feat(zones): profile-scoped groups, zone modes, sequence brightness

- Optional profile_id on groups; UI and API for shared vs profile-only groups\n- Zone content_kind (presets vs sequences); edit modal shows matching sections; devices via groups only\n- Server sequence playback folds zone brightness into preset wire b (per MAC where needed)\n- Related preset/sequence/audio/beat-route and client updates

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

src/models/group.py

@@ -2,7 +2,12 @@ from models.model import Model
 
 
 class Group(Model):
-    """Device groups (members + optional Wi‑Fi driver defaults); also pattern fields for sequences."""
+    """Device groups (members + optional Wi‑Fi driver defaults); also pattern fields for sequences.
+
+    Omit ``profile_id`` (or set it null) for a **shared** group: every profile can attach it to
+    zones and sequences. Set ``profile_id`` to a profile id to show the group only when that
+    profile is active (still one global record in ``group.json``).
+    """
 
     def __init__(self):
         super().__init__()

src/models/preset.py

@@ -15,6 +15,9 @@ class Preset(Model):
                     if default_profile_id is not None:
                         preset_data["profile_id"] = str(default_profile_id)
                         changed = True
+                if isinstance(preset_data, dict) and "group_ids" in preset_data:
+                    preset_data.pop("group_ids", None)
+                    changed = True
             if changed:
                 self.save()
         except Exception:

src/models/sequence.py

@@ -54,9 +54,19 @@ class Sequence(Model):
             if "group_ids" not in doc or not isinstance(doc.get("group_ids"), list):
                 doc["group_ids"] = []
                 changed = True
-            if doc.get("advance_mode") not in ("time", "beats"):
-                doc["advance_mode"] = "time"
+            if doc.get("advance_mode") != "beats":
+                doc["advance_mode"] = "beats"
                 changed = True
+            if "simulated_bpm" not in doc:
+                doc["simulated_bpm"] = 120
+                changed = True
+            else:
+                try:
+                    sb = int(float(doc["simulated_bpm"]))
+                    doc["simulated_bpm"] = max(30, min(300, sb))
+                except (TypeError, ValueError):
+                    doc["simulated_bpm"] = 120
+                    changed = True
             if "sequence_transition" not in doc:
                 doc["sequence_transition"] = 500
                 changed = True
@@ -102,9 +112,10 @@ class Sequence(Model):
             "group_ids": [],
             "lanes": [[]],
             "lanes_group_ids": [[]],
-            "advance_mode": "time",
+            "advance_mode": "beats",
             "steps": [],
             "step_duration_ms": 3000,
+            "simulated_bpm": 120,
             "sequence_transition": 500,
             "loop": True,
         }

src/models/zone.py

@@ -19,7 +19,11 @@ def _maybe_migrate_tab_json_to_zone():
 
 
 class Zone(Model):
-    """Preset layout row (stored in ``db/zone.json``); legacy storage was ``tab.json`` / Tab."""
+    """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).
+    """
 
     def __init__(self):
         if not getattr(Zone, "_migration_checked", False):
@@ -42,12 +46,12 @@ class Zone(Model):
         if changed:
             self.save()
 
-    def create(self, name="", names=None, presets=None, group_ids=None):
+    def create(self, name="", names=None, presets=None, group_ids=None, content_kind=None):
         next_id = self.get_next_id()
         gid_list = []
         if isinstance(group_ids, list):
-            gid_list = [str(x) for x in group_ids if x is not None]
-        self[next_id] = {
+            gid_list = [str(x).strip() for x in group_ids if x is not None and str(x).strip()]
+        doc = {
             "name": name,
             "names": names if names else [],
             "group_ids": gid_list,
@@ -56,6 +60,9 @@ class Zone(Model):
             "default_preset": None,
             "brightness": 255,
         }
+        if content_kind in ("presets", "sequences"):
+            doc["content_kind"] = content_kind
+        self[next_id] = doc
         self.save()
         return next_id