Simplify scenes to capture only target state, add target selector

- Remove DeviceBrightnessSnapshot and AutomationSnapshot from scene data model
- Simplify capture_current_snapshot and apply_scene_state to targets only
- Remove device/automation dependencies from scene preset API routes
- Add target selector (combobox + add/remove) to scene capture modal
- Fix stale profiles reference bug in scene_preset_store recapture
- Update automation engine call sites for simplified scene functions
- Sync scene presets cache between automations and scene-presets modules

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/wled_controller/storage/scene_preset.py

@@ -1,8 +1,8 @@
-"""Scene preset data models — snapshot of current system state."""
+"""Scene preset data models — snapshot of target state."""
 
 from dataclasses import dataclass, field
 from datetime import datetime
-from typing import Dict, List, Optional
+from typing import List
 
 
 @dataclass
@@ -38,59 +38,15 @@ class TargetSnapshot:
         )
 
 
-@dataclass
-class DeviceBrightnessSnapshot:
-    """Snapshot of a device's software brightness."""
-
-    device_id: str
-    software_brightness: int = 255
-
-    def to_dict(self) -> dict:
-        return {
-            "device_id": self.device_id,
-            "software_brightness": self.software_brightness,
-        }
-
-    @classmethod
-    def from_dict(cls, data: dict) -> "DeviceBrightnessSnapshot":
-        return cls(
-            device_id=data["device_id"],
-            software_brightness=data.get("software_brightness", 255),
-        )
-
-
-@dataclass
-class AutomationSnapshot:
-    """Snapshot of an automation's enabled state."""
-
-    automation_id: str
-    enabled: bool = True
-
-    def to_dict(self) -> dict:
-        return {
-            "automation_id": self.automation_id,
-            "enabled": self.enabled,
-        }
-
-    @classmethod
-    def from_dict(cls, data: dict) -> "AutomationSnapshot":
-        return cls(
-            automation_id=data.get("automation_id", ""),
-            enabled=data.get("enabled", True),
-        )
-
-
 @dataclass
 class ScenePreset:
-    """A named snapshot of system state that can be restored."""
+    """A named snapshot of target state that can be restored."""
 
     id: str
     name: str
     description: str = ""
     color: str = "#4fc3f7"  # accent color for the card
     targets: List[TargetSnapshot] = field(default_factory=list)
-    devices: List[DeviceBrightnessSnapshot] = field(default_factory=list)
-    automations: List[AutomationSnapshot] = field(default_factory=list)
     order: int = 0
     created_at: datetime = field(default_factory=datetime.utcnow)
     updated_at: datetime = field(default_factory=datetime.utcnow)
@@ -102,8 +58,6 @@ class ScenePreset:
             "description": self.description,
             "color": self.color,
             "targets": [t.to_dict() for t in self.targets],
-            "devices": [d.to_dict() for d in self.devices],
-            "automations": [a.to_dict() for a in self.automations],
             "order": self.order,
             "created_at": self.created_at.isoformat(),
             "updated_at": self.updated_at.isoformat(),
@@ -117,8 +71,6 @@ class ScenePreset:
             description=data.get("description", ""),
             color=data.get("color", "#4fc3f7"),
             targets=[TargetSnapshot.from_dict(t) for t in data.get("targets", [])],
-            devices=[DeviceBrightnessSnapshot.from_dict(d) for d in data.get("devices", [])],
-            automations=[AutomationSnapshot.from_dict(a) for a in data.get("automations", [])],
             order=data.get("order", 0),
             created_at=datetime.fromisoformat(data.get("created_at", datetime.utcnow().isoformat())),
             updated_at=datetime.fromisoformat(data.get("updated_at", datetime.utcnow().isoformat())),

server/src/wled_controller/storage/scene_preset_store.py

@@ -115,8 +115,6 @@ class ScenePresetStore:
 
         existing = self._presets[preset_id]
         existing.targets = preset.targets
-        existing.devices = preset.devices
-        existing.profiles = preset.profiles
         existing.updated_at = datetime.utcnow()
         self._save()
         logger.info(f"Recaptured scene preset: {preset_id}")