diff --git a/db/group.json b/db/group.json
index bd73159..848c920 100644
--- a/db/group.json
+++ b/db/group.json
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file
diff --git a/db/palette.json b/db/palette.json
index 113e00f..23edbdb 100644
--- a/db/palette.json
+++ b/db/palette.json
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file
diff --git a/db/preset.json b/db/preset.json
index b910a21..fb2c436 100644
--- a/db/preset.json
+++ b/db/preset.json
@@ -1 +1 @@
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blizzard","profile_id":"3","group_ids":["17"],"lanes":[[{"preset_id":"81","beats":16}]],"lanes_group_ids":[["17"]],"advance_mode":"beats","steps":[{"preset_id":"81","beats":16}],"step_duration_ms":3000,"simulated_bpm":75,"sequence_transition":500,"loop":true},"16":{"name":"Winter showcase","profile_id":"3","group_ids":["17"],"lanes":[[{"preset_id":"80","beats":8},{"preset_id":"81","beats":8},{"preset_id":"82","beats":8},{"preset_id":"83","beats":8},{"preset_id":"84","beats":8},{"preset_id":"79","beats":8}]],"lanes_group_ids":[["17"]],"advance_mode":"beats","steps":[{"preset_id":"80","beats":8},{"preset_id":"81","beats":8},{"preset_id":"82","beats":8},{"preset_id":"83","beats":8},{"preset_id":"84","beats":8},{"preset_id":"79","beats":8}],"step_duration_ms":3000,"simulated_bpm":72,"sequence_transition":500,"loop":true}}
\ No newline at end of file
diff --git a/scripts/create_winter_profile.py b/scripts/create_winter_profile.py
new file mode 100644
index 0000000..693fb2c
--- /dev/null
+++ b/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()