_doc) if len(x) > 0]
     if not lanes:
@@ -764,9 +765,9 @@ def _build_ctx(
         "presets_map": presets_map,
         "devices": devices,
         "groups": groups,
-        "settings": Settings(),
+        "settings": get_settings(),
         "palette_colors": palette_colors,
-        "loop": True,
+        "loop": _coerce_loop(sequence_doc),
         "advance_mode": "beats",
     }
 
@@ -897,7 +898,294 @@ async def process_active_beat_advance() -> None:
     else:
         ctx["sequence_loop_beat"] = int(ctx.get("sequence_loop_beat", 0)) + 1
     if all(s.get("done") for s in lane_states):
-        stop()
+        await stop_playback(clear_devices=True)
+        return
+
+
+async def _clear_devices_after_sequence(ctx: Dict[str, Any]) -> None:
+    """Stop beat routing and clear driver presets for devices used by this sequence run."""
+    from models.transport import get_current_sender
+    from util.beat_driver_route import clear_sequence_manual_lane_route, update_beat_route
+    from util.driver_delivery import deliver_json_messages
+
+    num_lanes = int(ctx.get("num_lanes") or 0)
+    for i in range(num_lanes):
+        clear_sequence_manual_lane_route(i)
+    update_beat_route({"enabled": False})
+
+    sender = get_current_sender()
+    if not sender:
+        return
+    devices = ctx.get("devices")
+    macs = _union_macs_for_sequence(ctx)
+    if not macs:
+        return
+    msg = json.dumps({"v": "1", "clear_presets": True, "save": True}, separators=(",", ":"))
+    await deliver_json_messages(sender, [msg], macs, devices, delay_s=0.05)
+
+
+def _halt_playback_state() -> Optional[Dict[str, Any]]:
+    """Drop active run state and cancel simulated beats; return the previous ctx."""
+    global _beat_run, _sim_beat_task, _sim_beat_token
+    ctx: Optional[Dict[str, Any]] = None
+    with _beat_run_lock:
+        ctx = _beat_run
+        _beat_run = None
+        _sim_beat_token += 1
+    st = _sim_beat_task
+    _sim_beat_task = None
+    if st and not st.done():
+        st.cancel()
+    return ctx
+
+
+async def stop_playback(*, clear_devices: bool = True) -> None:
+    """Stop sequence playback; optionally clear presets on targeted devices."""
+    clear_pending_play()
+    ctx = _halt_playback_state()
+    if clear_devices and ctx:
+        await _clear_devices_after_sequence(ctx)
+
+
+def apply_beat_phase_sync(ctx: Dict[str, Any], mode: str) -> Tuple[bool, bool]:
+    """Align beat counters to music.
+
+    ``step`` (default): beat 1 of the current step on the next counted beat.
+    ``pass``: restart from step 1 of the sequence pass and re-apply presets.
+
+    Returns ``(ok, resend_lanes)`` — caller should ``await _send_all_lanes(ctx)`` when resend is true.
+    """
+    if not ctx:
+        return False, False
+    mode_norm = str(mode or "step").strip().lower()
+    lane_states: List[Dict[str, Any]] = ctx.get("lane_states") or []
+    if mode_norm in ("pass", "sequence", "restart"):
+        for st in lane_states:
+            st["stepIdx"] = 0
+            st["beatCount"] = 0
+            st["done"] = False
+        ctx["sequence_loop_beat"] = 0
+        return True, True
+    for st in lane_states:
+        if not st.get("done"):
+            st["beatCount"] = 0
+    return True, False
+
+
+async def sync_beat_phase(mode: str = "step") -> bool:
+    """Public entry: align active sequence playback to a musical phase."""
+    with _beat_run_lock:
+        ctx = _beat_run
+        if not ctx:
+            return False
+        ok, resend = apply_beat_phase_sync(ctx, mode)
+    if not ok:
+        return False
+    if resend:
+        await _send_all_lanes(ctx)
+    return True
+
+
+def _drain_beat_queue() -> None:
+    try:
+        while True:
+            _thread_beat_queue.get_nowait()
+    except queue.Empty:
+        pass
+
+
+def _reset_beat_side_effects() -> None:
+    """Clear manual routes and queued beats so startup cannot select before presets land."""
+    from util.beat_driver_route import update_beat_route
+
+    update_beat_route({"enabled": False})
+    _drain_beat_queue()
+
+
+def _sequence_switch_wait_from_settings() -> str:
+    try:
+        from settings import get_settings
+
+        raw = get_settings().get("sequence_switch_wait", "beat")
+        mode = _normalize_wait_for({"wait_for": raw}) or "beat"
+        if mode == "phrase":
+            return "beat"
+        return mode
+    except Exception:
+        return "beat"
+
+
+def _normalize_wait_for(play_options: Optional[Dict[str, Any]]) -> Optional[str]:
+    """``beat`` | ``downbeat`` | None (immediate)."""
+    if not isinstance(play_options, dict):
+        return None
+    raw = play_options.get("wait_for")
+    if raw is None:
+        raw = play_options.get("start_on")
+    if raw is None:
+        return None
+    s = str(raw).strip().lower()
+    if s in ("beat", "next_beat"):
+        return "beat"
+    if s in ("downbeat", "next_downbeat"):
+        return "downbeat"
+    return None
+
+
+def _play_options_without_wait(play_options: Optional[Dict[str, Any]]) -> Optional[Dict[str, Any]]:
+    if not isinstance(play_options, dict):
+        return play_options
+    out = dict(play_options)
+    out.pop("wait_for", None)
+    out.pop("start_on", None)
+    return out
+
+
+def _cancel_pending_beat_waiter() -> None:
+    global _pending_beat_task, _pending_beat_token
+    _pending_beat_token += 1
+    t = _pending_beat_task
+    _pending_beat_task = None
+    if t and not t.done():
+        t.cancel()
+
+
+def clear_pending_play() -> None:
+    """Drop a queued sequence start (e.g. user stop)."""
+    global _pending_play
+    with _pending_play_lock:
+        _pending_play = None
+    _cancel_pending_beat_waiter()
+
+
+def pending_play_status() -> Dict[str, Any]:
+    with _pending_play_lock:
+        p = _pending_play
+    if not p:
+        return {"pending": False}
+    return {
+        "pending": True,
+        "wait_for": p.get("wait_for"),
+        "sequence_id": p.get("sequence_id"),
+        "zone_id": p.get("zone_id"),
+    }
+
+
+def _beat_phase_from_sources() -> Dict[str, Any]:
+    from util import audio_detector as ad_mod
+
+    if ad_mod.shared_beat_detector_running():
+        st = ad_mod.shared_beat_status_snapshot()
+        if st:
+            return dict(st)
+    return dict(_last_thread_beat_phase)
+
+
+def _beat_is_downbeat_from_sources() -> bool:
+    return bool(_beat_phase_from_sources().get("is_downbeat"))
+
+
+def _mark_simulated_beat_phase(*, beats_per_bar: int = 4) -> None:
+    global _sim_beat_counter, _last_thread_beat_phase
+    bpb = max(1, int(beats_per_bar))
+    _sim_beat_counter += 1
+    bar_beat = ((_sim_beat_counter - 1) % bpb) + 1
+    is_downbeat = bar_beat == 1
+    _last_thread_beat_phase = {
+        "bar_beat": bar_beat,
+        "is_downbeat": is_downbeat,
+    }
+
+
+def _queue_pending_start(
+    zone_id: str,
+    sequence_id: str,
+    profile_id: str,
+    play_options: Optional[Dict[str, Any]],
+    wait_for: str,
+    *,
+    bpm: float,
+) -> None:
+    global _pending_play
+    clear_pending_play()
+    with _pending_play_lock:
+        _pending_play = {
+            "zone_id": str(zone_id),
+            "sequence_id": str(sequence_id),
+            "profile_id": str(profile_id),
+            "play_options": _play_options_without_wait(play_options),
+            "wait_for": wait_for,
+        }
+    _ensure_pending_beat_waiter(bpm)
+
+
+def _ensure_pending_beat_waiter(bpm: float) -> None:
+    """When nothing is playing and audio is off, emit synthetic beats until pending starts."""
+    from util import audio_detector as ad_mod
+
+    if ad_mod.shared_beat_detector_running():
+        return
+    with _beat_run_lock:
+        if _beat_run:
+            return
+    try:
+        loop = asyncio.get_running_loop()
+    except RuntimeError:
+        return
+    global _pending_beat_task, _pending_beat_token
+    t = _pending_beat_task
+    if t and not t.done():
+        t.cancel()
+    _pending_beat_token += 1
+    my_tok = _pending_beat_token
+    _pending_beat_task = loop.create_task(_pending_beat_wait_loop(bpm, my_tok))
+
+
+async def _pending_beat_wait_loop(bpm: float, my_token: int) -> None:
+    from util import audio_detector as ad_mod
+
+    interval = 60.0 / max(30.0, min(300.0, float(bpm)))
+    while True:
+        with _pending_play_lock:
+            if _pending_beat_token != my_token or _pending_play is None:
+                return
+        if ad_mod.shared_beat_detector_running():
+            return
+        await asyncio.sleep(interval)
+        with _pending_play_lock:
+            if _pending_beat_token != my_token or _pending_play is None:
+                return
+        if ad_mod.shared_beat_detector_running():
+            return
+        _mark_simulated_beat_phase()
+        push_thread_beat()
+
+
+async def _try_consume_pending_play(*, is_downbeat: bool) -> bool:
+    global _pending_play
+    with _pending_play_lock:
+        pending = _pending_play
+        if not pending:
+            return False
+        wait_for = str(pending.get("wait_for") or "beat").strip().lower()
+        if wait_for == "downbeat" and not is_downbeat:
+            return False
+        _pending_play = None
+    _cancel_pending_beat_waiter()
+    await _start_immediate(
+        pending["zone_id"],
+        pending["sequence_id"],
+        pending["profile_id"],
+        pending.get("play_options"),
+    )
+    return True
+
+
+def stop() -> None:
+    """Stop server playback state without sending device clear (e.g. before starting another run)."""
+    clear_pending_play()
+    _halt_playback_state()
+    _reset_beat_side_effects()
 
 
 def push_thread_beat() -> None:
@@ -920,6 +1208,12 @@ async def beat_consumer_loop() -> None:
             from util.beat_driver_route import notify_beat_detected
 
             for _ in range(n):
+                phase = _beat_phase_from_sources()
+                is_down = bool(phase.get("is_downbeat"))
+                try:
+                    await _try_consume_pending_play(is_downbeat=is_down)
+                except Exception as e:
+                    print(f"[sequence-playback] pending start: {e}")
                 try:
                     await process_active_beat_advance()
                 except Exception as e:
@@ -981,20 +1275,10 @@ async def _simulated_beat_loop(ctx: Dict[str, Any], my_token: int, bpm: float) -
             return
         if ad_mod.shared_beat_detector_running():
             continue
+        _mark_simulated_beat_phase()
         push_thread_beat()
 
 
-def stop() -> None:
-    global _beat_run, _sim_beat_task, _sim_beat_token
-    with _beat_run_lock:
-        _beat_run = None
-        _sim_beat_token += 1
-    st = _sim_beat_task
-    _sim_beat_task = None
-    if st and not st.done():
-        st.cancel()
-
-
 def stop_if_playing_sequence(sequence_id: str) -> bool:
     """If zone sequence playback is running this sequence id, stop it (e.g. after save/delete)."""
     sid = str(sequence_id).strip()
@@ -1007,6 +1291,10 @@ def stop_if_playing_sequence(sequence_id: str) -> bool:
         cur = ctx.get("sequence_id")
         if cur is None or str(cur).strip() != sid:
             return False
+    try:
+        loop = asyncio.get_running_loop()
+        loop.create_task(stop_playback(clear_devices=True))
+    except RuntimeError:
         stop()
     return True
 
@@ -1016,6 +1304,29 @@ async def start(
     sequence_id: str,
     profile_id: str,
     play_options: Optional[Dict[str, Any]] = None,
+) -> None:
+    """Start immediately, or queue until the next beat / downbeat (``wait_for`` in *play_options*)."""
+    from models.sequence import Sequence
+
+    seq_m = Sequence()
+    sequence_doc = seq_m.read(sequence_id)
+    if not sequence_doc or str(sequence_doc.get("profile_id")) != str(profile_id):
+        raise ValueError("sequence not found")
+    wait_for = _sequence_switch_wait_from_settings()
+    if wait_for:
+        bpm = _coerce_simulated_bpm(sequence_doc, play_options)
+        _queue_pending_start(
+            zone_id, sequence_id, profile_id, play_options, wait_for, bpm=bpm
+        )
+        return
+    await _start_immediate(zone_id, sequence_id, profile_id, play_options)
+
+
+async def _start_immediate(
+    zone_id: str,
+    sequence_id: str,
+    profile_id: str,
+    play_options: Optional[Dict[str, Any]] = None,
 ) -> None:
     global _beat_run, _sim_beat_task, _sim_beat_token
     from models.preset import Preset
@@ -1052,14 +1363,11 @@ async def start(
     ctx["zone_id"] = str(zone_id)
     ctx["sequence_loop_beat"] = 0
 
-    await _deliver_sequence_presets_bulk(ctx)
+    _reset_beat_side_effects()
-
+    await _prime_all_lanes(ctx)
-    from util.beat_driver_route import update_beat_route
+    await _deliver_zone_brightness_for_sequence(ctx)
-
-    update_beat_route({"enabled": False})
     with _beat_run_lock:
         _beat_run = ctx
-    await _send_all_lanes(ctx)
 
     bpm = _coerce_simulated_bpm(sequence_doc, play_options)
     loop = asyncio.get_running_loop()

tests/beat_detect.py

@@ -112,12 +112,6 @@ def parse_args() -> argparse.Namespace:
         default=0.12,
         help="Aubio detection threshold",
     )
-    parser.add_argument(
-        "--silence-gate-db",
-        type=float,
-        default=-58.0,
-        help="Ignore beat triggers when frame RMS is below this dB level",
-    )
     return parser.parse_args()
 
 
@@ -131,6 +125,141 @@ def _estimate_bpm(beat_times: Deque[float]) -> float | None:
     return 60.0 / float(np.median(valid))
 
 
+def _is_plausible_ioi(
+    last_trigger_s: float,
+    beat_times: Deque[float],
+    now_s: float,
+    *,
+    min_ratio: float = 0.42,
+    max_ratio: float = 2.5,
+) -> bool:
+    """Reject double-time / half-time false triggers vs recent median interval."""
+    if last_trigger_s <= 0 or len(beat_times) < 2:
+        return True
+    ioi = now_s - last_trigger_s
+    if ioi <= 0:
+        return False
+    intervals = np.diff(np.array(list(beat_times)[-8:], dtype=np.float64))
+    if intervals.size == 0:
+        return True
+    med = float(np.median(intervals))
+    if med < 0.05:
+        return True
+    return (ioi >= med * min_ratio) and (ioi <= med * max_ratio)
+
+
+class BarPhaseTracker:
+    """Track beat-in-bar from downbeat counting (kick hints)."""
+
+    def __init__(self, beats_per_bar: int = 4, kick_conf_min: float = 1.15):
+        self.beats_per_bar = max(1, int(beats_per_bar))
+        self.kick_conf_min = float(kick_conf_min)
+        self.bar_beat = 1
+        self.is_downbeat = True
+        self.confidence = 0.0
+        self._last_downbeat_s = 0.0
+        self._aligned_kicks = 0
+        self._total_beats = 0
+
+    def reset(self) -> None:
+        self.bar_beat = 1
+        self.is_downbeat = True
+        self.confidence = 0.0
+        self._last_downbeat_s = 0.0
+        self._aligned_kicks = 0
+        self._total_beats = 0
+
+    def anchor_downbeat(self, now_s: float) -> None:
+        self.bar_beat = 1
+        self.is_downbeat = True
+        self._last_downbeat_s = float(now_s)
+        self.confidence = max(self.confidence, 0.85)
+
+    def _bar_duration_s(
+        self, bpm: float | None, median_ioi: float | None
+    ) -> float | None:
+        if bpm is not None and bpm > 0:
+            return (60.0 / float(bpm)) * self.beats_per_bar
+        if median_ioi is not None and median_ioi > 0:
+            return float(median_ioi) * self.beats_per_bar
+        return None
+
+    @staticmethod
+    def _near_whole_bars(elapsed: float, bar_dur: float, tol: float = 0.14) -> bool:
+        if bar_dur <= 0 or elapsed <= 0:
+            return False
+        n = elapsed / bar_dur
+        nearest = max(1, round(n))
+        return abs(n - nearest) <= tol
+
+    def on_beat(
+        self,
+        now_s: float,
+        beat_type: str,
+        beat_type_conf: float,
+        *,
+        bpm: float | None = None,
+        median_ioi: float | None = None,
+    ) -> dict[str, int | float | bool | str]:
+        self._total_beats += 1
+        bar_dur = self._bar_duration_s(bpm, median_ioi)
+        is_kick = (
+            str(beat_type or "").lower() == "kick"
+            and float(beat_type_conf or 0.0) >= self.kick_conf_min
+        )
+
+        downbeat_locked = False
+        if is_kick:
+            if self._last_downbeat_s <= 0 or self._total_beats <= 2:
+                downbeat_locked = True
+            elif bar_dur and self._near_whole_bars(
+                now_s - self._last_downbeat_s, bar_dur
+            ):
+                downbeat_locked = True
+            elif is_kick and self.bar_beat >= max(2, self.beats_per_bar - 1):
+                downbeat_locked = True
+
+        prev_bar_beat = int(self.bar_beat)
+        if downbeat_locked:
+            self.bar_beat = 1
+            self.is_downbeat = True
+            self._last_downbeat_s = float(now_s)
+            self._aligned_kicks += 1
+        elif self._total_beats <= 1:
+            self.bar_beat = 1
+            self.is_downbeat = True
+        else:
+            self.bar_beat = (prev_bar_beat % self.beats_per_bar) + 1
+            self.is_downbeat = self.bar_beat == 1
+
+        if self._total_beats >= self.beats_per_bar:
+            bars_seen = max(1, self._total_beats // self.beats_per_bar)
+            self.confidence = min(1.0, self._aligned_kicks / bars_seen)
+
+        return {
+            "bar_beat": int(self.bar_beat),
+            "beats_per_bar": int(self.beats_per_bar),
+            "is_downbeat": bool(self.is_downbeat),
+            "phase_confidence": round(float(self.confidence), 3),
+            "bar_phase_readout": f"{int(self.bar_beat)}/{int(self.beats_per_bar)}",
+        }
+
+
+def _resolve_bpm(
+    beat_times: Deque[float],
+    aubio_bpm: float | None,
+) -> float | None:
+    estimated = _estimate_bpm(beat_times)
+    if estimated is None:
+        return aubio_bpm
+    if aubio_bpm is None or aubio_bpm <= 0:
+        return estimated
+    ratio = float(aubio_bpm) / estimated
+    if ratio > 1.75 or ratio < 0.57:
+        return estimated
+    return estimated
+
+
 def _load_aubio_if_needed(mode: str):
     if mode == "custom":
         return None
@@ -170,6 +299,8 @@ class BeatDetectRuntime:
         )
         self.last_trigger_s = 0.0
         self.debounce_s = float(args.min_ioi_ms) / 1000.0
+        bpb = int(getattr(args, "beats_per_bar", 4) or 4)
+        self.bar_phase = BarPhaseTracker(beats_per_bar=bpb)
 
     def setup(self, sample_rate: int):
         self.sample_rate = int(sample_rate)
@@ -192,6 +323,9 @@ class BeatDetectRuntime:
         self.beat_times.clear()
         self.tempo = None
         if self.aubio is not None:
+            self._init_aubio_tempo(win_size)
+
+    def _init_aubio_tempo(self, win_size: int):
         self.tempo = self.aubio.tempo(
             self.args.aubio_method, win_size, self.frame_size, self.sample_rate
         )
@@ -200,6 +334,27 @@ class BeatDetectRuntime:
         if hasattr(self.tempo, "set_minioi_ms"):
             self.tempo.set_minioi_ms(float(self.args.min_ioi_ms))
 
+    def reset_tempo_state(self) -> None:
+        """Clear tempo/aubio history without losing bar phase."""
+        self.baseline = 1e-6
+        if self.prev_mag is not None:
+            self.prev_mag[:] = 0.0
+        self.beat_times.clear()
+        self.last_trigger_s = 0.0
+        if self.aubio is not None and self.sample_rate > 0:
+            win_size = max(1024, self.frame_size * max(2, self.args.win_mult))
+            self._init_aubio_tempo(win_size)
+
+    def reset_state(self):
+        """Full reset (manual): tempo history and bar phase."""
+        self.reset_tempo_state()
+        self.bar_phase.reset()
+
+    def anchor_bar_phase(self, now_s: float | None = None) -> None:
+        if now_s is None:
+            now_s = time.time()
+        self.bar_phase.anchor_downbeat(now_s)
+
     def _classify_hit(self, mag: np.ndarray):
         total = float(np.mean(mag) + 1e-9)
         kick = float(np.mean(mag[self.kick_mask])) / total if np.any(self.kick_mask) else 0.0
@@ -227,8 +382,6 @@ class BeatDetectRuntime:
         f32 = frame.astype(np.float32)
         rms = float(np.sqrt(np.mean(f32 * f32) + 1e-12))
         db = 20.0 * np.log10(max(rms, 1e-12))
-        if db < float(self.args.silence_gate_db):
-            return None
         mag = np.abs(np.fft.rfft(f32 * self.window)).astype(np.float32)
         band_energy = float(np.mean(mag[self.band_mask]))
         flux = float(np.mean(np.maximum(0.0, mag - self.prev_mag)))
@@ -260,14 +413,30 @@ class BeatDetectRuntime:
             should_trigger = aubio_hit
         else:
             should_trigger = custom_hit or aubio_hit
+        if should_trigger and not _is_plausible_ioi(
+            self.last_trigger_s, self.beat_times, now_s
+        ):
+            should_trigger = False
         if not should_trigger:
             return None
 
         self.last_trigger_s = now_s
         self.beat_times.append(now_s)
-        bpm = aubio_bpm if aubio_bpm is not None else _estimate_bpm(self.beat_times)
+        bpm = _resolve_bpm(self.beat_times, aubio_bpm)
         strength = score / max(1e-9, self.baseline)
         beat_type, beat_type_conf = self._classify_hit(mag)
+        median_ioi = None
+        if len(self.beat_times) >= 2:
+            intervals = np.diff(np.array(self.beat_times, dtype=np.float64))
+            if intervals.size > 0:
+                median_ioi = float(np.median(intervals))
+        phase = self.bar_phase.on_beat(
+            now_s,
+            beat_type,
+            beat_type_conf,
+            bpm=bpm,
+            median_ioi=median_ioi,
+        )
         if self.args.mode == "custom":
             src = "custom"
         elif self.args.mode == "aubio":
@@ -288,6 +457,7 @@ class BeatDetectRuntime:
             "beat_type": beat_type,
             "beat_type_confidence": beat_type_conf,
             "db": db,
+            **phase,
         }
 
 

tests/models/test_preset.py

@@ -25,18 +25,20 @@ def test_preset():
     print("\nTesting update preset")
     update_data = {
         "name": "test_preset",
-        "pattern": "on",
+        "pattern": "colour_cycle",
         "colors": ["#FF0000", "#00FF00"],
         "delay": 100,
         "brightness": 127,
         "n1": 10,
-        "n2": 20
+        "n2": 20,
+        "mode": 1,
     }
     result = presets.update(preset_id, update_data)
     assert result is True
     updated = presets.read(preset_id)
     assert updated["name"] == "test_preset"
-    assert updated["pattern"] == "on"
+    assert updated["pattern"] == "colour_cycle"
+    assert updated["mode"] == 1
     assert updated["delay"] == 100
     
     print("\nTesting list presets")

tests/test_audio_reset_tracking.py

@@ -0,0 +1,61 @@
+"""Reset detector must not stop the stream or clear ``running``."""
+
+import os
+import sys
+import time
+
+PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+SRC_PATH = os.path.join(PROJECT_ROOT, "src")
+if SRC_PATH not in sys.path:
+    sys.path.insert(0, SRC_PATH)
+
+from util.audio_detector import AudioBeatDetector  # noqa: E402
+
+
+class _FakeRuntime:
+    def __init__(self):
+        self.reset_calls = 0
+
+    def reset_state(self):
+        self.reset_calls += 1
+
+
+def test_reset_tracking_false_when_not_running():
+    det = AudioBeatDetector()
+    assert det.reset_tracking() is False
+
+
+def test_reset_tracking_queues_on_audio_thread():
+    det = AudioBeatDetector()
+    rt = _FakeRuntime()
+    with det._lock:
+        det._running = True
+        det._runtime = rt
+        det._status["running"] = True
+        det._status["bpm"] = 128.0
+        det._status["beat_seq"] = 7
+
+    assert det.reset_tracking() is True
+    assert rt.reset_calls == 0
+    assert det._pending_reset is True
+
+    st = det.status()
+    assert st["running"] is True
+    assert st["bpm"] == 128.0
+    assert st["beat_seq"] == 7
+
+    det._process_pending_reset(rt)
+    assert rt.reset_calls == 1
+    assert det._pending_reset is False
+    assert det.status()["running"] is True
+
+
+def test_status_keeps_bpm_during_holdover():
+    det = AudioBeatDetector()
+    with det._lock:
+        det._running = True
+        det._holdover_active = True
+        det._status["running"] = True
+        det._status["bpm"] = 128.0
+        det._status["last_beat_ts"] = time.time() - 10.0
+    assert det.status()["bpm"] == 128.0

tests/test_bar_phase.py

@@ -0,0 +1,70 @@
+"""Bar phase (beat-in-bar) tracking for audio beat detection."""
+
+import os
+import sys
+
+PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+if PROJECT_ROOT not in sys.path:
+    sys.path.insert(0, PROJECT_ROOT)
+
+from tests.beat_detect import BarPhaseTracker  # noqa: E402
+
+
+def test_bar_phase_increments_on_non_kick_beats():
+    tr = BarPhaseTracker(beats_per_bar=4)
+    r1 = tr.on_beat(1.0, "snare", 1.3, bpm=120.0)
+    assert r1["bar_beat"] == 1
+    r2 = tr.on_beat(1.5, "snare", 1.2, bpm=120.0)
+    assert r2["bar_beat"] == 2
+    r3 = tr.on_beat(2.0, "hat", 1.1, bpm=120.0)
+    assert r3["bar_beat"] == 3
+
+
+def test_kick_near_bar_boundary_resets_to_downbeat():
+    tr = BarPhaseTracker(beats_per_bar=4)
+    tr.on_beat(0.0, "kick", 1.4, bpm=120.0)
+    tr.on_beat(0.5, "snare", 1.2, bpm=120.0)
+    tr.on_beat(1.0, "snare", 1.2, bpm=120.0)
+    tr.on_beat(1.5, "snare", 1.2, bpm=120.0)
+    r = tr.on_beat(2.0, "kick", 1.5, bpm=120.0)
+    assert r["bar_beat"] == 1
+    assert r["is_downbeat"] is True
+
+
+def test_anchor_downbeat_sets_confidence():
+    tr = BarPhaseTracker(beats_per_bar=4)
+    tr.anchor_downbeat(10.0)
+    assert tr.bar_beat == 1
+    assert tr.confidence >= 0.85
+
+
+def test_reset_tempo_preserves_bar_phase():
+    from argparse import Namespace
+
+    from tests.beat_detect import BeatDetectRuntime  # noqa: E402
+
+    args = Namespace(
+        mode="custom",
+        hop_size=256,
+        win_mult=2,
+        min_band_hz=45.0,
+        max_band_hz=180.0,
+        energy_weight=0.7,
+        flux_weight=0.3,
+        threshold_multiplier=1.35,
+        ema_alpha=0.08,
+        min_ioi_ms=100.0,
+        bpm_window=8,
+        aubio_method="default",
+        aubio_threshold=0.12,
+        beats_per_bar=4,
+    )
+    rt = BeatDetectRuntime(args)
+    rt.setup(44100)
+    rt.bar_phase.on_beat(0.0, "kick", 1.5, bpm=120.0)
+    rt.bar_phase.on_beat(0.5, "snare", 1.2, bpm=120.0)
+    assert rt.bar_phase.bar_beat == 2
+    rt.reset_tempo_state()
+    assert rt.bar_phase.bar_beat == 2
+    rt.reset_state()
+    assert rt.bar_phase.bar_beat == 1

tests/test_beat_detect_ioi.py

@@ -0,0 +1,28 @@
+"""Beat interval plausibility helpers (audio detector)."""
+
+import os
+import sys
+from collections import deque
+
+PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+if PROJECT_ROOT not in sys.path:
+    sys.path.insert(0, PROJECT_ROOT)
+
+from tests.beat_detect import _is_plausible_ioi, _resolve_bpm  # noqa: E402
+
+
+def test_is_plausible_ioi_rejects_double_time():
+    times = deque([0.0, 0.5, 1.0])
+    assert _is_plausible_ioi(1.0, times, 1.15) is False
+
+
+def test_is_plausible_ioi_accepts_steady_grid():
+    times = deque([0.0, 0.5, 1.0])
+    assert _is_plausible_ioi(1.0, times, 1.5) is True
+
+
+def test_resolve_bpm_prefers_intervals_over_wrong_aubio():
+    times = deque([0.0, 0.5, 1.0, 1.5, 2.0])
+    bpm = _resolve_bpm(times, 70.0)
+    assert bpm is not None
+    assert abs(bpm - 120.0) < 5.0

tests/test_beat_driver_route_suppress.py

@@ -0,0 +1,105 @@
+"""Manual beat route: suppress duplicate select after sequence step change."""
+
+import os
+import sys
+
+PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+SRC_PATH = os.path.join(PROJECT_ROOT, "src")
+if SRC_PATH not in sys.path:
+    sys.path.insert(0, SRC_PATH)
+
+from util import beat_driver_route as bdr  # noqa: E402
+
+
+def _patch_delivery(monkeypatch):
+    delivered = []
+
+    async def fake_batch(pairs):
+        delivered.extend(pairs)
+
+    def fake_schedule(coro, _loop):
+        import asyncio
+
+        asyncio.run(coro)
+
+    monkeypatch.setattr(bdr, "_deliver_select_batch", fake_batch)
+    monkeypatch.setattr(bdr, "_main_loop", object())
+    monkeypatch.setattr("asyncio.run_coroutine_threadsafe", fake_schedule)
+    return delivered
+
+
+def test_suppress_next_notify_skips_one_select(monkeypatch):
+    delivered = _patch_delivery(monkeypatch)
+
+    bdr.set_sequence_manual_lane_route(
+        0,
+        ["desk"],
+        "5",
+        {"p": "chase", "a": False, "manual_beat_n": 1},
+    )
+    bdr.mark_sequence_manual_lane_select_sent(0)
+
+    bdr.notify_beat_detected()
+    assert delivered == []
+
+    bdr.notify_beat_detected()
+    assert delivered == [(["desk"], "5")]
+
+
+def test_suppress_does_not_advance_beat_counter(monkeypatch):
+    delivered = _patch_delivery(monkeypatch)
+
+    bdr.set_sequence_manual_lane_route(
+        0,
+        ["desk"],
+        "42",
+        {"p": "radiate", "a": False, "manual_beat_n": 2},
+    )
+    bdr.mark_sequence_manual_lane_select_sent(0)
+
+    bdr.notify_beat_detected()
+    assert delivered == []
+
+    bdr.notify_beat_detected()
+    assert delivered == [(["desk"], "42")]
+
+    delivered.clear()
+    bdr.notify_beat_detected()
+    assert delivered == []
+
+    bdr.notify_beat_detected()
+    assert delivered == [(["desk"], "42")]
+
+
+def test_duplicate_lanes_dedupe_to_one_select_per_beat(monkeypatch):
+    delivered = _patch_delivery(monkeypatch)
+    body = {"p": "radiate", "a": False, "manual_beat_n": 1}
+    entry = {
+        "device_names": ["desk"],
+        "wire_preset_id": "42",
+        "pattern": "radiate",
+        "manual_beat_n": 1,
+        "beat_counter": 0,
+    }
+    with bdr._route_lock:
+        bdr._lane_manual.clear()
+        bdr._lane_manual[-1] = dict(entry)
+        bdr._lane_manual[0] = dict(entry)
+
+    bdr.notify_beat_detected()
+    assert delivered == [(["desk"], "42")]
+
+
+def test_standalone_overlay_skipped_when_sequence_lane_covers(monkeypatch):
+    delivered = _patch_delivery(monkeypatch)
+    body = {"p": "radiate", "a": False, "manual_beat_n": 1}
+
+    bdr.set_sequence_manual_lane_route(1, ["desk"], "42", body)
+    bdr._apply_manual_beat_route_standalone_overlay(["desk"], "42", body)
+
+    with bdr._route_lock:
+        assert -1 not in bdr._lane_manual
+        assert 1 in bdr._lane_manual
+
+    bdr.notify_beat_detected()
+    assert delivered == [(["desk"], "42")]

tests/test_binary_envelope.py

@@ -29,6 +29,21 @@ def test_pack_parse_v2_brightness_only():
     assert data == {"v": "1", "b": 128}
 
 
+def test_pack_parse_v2_mode_maps_to_n6():
+    raw = pack_binary_envelope_v2(
+        presets={
+            "m": {
+                "p": "meteor",
+                "c": ["#aabbcc"],
+                "mode": 2,
+                "n6": 0,
+            }
+        },
+    )
+    data = parse_binary_envelope_v2(raw)
+    assert data["presets"]["m"]["n6"] == 2
+
+
 def test_pack_parse_v2_full():
     raw = pack_binary_envelope_v2(
         presets={

tests/test_endpoints_pytest.py

@@ -50,6 +50,17 @@ def _find_id_by_field(list_resp_json: Dict[str, Any], field: str, value: str) ->
     raise AssertionError(f"Could not find id for {field}={value!r}")
 
 
+def _create_and_apply_profile(c: requests.Session, base_url: str) -> str:
+    """Sequences/scenes/presets need an active profile in session."""
+    unique_profile_name = f"pytest-profile-{uuid.uuid4().hex[:8]}"
+    resp = c.post(f"{base_url}/profiles", json={"name": unique_profile_name})
+    assert resp.status_code == 201
+    profile_id = next(iter(resp.json().keys()))
+    resp = c.post(f"{base_url}/profiles/{profile_id}/apply")
+    assert resp.status_code == 200
+    return str(profile_id)
+
+
 def _start_microdot_server(app: Microdot, host: str, port: int):
     """
     Start Microdot server on a background thread.
@@ -341,19 +352,27 @@ def test_settings_controller(server):
     )
     assert resp.status_code == 400
 
-    resp = c.put(f"{base_url}/settings/settings", json={"wifi_channel": 11})
+    resp = c.put(f"{base_url}/settings", json={"wifi_channel": 11})
     assert resp.status_code == 200
 
-    resp = c.put(f"{base_url}/settings/settings", json={"wifi_channel": 12})
+    resp = c.put(f"{base_url}/settings", json={"wifi_channel": 12})
     assert resp.status_code == 400
 
-    resp = c.put(f"{base_url}/settings/settings", json={"global_brightness": 42})
+    resp = c.put(f"{base_url}/settings", json={"global_brightness": 42})
     assert resp.status_code == 200
     resp = c.get(f"{base_url}/settings")
     assert resp.status_code == 200
     assert resp.json().get("global_brightness") == 42
 
-    resp = c.put(f"{base_url}/settings/settings", json={"global_brightness": 300})
+    resp = c.put(
+        f"{base_url}/settings",
+        json={"sequence_switch_wait": "downbeat"},
+    )
+    assert resp.status_code == 200
+    resp = c.get(f"{base_url}/settings")
+    assert resp.json().get("sequence_switch_wait") == "downbeat"
+
+    resp = c.put(f"{base_url}/settings", json={"global_brightness": 300})
     assert resp.status_code == 400
 
 
@@ -474,6 +493,36 @@ def test_profiles_presets_zones_endpoints(server, monkeypatch):
     resp = c.delete(f"{base_url}/zones/{zone_id}")
     assert resp.status_code == 200
 
+    resp = c.get(f"{base_url}/profiles/{profile_id}/export")
+    assert resp.status_code == 200
+    bundle = resp.json()
+    assert bundle.get("kind") == "profile"
+    assert isinstance(bundle.get("presets"), dict)
+
+    import_name = f"pytest-imported-{uuid.uuid4().hex[:8]}"
+    resp = c.post(
+        f"{base_url}/profiles/import",
+        json={"bundle": bundle, "name": import_name, "apply": False},
+    )
+    assert resp.status_code == 201
+    imported_profile_id = resp.json().get("id") or next(
+        k for k in resp.json().keys() if k != "id"
+    )
+    resp = c.delete(f"{base_url}/profiles/{imported_profile_id}")
+    assert resp.status_code == 200
+
+    resp = c.get(f"{base_url}/presets/{first_preset_id}/export")
+    assert resp.status_code == 200
+    assert resp.json().get("kind") == "preset"
+    resp = c.post(
+        f"{base_url}/presets/import",
+        json={"bundle": resp.json()},
+    )
+    assert resp.status_code == 201
+    imported_preset_id = next(iter(resp.json().keys()))
+    resp = c.delete(f"{base_url}/presets/{imported_preset_id}")
+    assert resp.status_code == 200
+
     # Profile clone + update endpoints.
     clone_name = f"pytest-profile-clone-{uuid.uuid4().hex[:8]}"
     resp = c.post(f"{base_url}/profiles/{profile_id}/clone", json={"name": clone_name})
@@ -508,6 +557,8 @@ def test_groups_sequences_scenes_palettes_patterns_endpoints(server):
     base_url: str = server["base_url"]
     sender: DummySender = server["sender"]
 
+    _create_and_apply_profile(c, base_url)
+
     # Groups.
     unique_group_name = f"pytest-group-{uuid.uuid4().hex[:8]}"
     resp = c.post(f"{base_url}/groups", json={"name": unique_group_name})
@@ -715,6 +766,13 @@ def test_groups_sequences_scenes_palettes_patterns_endpoints(server):
     assert resp.status_code == 200
     definitions = resp.json()
     assert isinstance(definitions, dict)
+    assert "colour_cycle" in definitions
+    cc_mode = definitions["colour_cycle"].get("mode")
+    assert isinstance(cc_mode, dict)
+    assert "0" in cc_mode and "1" in cc_mode
+    assert "blink" in definitions
+    blink_mode = definitions["blink"].get("mode")
+    assert not isinstance(blink_mode, dict) or len(blink_mode) < 2
 
     pattern_id = f"pytest_pattern_{uuid.uuid4().hex[:8]}"
     resp = c.post(

tests/test_pattern_direction.py

@@ -0,0 +1,36 @@
+"""LED strip reverse (n5) mapping for upside-down installs."""
+
+import os
+import sys
+
+PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+DRIVER_SRC = os.path.join(PROJECT_ROOT, "led-driver", "src")
+if DRIVER_SRC not in sys.path:
+    sys.path.insert(0, DRIVER_SRC)
+
+from patterns.pattern_direction import is_reversed, led_i, signed  # noqa: E402
+from preset import Preset  # noqa: E402
+
+
+class _FakeDriver:
+    num_leds = 10
+
+
+def test_preset_reverse_sets_n5():
+    p = Preset({"p": "chase", "reverse": True})
+    assert p.n5 == 1
+    assert is_reversed(p) is True
+
+
+def test_led_i_mirrors_index():
+    drv = _FakeDriver()
+    p = Preset({"p": "chase", "n5": 1})
+    assert led_i(drv, p, 0) == 9
+    assert led_i(drv, p, 9) == 0
+    assert led_i(drv, p, 3) == 6
+
+
+def test_signed_negates_when_reversed():
+    p = Preset({"p": "chase", "n5": 1})
+    assert signed(p, 4) == -4
+    assert signed(Preset({"p": "chase", "n5": 0}), 4) == 4

tests/test_preset_wire_mode.py

@@ -0,0 +1,51 @@
+"""Preset style mode: ``mode`` field, wire ``n6``, and pattern.json metadata."""
+
+import json
+import sys
+from pathlib import Path
+
+PROJECT_ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(PROJECT_ROOT / "src"))
+sys.path.insert(0, str(PROJECT_ROOT / "led-driver" / "src"))
+
+from patterns.pattern_modes import style_mode  # noqa: E402
+from preset import Preset  # noqa: E402
+from util.espnow_message import build_preset_dict, wire_n6  # noqa: E402
+
+
+def test_wire_n6_prefers_mode_over_n6():
+    assert wire_n6({"mode": 2, "n6": 0}) == 2
+    assert wire_n6({"n6": 1}) == 1
+    assert wire_n6({}) == 0
+
+
+def test_build_preset_dict_maps_mode_to_n6():
+    wire = build_preset_dict({"pattern": "meteor", "mode": 2, "colors": ["#ffffff"]})
+    assert wire["n6"] == 2
+    assert wire["p"] == "meteor"
+
+
+def test_preset_edit_accepts_mode_alias():
+    p = Preset({"p": "colour_cycle", "mode": 1, "d": 100, "c": [(255, 255, 255)]})
+    assert p.n6 == 1
+
+
+def test_style_mode_reads_mode_and_legacy_pattern_id():
+    p = Preset({"p": "colour_cycle", "mode": 0, "d": 100, "c": [(255, 0, 0)]})
+    assert style_mode(p, 0, {"rainbow": 1}) == 0
+
+    legacy = Preset({"p": "rainbow", "d": 100, "c": [(255, 0, 0)]})
+    assert style_mode(legacy, 0, {"rainbow": 1}) == 1
+
+
+def test_pattern_json_defines_mode_for_merged_patterns():
+    path = PROJECT_ROOT / "db" / "pattern.json"
+    definitions = json.loads(path.read_text(encoding="utf-8"))
+    for name in ("colour_cycle", "chase", "aurora", "meteor", "particles", "sparkle"):
+        assert name in definitions, name
+        mode = definitions[name].get("mode")
+        assert isinstance(mode, dict), name
+        assert len(mode) >= 2, name
+
+    blink = definitions.get("blink", {})
+    assert "mode" not in blink or not isinstance(blink.get("mode"), dict) or len(blink.get("mode", {})) < 2

tests/test_profile_bundle.py

@@ -0,0 +1,133 @@
+"""Unit tests for profile/preset/sequence bundle import/export."""
+
+import json
+import sys
+from pathlib import Path
+
+PROJECT_ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(PROJECT_ROOT / "src"))
+
+from models.pallet import Palette  # noqa: E402
+from models.preset import Preset  # noqa: E402
+from models.profile import Profile  # noqa: E402
+from models.sequence import Sequence  # noqa: E402
+from models.zone import Zone  # noqa: E402
+from util.profile_bundle import (  # noqa: E402
+    export_preset_bundle,
+    export_profile_bundle,
+    export_sequence_bundle,
+    import_preset_bundle,
+    import_profile_bundle,
+    import_sequence_bundle,
+)
+
+
+def _fresh_models(tmp_path, monkeypatch):
+    import models.model as model_mod
+
+    db = tmp_path / "db"
+    db.mkdir()
+    monkeypatch.setattr(model_mod, "_db_dir", lambda: str(db))
+
+    for cls in (Profile, Zone, Preset, Sequence, Palette):
+        if hasattr(cls, "_instance"):
+            delattr(cls, "_instance")
+
+    profiles = Profile()
+    zones = Zone()
+    presets = Preset()
+    sequences = Sequence()
+    palette = Palette()
+    return profiles, zones, presets, sequences, palette
+
+
+def test_profile_export_import_round_trip(tmp_path, monkeypatch):
+    profiles, zones, presets, sequences, palette = _fresh_models(tmp_path, monkeypatch)
+
+    pid = profiles.create("Source")
+    zid = zones.create(name="main")
+    preset_id = presets.create(pid)
+    presets.update(
+        preset_id,
+        {
+            "name": "Test preset",
+            "pattern": "blink",
+            "colors": ["#ff0000"],
+            "brightness": 200,
+            "delay": 50,
+        },
+    )
+    zones.update(
+        zid,
+        {
+            "presets_flat": [str(preset_id)],
+            "default_preset": str(preset_id),
+        },
+    )
+    seq_id = sequences.create(pid)
+    sequences.update(
+        seq_id,
+        {
+            "name": "Beat seq",
+            "lanes": [[{"preset_id": str(preset_id), "group_ids": [], "beats": 2}]],
+            "lanes_group_ids": [[]],
+        },
+    )
+    zones.update(zid, {"sequence_ids": [str(seq_id)]})
+    profiles.update(pid, {"zones": [str(zid)]})
+    palette_id = profiles.read(pid)["palette_id"]
+    palette.update(palette_id, {"colors": ["#112233", "#445566"]})
+
+    bundle = export_profile_bundle(
+        str(pid), profiles, zones, presets, sequences, palette
+    )
+    assert bundle["kind"] == "profile"
+    assert str(preset_id) in bundle["presets"]
+    assert str(seq_id) in bundle["sequences"]
+    assert bundle["palette"]["colors"] == ["#112233", "#445566"]
+
+    new_pid, _ = import_profile_bundle(
+        bundle, profiles, zones, presets, sequences, palette, name="Imported"
+    )
+    assert new_pid != str(pid)
+    found = [
+        presets.read(k)
+        for k in presets.list()
+        if isinstance(presets.read(k), dict)
+        and str(presets.read(k).get("profile_id")) == str(new_pid)
+        and presets.read(k).get("name") == "Test preset"
+    ]
+    assert found
+
+
+def test_preset_export_import(tmp_path, monkeypatch):
+    profiles, zones, presets, sequences, palette = _fresh_models(tmp_path, monkeypatch)
+    pid = profiles.create("P")
+    preset_id = presets.create(pid)
+    presets.update(preset_id, {"name": "Solo", "pattern": "on", "colors": ["#00ff00"]})
+
+    bundle = export_preset_bundle(str(preset_id), presets)
+    assert bundle["kind"] == "preset"
+
+    new_id, data = import_preset_bundle(bundle, presets, str(pid))
+    assert new_id != str(preset_id)
+    assert data["name"] == "Solo"
+
+
+def test_sequence_export_import_with_presets(tmp_path, monkeypatch):
+    profiles, zones, presets, sequences, palette = _fresh_models(tmp_path, monkeypatch)
+    pid = profiles.create("P")
+    preset_id = presets.create(pid)
+    presets.update(preset_id, {"name": "Step", "pattern": "off"})
+    seq_id = sequences.create(pid)
+    sequences.update(
+        seq_id,
+        {"name": "S", "lanes": [[{"preset_id": str(preset_id), "beats": 1}]]},
+    )
+
+    bundle = export_sequence_bundle(str(seq_id), sequences, presets, profile_id=str(pid))
+    assert str(preset_id) in bundle["presets"]
+
+    new_seq_id, doc = import_sequence_bundle(bundle, sequences, presets, str(pid))
+    assert new_seq_id != str(seq_id)
+    assert doc["lanes"][0][0]["preset_id"] != str(preset_id)

tests/test_sequence_beat_phase_sync.py

@@ -0,0 +1,43 @@
+"""Sequence beat phase alignment (sync to musical downbeat)."""
+
+import os
+import sys
+
+PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+SRC_PATH = os.path.join(PROJECT_ROOT, "src")
+if SRC_PATH not in sys.path:
+    sys.path.insert(0, SRC_PATH)
+
+from util.sequence_playback import apply_beat_phase_sync  # noqa: E402
+
+
+def _ctx(lane_states):
+    return {"lane_states": lane_states, "sequence_loop_beat": 5}
+
+
+def test_apply_beat_phase_sync_step_resets_beat_count_only():
+    ctx = _ctx(
+        [
+            {"stepIdx": 2, "beatCount": 3, "done": False},
+            {"stepIdx": 1, "beatCount": 1, "done": True},
+        ]
+    )
+    ok, resend = apply_beat_phase_sync(ctx, "step")
+    assert ok is True
+    assert resend is False
+    assert ctx["lane_states"][0]["stepIdx"] == 2
+    assert ctx["lane_states"][0]["beatCount"] == 0
+    assert ctx["lane_states"][1]["beatCount"] == 1
+    assert ctx["sequence_loop_beat"] == 5
+
+
+def test_apply_beat_phase_sync_pass_restarts_pass():
+    ctx = _ctx([{"stepIdx": 2, "beatCount": 3, "done": False}])
+    ok, resend = apply_beat_phase_sync(ctx, "pass")
+    assert ok is True
+    assert resend is True
+    st = ctx["lane_states"][0]
+    assert st["stepIdx"] == 0
+    assert st["beatCount"] == 0
+    assert st["done"] is False
+    assert ctx["sequence_loop_beat"] == 0

tests/test_sequence_pending_start.py

@@ -0,0 +1,88 @@
+"""Deferred sequence start on beat / downbeat."""
+
+import asyncio
+import os
+import sys
+
+PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+SRC_PATH = os.path.join(PROJECT_ROOT, "src")
+if SRC_PATH not in sys.path:
+    sys.path.insert(0, SRC_PATH)
+
+from util import sequence_playback as sp  # noqa: E402
+
+
+def test_normalize_wait_for():
+    assert sp._normalize_wait_for({"wait_for": "beat"}) == "beat"
+    assert sp._normalize_wait_for({"start_on": "downbeat"}) == "downbeat"
+    assert sp._normalize_wait_for({"wait_for": "next_beat"}) == "beat"
+    assert sp._normalize_wait_for({}) is None
+    assert sp._play_options_without_wait({"wait_for": "beat", "zone_id": "1"}) == {"zone_id": "1"}
+
+
+def test_pending_play_status_empty():
+    sp.clear_pending_play()
+    assert sp.pending_play_status() == {"pending": False}
+
+
+def test_queue_and_clear_pending():
+    sp.clear_pending_play()
+    sp._queue_pending_start("z1", "s1", "p1", {"simulated_bpm": 120}, "beat", bpm=120.0)
+    st = sp.pending_play_status()
+    assert st["pending"] is True
+    assert st["wait_for"] == "beat"
+    assert st["sequence_id"] == "s1"
+    sp.clear_pending_play()
+    assert sp.pending_play_status()["pending"] is False
+
+
+def test_try_consume_pending_beat():
+    sp.clear_pending_play()
+    sp._queue_pending_start("z1", "s1", "p1", None, "beat", bpm=120.0)
+
+    async def fake_start(*_a, **_k):
+        return None
+
+    sp._start_immediate = fake_start  # type: ignore[method-assign]
+    assert asyncio.run(sp._try_consume_pending_play(is_downbeat=False)) is True
+    assert sp.pending_play_status()["pending"] is False
+
+
+def test_try_consume_pending_downbeat_skips_upbeat():
+    sp.clear_pending_play()
+    sp._queue_pending_start("z1", "s1", "p1", None, "downbeat", bpm=120.0)
+    assert asyncio.run(sp._try_consume_pending_play(is_downbeat=False)) is False
+    assert sp.pending_play_status()["pending"] is True
+
+    async def fake_start(*_a, **_k):
+        return None
+
+    sp._start_immediate = fake_start  # type: ignore[method-assign]
+    assert asyncio.run(sp._try_consume_pending_play(is_downbeat=True)) is True
+    sp.clear_pending_play()
+
+
+def test_downbeat_start_counts_trigger_beat(monkeypatch):
+    """The downbeat that starts playback is beat 1 of the step, not beat 0."""
+    sp.clear_pending_play()
+    sp.stop()
+
+    async def fake_start(_z, _s, _p, _opts):
+        sp._beat_run = {
+            "lanes": [[{"preset_id": "1", "beats": 4}]],
+            "lane_states": [{"stepIdx": 0, "beatCount": 0, "done": False}],
+            "num_lanes": 1,
+            "sequence_loop_beat": 0,
+        }
+
+    monkeypatch.setattr(sp, "_start_immediate", fake_start)
+    sp._queue_pending_start("z1", "s1", "p1", None, "downbeat", bpm=120.0)
+
+    async def run():
+        assert await sp._try_consume_pending_play(is_downbeat=True) is True
+        await sp.process_active_beat_advance()
+
+    asyncio.run(run())
+    assert sp._beat_run["lane_states"][0]["beatCount"] == 1
+    sp.stop()
+

tests/test_sequence_playback_loop.py

@@ -0,0 +1,30 @@
+"""Sequence playback loop flag coercion."""
+
+import os
+import sys
+
+PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+SRC_PATH = os.path.join(PROJECT_ROOT, "src")
+if SRC_PATH not in sys.path:
+    sys.path.insert(0, SRC_PATH)
+
+from util.sequence_playback import (  # noqa: E402
+    _coerce_loop,
+    _ordered_unique_preset_ids_in_lane,
+)
+
+
+def test_coerce_loop():
+    assert _coerce_loop({"loop": True}) is True
+    assert _coerce_loop({"loop": False}) is False
+    assert _coerce_loop({"sequence_loop": 0}) is False
+    assert _coerce_loop({}) is True
+
+
+def test_ordered_unique_preset_ids_in_lane():
+    lane = [
+        {"preset_id": "6", "beats": 1},
+        {"preset_id": "4", "beats": 2},
+        {"preset_id": "6", "beats": 1},
+    ]
+    assert _ordered_unique_preset_ids_in_lane(lane) == ["6", "4"]

tests/test_sequence_zone_groups.py

@@ -0,0 +1,28 @@
+"""Sequence playback targets only explicitly checked lane groups."""
+
+from util.sequence_playback import (
+    _group_ids_for_lane_step,
+    _partition_devices_for_lane,
+    _resolve_step_device_names,
+    _split_device_names_for_lane,
+)
+
+
+def test_empty_lane_groups_do_not_default_to_zone():
+    zone = {"group_ids": ["g1", "g2"]}
+    seq = {"lanes": [[{"preset_id": "1", "beats": 1}]], "lanes_group_ids": [[]]}
+    gids = _group_ids_for_lane_step(seq, seq["lanes"][0][0], 0, 1, zone_doc=zone)
+    assert gids == []
+
+
+def test_resolve_step_with_no_groups_returns_empty():
+    zone = {"group_ids": ["g1"], "names": ["dev-a"]}
+    names = _resolve_step_device_names(zone, [], None, None)
+    assert names == []
+
+
+def test_whole_zone_not_partitioned_across_lanes():
+    names = ["dev-a", "dev-b", "dev-c"]
+    assert _split_device_names_for_lane(names, 0, 2, partition_shared_zone=False) == names
+    assert _split_device_names_for_lane(names, 1, 2, partition_shared_zone=False) == names
+    assert not _partition_devices_for_lane(2, lane_has_own_groups=False, step_group_ids=[])

tests/test_ui_settings.py

@@ -0,0 +1,22 @@
+"""Server-owned UI settings (no browser localStorage)."""
+
+import os
+import sys
+
+PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+SRC_PATH = os.path.join(PROJECT_ROOT, "src")
+if SRC_PATH not in sys.path:
+    sys.path.insert(0, SRC_PATH)
+
+from util.audio_run_persist import read_audio_run_state  # noqa: E402
+from util.sequence_playback import _sequence_switch_wait_from_settings  # noqa: E402
+
+
+def test_audio_run_state_includes_device_form_fields():
+    st = read_audio_run_state()
+    assert "device_override" in st
+    assert "device_select" in st
+
+
+def test_sequence_switch_wait_from_settings():
+    assert _sequence_switch_wait_from_settings() in ("beat", "downbeat")

tests/test_zone_content_kind.py

@@ -0,0 +1,27 @@
+"""Zone content_kind is fixed after create."""
+
+import json
+import os
+import sys
+import tempfile
+from pathlib import Path
+
+PROJECT_ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(PROJECT_ROOT / "src"))
+
+from models.zone import Zone  # noqa: E402
+
+
+def test_update_cannot_change_content_kind():
+    with tempfile.TemporaryDirectory() as tmp:
+        path = os.path.join(tmp, "zone.json")
+        with open(path, "w", encoding="utf-8") as f:
+            json.dump({}, f)
+        z = Zone()
+        z.file = path
+        z.clear()
+        zid = z.create("preset zone", group_ids=[], content_kind="presets")
+        z.update(zid, {"content_kind": "sequences", "name": "preset zone"})
+        doc = z.read(zid)
+        assert doc["content_kind"] == "presets"
+        assert doc.get("sequence_ids") == []