fix 8

apps/abstraction/main.py

@@ -15,7 +15,7 @@ import uuid
 from aiomqtt import Client
 from pydantic import ValidationError
 
-from packages.home_capabilities import LightState, ThermostatState, ContactState, TempHumidityState
+from packages.home_capabilities import LightState, ThermostatState, ContactState, TempHumidityState, RelayState
 from apps.abstraction.transformation import (
     transform_abstract_to_vendor,
     transform_vendor_to_abstract
@@ -154,6 +154,9 @@ async def handle_abstract_set(
         if device_type == "light":
             # Validate light SET payload (power and/or brightness)
             LightState.model_validate(abstract_payload)
+        elif device_type == "relay":
+            # Validate relay SET payload (power only)
+            RelayState.model_validate(abstract_payload)
         elif device_type == "thermostat":
             # For thermostat SET: only allow mode and target fields
             allowed_set_fields = {"mode", "target"}
@@ -178,9 +181,10 @@ async def handle_abstract_set(
     # Transform abstract payload to vendor-specific format
     vendor_payload = transform_abstract_to_vendor(device_type, device_technology, abstract_payload)
     
-    # For MAX! thermostats, vendor_payload is a plain string (integer temperature)
+    # For MAX! thermostats and Shelly relays, vendor_payload is a plain string
     # For other devices, it's a dict that needs JSON encoding
-    if device_technology == "max" and device_type == "thermostat":
+    if (device_technology == "max" and device_type == "thermostat") or \
+       (device_technology == "shelly" and device_type == "relay"):
         vendor_message = vendor_payload  # Already a string
     else:
         vendor_message = json.dumps(vendor_payload)
@@ -216,6 +220,8 @@ async def handle_vendor_state(
     try:
         if device_type == "light":
             LightState.model_validate(abstract_payload)
+        elif device_type == "relay":
+            RelayState.model_validate(abstract_payload)
         elif device_type == "thermostat":
             # Validate thermostat state: mode, target, current (required), battery, window_open
             ThermostatState.model_validate(abstract_payload)
@@ -334,9 +340,21 @@ async def mqtt_worker(config: dict[str, Any], redis_client: aioredis.Redis) -> N
                             max_device_type = device["type"]
                             break
                     
+                    # Check for Shelly relay (also sends plain text)
+                    is_shelly_relay = False
+                    shelly_device_id = None
+                    shelly_device_type = None
+                    for device_id, device in devices.items():
+                        if device.get("technology") == "shelly" and device.get("type") == "relay":
+                            if topic == device["topics"]["state"]:
+                                is_shelly_relay = True
+                                shelly_device_id = device_id
+                                shelly_device_type = device["type"]
+                                break
+                    
                     # Parse payload based on device technology
-                    if is_max_device:
-                        # MAX! sends plain integer/string, not JSON
+                    if is_max_device or is_shelly_relay:
+                        # MAX! and Shelly send plain text, not JSON
                         payload = payload_str.strip()
                     else:
                         # All other technologies use JSON
@@ -372,6 +390,14 @@ async def mqtt_worker(config: dict[str, Any], redis_client: aioredis.Redis) -> N
                                 client, redis_client, max_device_id, max_device_type, 
                                 device_technology, payload, redis_channel
                             )
+                        # For Shelly relay devices, we already identified them above
+                        elif is_shelly_relay:
+                            device = devices[shelly_device_id]
+                            device_technology = device.get("technology", "unknown")
+                            await handle_vendor_state(
+                                client, redis_client, shelly_device_id, shelly_device_type, 
+                                device_technology, payload, redis_channel
+                            )
                         else:
                             # Find device by vendor state topic for other technologies
                             for device_id, device in devices.items():

apps/abstraction/transformation.py

@@ -307,6 +307,76 @@ def _transform_temp_humidity_sensor_max_to_abstract(payload: dict[str, Any]) ->
     return payload
 
 
+# ============================================================================
+# HANDLER FUNCTIONS: relay - zigbee2mqtt technology
+# ============================================================================
+
+def _transform_relay_zigbee2mqtt_to_vendor(payload: dict[str, Any]) -> dict[str, Any]:
+    """Transform abstract relay payload to zigbee2mqtt format.
+    
+    Relay only has power on/off, same transformation as light.
+    - power: 'on'/'off' -> state: 'ON'/'OFF'
+    """
+    vendor_payload = payload.copy()
+    
+    if "power" in vendor_payload:
+        power_value = vendor_payload.pop("power")
+        vendor_payload["state"] = power_value.upper() if isinstance(power_value, str) else power_value
+    
+    return vendor_payload
+
+
+def _transform_relay_zigbee2mqtt_to_abstract(payload: dict[str, Any]) -> dict[str, Any]:
+    """Transform zigbee2mqtt relay payload to abstract format.
+    
+    Relay only has power on/off, same transformation as light.
+    - state: 'ON'/'OFF' -> power: 'on'/'off'
+    """
+    abstract_payload = payload.copy()
+    
+    if "state" in abstract_payload:
+        state_value = abstract_payload.pop("state")
+        abstract_payload["power"] = state_value.lower() if isinstance(state_value, str) else state_value
+    
+    return abstract_payload
+
+
+# ============================================================================
+# HANDLER FUNCTIONS: relay - shelly technology
+# ============================================================================
+
+def _transform_relay_shelly_to_vendor(payload: dict[str, Any]) -> str:
+    """Transform abstract relay payload to Shelly format.
+    
+    Shelly expects plain text 'on' or 'off' (not JSON).
+    - power: 'on'/'off' -> 'on'/'off' (plain string)
+    
+    Example:
+    - Abstract: {'power': 'on'}
+    - Shelly: 'on'
+    """
+    power = payload.get("power", "off")
+    return power
+
+
+def _transform_relay_shelly_to_abstract(payload: str) -> dict[str, Any]:
+    """Transform Shelly relay payload to abstract format.
+    
+    Shelly sends plain text 'on' or 'off' (not JSON).
+    - 'on'/'off' -> power: 'on'/'off'
+    
+    Example:
+    - Shelly: 'on'
+    - Abstract: {'power': 'on'}
+    """
+    # Shelly payload is a plain string, not a dict
+    if isinstance(payload, str):
+        return {"power": payload.strip()}
+    
+    # Fallback if it's already a dict (shouldn't happen)
+    return payload
+
+
 # ============================================================================
 # HANDLER FUNCTIONS: max technology (Homegear MAX!)
 # ============================================================================
@@ -420,6 +490,12 @@ TRANSFORM_HANDLERS: dict[tuple[str, str, str], TransformHandler] = {
     ("temp_humidity", "zigbee2mqtt", "to_abstract"): _transform_temp_humidity_sensor_zigbee2mqtt_to_abstract,
     ("temp_humidity", "max", "to_vendor"): _transform_temp_humidity_sensor_max_to_vendor,
     ("temp_humidity", "max", "to_abstract"): _transform_temp_humidity_sensor_max_to_abstract,
+    
+    # Relay transformations
+    ("relay", "zigbee2mqtt", "to_vendor"): _transform_relay_zigbee2mqtt_to_vendor,
+    ("relay", "zigbee2mqtt", "to_abstract"): _transform_relay_zigbee2mqtt_to_abstract,
+    ("relay", "shelly", "to_vendor"): _transform_relay_shelly_to_vendor,
+    ("relay", "shelly", "to_abstract"): _transform_relay_shelly_to_abstract,
 }
 
 

apps/api/main.py

@@ -20,14 +20,32 @@ from packages.home_capabilities import (
     THERMOSTAT_VERSION,
     CONTACT_SENSOR_VERSION,
     TEMP_HUMIDITY_SENSOR_VERSION,
+    RELAY_VERSION,
     LightState,
     ThermostatState,
     ContactState,
-    TempHumidityState
+    TempHumidityState,
+    RelayState,
+    load_layout,
+)
+
+# Import resolvers (must be before router imports to avoid circular dependency)
+from apps.api.resolvers import (
+    DeviceDTO,
+    resolve_group_devices,
+    resolve_scene_step_devices,
+    load_device_rooms,
+    get_room,
+    clear_room_cache,
 )
 
 logger = logging.getLogger(__name__)
 
+
+# ============================================================================
+# STATE CACHES
+# ============================================================================
+
 # In-memory cache for last known device states
 # Will be populated from Redis pub/sub messages
 device_states: dict[str, dict[str, Any]] = {}
@@ -55,6 +73,13 @@ app.add_middleware(
 )
 
 
+@app.on_event("startup")
+async def startup_event():
+    """Include routers after app is initialized to avoid circular imports."""
+    from apps.api.routes.groups_scenes import router as groups_scenes_router
+    app.include_router(groups_scenes_router, prefix="")
+
+
 @app.get("/health")
 async def health() -> dict[str, str]:
     """Health check endpoint.
@@ -148,7 +173,8 @@ async def spec() -> dict[str, dict[str, str]]:
             "light": LIGHT_VERSION,
             "thermostat": THERMOSTAT_VERSION,
             "contact": CONTACT_SENSOR_VERSION,
-            "temp_humidity": TEMP_HUMIDITY_SENSOR_VERSION
+            "temp_humidity": TEMP_HUMIDITY_SENSOR_VERSION,
+            "relay": RELAY_VERSION
         }
     }
 
@@ -204,6 +230,50 @@ def get_mqtt_settings() -> tuple[str, int]:
     return host, port
 
 
+# ============================================================================
+# MQTT PUBLISH
+# ============================================================================
+
+async def publish_abstract_set(device_type: str, device_id: str, payload: dict[str, Any]) -> None:
+    """
+    Publish an abstract set command via MQTT.
+    
+    This function encapsulates MQTT publishing logic so that group/scene
+    execution doesn't need to know MQTT topic details.
+    
+    Topic format: home/{device_type}/{device_id}/set
+    Message format: {"type": device_type, "payload": payload}
+    
+    Args:
+        device_type: Device type (light, thermostat, relay, etc.)
+        device_id: Device identifier
+        payload: Command payload (e.g., {"power": "on", "brightness": 50})
+        
+    Example:
+        >>> await publish_abstract_set("light", "kueche_deckenlampe", {"power": "on", "brightness": 35})
+        # Publishes to: home/light/kueche_deckenlampe/set
+        # Message: {"type": "light", "payload": {"power": "on", "brightness": 35}}
+    """
+    mqtt_host, mqtt_port = get_mqtt_settings()
+    topic = f"home/{device_type}/{device_id}/set"
+    message = {
+        "type": device_type,
+        "payload": payload
+    }
+    
+    try:
+        async with Client(hostname=mqtt_host, port=mqtt_port) as client:
+            await client.publish(
+                topic=topic,
+                payload=json.dumps(message),
+                qos=1
+            )
+            logger.info(f"Published to {topic}: {message}")
+    except Exception as e:
+        logger.error(f"Failed to publish to {topic}: {e}")
+        raise
+
+
 def get_redis_settings() -> tuple[str, str]:
     """Get Redis settings from configuration.
     
@@ -288,8 +358,6 @@ async def get_layout() -> dict[str, Any]:
     Returns:
         dict: Layout configuration with rooms and device tiles
     """
-    from packages.home_capabilities import load_layout
-    
     try:
         layout = load_layout()
         
@@ -318,6 +386,23 @@ async def get_layout() -> dict[str, Any]:
         return {"rooms": []}
 
 
+@app.get("/devices/{device_id}/room")
+async def get_device_room(device_id: str) -> dict[str, str | None]:
+    """Get the room name for a specific device.
+    
+    Args:
+        device_id: Device identifier
+        
+    Returns:
+        dict: {"device_id": str, "room": str | null}
+    """
+    room = get_room(device_id)
+    return {
+        "device_id": device_id,
+        "room": room
+    }
+
+
 @app.post("/devices/{device_id}/set", status_code=status.HTTP_202_ACCEPTED)
 async def set_device(device_id: str, request: SetDeviceRequest) -> dict[str, str]:
     """Set device state.
@@ -358,6 +443,14 @@ async def set_device(device_id: str, request: SetDeviceRequest) -> dict[str, str
                 status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
                 detail=f"Invalid payload for light: {e}"
             )
+    elif request.type == "relay":
+        try:
+            RelayState(**request.payload)
+        except ValidationError as e:
+            raise HTTPException(
+                status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
+                detail=f"Invalid payload for relay: {e}"
+            )
     elif request.type == "thermostat":
         try:
             # For thermostat SET: only allow mode and target

apps/api/resolvers.py

@@ -0,0 +1,286 @@
+"""Group and scene resolution logic."""
+
+import logging
+from pathlib import Path
+from typing import Any, TypedDict
+
+from packages.home_capabilities import (
+    GroupConfig,
+    GroupsConfigRoot,
+    SceneStep,
+    get_group_by_id,
+    load_layout,
+)
+
+logger = logging.getLogger(__name__)
+
+
+# ============================================================================
+# TYPE DEFINITIONS
+# ============================================================================
+
+class DeviceDTO(TypedDict, total=False):
+    """Device Data Transfer Object.
+    
+    Represents a device as returned by /devices endpoint or load_devices().
+    
+    Required fields:
+        device_id: Unique device identifier
+        type: Device type (light, thermostat, relay, etc.)
+    
+    Optional fields:
+        name: Human-readable device name
+        features: Device capabilities (power, brightness, etc.)
+        technology: MQTT, zigbee2mqtt, simulator, etc.
+        topics: MQTT topic configuration
+        metadata: Additional device information
+    """
+    device_id: str
+    type: str
+    name: str
+    features: dict[str, Any]
+    technology: str
+    topics: dict[str, str]
+    metadata: dict[str, Any]
+
+
+# ============================================================================
+# DEVICE-ROOM MAPPING
+# ============================================================================
+
+# Global cache for device -> room mapping
+_device_room_cache: dict[str, str] = {}
+
+
+def load_device_rooms(path: str | Path | None = None) -> dict[str, str]:
+    """
+    Load device-to-room mapping from layout configuration.
+    
+    This function extracts a mapping of device_id -> room_name from the layout.yaml
+    file, which is useful for resolving selectors like {room: "Küche"}.
+    
+    Args:
+        path: Optional path to layout.yaml. If None, uses default path
+              (config/layout.yaml relative to workspace root)
+    
+    Returns:
+        Dictionary mapping device_id to room_name. Returns empty dict if:
+        - layout.yaml doesn't exist
+        - layout.yaml is malformed
+        - layout.yaml is empty
+        
+    Example:
+        >>> mapping = load_device_rooms()
+        >>> mapping['kueche_lampe1']
+        'Küche'
+    """
+    global _device_room_cache
+    
+    try:
+        # Load the layout using existing function
+        layout = load_layout(path)
+        
+        # Build device -> room mapping
+        device_rooms: dict[str, str] = {}
+        for room in layout.rooms:
+            for device in room.devices:
+                device_rooms[device.device_id] = room.name
+        
+        # Update global cache
+        _device_room_cache = device_rooms.copy()
+        
+        logger.info(f"Loaded device-room mapping: {len(device_rooms)} devices")
+        return device_rooms
+        
+    except (FileNotFoundError, ValueError, Exception) as e:
+        logger.warning(f"Failed to load device-room mapping: {e}")
+        logger.warning("Returning empty device-room mapping")
+        _device_room_cache = {}
+        return {}
+
+
+def get_room(device_id: str) -> str | None:
+    """
+    Get the room name for a given device ID.
+    
+    This function uses the cached device-room mapping loaded by load_device_rooms().
+    If the cache is empty, it will attempt to load it first.
+    
+    Args:
+        device_id: The device identifier to lookup
+        
+    Returns:
+        Room name if device is found, None otherwise
+        
+    Example:
+        >>> get_room('kueche_lampe1')
+        'Küche'
+        >>> get_room('nonexistent_device')
+        None
+    """
+    # Check if cache is populated
+    if not _device_room_cache:
+        logger.debug("Device-room cache empty, loading from layout...")
+        # Load mapping (this updates the global _device_room_cache)
+        load_device_rooms()
+    
+    # Access the cache after potential reload
+    return _device_room_cache.get(device_id)
+
+
+def clear_room_cache() -> None:
+    """
+    Clear the cached device-room mapping.
+    
+    This is useful for testing or when the layout configuration has changed
+    and needs to be reloaded.
+    """
+    _device_room_cache.clear()
+    logger.debug("Cleared device-room cache")
+
+
+# ============================================================================
+# GROUP & SCENE RESOLUTION
+# ============================================================================
+
+def resolve_group_devices(
+    group: GroupConfig,
+    devices: list[DeviceDTO],
+    device_rooms: dict[str, str]
+) -> list[DeviceDTO]:
+    """
+    Resolve devices for a group based on device_ids or selector.
+    
+    Args:
+        group: Group configuration with device_ids or selector
+        devices: List of all available devices
+        device_rooms: Mapping of device_id -> room_name
+        
+    Returns:
+        List of devices matching the group criteria (no duplicates)
+        
+    Example:
+        >>> # Group with explicit device_ids
+        >>> group = GroupConfig(id="test", name="Test", device_ids=["lamp1", "lamp2"])
+        >>> resolve_group_devices(group, all_devices, {})
+        [{"device_id": "lamp1", ...}, {"device_id": "lamp2", ...}]
+        
+        >>> # Group with selector (all lights in kitchen)
+        >>> group = GroupConfig(
+        ...     id="kitchen_lights",
+        ...     name="Kitchen Lights",
+        ...     selector=GroupSelector(type="light", room="Küche")
+        ... )
+        >>> resolve_group_devices(group, all_devices, device_rooms)
+        [{"device_id": "kueche_deckenlampe", ...}, ...]
+    """
+    # Case 1: Explicit device_ids
+    if group.device_ids:
+        device_id_set = set(group.device_ids)
+        return [d for d in devices if d["device_id"] in device_id_set]
+    
+    # Case 2: Selector-based filtering
+    if group.selector:
+        filtered = []
+        
+        for device in devices:
+            # Filter by type (required in selector)
+            if device["type"] != group.selector.type:
+                continue
+            
+            # Filter by room (optional)
+            if group.selector.room:
+                device_room = device_rooms.get(device["device_id"])
+                if device_room != group.selector.room:
+                    continue
+            
+            # Filter by tags (optional, future feature)
+            # if group.selector.tags:
+            #     device_tags = device.get("metadata", {}).get("tags", [])
+            #     if not any(tag in device_tags for tag in group.selector.tags):
+            #         continue
+            
+            filtered.append(device)
+        
+        return filtered
+    
+    # No device_ids and no selector → empty list
+    return []
+
+
+def resolve_scene_step_devices(
+    step: SceneStep,
+    groups_config: GroupsConfigRoot,
+    devices: list[DeviceDTO],
+    device_rooms: dict[str, str]
+) -> list[DeviceDTO]:
+    """
+    Resolve devices for a scene step based on group_id or selector.
+    
+    Args:
+        step: Scene step with group_id or selector
+        groups_config: Groups configuration for group lookup
+        devices: List of all available devices
+        device_rooms: Mapping of device_id -> room_name
+        
+    Returns:
+        List of devices matching the step criteria
+        
+    Raises:
+        ValueError: If group_id is specified but group not found
+        
+    Example:
+        >>> # Step with group_id
+        >>> step = SceneStep(group_id="kitchen_lights", action={...})
+        >>> resolve_scene_step_devices(step, groups_cfg, all_devices, device_rooms)
+        [{"device_id": "kueche_deckenlampe", ...}, ...]
+        
+        >>> # Step with selector
+        >>> step = SceneStep(
+        ...     selector=SceneSelector(type="light", room="Küche"),
+        ...     action={...}
+        ... )
+        >>> resolve_scene_step_devices(step, groups_cfg, all_devices, device_rooms)
+        [{"device_id": "kueche_deckenlampe", ...}, ...]
+    """
+    # Case 1: Group reference
+    if step.group_id:
+        # Look up the group
+        group = get_group_by_id(groups_config, step.group_id)
+        
+        if not group:
+            raise ValueError(
+                f"Scene step references unknown group_id: '{step.group_id}'. "
+                f"Available groups: {[g.id for g in groups_config.groups]}"
+            )
+        
+        # Resolve the group's devices
+        return resolve_group_devices(group, devices, device_rooms)
+    
+    # Case 2: Direct selector
+    if step.selector:
+        filtered = []
+        
+        for device in devices:
+            # Filter by type (optional in scene selector)
+            if step.selector.type and device["type"] != step.selector.type:
+                continue
+            
+            # Filter by room (optional)
+            if step.selector.room:
+                device_room = device_rooms.get(device["device_id"])
+                if device_room != step.selector.room:
+                    continue
+            
+            # Filter by tags (optional, future feature)
+            # if step.selector.tags:
+            #     device_tags = device.get("metadata", {}).get("tags", [])
+            #     if not any(tag in device_tags for tag in step.selector.tags):
+            #         continue
+            
+            filtered.append(device)
+        
+        return filtered
+    
+    # Should not reach here due to SceneStep validation (must have group_id or selector)
+    return []

apps/api/routes/__init__.py

@@ -0,0 +1 @@
+"""API routes package."""

apps/api/routes/groups_scenes.py

@@ -0,0 +1,454 @@
+"""Groups and Scenes API routes."""
+
+import asyncio
+import logging
+from pathlib import Path
+from typing import Any
+
+from fastapi import APIRouter, HTTPException, status
+from pydantic import BaseModel
+
+from packages.home_capabilities import (
+    GroupConfig,
+    GroupsConfigRoot,
+    SceneConfig,
+    ScenesConfigRoot,
+    get_group_by_id,
+    get_scene_by_id,
+    load_groups,
+    load_scenes,
+)
+
+# Import from parent modules
+import sys
+sys.path.insert(0, str(Path(__file__).parent.parent))
+from resolvers import (
+    DeviceDTO,
+    resolve_group_devices,
+    resolve_scene_step_devices,
+    load_device_rooms,
+)
+from main import load_devices, publish_abstract_set
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter()
+
+
+# ============================================================================
+# REQUEST/RESPONSE MODELS
+# ============================================================================
+
+class GroupResponse(BaseModel):
+    """Response model for a group."""
+    id: str
+    name: str
+    device_count: int
+    devices: list[str]
+    selector: dict[str, Any] | None = None
+    capabilities: dict[str, bool]
+
+
+class GroupSetRequest(BaseModel):
+    """Request to set state for all devices in a group."""
+    action: dict[str, Any]  # e.g., {"type": "light", "payload": {"power": "on", "brightness": 50}}
+
+
+class SceneResponse(BaseModel):
+    """Response model for a scene."""
+    id: str
+    name: str
+    steps: int
+
+
+class SceneRunRequest(BaseModel):
+    """Request to execute a scene (currently empty, future: override params)."""
+    pass
+
+
+class SceneExecutionResponse(BaseModel):
+    """Response after scene execution."""
+    scene_id: str
+    scene_name: str
+    steps_executed: int
+    devices_affected: int
+    execution_plan: list[dict[str, Any]]
+
+
+# ============================================================================
+# GROUPS ENDPOINTS
+# ============================================================================
+
+@router.get("/groups", response_model=list[GroupResponse], tags=["groups"])
+async def list_groups() -> list[GroupResponse]:
+    """
+    List all available groups.
+    
+    Returns:
+        list[GroupResponse]: List of groups with their devices
+    """
+    try:
+        # Load configuration
+        groups_config = load_groups(Path(__file__).parent.parent.parent.parent / "config" / "groups.yaml")
+        devices = load_devices()
+        device_rooms = load_device_rooms()
+        
+        # Build response for each group
+        response = []
+        for group in groups_config.groups:
+            # Resolve devices for this group
+            resolved_devices = resolve_group_devices(group, devices, device_rooms)
+            device_ids = [d["device_id"] for d in resolved_devices]
+            
+            # Convert selector to dict if present
+            selector_dict = None
+            if group.selector:
+                selector_dict = {
+                    "type": group.selector.type,
+                    "room": group.selector.room,
+                    "tags": group.selector.tags,
+                }
+            
+            response.append(GroupResponse(
+                id=group.id,
+                name=group.name,
+                device_count=len(device_ids),
+                devices=device_ids,
+                selector=selector_dict,
+                capabilities=group.capabilities,
+            ))
+        
+        return response
+        
+    except Exception as e:
+        logger.error(f"Error loading groups: {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"Failed to load groups: {str(e)}"
+        )
+
+
+@router.get("/groups/{group_id}", response_model=GroupResponse, tags=["groups"])
+async def get_group(group_id: str) -> GroupResponse:
+    """
+    Get details for a specific group.
+    
+    Args:
+        group_id: Group identifier
+        
+    Returns:
+        GroupResponse: Group details with resolved devices
+    """
+    try:
+        # Load configuration
+        groups_config = load_groups(Path(__file__).parent.parent.parent.parent / "config" / "groups.yaml")
+        devices = load_devices()
+        device_rooms = load_device_rooms()
+        
+        # Find the group
+        group = get_group_by_id(groups_config, group_id)
+        if not group:
+            available_groups = [g.id for g in groups_config.groups]
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail=f"Group '{group_id}' not found. Available groups: {available_groups}"
+            )
+        
+        # Resolve devices
+        resolved_devices = resolve_group_devices(group, devices, device_rooms)
+        device_ids = [d["device_id"] for d in resolved_devices]
+        
+        # Convert selector to dict if present
+        selector_dict = None
+        if group.selector:
+            selector_dict = {
+                "type": group.selector.type,
+                "room": group.selector.room,
+                "tags": group.selector.tags,
+            }
+        
+        return GroupResponse(
+            id=group.id,
+            name=group.name,
+            device_count=len(device_ids),
+            devices=device_ids,
+            selector=selector_dict,
+            capabilities=group.capabilities,
+        )
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"Error getting group {group_id}: {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"Failed to get group: {str(e)}"
+        )
+
+
+@router.post("/groups/{group_id}/set", status_code=status.HTTP_202_ACCEPTED, tags=["groups"])
+async def set_group(group_id: str, request: GroupSetRequest) -> dict[str, Any]:
+    """
+    Set state for all devices in a group.
+    
+    This endpoint resolves the group to its devices and would send
+    the action to each device. Currently returns execution plan.
+    
+    Args:
+        group_id: Group identifier
+        request: Action to apply to all devices in the group
+        
+    Returns:
+        dict: Execution plan (devices and actions to be executed)
+    """
+    try:
+        # Load configuration
+        groups_config = load_groups(Path(__file__).parent.parent.parent.parent / "config" / "groups.yaml")
+        devices = load_devices()
+        device_rooms = load_device_rooms()
+        
+        # Find the group
+        group = get_group_by_id(groups_config, group_id)
+        if not group:
+            available_groups = [g.id for g in groups_config.groups]
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail=f"Group '{group_id}' not found. Available groups: {available_groups}"
+            )
+        
+        # Resolve devices
+        resolved_devices = resolve_group_devices(group, devices, device_rooms)
+        
+        if not resolved_devices:
+            logger.warning(f"Group '{group_id}' resolved to 0 devices")
+        
+        # Execute actions via MQTT
+        execution_plan = []
+        for device in resolved_devices:
+            device_type = device["type"]
+            device_id = device["device_id"]
+            payload = request.action.get("payload", {})
+            
+            # Publish MQTT command
+            try:
+                await publish_abstract_set(device_type, device_id, payload)
+                execution_plan.append({
+                    "device_id": device_id,
+                    "device_type": device_type,
+                    "action": request.action,
+                    "status": "published"
+                })
+            except Exception as e:
+                logger.error(f"Failed to publish to {device_id}: {e}")
+                execution_plan.append({
+                    "device_id": device_id,
+                    "device_type": device_type,
+                    "action": request.action,
+                    "status": "failed",
+                    "error": str(e)
+                })
+        
+        return {
+            "group_id": group_id,
+            "group_name": group.name,
+            "devices_affected": len(resolved_devices),
+            "execution_plan": execution_plan,
+            "status": "executed"
+        }
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"Error setting group {group_id}: {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"Failed to set group: {str(e)}"
+        )
+
+
+# ============================================================================
+# SCENES ENDPOINTS
+# ============================================================================
+
+@router.get("/scenes", response_model=list[SceneResponse], tags=["scenes"])
+async def list_scenes() -> list[SceneResponse]:
+    """
+    List all available scenes.
+    
+    Returns:
+        list[SceneResponse]: List of scenes
+    """
+    try:
+        # Load configuration
+        scenes_config = load_scenes(Path(__file__).parent.parent.parent.parent / "config" / "scenes.yaml")
+        
+        # Build response for each scene
+        response = []
+        for scene in scenes_config.scenes:
+            response.append(SceneResponse(
+                id=scene.id,
+                name=scene.name,
+                steps=len(scene.steps),
+            ))
+        
+        return response
+        
+    except Exception as e:
+        logger.error(f"Error loading scenes: {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"Failed to load scenes: {str(e)}"
+        )
+
+
+@router.get("/scenes/{scene_id}", response_model=SceneResponse, tags=["scenes"])
+async def get_scene(scene_id: str) -> SceneResponse:
+    """
+    Get details for a specific scene.
+    
+    Args:
+        scene_id: Scene identifier
+        
+    Returns:
+        SceneResponse: Scene details
+    """
+    try:
+        # Load configuration
+        scenes_config = load_scenes(Path(__file__).parent.parent.parent.parent / "config" / "scenes.yaml")
+        
+        # Find the scene
+        scene = get_scene_by_id(scenes_config, scene_id)
+        if not scene:
+            available_scenes = [s.id for s in scenes_config.scenes]
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail=f"Scene '{scene_id}' not found. Available scenes: {available_scenes}"
+            )
+        
+        return SceneResponse(
+            id=scene.id,
+            name=scene.name,
+            steps=len(scene.steps),
+        )
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"Error getting scene {scene_id}: {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"Failed to get scene: {str(e)}"
+        )
+
+
+@router.post("/scenes/{scene_id}/run", response_model=SceneExecutionResponse, tags=["scenes"])
+async def run_scene(scene_id: str, request: SceneRunRequest | None = None) -> SceneExecutionResponse:
+    """
+    Execute a scene.
+    
+    This endpoint resolves each step in the scene to its target devices
+    and would execute the actions. Currently returns execution plan.
+    
+    Args:
+        scene_id: Scene identifier
+        request: Optional execution parameters (reserved for future use)
+        
+    Returns:
+        SceneExecutionResponse: Execution plan and summary
+    """
+    try:
+        # Load configuration
+        scenes_config = load_scenes(Path(__file__).parent.parent.parent.parent / "config" / "scenes.yaml")
+        groups_config = load_groups(Path(__file__).parent.parent.parent.parent / "config" / "groups.yaml")
+        devices = load_devices()
+        device_rooms = load_device_rooms()
+        
+        # Find the scene
+        scene = get_scene_by_id(scenes_config, scene_id)
+        if not scene:
+            available_scenes = [s.id for s in scenes_config.scenes]
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail=f"Scene '{scene_id}' not found. Available scenes: {available_scenes}"
+            )
+        
+        # Execute scene steps
+        execution_plan = []
+        total_devices = 0
+        
+        for i, step in enumerate(scene.steps, 1):
+            # Resolve devices for this step
+            resolved_devices = resolve_scene_step_devices(step, groups_config, devices, device_rooms)
+            total_devices += len(resolved_devices)
+            
+            # Extract action payload
+            action_payload = step.action.get("payload", {})
+            
+            # Execute for each device
+            step_executions = []
+            for device in resolved_devices:
+                device_type = device["type"]
+                device_id = device["device_id"]
+                
+                try:
+                    await publish_abstract_set(device_type, device_id, action_payload)
+                    step_executions.append({
+                        "device_id": device_id,
+                        "status": "published"
+                    })
+                except Exception as e:
+                    logger.error(f"Failed to publish to {device_id} in step {i}: {e}")
+                    step_executions.append({
+                        "device_id": device_id,
+                        "status": "failed",
+                        "error": str(e)
+                    })
+            
+            # Build step info
+            step_info = {
+                "step": i,
+                "devices_affected": len(resolved_devices),
+                "device_ids": [d["device_id"] for d in resolved_devices],
+                "action": step.action,
+                "executions": step_executions,
+            }
+            
+            # Add targeting info
+            if step.group_id:
+                step_info["target"] = {"type": "group_id", "value": step.group_id}
+            elif step.selector:
+                step_info["target"] = {
+                    "type": "selector",
+                    "selector_type": step.selector.type,
+                    "room": step.selector.room,
+                }
+            
+            if step.delay_ms:
+                step_info["delay_ms"] = step.delay_ms
+                # Apply delay before next step
+                await asyncio.sleep(step.delay_ms / 1000.0)
+            
+            execution_plan.append(step_info)
+        
+        return SceneExecutionResponse(
+            scene_id=scene.id,
+            scene_name=scene.name,
+            steps_executed=len(scene.steps),
+            devices_affected=total_devices,
+            execution_plan=execution_plan,
+        )
+        
+    except HTTPException:
+        raise
+    except ValueError as e:
+        # Handle unknown group_id in scene step
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=str(e)
+        )
+    except Exception as e:
+        logger.error(f"Error running scene {scene_id}: {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"Failed to run scene: {str(e)}"
+        )

apps/rules/Dockerfile

@@ -0,0 +1,53 @@
+# Rules Engine Dockerfile
+# Event-driven automation rules processor with MQTT and Redis
+
+FROM python:3.14-alpine
+
+# Prevent Python from writing .pyc files and enable unbuffered output
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    RULES_CONFIG=config/rules.yaml \
+    MQTT_BROKER=172.16.2.16 \
+    MQTT_PORT=1883 \
+    REDIS_HOST=localhost \
+    REDIS_PORT=6379 \
+    REDIS_DB=8 \
+    LOG_LEVEL=INFO
+
+# Create non-root user
+RUN addgroup -g 10001 -S app && \
+    adduser -u 10001 -S app -G app
+
+# Set working directory
+WORKDIR /app
+
+# Install system dependencies
+RUN apk add --no-cache \
+    gcc \
+    musl-dev \
+    linux-headers
+
+# Install Python dependencies
+COPY apps/rules/requirements.txt /app/requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY apps/__init__.py /app/apps/
+COPY apps/rules/ /app/apps/rules/
+COPY packages/ /app/packages/
+COPY config/ /app/config/
+
+# Change ownership to non-root user
+RUN chown -R app:app /app
+
+# Switch to non-root user
+USER app
+
+# Expose no ports (MQTT/Redis client only)
+
+# Health check (check if process is running)
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD pgrep -f "apps.rules.main" || exit 1
+
+# Run the rules engine
+CMD ["python", "-m", "apps.rules.main"]

apps/rules/RULE_INTERFACE.md

@@ -0,0 +1,371 @@
+# Rule Interface Documentation
+
+## Overview
+
+The rule interface provides a clean abstraction for implementing automation rules. Rules respond to device state changes and can publish commands, persist state, and log diagnostics.
+
+## Core Components
+
+### 1. RuleDescriptor
+
+Configuration data for a rule instance (loaded from `rules.yaml`):
+
+```python
+RuleDescriptor(
+    id="window_setback_wohnzimmer",           # Unique rule ID
+    name="Fensterabsenkung Wohnzimmer",       # Optional display name
+    type="window_setback@1.0",                # Rule type + version
+    targets={                                  # Rule-specific targets
+        "rooms": ["Wohnzimmer"],
+        "contacts": ["kontakt_wohnzimmer_..."],
+        "thermostats": ["thermostat_wohnzimmer"]
+    },
+    params={                                   # Rule-specific parameters
+        "eco_target": 16.0,
+        "open_min_secs": 20
+    }
+)
+```
+
+### 2. RedisState
+
+Async state persistence with automatic reconnection and retry logic:
+
+```python
+# Initialize (done by rule engine)
+redis_state = RedisState("redis://172.23.1.116:6379/8")
+
+# Simple key-value with TTL
+await ctx.redis.set("rules:my_rule:temp", "22.5", ttl_secs=3600)
+value = await ctx.redis.get("rules:my_rule:temp")  # Returns "22.5" or None
+
+# Hash storage (for multiple related values)
+await ctx.redis.hset("rules:my_rule:sensors", "bedroom", "open")
+await ctx.redis.hset("rules:my_rule:sensors", "kitchen", "closed")
+value = await ctx.redis.hget("rules:my_rule:sensors", "bedroom")  # "open"
+
+# TTL management
+await ctx.redis.expire("rules:my_rule:temp", 7200)  # Extend to 2 hours
+
+# JSON helpers (for complex data)
+import json
+data = {"temp": 22.5, "humidity": 45}
+await ctx.redis.set("rules:my_rule:data", ctx.redis._dumps(data))
+stored = await ctx.redis.get("rules:my_rule:data")
+parsed = ctx.redis._loads(stored) if stored else None
+```
+
+**Key Conventions:**
+- Use prefix `rules:{rule_id}:` for all keys
+- Example: `rules:window_setback_wohnzimmer:thermo:device_123:previous`
+- TTL recommended for temporary state (previous temperatures, timers)
+
+**Robustness Features:**
+- Automatic retry with exponential backoff (default: 3 retries)
+- Connection pooling (max 10 connections)
+- Automatic reconnection on Redis restart
+- Health checks every 30 seconds
+- All operations wait and retry, no exceptions on temporary outages
+
+### 3. MQTTClient
+
+Async MQTT client with event normalization and command publishing:
+
+```python
+# Initialize (done by rule engine)
+mqtt_client = MQTTClient(
+    broker="172.16.2.16",
+    port=1883,
+    client_id="rule_engine"
+)
+
+# Subscribe and receive normalized events
+async for event in mqtt_client.connect():
+    # Event structure:
+    # {
+    #     "topic": "home/contact/sensor_1/state",
+    #     "type": "state",
+    #     "cap": "contact",           # Capability (contact, thermostat, etc.)
+    #     "device_id": "sensor_1",
+    #     "payload": {"contact": "open"},
+    #     "ts": "2025-11-11T10:30:45.123456"
+    # }
+    
+    if event['cap'] == 'contact':
+        handle_contact(event)
+    elif event['cap'] == 'thermostat':
+        handle_thermostat(event)
+
+# Publish commands (within async context)
+await mqtt_client.publish_set_thermostat("thermostat_id", 22.5)
+```
+
+**Subscriptions:**
+- `home/contact/+/state` - All contact sensor state changes
+- `home/thermostat/+/state` - All thermostat state changes
+
+**Publishing:**
+- Topic: `home/thermostat/{device_id}/set`
+- Payload: `{"type":"thermostat","payload":{"target":22.5}}`
+- QoS: 1 (at least once delivery)
+
+**Robustness:**
+- Automatic reconnection with exponential backoff
+- Connection logging (connect/disconnect events)
+- Clean session handling
+
+### 4. MQTTPublisher (Legacy)
+
+Simplified wrapper around MQTTClient for backward compatibility:
+
+```python
+# Set thermostat temperature
+await ctx.mqtt.publish_set_thermostat("thermostat_wohnzimmer", 21.5)
+```
+
+### 5. RuleContext
+
+Runtime context provided to rules:
+
+```python
+class RuleContext:
+    logger           # Logger instance
+    mqtt             # MQTTPublisher
+    redis            # RedisState
+    now() -> datetime  # Current timestamp
+```
+
+### 5. Rule Abstract Base Class
+
+All rules extend this:
+
+```python
+class MyRule(Rule):
+    async def on_event(self, evt: dict, desc: RuleDescriptor, ctx: RuleContext) -> None:
+        # Event structure:
+        # {
+        #     "topic": "home/contact/device_id/state",
+        #     "type": "state",
+        #     "cap": "contact",
+        #     "device_id": "kontakt_wohnzimmer",
+        #     "payload": {"contact": "open"},
+        #     "ts": "2025-11-11T10:30:45.123456"
+        # }
+        
+        device_id = evt['device_id']
+        cap = evt['cap']
+        
+        if cap == 'contact':
+            contact_state = evt['payload'].get('contact')
+            # ... implement logic
+```
+
+## Implementing a New Rule
+
+### Step 1: Create Rule Class
+
+```python
+from packages.rule_interface import Rule, RuleDescriptor, RuleContext
+from typing import Any
+
+class MyCustomRule(Rule):
+    """My custom automation rule."""
+    
+    async def on_event(
+        self,
+        evt: dict[str, Any],
+        desc: RuleDescriptor,
+        ctx: RuleContext
+    ) -> None:
+        """Process device state changes."""
+        
+        # 1. Extract event data
+        device_id = evt['device_id']
+        cap = evt['cap']
+        payload = evt['payload']
+        
+        # 2. Filter to relevant devices
+        if device_id not in desc.targets.get('my_devices', []):
+            return
+        
+        # 3. Implement logic
+        if cap == 'contact':
+            if payload.get('contact') == 'open':
+                # Do something
+                await ctx.mqtt.publish_set_thermostat(
+                    'some_thermostat',
+                    desc.params.get('temp', 20.0)
+                )
+        
+        # 4. Persist state if needed
+        state_key = f"rule:{desc.id}:device:{device_id}:state"
+        await ctx.redis.set(state_key, payload.get('contact'))
+```
+
+### Step 2: Register in RULE_IMPLEMENTATIONS
+
+```python
+# In your rule module (e.g., my_custom_rule.py)
+RULE_IMPLEMENTATIONS = {
+    'my_custom@1.0': MyCustomRule,
+}
+```
+
+### Step 3: Configure in rules.yaml
+
+```yaml
+rules:
+  - id: my_custom_living_room
+    name: My Custom Rule for Living Room
+    type: my_custom@1.0
+    targets:
+      my_devices:
+        - device_1
+        - device_2
+    params:
+      temp: 22.0
+      duration_secs: 300
+```
+
+## Best Practices
+
+### Idempotency
+
+Rules MUST be idempotent - processing the same event multiple times should be safe:
+
+```python
+# Good: Idempotent
+async def on_event(self, evt, desc, ctx):
+    if evt['payload'].get('contact') == 'open':
+        await ctx.mqtt.publish_set_thermostat('thermo', 16.0)
+
+# Bad: Not idempotent (increments counter)
+async def on_event(self, evt, desc, ctx):
+    counter = await ctx.redis.get('counter') or '0'
+    await ctx.redis.set('counter', str(int(counter) + 1))
+```
+
+### Error Handling
+
+Handle errors gracefully - the engine will catch and log exceptions:
+
+```python
+async def on_event(self, evt, desc, ctx):
+    try:
+        await ctx.mqtt.publish_set_thermostat('thermo', 16.0)
+    except Exception as e:
+        ctx.logger.error(f"Failed to set thermostat: {e}")
+        # Don't raise - let event processing continue
+```
+
+### State Keys
+
+Use consistent naming for Redis keys:
+
+```python
+# Pattern: rule:{rule_id}:{category}:{device_id}:{field}
+state_key = f"rule:{desc.id}:contact:{device_id}:state"
+ts_key = f"rule:{desc.id}:contact:{device_id}:ts"
+prev_key = f"rule:{desc.id}:thermo:{device_id}:previous"
+```
+
+### Logging
+
+Use appropriate log levels:
+
+```python
+ctx.logger.debug("Detailed diagnostic info")
+ctx.logger.info("Normal operation milestones")
+ctx.logger.warning("Unexpected but handled situations")
+ctx.logger.error("Errors that prevent operation")
+```
+
+## Event Structure Reference
+
+### Contact Sensor Event
+
+```python
+{
+    "topic": "home/contact/kontakt_wohnzimmer/state",
+    "type": "state",
+    "cap": "contact",
+    "device_id": "kontakt_wohnzimmer",
+    "payload": {
+        "contact": "open"  # or "closed"
+    },
+    "ts": "2025-11-11T10:30:45.123456"
+}
+```
+
+### Thermostat Event
+
+```python
+{
+    "topic": "home/thermostat/thermostat_wohnzimmer/state",
+    "type": "state",
+    "cap": "thermostat",
+    "device_id": "thermostat_wohnzimmer",
+    "payload": {
+        "target": 21.0,
+        "current": 20.5,
+        "mode": "heat"
+    },
+    "ts": "2025-11-11T10:30:45.123456"
+}
+```
+
+## Testing Rules
+
+Rules can be tested independently of the engine:
+
+```python
+import pytest
+from unittest.mock import AsyncMock, MagicMock
+from packages.my_custom_rule import MyCustomRule
+from packages.rule_interface import RuleDescriptor, RuleContext
+
+@pytest.mark.asyncio
+async def test_my_rule():
+    # Setup
+    rule = MyCustomRule()
+    
+    desc = RuleDescriptor(
+        id="test_rule",
+        type="my_custom@1.0",
+        targets={"my_devices": ["device_1"]},
+        params={"temp": 22.0}
+    )
+    
+    # Mock context
+    ctx = RuleContext(
+        logger=MagicMock(),
+        mqtt_publisher=AsyncMock(),
+        redis_state=AsyncMock(),
+        now_fn=lambda: datetime.now()
+    )
+    
+    # Test event
+    evt = {
+        "device_id": "device_1",
+        "cap": "contact",
+        "payload": {"contact": "open"},
+        "ts": "2025-11-11T10:30:45.123456"
+    }
+    
+    # Execute
+    await rule.on_event(evt, desc, ctx)
+    
+    # Assert
+    ctx.mqtt.publish_set_thermostat.assert_called_once_with('some_thermostat', 22.0)
+```
+
+## Extension Points
+
+The interface is designed to be extended without modifying the engine:
+
+1. **New rule types**: Just implement `Rule` and register in `RULE_IMPLEMENTATIONS`
+2. **New MQTT commands**: Extend `MQTTPublisher` with new methods
+3. **New state backends**: Implement `RedisState` interface with different storage
+4. **Custom context**: Extend `RuleContext` with additional utilities
+
+The engine only depends on the abstract interfaces, not specific implementations.

apps/rules/impl/__init__.py

@@ -0,0 +1,15 @@
+"""
+Rule Implementations Package
+
+This package contains all rule implementation modules.
+
+Naming Convention:
+- Module name: snake_case matching the rule type name
+  Example: window_setback.py for type 'window_setback@1.0'
+  
+- Class name: PascalCase + 'Rule' suffix
+  Example: WindowSetbackRule
+  
+The rule engine uses load_rule() from rule_interface to dynamically
+import modules from this package based on the 'type' field in rules.yaml.
+"""

apps/rules/impl/window_setback.py

@@ -0,0 +1,256 @@
+"""
+Example Rule Implementation: Window Setback
+
+Demonstrates how to implement a Rule using the rule_interface.
+This rule lowers thermostat temperature when a window is opened.
+"""
+
+from typing import Any
+
+from pydantic import BaseModel, Field, ValidationError
+
+from apps.rules.rule_interface import Rule, RuleDescriptor, RuleContext
+
+
+class WindowSetbackObjects(BaseModel):
+    """Object structure for window setback rule"""
+    contacts: list[str] = Field(..., min_length=1, description="Contact sensors to monitor")
+    thermostats: list[str] = Field(..., min_length=1, description="Thermostats to control")
+
+
+class WindowSetbackRule(Rule):
+    """
+    Window setback automation rule.
+    
+    When a window/door contact opens, set thermostats to eco temperature.
+    When closed for a minimum duration, restore previous target temperature.
+    
+    Configuration:
+        objects:
+            contacts: List of contact sensor device IDs to monitor (required, min 1)
+            thermostats: List of thermostat device IDs to control (required, min 1)
+        params:
+            eco_target: Temperature to set when window opens (default: 16.0)
+            open_min_secs: Minimum seconds window must be open before triggering (default: 20)
+            close_min_secs: Minimum seconds window must be closed before restoring (default: 20)
+            previous_target_ttl_secs: How long to remember previous temperature (default: 86400)
+    
+    State storage (Redis keys):
+        rule:{rule_id}:contact:{device_id}:state -> "open" | "closed"
+        rule:{rule_id}:contact:{device_id}:ts -> ISO timestamp of last change
+        rule:{rule_id}:thermo:{device_id}:current_target -> Current target temp (updated on every STATE)
+        rule:{rule_id}:thermo:{device_id}:previous -> Previous target temp (saved on window open, deleted on restore)
+    
+    Logic:
+        1. Thermostat STATE events → update current_target in Redis
+        2. Window opens → copy current_target to previous, then set to eco_target
+        3. Window closes → restore from previous, then delete previous key
+    """
+    
+    def __init__(self):
+        super().__init__()
+        self._validated_objects: dict[str, WindowSetbackObjects] = {}
+    
+    async def setup(self, desc: RuleDescriptor, ctx: RuleContext) -> None:
+        """Validate objects structure during setup"""
+        try:
+            validated = WindowSetbackObjects(**desc.objects)
+            self._validated_objects[desc.id] = validated
+            ctx.logger.info(
+                f"Rule {desc.id} validated: {len(validated.contacts)} contacts, "
+                f"{len(validated.thermostats)} thermostats"
+            )
+        except ValidationError as e:
+            raise ValueError(
+                f"Invalid objects configuration for rule {desc.id}: {e}"
+            ) from e
+    
+    def get_subscriptions(self, desc: RuleDescriptor) -> list[str]:
+        """
+        Return MQTT topics to subscribe to.
+        
+        Subscribe to:
+        - Contact sensor state changes (to detect window open/close)
+        - Thermostat state changes (to track current target temperature)
+        """
+        topics = []
+        
+        # Subscribe to contact sensors
+        contacts = desc.objects.get('contacts', [])
+        for contact_id in contacts:
+            topics.append(f"home/contact/{contact_id}/state")
+        
+        # Subscribe to thermostats to track their current target temperature
+        thermostats = desc.objects.get('thermostats', [])
+        for thermo_id in thermostats:
+            topics.append(f"home/thermostat/{thermo_id}/state")
+        
+        return topics
+    
+    async def on_event(
+        self,
+        evt: dict[str, Any],
+        desc: RuleDescriptor,
+        ctx: RuleContext
+    ) -> None:
+        """
+        Process contact sensor or thermostat state changes.
+        
+        Logic:
+        1. If contact opened → remember current thermostat targets, set to eco
+        2. If contact closed for min_secs → restore previous targets
+        3. If thermostat target changed → update stored previous value
+        """
+        device_id = evt['device_id']
+        cap = evt['cap']
+        payload = evt['payload']
+        
+        # Only process events for devices in our objects
+        target_contacts = desc.objects.get('contacts', [])
+        target_thermostats = desc.objects.get('thermostats', [])
+        
+        if cap == 'contact' and device_id in target_contacts:
+            await self._handle_contact_event(evt, desc, ctx)
+        
+        elif cap == 'thermostat' and device_id in target_thermostats:
+            await self._handle_thermostat_event(evt, desc, ctx)
+    
+    async def _handle_contact_event(
+        self,
+        evt: dict[str, Any],
+        desc: RuleDescriptor,
+        ctx: RuleContext
+    ) -> None:
+        """Handle contact sensor state change."""
+        device_id = evt['device_id']
+        contact_state = evt['payload'].get('contact')  # "open" or "closed"
+        event_ts = evt.get('ts', ctx.now().isoformat())
+        
+        if not contact_state:
+            ctx.logger.warning(f"Contact event missing 'contact' field: {evt}")
+            return
+        
+        # Store current state and timestamp
+        state_key = f"rule:{desc.id}:contact:{device_id}:state"
+        ts_key = f"rule:{desc.id}:contact:{device_id}:ts"
+        
+        await ctx.redis.set(state_key, contact_state)
+        await ctx.redis.set(ts_key, event_ts)
+        
+        if contact_state == 'open':
+            await self._on_window_opened(desc, ctx)
+        elif contact_state == 'closed':
+            await self._on_window_closed(desc, ctx)
+    
+    async def _on_window_opened(self, desc: RuleDescriptor, ctx: RuleContext) -> None:
+        """
+        Window opened - save current temperatures, then set thermostats to eco.
+        
+        Important: We must save the current target BEFORE setting to eco,
+        otherwise we'll save the eco temperature instead of the original.
+        """
+        eco_target = desc.params.get('eco_target', 16.0)
+        target_thermostats = desc.objects.get('thermostats', [])
+        ttl_secs = desc.params.get('previous_target_ttl_secs', 86400)
+        
+        ctx.logger.info(
+            f"Rule {desc.id}: Window opened, setting {len(target_thermostats)} "
+            f"thermostats to eco temperature {eco_target}°C"
+        )
+        
+        # FIRST: Save current target temperatures as "previous" (before we change them!)
+        for thermo_id in target_thermostats:
+            current_key = f"rule:{desc.id}:thermo:{thermo_id}:current_target"
+            current_temp_str = await ctx.redis.get(current_key)
+            
+            if current_temp_str:
+                # Save current as previous (with TTL)
+                prev_key = f"rule:{desc.id}:thermo:{thermo_id}:previous"
+                await ctx.redis.set(prev_key, current_temp_str, ttl_secs=ttl_secs)
+                ctx.logger.debug(
+                    f"Saved previous target for {thermo_id}: {current_temp_str}°C"
+                )
+            else:
+                ctx.logger.warning(
+                    f"No current target found for {thermo_id}, cannot save previous"
+                )
+        
+        # THEN: Set all thermostats to eco temperature
+        for thermo_id in target_thermostats:
+            try:
+                await ctx.mqtt.publish_set_thermostat(thermo_id, eco_target)
+                ctx.logger.debug(f"Set {thermo_id} to {eco_target}°C")
+            except Exception as e:
+                ctx.logger.error(f"Failed to set {thermo_id}: {e}")
+    
+    async def _on_window_closed(self, desc: RuleDescriptor, ctx: RuleContext) -> None:
+        """
+        Window closed - restore previous temperatures.
+        
+        Note: This is simplified. A production implementation would check
+        close_min_secs and use a timer/scheduler.
+        """
+        target_thermostats = desc.objects.get('thermostats', [])
+        
+        ctx.logger.info(
+            f"Rule {desc.id}: Window closed, restoring {len(target_thermostats)} "
+            f"thermostats to previous temperatures"
+        )
+        
+        # Restore previous temperatures
+        for thermo_id in target_thermostats:
+            prev_key = f"rule:{desc.id}:thermo:{thermo_id}:previous"
+            prev_temp_str = await ctx.redis.get(prev_key)
+            
+            if prev_temp_str:
+                try:
+                    prev_temp = float(prev_temp_str)
+                    await ctx.mqtt.publish_set_thermostat(thermo_id, prev_temp)
+                    ctx.logger.debug(f"Restored {thermo_id} to {prev_temp}°C")
+                    
+                    # Delete the previous key after restoring
+                    await ctx.redis.delete(prev_key)
+                except Exception as e:
+                    ctx.logger.error(f"Failed to restore {thermo_id}: {e}")
+            else:
+                ctx.logger.warning(
+                    f"No previous target found for {thermo_id}, cannot restore"
+                )
+    
+    async def _handle_thermostat_event(
+        self,
+        evt: dict[str, Any],
+        desc: RuleDescriptor,
+        ctx: RuleContext
+    ) -> None:
+        """
+        Handle thermostat state change - track current target temperature.
+        
+        This keeps a record of the thermostat's current target, so we can
+        save it as "previous" when a window opens.
+        
+        Important: We store in "current_target", NOT "previous". The "previous"
+        key is only written when a window opens, to avoid race conditions.
+        """
+        device_id = evt['device_id']
+        payload = evt['payload']
+        current_target = payload.get('target')
+        
+        if current_target is None:
+            return  # No target in this state update
+        
+        # Store current target (always update, even if it's the eco temperature)
+        current_key = f"rule:{desc.id}:thermo:{device_id}:current_target"
+        ttl_secs = desc.params.get('previous_target_ttl_secs', 86400)
+        
+        await ctx.redis.set(current_key, str(current_target), ttl_secs=ttl_secs)
+        
+        ctx.logger.debug(
+            f"Rule {desc.id}: Updated current target for {device_id}: {current_target}°C"
+        )
+
+
+# Rule registry - maps rule type to implementation class
+RULE_IMPLEMENTATIONS = {
+    'window_setback@1.0': WindowSetbackRule,
+}

apps/rules/main.py

@@ -1,83 +1,374 @@
-"""Rules main entry point."""
+"""
+Rules Engine
 
+Loads rules configuration, subscribes to MQTT events, and dispatches events
+to registered rule implementations.
+"""
+
+import asyncio
 import logging
+import os
 import signal
 import sys
-import time
-from typing import NoReturn
+from datetime import datetime
+from typing import Any
 
-from apscheduler.schedulers.background import BackgroundScheduler
+from apps.rules.rules_config import load_rules_config
+from apps.rules.rule_interface import (
+    RuleDescriptor,
+    RuleContext,
+    MQTTClient,
+    RedisState,
+    load_rule
+)
 
 # Configure logging
 logging.basicConfig(
-    level=logging.INFO,
+    level=logging.DEBUG,
     format="%(asctime)s - %(name)s - %(levelname)s - %(message)s"
 )
 logger = logging.getLogger(__name__)
 
-# Global scheduler instance
-scheduler: BackgroundScheduler | None = None
 
-
-def rule_tick() -> None:
-    """Example job that runs every minute.
-    
-    This is a placeholder for actual rule evaluation logic.
+class RuleEngine:
     """
-    logger.info("Rule tick")
-
-
-def shutdown_handler(signum: int, frame: object) -> NoReturn:
-    """Handle shutdown signals gracefully.
-    
-    Args:
-        signum: Signal number
-        frame: Current stack frame
+    Rule engine that loads rules, subscribes to MQTT events,
+    and dispatches them to registered rule implementations.
     """
-    logger.info(f"Received signal {signum}, shutting down...")
-    if scheduler:
-        scheduler.shutdown(wait=True)
-        logger.info("Scheduler stopped")
-    sys.exit(0)
+    
+    def __init__(
+        self,
+        rules_config_path: str,
+        mqtt_broker: str,
+        mqtt_port: int,
+        redis_url: str
+    ):
+        """
+        Initialize rule engine.
+        
+        Args:
+            rules_config_path: Path to rules.yaml
+            mqtt_broker: MQTT broker hostname/IP
+            mqtt_port: MQTT broker port
+            redis_url: Redis connection URL
+        """
+        self.rules_config_path = rules_config_path
+        self.mqtt_broker = mqtt_broker
+        self.mqtt_port = mqtt_port
+        self.redis_url = redis_url
+        
+        # Will be initialized in setup()
+        self.rule_descriptors: list[RuleDescriptor] = []
+        self.rules: dict[str, Any] = {}  # rule_id -> Rule instance
+        self.mqtt_client: MQTTClient | None = None
+        self.redis_state: RedisState | None = None
+        self.context: RuleContext | None = None
+        self._mqtt_topics: list[str] = []  # Topics to subscribe to
+        
+        # For graceful shutdown
+        self._shutdown_event = asyncio.Event()
+    
+    async def setup(self) -> None:
+        """
+        Load configuration and instantiate rules.
+        
+        Raises:
+            ImportError: If rule implementation not found
+            ValueError: If configuration is invalid
+        """
+        logger.info(f"Loading rules configuration from {self.rules_config_path}")
+        
+        # Load rules configuration
+        config = load_rules_config(self.rules_config_path)
+        self.rule_descriptors = config.rules
+        
+        logger.info(f"Loaded {len(self.rule_descriptors)} rule(s) from configuration")
+        
+        # Instantiate each rule
+        for desc in self.rule_descriptors:
+            if not desc.enabled:
+                logger.info(f"  - {desc.id} (type: {desc.type}) [DISABLED]")
+                continue
+            
+            try:
+                rule_instance = load_rule(desc)
+                self.rules[desc.id] = rule_instance
+                logger.info(f"  - {desc.id} (type: {desc.type})")
+            except Exception as e:
+                logger.error(f"Failed to load rule {desc.id} (type: {desc.type}): {e}")
+                raise
+        
+        enabled_count = len(self.rules)
+        total_count = len(self.rule_descriptors)
+        disabled_count = total_count - enabled_count
+        logger.info(f"Successfully loaded {enabled_count} rule implementation(s) ({disabled_count} disabled)")
+        
+        # Call setup on each rule for validation
+        for rule_id, rule_instance in self.rules.items():
+            desc = next((d for d in self.rule_descriptors if d.id == rule_id), None)
+            if desc:
+                try:
+                    ctx = RuleContext(
+                        logger=logger,
+                        mqtt_publisher=self.mqtt_client,
+                        redis_state=self.redis_state
+                    )
+                    await rule_instance.setup(desc, ctx)
+                except Exception as e:
+                    logger.error(f"Failed to setup rule {rule_id}: {e}")
+                    raise
+        
+        # Collect MQTT subscriptions from all enabled rules
+        all_topics = set()
+        for rule_id, rule_instance in self.rules.items():
+            desc = next((d for d in self.rule_descriptors if d.id == rule_id), None)
+            if desc:
+                try:
+                    topics = rule_instance.get_subscriptions(desc)
+                    all_topics.update(topics)
+                    logger.debug(f"Rule {rule_id} subscribes to {len(topics)} topic(s)")
+                except Exception as e:
+                    logger.error(f"Failed to get subscriptions for rule {rule_id}: {e}")
+                    raise
+        
+        logger.info(f"Total MQTT subscriptions needed: {len(all_topics)}")
+        
+        # Create unique client ID to avoid conflicts
+        import uuid
+        import os
+        
+        client_id_base = "rule_engine"
+        client_suffix = os.environ.get("MQTT_CLIENT_ID_SUFFIX") or uuid.uuid4().hex[:6]
+        unique_client_id = f"{client_id_base}-{client_suffix}"
+        
+        # Initialize MQTT client
+        self.mqtt_client = MQTTClient(
+            broker=self.mqtt_broker,
+            port=self.mqtt_port,
+            client_id=unique_client_id
+        )
+        self.mqtt_client.set_logger(logger)
+        
+        # Store topics for connection
+        self._mqtt_topics = list(all_topics)
+        
+        # Initialize Redis state
+        self.redis_state = RedisState(self.redis_url)
+        
+        # Create MQTT publisher wrapper for RuleContext
+        from apps.rules.rule_interface import MQTTPublisher
+        mqtt_publisher = MQTTPublisher(mqtt_client=self.mqtt_client)
+        
+        # Create rule context
+        self.context = RuleContext(
+            logger=logger,
+            mqtt_publisher=mqtt_publisher,
+            redis_state=self.redis_state,
+            now_fn=datetime.now
+        )
+    
+    def _filter_rules_for_event(self, event: dict[str, Any]) -> list[tuple[str, RuleDescriptor]]:
+        """
+        Filter rules that should receive this event.
+        
+        Rules match if the event's device_id is in the rule's objects.
+        
+        Args:
+            event: Normalized MQTT event
+            
+        Returns:
+            List of (rule_id, descriptor) tuples that should process this event
+        """
+        matching_rules = []
+        device_id = event.get('device_id')
+        cap = event.get('cap')
+        
+        if not device_id or not cap:
+            return matching_rules
+        
+        logger.debug(f"Filtering for cap={cap}, device_id={device_id}")
+        
+        # Only check enabled rules (rules in self.rules dict)
+        for rule_id, rule_instance in self.rules.items():
+            desc = next((d for d in self.rule_descriptors if d.id == rule_id), None)
+            if not desc:
+                continue
+                
+            objects = desc.objects
+            
+            # Check if this device is in the rule's objects
+            matched = False
+            
+            if cap == 'contact' and objects.get('contacts'):
+                logger.debug(f"Rule {rule_id}: checking contacts {objects.get('contacts')}")
+                if device_id in objects.get('contacts', []):
+                    matched = True
+            
+            elif cap == 'thermostat' and objects.get('thermostats'):
+                logger.debug(f"Rule {rule_id}: checking thermostats {objects.get('thermostats')}")
+                if device_id in objects.get('thermostats', []):
+                    matched = True
+            
+            elif cap == 'light' and objects.get('lights'):
+                logger.debug(f"Rule {rule_id}: checking lights {objects.get('lights')}")
+                if device_id in objects.get('lights', []):
+                    matched = True
+            
+            elif cap == 'relay' and objects.get('relays'):
+                logger.debug(f"Rule {rule_id}: checking relays {objects.get('relays')}")
+                if device_id in objects.get('relays', []):
+                    matched = True
+            
+            if matched:
+                matching_rules.append((rule_id, desc))
+        
+        return matching_rules
+    
+    async def _dispatch_event(self, event: dict[str, Any]) -> None:
+        """
+        Dispatch event to matching rules.
+        
+        Calls rule.on_event() for each matching rule sequentially
+        to preserve order and avoid race conditions.
+        
+        Args:
+            event: Normalized MQTT event
+        """
+        # Debug logging
+        logger.debug(f"Received event: {event}")
+        
+        matching_rules = self._filter_rules_for_event(event)
+        
+        if not matching_rules:
+            # No rules interested in this event
+            logger.debug(f"No matching rules for {event.get('cap')}/{event.get('device_id')}")
+            return
+        
+        logger.info(
+            f"Event {event['cap']}/{event['device_id']}: "
+            f"{len(matching_rules)} matching rule(s)"
+        )
+        
+        # Process rules sequentially to preserve order
+        for rule_id, desc in matching_rules:
+            rule = self.rules.get(rule_id)
+            if not rule:
+                logger.warning(f"Rule instance not found for {rule_id}")
+                continue
+            
+            try:
+                await rule.on_event(event, desc, self.context)
+            except Exception as e:
+                logger.error(
+                    f"Error in rule {rule_id} processing event "
+                    f"{event['cap']}/{event['device_id']}: {e}",
+                    exc_info=True
+                )
+                # Continue with other rules
+    
+    async def run(self) -> None:
+        """
+        Main event loop - subscribe to MQTT and process events.
+        
+        Runs until shutdown signal received.
+        """
+        logger.info("Starting event processing loop")
+        
+        try:
+            async for event in self.mqtt_client.connect(topics=self._mqtt_topics):
+                # Check for shutdown
+                if self._shutdown_event.is_set():
+                    logger.info("Shutdown signal received, stopping event loop")
+                    break
+                
+                # Dispatch event to matching rules
+                await self._dispatch_event(event)
+                
+        except asyncio.CancelledError:
+            logger.info("Event loop cancelled")
+            raise
+        except Exception as e:
+            logger.error(f"Fatal error in event loop: {e}", exc_info=True)
+            raise
+    
+    async def shutdown(self) -> None:
+        """Graceful shutdown - close connections."""
+        logger.info("Shutting down rule engine...")
+        self._shutdown_event.set()
+        
+        if self.redis_state:
+            await self.redis_state.close()
+            logger.info("Redis connection closed")
+        
+        logger.info("Shutdown complete")
+
+
+async def main_async() -> None:
+    """Async main function."""
+    # Read configuration from environment
+    rules_config = os.getenv('RULES_CONFIG', 'config/rules.yaml')
+    mqtt_broker = os.getenv('MQTT_BROKER', '172.16.2.16')
+    mqtt_port = int(os.getenv('MQTT_PORT', '1883'))
+    redis_host = os.getenv('REDIS_HOST', '172.23.1.116')
+    redis_port = int(os.getenv('REDIS_PORT', '6379'))
+    redis_db = int(os.getenv('REDIS_DB', '8'))
+    redis_url = f'redis://{redis_host}:{redis_port}/{redis_db}'
+    
+    logger.info("=" * 60)
+    logger.info("Rules Engine Starting")
+    logger.info("=" * 60)
+    logger.info(f"Config: {rules_config}")
+    logger.info(f"MQTT: {mqtt_broker}:{mqtt_port}")
+    logger.info(f"Redis: {redis_url}")
+    logger.info("=" * 60)
+    
+    # Initialize engine
+    engine = RuleEngine(
+        rules_config_path=rules_config,
+        mqtt_broker=mqtt_broker,
+        mqtt_port=mqtt_port,
+        redis_url=redis_url
+    )
+    
+    # Load rules
+    try:
+        await engine.setup()
+    except Exception as e:
+        logger.error(f"Failed to setup engine: {e}", exc_info=True)
+        sys.exit(1)
+    
+    # Setup signal handlers for graceful shutdown
+    loop = asyncio.get_running_loop()
+    main_task = None
+    
+    def signal_handler():
+        logger.info("Received shutdown signal")
+        engine._shutdown_event.set()
+        if main_task and not main_task.done():
+            main_task.cancel()
+    
+    for sig in (signal.SIGTERM, signal.SIGINT):
+        loop.add_signal_handler(sig, signal_handler)
+    
+    # Run engine
+    try:
+        main_task = asyncio.create_task(engine.run())
+        await main_task
+    except asyncio.CancelledError:
+        logger.info("Main task cancelled")
+    finally:
+        await engine.shutdown()
 
 
 def main() -> None:
-    """Run the rules application."""
-    global scheduler
-    
-    logger.info("Rules engine starting...")
-    
-    # Register signal handlers
-    signal.signal(signal.SIGINT, shutdown_handler)
-    signal.signal(signal.SIGTERM, shutdown_handler)
-    
-    # Initialize scheduler
-    scheduler = BackgroundScheduler()
-    
-    # Add example job - runs every minute
-    scheduler.add_job(
-        rule_tick,
-        'interval',
-        minutes=1,
-        id='rule_tick',
-        name='Rule Tick Job'
-    )
-    
-    # Start scheduler
-    scheduler.start()
-    logger.info("Scheduler started with rule_tick job (every 1 minute)")
-    
-    # Run initial tick immediately
-    rule_tick()
-    
-    # Keep the application running
+    """Entry point for rule engine."""
     try:
-        while True:
-            time.sleep(1)
+        asyncio.run(main_async())
     except KeyboardInterrupt:
-        logger.info("KeyboardInterrupt received, shutting down...")
-        scheduler.shutdown(wait=True)
-        logger.info("Scheduler stopped")
+        logger.info("Keyboard interrupt received")
+    except Exception as e:
+        logger.error(f"Fatal error: {e}", exc_info=True)
+        sys.exit(1)
 
 
 if __name__ == "__main__":

apps/rules/requirements.txt

@@ -0,0 +1,5 @@
+# Rules Engine Dependencies
+pydantic>=2.0
+redis>=5.0.1
+aiomqtt>=2.0.1
+pyyaml>=6.0.1

apps/rules/rule_interface.py

@@ -0,0 +1,742 @@
+"""
+Rule Interface and Context Objects
+
+Provides the core abstractions for implementing automation rules:
+- RuleDescriptor: Configuration data for a rule instance
+- RedisState: State persistence interface
+- RuleContext: Runtime context provided to rules
+- Rule: Abstract base class for all rule implementations
+"""
+
+from abc import ABC, abstractmethod
+from datetime import datetime
+from typing import Any, Awaitable, Optional
+
+from pydantic import BaseModel, Field
+
+
+class RuleDescriptor(BaseModel):
+    """
+    Configuration descriptor for a rule instance.
+    
+    This is the validated representation of a rule from rules.yaml.
+    The engine loads these and passes them to rule implementations.
+    
+    The 'objects' field is intentionally flexible (dict) to allow different
+    rule types to define their own object structures.
+    """
+    
+    id: str = Field(..., description="Unique identifier for this rule instance")
+    name: Optional[str] = Field(None, description="Optional human-readable name")
+    type: str = Field(..., description="Rule type with version (e.g., 'window_setback@1.0')")
+    enabled: bool = Field(default=True, description="Whether this rule is enabled")
+    objects: dict[str, Any] = Field(
+        default_factory=dict,
+        description="Objects this rule monitors or controls (structure varies by rule type)"
+    )
+    params: dict[str, Any] = Field(
+        default_factory=dict,
+        description="Rule-specific parameters"
+    )
+
+
+class RedisState:
+    """
+    Async Redis-backed state persistence for rules with automatic reconnection.
+    
+    Provides a simple key-value and hash storage interface for rules to persist
+    state across restarts. All operations are asynchronous and include retry logic
+    for robustness against temporary Redis outages.
+    
+    Key Convention:
+    - Callers should use keys like: f"rules:{rule_id}:contact:{device_id}"
+    - This class does NOT enforce key prefixes - caller controls the full key
+    """
+    
+    def __init__(self, url: str, max_retries: int = 3, retry_delay: float = 0.5):
+        """
+        Initialize RedisState with connection URL.
+        
+        Args:
+            url: Redis connection URL (e.g., 'redis://172.23.1.116:6379/8')
+            max_retries: Maximum number of retry attempts for operations (default: 3)
+            retry_delay: Initial delay between retries in seconds, uses exponential backoff (default: 0.5)
+        
+        Note:
+            Connection is lazy - actual connection happens on first operation.
+            Uses connection pooling with automatic reconnection on failure.
+        """
+        self._url = url
+        self._max_retries = max_retries
+        self._retry_delay = retry_delay
+        self._redis: Optional[Any] = None  # redis.asyncio.Redis instance
+    
+    async def _get_client(self):
+        """
+        Get or create Redis client with connection pool.
+        
+        Lazy initialization ensures we don't connect until first use.
+        Uses decode_responses=True for automatic UTF-8 decoding.
+        """
+        if self._redis is None:
+            import redis.asyncio as aioredis
+            self._redis = await aioredis.from_url(
+                self._url,
+                decode_responses=True,  # Automatic UTF-8 decode
+                encoding='utf-8',
+                max_connections=10,  # Connection pool size
+                socket_connect_timeout=5,
+                socket_keepalive=True,
+                health_check_interval=30  # Auto-check connection health
+            )
+        return self._redis
+    
+    async def _execute_with_retry(self, operation, *args, **kwargs):
+        """
+        Execute Redis operation with exponential backoff retry.
+        
+        Handles temporary connection failures gracefully by retrying
+        with exponential backoff. On permanent failure, raises the
+        original exception.
+        
+        Args:
+            operation: Async callable (Redis method)
+            *args, **kwargs: Arguments to pass to operation
+            
+        Returns:
+            Result of the operation
+            
+        Raises:
+            Exception: If all retries are exhausted
+        """
+        import asyncio
+        
+        last_exception = None
+        for attempt in range(self._max_retries):
+            try:
+                client = await self._get_client()
+                return await operation(client, *args, **kwargs)
+            except Exception as e:
+                last_exception = e
+                if attempt < self._max_retries - 1:
+                    # Exponential backoff: 0.5s, 1s, 2s, ...
+                    delay = self._retry_delay * (2 ** attempt)
+                    await asyncio.sleep(delay)
+                    # Reset client to force reconnection
+                    if self._redis:
+                        try:
+                            await self._redis.close()
+                        except:
+                            pass
+                        self._redis = None
+        
+        # All retries exhausted
+        raise last_exception
+    
+    # JSON helpers for complex data structures
+    def _dumps(self, obj: Any) -> str:
+        """Serialize Python object to JSON string."""
+        import json
+        return json.dumps(obj, ensure_ascii=False)
+    
+    def _loads(self, s: str) -> Any:
+        """Deserialize JSON string to Python object."""
+        import json
+        return json.loads(s)
+    
+    async def get(self, key: str) -> Optional[str]:
+        """
+        Get a string value by key.
+        
+        Args:
+            key: Redis key (e.g., "rules:my_rule:contact:sensor_1")
+            
+        Returns:
+            String value or None if key doesn't exist
+            
+        Example:
+            >>> state = RedisState("redis://localhost:6379/0")
+            >>> await state.set("rules:r1:temp", "22.5")
+            >>> temp = await state.get("rules:r1:temp")
+            >>> print(temp)  # "22.5"
+        """
+        async def _get(client, k):
+            return await client.get(k)
+        
+        return await self._execute_with_retry(_get, key)
+    
+    async def set(self, key: str, value: str, ttl_secs: Optional[int] = None) -> None:
+        """
+        Set a string value with optional TTL.
+        
+        Args:
+            key: Redis key
+            value: String value to store
+            ttl_secs: Optional time-to-live in seconds. If None, key persists indefinitely.
+            
+        Example:
+            >>> state = RedisState("redis://localhost:6379/0")
+            >>> # Store with 1 hour TTL
+            >>> await state.set("rules:r1:previous_temp", "20.0", ttl_secs=3600)
+        """
+        async def _set(client, k, v, ttl):
+            if ttl is not None:
+                await client.setex(k, ttl, v)
+            else:
+                await client.set(k, v)
+        
+        await self._execute_with_retry(_set, key, value, ttl_secs)
+    
+    async def hget(self, key: str, field: str) -> Optional[str]:
+        """
+        Get a hash field value.
+        
+        Args:
+            key: Redis hash key
+            field: Field name within the hash
+            
+        Returns:
+            String value or None if field doesn't exist
+            
+        Example:
+            >>> state = RedisState("redis://localhost:6379/0")
+            >>> await state.hset("rules:r1:device_states", "sensor_1", "open")
+            >>> value = await state.hget("rules:r1:device_states", "sensor_1")
+            >>> print(value)  # "open"
+        """
+        async def _hget(client, k, f):
+            return await client.hget(k, f)
+        
+        return await self._execute_with_retry(_hget, key, field)
+    
+    async def hset(self, key: str, field: str, value: str) -> None:
+        """
+        Set a hash field value.
+        
+        Args:
+            key: Redis hash key
+            field: Field name within the hash
+            value: String value to store
+            
+        Example:
+            >>> state = RedisState("redis://localhost:6379/0")
+            >>> await state.hset("rules:r1:sensors", "bedroom", "open")
+            >>> await state.hset("rules:r1:sensors", "kitchen", "closed")
+        """
+        async def _hset(client, k, f, v):
+            await client.hset(k, f, v)
+        
+        await self._execute_with_retry(_hset, key, field, value)
+    
+    async def expire(self, key: str, ttl_secs: int) -> None:
+        """
+        Set or update TTL on an existing key.
+        
+        Args:
+            key: Redis key
+            ttl_secs: Time-to-live in seconds
+            
+        Example:
+            >>> state = RedisState("redis://localhost:6379/0")
+            >>> await state.set("rules:r1:temp", "22.5")
+            >>> await state.expire("rules:r1:temp", 3600)  # Expire in 1 hour
+        """
+        async def _expire(client, k, ttl):
+            await client.expire(k, ttl)
+        
+        await self._execute_with_retry(_expire, key, ttl_secs)
+    
+    async def close(self) -> None:
+        """
+        Close Redis connection and cleanup resources.
+        
+        Should be called when shutting down the application.
+        """
+        if self._redis:
+            await self._redis.close()
+            self._redis = None
+
+
+class MQTTClient:
+    """
+    Async MQTT client for rule engine with event normalization and publishing.
+    
+    Subscribes to device state topics, normalizes events to a consistent format,
+    and provides high-level publishing methods for device commands.
+    
+    Event Normalization:
+    All incoming MQTT messages are parsed into a normalized event structure:
+    {
+        "topic": "home/contact/sensor_1/state",
+        "type": "state",
+        "cap": "contact",          # Capability type (contact, thermostat, light, etc.)
+        "device_id": "sensor_1",
+        "payload": {"contact": "open"},
+        "ts": "2025-11-11T10:30:45.123456"
+    }
+    """
+    
+    def __init__(
+        self,
+        broker: str,
+        port: int = 1883,
+        client_id: str = "rule_engine",
+        reconnect_interval: int = 5,
+        max_reconnect_delay: int = 300
+    ):
+        """
+        Initialize MQTT client.
+        
+        Args:
+            broker: MQTT broker hostname or IP
+            port: MQTT broker port (default: 1883)
+            client_id: Unique client ID for this connection
+            reconnect_interval: Initial reconnect delay in seconds (default: 5)
+            max_reconnect_delay: Maximum reconnect delay in seconds (default: 300)
+        """
+        self._broker = broker
+        self._port = port
+        self._client_id = client_id
+        self._reconnect_interval = reconnect_interval
+        self._max_reconnect_delay = max_reconnect_delay
+        self._client = None
+        self._logger = None  # Set externally
+        
+    def set_logger(self, logger):
+        """Set logger instance for connection status messages."""
+        self._logger = logger
+    
+    def _log(self, level: str, msg: str):
+        """Internal logging helper."""
+        if self._logger:
+            getattr(self._logger, level)(msg)
+        else:
+            print(f"[{level.upper()}] {msg}")
+    
+    async def connect(self, topics: list[str] = None):
+        """
+        Connect to MQTT broker with automatic reconnection.
+        
+        This method manages the connection and automatically reconnects
+        with exponential backoff if the connection is lost.
+        
+        Args:
+            topics: List of MQTT topics to subscribe to. If None, subscribes to nothing.
+        """
+        import aiomqtt
+        from aiomqtt import Client
+        
+        if topics is None:
+            topics = []
+        
+        reconnect_delay = self._reconnect_interval
+        
+        while True:
+            try:
+                self._log("info", f"Connecting to MQTT broker {self._broker}:{self._port} (client_id={self._client_id})")
+                
+                async with Client(
+                    hostname=self._broker,
+                    port=self._port,
+                    identifier=self._client_id,
+                ) as client:
+                    self._client = client
+                    self._log("info", f"Connected to MQTT broker {self._broker}:{self._port}")
+                    
+                    # Subscribe to provided topics
+                    if topics:
+                        for topic in topics:
+                            await client.subscribe(topic)
+                        self._log("info", f"Subscribed to {len(topics)} topic(s): {', '.join(topics[:5])}{'...' if len(topics) > 5 else ''}")
+                    
+                    # Reset reconnect delay on successful connection
+                    reconnect_delay = self._reconnect_interval
+                    
+                    # Process messages - this is a generator that yields messages
+                    async for message in client.messages:
+                        yield self._normalize_event(message)
+                        
+            except aiomqtt.MqttError as e:
+                self._log("error", f"MQTT connection error: {e}")
+                self._log("info", f"Reconnecting in {reconnect_delay} seconds...")
+                
+                import asyncio
+                await asyncio.sleep(reconnect_delay)
+                
+                # Exponential backoff
+                reconnect_delay = min(reconnect_delay * 2, self._max_reconnect_delay)
+    
+    def _normalize_event(self, message) -> dict[str, Any]:
+        """
+        Normalize MQTT message to standard event format.
+        
+        Parses topic to extract capability type and device_id,
+        adds timestamp, and structures payload.
+        
+        Args:
+            message: aiomqtt.Message instance
+            
+        Returns:
+            Normalized event dictionary
+            
+        Example:
+            Topic: home/contact/sensor_bedroom/state
+            Payload: {"contact": "open"}
+            
+            Returns:
+            {
+                "topic": "home/contact/sensor_bedroom/state",
+                "type": "state",
+                "cap": "contact",
+                "device_id": "sensor_bedroom",
+                "payload": {"contact": "open"},
+                "ts": "2025-11-11T10:30:45.123456"
+            }
+        """
+        from datetime import datetime
+        import json
+        
+        topic = str(message.topic)
+        topic_parts = topic.split('/')
+        
+        # Parse topic: home/{capability}/{device_id}/state
+        if len(topic_parts) >= 4 and topic_parts[0] == 'home' and topic_parts[3] == 'state':
+            cap = topic_parts[1]  # contact, thermostat, light, etc.
+            device_id = topic_parts[2]
+        else:
+            # Fallback for unexpected topic format
+            cap = "unknown"
+            device_id = topic_parts[-2] if len(topic_parts) >= 2 else "unknown"
+        
+        # Parse payload
+        try:
+            payload = json.loads(message.payload.decode('utf-8'))
+        except (json.JSONDecodeError, UnicodeDecodeError):
+            payload = {"raw": message.payload.decode('utf-8', errors='replace')}
+        
+        # Generate timestamp
+        ts = datetime.now().isoformat()
+        
+        return {
+            "topic": topic,
+            "type": "state",
+            "cap": cap,
+            "device_id": device_id,
+            "payload": payload,
+            "ts": ts
+        }
+    
+    async def publish_set_thermostat(self, device_id: str, target: float) -> None:
+        """
+        Publish thermostat target temperature command.
+        
+        Publishes to: home/thermostat/{device_id}/set
+        QoS: 1 (at least once delivery)
+        
+        Args:
+            device_id: Thermostat device identifier
+            target: Target temperature in degrees Celsius
+            
+        Example:
+            >>> mqtt = MQTTClient("172.16.2.16", 1883)
+            >>> await mqtt.publish_set_thermostat("thermostat_wohnzimmer", 22.5)
+            
+            Published to: home/thermostat/thermostat_wohnzimmer/set
+            Payload: {"type":"thermostat","payload":{"target":22.5}}
+        """
+        import json
+        
+        if self._client is None:
+            raise RuntimeError("MQTT client not connected. Call connect() first.")
+        
+        topic = f"home/thermostat/{device_id}/set"
+        payload = {
+            "type": "thermostat",
+            "payload": {
+                "target": target
+            }
+        }
+        
+        payload_str = json.dumps(payload)
+        
+        await self._client.publish(
+            topic,
+            payload=payload_str.encode('utf-8'),
+            qos=1  # At least once delivery
+        )
+        
+        self._log("debug", f"Published SET to {topic}: {payload_str}")
+
+
+# Legacy alias for backward compatibility
+class MQTTPublisher:
+    """
+    Legacy MQTT publishing interface - DEPRECATED.
+    
+    Use MQTTClient instead for new code.
+    This class is kept for backward compatibility with existing documentation.
+    """
+    
+    def __init__(self, mqtt_client):
+        """
+        Initialize MQTT publisher.
+        
+        Args:
+            mqtt_client: MQTTClient instance
+        """
+        self._mqtt = mqtt_client
+    
+    async def publish_set_thermostat(self, device_id: str, target: float) -> None:
+        """
+        Publish a thermostat target temperature command.
+        
+        Args:
+            device_id: Thermostat device identifier
+            target: Target temperature in degrees Celsius
+        """
+        await self._mqtt.publish_set_thermostat(device_id, target)
+
+
+class RuleContext:
+    """
+    Runtime context provided to rules during event processing.
+    
+    Contains all external dependencies and utilities a rule needs:
+    - Logger for diagnostics
+    - MQTT client for publishing commands
+    - Redis client for state persistence
+    - Current timestamp function
+    """
+    
+    def __init__(
+        self,
+        logger,
+        mqtt_publisher: MQTTPublisher,
+        redis_state: RedisState,
+        now_fn=None
+    ):
+        """
+        Initialize rule context.
+        
+        Args:
+            logger: Logger instance (e.g., logging.Logger)
+            mqtt_publisher: MQTTPublisher instance for device commands
+            redis_state: RedisState instance for persistence
+            now_fn: Optional callable returning current datetime (defaults to datetime.now)
+        """
+        self.logger = logger
+        self.mqtt = mqtt_publisher
+        self.redis = redis_state
+        self._now_fn = now_fn or datetime.now
+    
+    def now(self) -> datetime:
+        """
+        Get current timestamp.
+        
+        Returns:
+            Current datetime (timezone-aware if now_fn provides it)
+        """
+        return self._now_fn()
+
+
+class Rule(ABC):
+    """
+    Abstract base class for all automation rule implementations.
+    
+    Rules implement event-driven automation logic. The engine calls on_event()
+    for each relevant device state change, passing the event data, rule configuration,
+    and runtime context.
+    
+    Implementations must be idempotent - processing the same event multiple times
+    should produce the same result.
+    
+    Example implementation:
+    
+        class WindowSetbackRule(Rule):
+            def get_subscriptions(self, desc: RuleDescriptor) -> list[str]:
+                # Subscribe to contact sensor state topics
+                topics = []
+                for contact_id in desc.objects.contacts or []:
+                    topics.append(f"home/contact/{contact_id}/state")
+                return topics
+            
+            async def on_event(self, evt: dict, desc: RuleDescriptor, ctx: RuleContext) -> None:
+                device_id = evt['device_id']
+                cap = evt['cap']
+                
+                if cap == 'contact':
+                    contact_state = evt['payload'].get('contact')
+                    if contact_state == 'open':
+                        # Window opened - set thermostats to eco
+                        for thermo_id in desc.objects.thermostats or []:
+                            eco_temp = desc.params.get('eco_target', 16.0)
+                            await ctx.mqtt.publish_set_thermostat(thermo_id, eco_temp)
+    """
+    
+    @abstractmethod
+    def get_subscriptions(self, desc: RuleDescriptor) -> list[str]:
+        """
+        Return list of MQTT topics this rule needs to subscribe to.
+        
+        Called once during rule engine setup. The rule examines its configuration
+        (desc.objects) and returns the specific state topics it needs to monitor.
+        
+        Args:
+            desc: Rule configuration from rules.yaml
+            
+        Returns:
+            List of MQTT topic patterns/strings to subscribe to
+            
+        Example:
+            For a window setback rule monitoring 2 contacts:
+            ['home/contact/sensor_bedroom/state', 'home/contact/sensor_kitchen/state']
+        """
+        pass
+    
+    @abstractmethod
+    async def on_event(
+        self,
+        evt: dict[str, Any],
+        desc: RuleDescriptor,
+        ctx: RuleContext
+    ) -> None:
+        """
+        Process a device state change event.
+        
+        This method is called by the rule engine whenever a device state changes
+        that is relevant to this rule. The implementation should examine the event
+        and take appropriate actions (e.g., publish MQTT commands, update state).
+        
+        MUST be idempotent: Processing the same event multiple times should be safe.
+        
+        Args:
+            evt: Event dictionary with the following structure:
+                {
+                    "topic": "home/contact/device_id/state",  # MQTT topic
+                    "type": "state",                          # Message type
+                    "cap": "contact",                         # Capability type
+                    "device_id": "kontakt_wohnzimmer",        # Device identifier
+                    "payload": {"contact": "open"},           # Capability-specific payload
+                    "ts": "2025-11-11T10:30:45.123456"       # ISO timestamp
+                }
+            
+            desc: Rule configuration from rules.yaml
+            
+            ctx: Runtime context with logger, MQTT, Redis, and timestamp utilities
+        
+        Returns:
+            None
+            
+        Raises:
+            Exception: Implementation may raise exceptions for errors.
+                      The engine will log them but continue processing.
+        """
+        pass
+
+
+# ============================================================================
+# Dynamic Rule Loading
+# ============================================================================
+
+import importlib
+import re
+from typing import Type
+
+# Cache for loaded rule classes (per process)
+_RULE_CLASS_CACHE: dict[str, Type[Rule]] = {}
+
+
+def load_rule(desc: RuleDescriptor) -> Rule:
+    """
+    Dynamically load and instantiate a rule based on its type descriptor.
+    
+    Convention:
+    - Rule type format: 'name@version' (e.g., 'window_setback@1.0')
+    - Module path: apps.rules.impl.{name}
+    - Class name: PascalCase version of name + 'Rule'
+      Example: 'window_setback' → 'WindowSetbackRule'
+    
+    Args:
+        desc: Rule descriptor from rules.yaml
+        
+    Returns:
+        Instantiated Rule object
+        
+    Raises:
+        ValueError: If type format is invalid
+        ImportError: If rule module cannot be found
+        AttributeError: If rule class cannot be found in module
+        
+    Examples:
+        >>> desc = RuleDescriptor(
+        ...     id="test_rule",
+        ...     type="window_setback@1.0",
+        ...     targets={},
+        ...     params={}
+        ... )
+        >>> rule = load_rule(desc)
+        >>> isinstance(rule, Rule)
+        True
+    """
+    rule_type = desc.type
+    
+    # Check cache first
+    if rule_type in _RULE_CLASS_CACHE:
+        rule_class = _RULE_CLASS_CACHE[rule_type]
+        return rule_class()
+    
+    # Parse type: 'name@version'
+    if '@' not in rule_type:
+        raise ValueError(
+            f"Invalid rule type '{rule_type}': must be in format 'name@version' "
+            f"(e.g., 'window_setback@1.0')"
+        )
+    
+    name, version = rule_type.split('@', 1)
+    
+    # Validate name (alphanumeric and underscores only)
+    if not re.match(r'^[a-z][a-z0-9_]*$', name):
+        raise ValueError(
+            f"Invalid rule name '{name}': must start with lowercase letter "
+            f"and contain only lowercase letters, numbers, and underscores"
+        )
+    
+    # Convert snake_case to PascalCase for class name
+    # Example: 'window_setback' → 'WindowSetbackRule'
+    class_name = ''.join(word.capitalize() for word in name.split('_')) + 'Rule'
+    
+    # Construct module path
+    module_path = f'apps.rules.impl.{name}'
+    
+    # Try to import the module
+    try:
+        module = importlib.import_module(module_path)
+    except ImportError as e:
+        raise ImportError(
+            f"Cannot load rule type '{rule_type}': module '{module_path}' not found.\n"
+            f"Hint: Create file 'apps/rules/impl/{name}.py' with class '{class_name}'.\n"
+            f"Original error: {e}"
+        ) from e
+    
+    # Try to get the class from the module
+    try:
+        rule_class = getattr(module, class_name)
+    except AttributeError as e:
+        raise AttributeError(
+            f"Cannot load rule type '{rule_type}': class '{class_name}' not found in module '{module_path}'.\n"
+            f"Hint: Define 'class {class_name}(Rule):' in 'apps/rules/impl/{name}.py'.\n"
+            f"Available classes in module: {[name for name in dir(module) if not name.startswith('_')]}"
+        ) from e
+    
+    # Validate that it's a Rule subclass
+    if not issubclass(rule_class, Rule):
+        raise TypeError(
+            f"Class '{class_name}' in '{module_path}' is not a subclass of Rule. "
+            f"Ensure it inherits from apps.rules.rule_interface.Rule"
+        )
+    
+    # Cache the class
+    _RULE_CLASS_CACHE[rule_type] = rule_class
+    
+    # Instantiate and return
+    return rule_class()

apps/rules/rules_config.py

@@ -0,0 +1,122 @@
+"""
+Rules Configuration Schema and Loader
+
+Provides Pydantic models for validating rules.yaml configuration.
+"""
+
+from pathlib import Path
+from typing import Any, Optional
+
+import yaml
+from pydantic import BaseModel, Field, field_validator
+
+
+class Rule(BaseModel):
+    """Single rule configuration"""
+    id: str = Field(..., description="Unique rule identifier")
+    name: Optional[str] = Field(None, description="Optional human-readable name")
+    type: str = Field(..., description="Rule type (e.g., 'window_setback@1.0')")
+    enabled: bool = Field(default=True, description="Whether this rule is enabled")
+    objects: dict[str, Any] = Field(default_factory=dict, description="Objects this rule monitors or controls")
+    params: dict[str, Any] = Field(default_factory=dict, description="Rule-specific parameters")
+
+    @field_validator('id')
+    @classmethod
+    def validate_id(cls, v: str) -> str:
+        if not v or not v.strip():
+            raise ValueError("Rule ID cannot be empty")
+        return v.strip()
+
+    @field_validator('type')
+    @classmethod
+    def validate_type(cls, v: str) -> str:
+        if not v or not v.strip():
+            raise ValueError("Rule type cannot be empty")
+        if '@' not in v:
+            raise ValueError(f"Rule type must include version (e.g., 'window_setback@1.0'), got: {v}")
+        return v.strip()
+
+
+class RulesConfig(BaseModel):
+    """Root configuration object"""
+    rules: list[Rule] = Field(..., description="List of all rules")
+
+    @field_validator('rules')
+    @classmethod
+    def validate_unique_ids(cls, rules: list[Rule]) -> list[Rule]:
+        """Ensure all rule IDs are unique"""
+        ids = [rule.id for rule in rules]
+        duplicates = [id for id in ids if ids.count(id) > 1]
+        if duplicates:
+            raise ValueError(f"Duplicate rule IDs found: {set(duplicates)}")
+        return rules
+
+
+def load_rules_config(config_path: str | Path = "config/rules.yaml") -> RulesConfig:
+    """
+    Load and validate rules configuration from YAML file.
+    
+    Args:
+        config_path: Path to rules.yaml file
+        
+    Returns:
+        Validated RulesConfig object
+        
+    Raises:
+        FileNotFoundError: If config file doesn't exist
+        ValueError: If YAML is invalid or validation fails
+    """
+    config_path = Path(config_path)
+    
+    if not config_path.exists():
+        raise FileNotFoundError(f"Rules configuration not found: {config_path}")
+    
+    with open(config_path, 'r', encoding='utf-8') as f:
+        try:
+            data = yaml.safe_load(f)
+        except yaml.YAMLError as e:
+            raise ValueError(f"Invalid YAML in {config_path}: {e}") from e
+    
+    if not data:
+        raise ValueError(f"Empty configuration file: {config_path}")
+    
+    if 'rules' not in data:
+        raise ValueError(
+            f"Missing 'rules:' key in {config_path}. "
+            "Configuration must start with 'rules:' followed by a list of rule definitions."
+        )
+    
+    try:
+        return RulesConfig(**data)
+    except Exception as e:
+        raise ValueError(f"Configuration validation failed: {e}") from e
+
+
+def get_rule_by_id(config: RulesConfig, rule_id: str) -> Rule | None:
+    """Get a specific rule by ID"""
+    for rule in config.rules:
+        if rule.id == rule_id:
+            return rule
+    return None
+
+
+def get_rules_by_type(config: RulesConfig, rule_type: str) -> list[Rule]:
+    """Get all rules of a specific type"""
+    return [rule for rule in config.rules if rule.type == rule_type]
+
+
+if __name__ == "__main__":
+    # Test configuration loading
+    try:
+        config = load_rules_config()
+        print(f"✅ Loaded {len(config.rules)} rules:")
+        for rule in config.rules:
+            name = f" ({rule.name})" if rule.name else ""
+            enabled = "✓" if rule.enabled else "✗"
+            print(f"  [{enabled}] {rule.id}{name}: {rule.type}")
+            if rule.objects:
+                obj_summary = ", ".join(f"{k}: {len(v) if isinstance(v, list) else v}" 
+                                       for k, v in rule.objects.items())
+                print(f"      Objects: {obj_summary}")
+    except Exception as e:
+        print(f"❌ Configuration error: {e}")

apps/simulator/README.md

@@ -59,13 +59,9 @@ docker run --rm -p 8010:8010 \
   simulator:dev
 ```
 
-**Mit Docker Network (optional):**
-```bash
-docker run --rm -p 8010:8010 \
-  --name simulator \
-  -e MQTT_BROKER=172.23.1.102 \
-  simulator:dev
-```
+**Note for finch/nerdctl users:**
+- finch binds ports to `127.0.0.1` by default
+- The web interface will be accessible at `http://127.0.0.1:8010`
 
 #### Environment Variables
 

apps/ui/README.md

@@ -37,17 +37,6 @@ docker build -t ui:dev -f apps/ui/Dockerfile .
 
 #### Run Container
 
-**Linux Server (empfohlen):**
-```bash
-# Mit Docker Network für Container-to-Container Kommunikation
-docker run --rm -p 8002:8002 \
-  -e UI_PORT=8002 \
-  -e API_BASE=http://172.19.1.11:8001 \
-  -e BASE_PATH=/ \
-  ui:dev
-```
-
-**macOS mit finch/nerdctl:**
 ```bash
 docker run --rm -p 8002:8002 \
   --add-host=host.docker.internal:host-gateway \
@@ -57,11 +46,10 @@ docker run --rm -p 8002:8002 \
   ui:dev
 ```
 
-**Hinweise:**
-- **Linux**: Verwende Docker Network und Service-Namen (`http://api:8001`)
-- **macOS/finch**: Verwende `host.docker.internal` mit `--add-host` flag
-- Die UI macht Server-Side API-Aufrufe beim Rendern der Seite
-- Browser-seitige Realtime-Updates (SSE) gehen direkt vom Browser zur API
+**Note for finch/nerdctl users:**
+- finch binds ports to `127.0.0.1` by default (not `0.0.0.0`)
+- Use `--add-host=host.docker.internal:host-gateway` to allow container-to-host communication
+- Set `API_BASE=http://host.docker.internal:8001` to reach the API container
 
 #### Environment Variables
 

apps/ui/static/favicon.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100">
+  <!-- Roof -->
+  <path d="M50 10 L90 45 L85 45 L85 50 L15 50 L15 45 L10 45 Z" fill="#667eea" stroke="#4c51bf" stroke-width="2" stroke-linejoin="round"/>
+  <!-- House body -->
+  <rect x="15" y="45" width="70" height="45" fill="#764ba2" stroke="#4c51bf" stroke-width="2"/>
+  <!-- Door -->
+  <rect x="35" y="60" width="15" height="30" fill="#4c51bf" rx="2"/>
+  <!-- Window -->
+  <rect x="60" y="60" width="20" height="15" fill="#fbbf24" stroke="#f59e0b" stroke-width="1"/>
+  <!-- Window panes -->
+  <line x1="70" y1="60" x2="70" y2="75" stroke="#f59e0b" stroke-width="1"/>
+  <line x1="60" y1="67.5" x2="80" y2="67.5" stroke="#f59e0b" stroke-width="1"/>
+</svg>

apps/ui/templates/dashboard.html

@@ -4,6 +4,7 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Home Automation</title>
+    <link rel="icon" type="image/svg+xml" href="/static/favicon.svg">
     <style>
         * {
             margin: 0;
@@ -165,6 +166,12 @@
             margin: 0;
         }
         
+        .room-title h2 {
+            font-size: 1.5rem;
+            font-weight: 700;
+            margin: 0;
+        }
+        
         .room-toggle {
             font-size: 1.5rem;
             color: #667eea;
@@ -478,6 +485,208 @@
             text-align: center;
         }
         
+        /* Groups Section Styles */
+        .groups-section .devices {
+            display: grid;
+            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
+            gap: 1rem;
+        }
+        
+        .group-card {
+            background: white;
+            border-radius: 12px;
+            padding: 1.25rem;
+            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
+            transition: all 0.3s;
+        }
+        
+        .group-card:hover {
+            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
+            transform: translateY(-2px);
+        }
+        
+        .group-card-header {
+            margin-bottom: 1rem;
+        }
+        
+        .group-card-title {
+            font-size: 1.125rem;
+            font-weight: 600;
+            color: #333;
+            margin-bottom: 0.25rem;
+        }
+        
+        .group-card-subtitle {
+            font-size: 0.875rem;
+            color: #666;
+        }
+        
+        .group-card-actions {
+            display: flex;
+            gap: 0.5rem;
+        }
+        
+        .group-button {
+            flex: 1;
+            padding: 0.75rem;
+            border: none;
+            border-radius: 8px;
+            font-size: 0.875rem;
+            font-weight: 600;
+            cursor: pointer;
+            transition: all 0.2s;
+            min-height: 44px;
+            position: relative;
+        }
+        
+        .group-button.on {
+            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+            color: white;
+        }
+        
+        .group-button.on:hover {
+            background: linear-gradient(135deg, #5568d3 0%, #653a8e 100%);
+        }
+        
+        .group-button.off {
+            background: #f1f3f5;
+            color: #495057;
+        }
+        
+        .group-button.off:hover {
+            background: #e9ecef;
+        }
+        
+        .group-button:active {
+            transform: scale(0.95);
+        }
+        
+        .group-button:disabled {
+            opacity: 0.6;
+            cursor: not-allowed;
+        }
+        
+        .group-button .spinner {
+            display: inline-block;
+            width: 14px;
+            height: 14px;
+            border: 2px solid rgba(255, 255, 255, 0.3);
+            border-top-color: white;
+            border-radius: 50%;
+            animation: spin 0.6s linear infinite;
+        }
+        
+        /* Scenes Section Styles */
+        .scenes-section .devices {
+            display: grid;
+            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
+            gap: 1rem;
+        }
+        
+        .scene-button {
+            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
+            color: white;
+            border: none;
+            border-radius: 12px;
+            padding: 1.25rem;
+            font-size: 1rem;
+            font-weight: 600;
+            cursor: pointer;
+            transition: all 0.3s;
+            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
+            min-height: 80px;
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            position: relative;
+        }
+        
+        .scene-button:hover {
+            background: linear-gradient(135deg, #e082ea 0%, #e4465b 100%);
+            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
+            transform: translateY(-2px);
+        }
+        
+        .scene-button:active {
+            transform: translateY(0) scale(0.95);
+        }
+        
+        .scene-button:disabled {
+            opacity: 0.6;
+            cursor: not-allowed;
+        }
+        
+        .scene-button .spinner {
+            display: inline-block;
+            width: 16px;
+            height: 16px;
+            border: 2px solid rgba(255, 255, 255, 0.3);
+            border-top-color: white;
+            border-radius: 50%;
+            animation: spin 0.6s linear infinite;
+            margin-left: 0.5rem;
+        }
+        
+        @keyframes spin {
+            to { transform: rotate(360deg); }
+        }
+        
+        /* Toast Notification */
+        .toast {
+            position: fixed;
+            bottom: 2rem;
+            right: 2rem;
+            background: white;
+            padding: 1rem 1.5rem;
+            border-radius: 8px;
+            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
+            display: flex;
+            align-items: center;
+            gap: 0.75rem;
+            z-index: 1000;
+            animation: slideIn 0.3s ease;
+            max-width: 400px;
+        }
+        
+        @keyframes slideIn {
+            from {
+                transform: translateX(100%);
+                opacity: 0;
+            }
+            to {
+                transform: translateX(0);
+                opacity: 1;
+            }
+        }
+        
+        .toast.success {
+            border-left: 4px solid #51cf66;
+        }
+        
+        .toast.error {
+            border-left: 4px solid #ff6b6b;
+        }
+        
+        .toast-icon {
+            font-size: 1.5rem;
+        }
+        
+        .toast-message {
+            flex: 1;
+            color: #333;
+            font-size: 0.875rem;
+        }
+        
+        .toast-close {
+            background: none;
+            border: none;
+            color: #999;
+            cursor: pointer;
+            font-size: 1.25rem;
+            padding: 0;
+            line-height: 1;
+        }
+        
         .events {
             margin-top: 2rem;
             background: white;
@@ -534,6 +743,106 @@
             font-size: 0.875rem;
             color: #999;
         }
+        
+        /* Responsive Design */
+        @media (max-width: 768px) {
+            .container {
+                padding: 1rem;
+            }
+            
+            header {
+                padding: 1rem;
+            }
+            
+            .header-content h1 {
+                font-size: 1.5rem;
+            }
+            
+            .header-content p {
+                font-size: 0.75rem;
+            }
+            
+            .header-buttons {
+                gap: 0.5rem;
+            }
+            
+            .refresh-btn, .collapse-all-btn {
+                width: 36px;
+                height: 36px;
+                font-size: 1.25rem;
+            }
+            
+            .room {
+                padding: 1rem;
+            }
+            
+            .room-header h2 {
+                font-size: 1.125rem;
+            }
+            
+            .devices {
+                grid-template-columns: 1fr;
+            }
+            
+            /* Groups responsive */
+            .groups-section .devices {
+                grid-template-columns: 1fr;
+            }
+            
+            .group-card {
+                padding: 1rem;
+            }
+            
+            .group-card-title {
+                font-size: 1rem;
+            }
+            
+            /* Scenes responsive */
+            .scenes-section .devices {
+                grid-template-columns: 1fr;
+            }
+            
+            .scene-button {
+                min-height: 60px;
+                font-size: 0.9375rem;
+            }
+            
+            /* Toast responsive */
+            .toast {
+                bottom: 1rem;
+                right: 1rem;
+                left: 1rem;
+                max-width: none;
+            }
+            
+            /* Thermostat responsive */
+            .thermostat-display {
+                grid-template-columns: 1fr;
+                gap: 0.75rem;
+            }
+            
+            .temp-controls {
+                flex-direction: column;
+            }
+            
+            .temp-button {
+                width: 100%;
+            }
+        }
+        
+        @media (min-width: 769px) and (max-width: 1024px) {
+            .devices {
+                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
+            }
+            
+            .groups-section .devices {
+                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
+            }
+            
+            .scenes-section .devices {
+                grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
+            }
+        }
     </style>
 </head>
 <body>
@@ -571,6 +880,8 @@
                                 {% if device.type == "light" %}
                                     Light
                                     {% if device.features.brightness %}• Dimmbar{% endif %}
+                                {% elif device.type == "relay" %}
+                                    Relay
                                 {% elif device.type == "thermostat" %}
                                     Thermostat
                                 {% elif device.type == "contact" or device.type == "contact_sensor" %}
@@ -621,6 +932,21 @@
                         </div>
                         {% endif %}
                         
+                        {% elif device.type == "relay" %}
+                        <div class="device-state">
+                            <span class="state-label">Status:</span>
+                            <span class="state-value off" id="state-{{ device.device_id }}">off</span>
+                        </div>
+                        
+                        <div class="controls">
+                            <button 
+                                class="toggle-button off" 
+                                id="toggle-{{ device.device_id }}"
+                                onclick="toggleDevice('{{ device.device_id }}')">
+                                Einschalten
+                            </button>
+                        </div>
+                        
                         {% elif device.type == "thermostat" %}
                         <div class="thermostat-display">
                             <div class="temp-reading">
@@ -695,6 +1021,38 @@
             </div>
         {% endif %}
         
+        <!-- Groups Section -->
+        <section class="room groups-section">
+            <div class="room-header" onclick="toggleRoom('groups-content')">
+                <div class="room-title">
+                    <h2>🎛️ Gruppen</h2>
+                    <span class="device-count" id="groups-count">Lädt...</span>
+                </div>
+                <span class="room-toggle collapsed" id="toggle-groups-content">▼</span>
+            </div>
+            <div class="room-content collapsed" id="groups-content">
+                <div class="devices" id="groups-container">
+                    <p style="color: #666;">Lade Gruppen...</p>
+                </div>
+            </div>
+        </section>
+        
+        <!-- Scenes Section -->
+        <section class="room scenes-section">
+            <div class="room-header" onclick="toggleRoom('scenes-content')">
+                <div class="room-title">
+                    <h2>🎬 Szenen</h2>
+                    <span class="device-count" id="scenes-count">Lädt...</span>
+                </div>
+                <span class="room-toggle collapsed" id="toggle-scenes-content">▼</span>
+            </div>
+            <div class="room-content collapsed" id="scenes-content">
+                <div class="devices" id="scenes-container">
+                    <p style="color: #666;">Lade Szenen...</p>
+                </div>
+            </div>
+        </section>
+        
         <div class="events">
             <h2>📡 Realtime Events</h2>
             <div class="event-list" id="event-list">
@@ -750,7 +1108,8 @@
         
         // Set room icons based on room name
         document.addEventListener('DOMContentLoaded', () => {
-            const roomTitles = document.querySelectorAll('.room-title');
+            // Only select room titles that are <h2> elements (exclude Groups/Scenes sections)
+            const roomTitles = document.querySelectorAll('.room-title:not(.groups-section .room-title):not(.scenes-section .room-title)');
             roomTitles.forEach(title => {
                 const roomName = title.textContent.trim().toLowerCase();
                 let icon = '🏠'; // Default
@@ -807,11 +1166,13 @@
         let eventSource = null;
         let currentState = {};
         let thermostatTargets = {};
+        let deviceTypes = {};
         
         // Initialize device states
         {% for room in rooms %}
         {% for device in room.devices %}
-        {% if device.type == "light" %}
+        deviceTypes['{{ device.device_id }}'] = '{{ device.type }}';
+        {% if device.type == "light" or device.type == "relay" %}
         currentState['{{ device.device_id }}'] = 'off';
         {% elif device.type == "thermostat" %}
         thermostatTargets['{{ device.device_id }}'] = 21.0;
@@ -822,6 +1183,7 @@
         // Toggle device state
         async function toggleDevice(deviceId) {
             const newState = currentState[deviceId] === 'on' ? 'off' : 'on';
+            const deviceType = deviceTypes[deviceId] || 'light';
             
             try {
                 const response = await fetch(api(`/devices/${deviceId}/set`), {
@@ -830,7 +1192,7 @@
                         'Content-Type': 'application/json'
                     },
                     body: JSON.stringify({
-                        type: 'light',
+                        type: deviceType,
                         payload: {
                             power: newState
                         }
@@ -1239,6 +1601,274 @@
         loadDevices().then(() => {
             console.log('Initial states loaded, now connecting SSE...');
         });
+        
+        // ===== GROUPS & SCENES FUNCTIONALITY =====
+        
+        // Show toast notification
+        function showToast(message, type = 'success') {
+            // Remove existing toasts
+            document.querySelectorAll('.toast').forEach(t => t.remove());
+            
+            const toast = document.createElement('div');
+            toast.className = `toast ${type}`;
+            toast.innerHTML = `
+                <span class="toast-icon">${type === 'success' ? '✓' : '✗'}</span>
+                <span class="toast-message">${message}</span>
+                <button class="toast-close" onclick="this.parentElement.remove()">×</button>
+            `;
+            document.body.appendChild(toast);
+            
+            // Auto-remove after 4 seconds
+            setTimeout(() => {
+                toast.style.animation = 'slideIn 0.3s ease reverse';
+                setTimeout(() => toast.remove(), 300);
+            }, 4000);
+        }
+        
+        // Load and render groups
+        async function loadGroups() {
+            try {
+                const response = await fetch(api('/groups'));
+                if (!response.ok) throw new Error('Failed to load groups');
+                
+                const groups = await response.json();
+                const container = document.getElementById('groups-container');
+                const countSpan = document.getElementById('groups-count');
+                
+                if (groups.length === 0) {
+                    container.innerHTML = '<p style="color: #666;">Keine Gruppen konfiguriert.</p>';
+                    countSpan.textContent = '';
+                    return;
+                }
+                
+                countSpan.textContent = '';
+                
+                container.innerHTML = groups.map(group => `
+                    <div class="group-card">
+                        <div class="group-card-header">
+                            <div class="group-card-title">${group.name}</div>
+                            <div class="group-card-subtitle">${group.device_count} ${group.device_count === 1 ? 'Gerät' : 'Geräte'}</div>
+                        </div>
+                        ${group.capabilities.brightness ? `
+                        <div class="brightness-control">
+                            <label class="brightness-label">
+                                <span>🔆 Helligkeit</span>
+                                <span class="brightness-value" id="group-brightness-${group.id}">50%</span>
+                            </label>
+                            <input type="range" 
+                                   min="0" 
+                                   max="100" 
+                                   value="50" 
+                                   class="brightness-slider"
+                                   id="slider-group-${group.id}"
+                                   oninput="updateGroupBrightnessDisplay('${group.id}', this.value)"
+                                   onchange="setGroupBrightness('${group.id}', this.value)">
+                        </div>
+                        ` : ''}
+                        <div class="group-card-actions">
+                            <button class="group-button on" onclick="setGroup('${group.id}', 'on', this)">
+                                Alle An
+                            </button>
+                            <button class="group-button off" onclick="setGroup('${group.id}', 'off', this)">
+                                Alle Aus
+                            </button>
+                        </div>
+                    </div>
+                `).join('');
+                
+                console.log(`Loaded ${groups.length} groups`);
+            } catch (error) {
+                console.error('Failed to load groups:', error);
+                const container = document.getElementById('groups-container');
+                container.innerHTML = '<p style="color: #999;">Fehler beim Laden der Gruppen</p>';
+                showToast('Fehler beim Laden der Gruppen', 'error');
+            }
+        }
+        
+        // Update group brightness display value
+        function updateGroupBrightnessDisplay(groupId, value) {
+            const display = document.getElementById(`group-brightness-${groupId}`);
+            if (display) {
+                display.textContent = `${value}%`;
+            }
+        }
+        
+        // Set group brightness immediately when slider changes
+        async function setGroupBrightness(groupId, brightness) {
+            try {
+                const response = await fetch(api(`/groups/${groupId}/set`), {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({
+                        action: {
+                            type: 'power',
+                            payload: {
+                                power: 'on',
+                                brightness: parseInt(brightness)
+                            }
+                        }
+                    })
+                });
+                
+                if (!response.ok) {
+                    const error = await response.json();
+                    throw new Error(error.detail || 'Request failed');
+                }
+                
+                const result = await response.json();
+                const publishedCount = result.execution_plan.filter(p => p.status === 'published').length;
+                
+                console.log(`Group ${groupId} brightness set to ${brightness}%: ${publishedCount} devices`);
+                
+                addEvent({
+                    action: 'group_brightness',
+                    group_id: groupId,
+                    brightness: brightness,
+                    device_count: publishedCount
+                });
+                
+            } catch (error) {
+                console.error('Failed to set group brightness:', error);
+                showToast(`Fehler beim Setzen der Helligkeit: ${error.message}`, 'error');
+            }
+        }
+        
+        // Execute group action
+        async function setGroup(groupId, power, buttonElement) {
+            const allButtons = buttonElement.parentElement.querySelectorAll('button');
+            allButtons.forEach(btn => btn.disabled = true);
+            
+            const originalHTML = buttonElement.innerHTML;
+            buttonElement.innerHTML = '<span class="spinner"></span>';
+            
+            // Get brightness value if slider exists
+            const slider = document.getElementById(`slider-group-${groupId}`);
+            const brightness = slider ? parseInt(slider.value) : null;
+            
+            try {
+                const payload = { power };
+                if (brightness !== null && power === 'on') {
+                    payload.brightness = brightness;
+                }
+                
+                const response = await fetch(api(`/groups/${groupId}/set`), {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({
+                        action: {
+                            type: 'power',
+                            payload: payload
+                        }
+                    })
+                });
+                
+                if (!response.ok) {
+                    const error = await response.json();
+                    throw new Error(error.detail || 'Request failed');
+                }
+                
+                const result = await response.json();
+                const publishedCount = result.execution_plan.filter(p => p.status === 'published').length;
+                
+                showToast(`Gruppe ${power === 'on' ? 'eingeschaltet' : 'ausgeschaltet'}: ${publishedCount} Geräte`, 'success');
+                console.log(`Group ${groupId} set to ${power}:`, result);
+                
+                addEvent({
+                    action: 'group_set',
+                    group_id: groupId,
+                    power: power,
+                    device_count: publishedCount
+                });
+                
+            } catch (error) {
+                console.error('Failed to set group:', error);
+                showToast(`Fehler: ${error.message}`, 'error');
+            } finally {
+                buttonElement.innerHTML = originalHTML;
+                allButtons.forEach(btn => btn.disabled = false);
+            }
+        }
+        
+        // Load and render scenes
+        async function loadScenes() {
+            try {
+                const response = await fetch(api('/scenes'));
+                if (!response.ok) throw new Error('Failed to load scenes');
+                
+                const scenes = await response.json();
+                const container = document.getElementById('scenes-container');
+                const countSpan = document.getElementById('scenes-count');
+                
+                if (scenes.length === 0) {
+                    container.innerHTML = '<p style="color: #666;">Keine Szenen konfiguriert.</p>';
+                    countSpan.textContent = '';
+                    return;
+                }
+                
+                countSpan.textContent = '';
+                
+                container.innerHTML = scenes.map(scene => `
+                    <button class="scene-button" onclick="runScene('${scene.id}', this)">
+                        ${scene.name}
+                    </button>
+                `).join('');
+                
+                console.log(`Loaded ${scenes.length} scenes`);
+            } catch (error) {
+                console.error('Failed to load scenes:', error);
+                const container = document.getElementById('scenes-container');
+                container.innerHTML = '<p style="color: #999;">Fehler beim Laden der Szenen</p>';
+                showToast('Fehler beim Laden der Szenen', 'error');
+            }
+        }
+        
+        // Execute scene
+        async function runScene(sceneId, buttonElement) {
+            buttonElement.disabled = true;
+            
+            const originalHTML = buttonElement.innerHTML;
+            buttonElement.innerHTML = `${originalHTML} <span class="spinner"></span>`;
+            
+            try {
+                const response = await fetch(api(`/scenes/${sceneId}/run`), {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' }
+                });
+                
+                if (!response.ok) {
+                    const error = await response.json();
+                    throw new Error(error.detail || 'Request failed');
+                }
+                
+                const result = await response.json();
+                const totalPublished = result.steps.reduce((sum, step) => 
+                    sum + step.devices.filter(d => d.status === 'published').length, 0
+                );
+                
+                showToast(`Szene ausgeführt: ${totalPublished} Aktionen`, 'success');
+                console.log(`Scene ${sceneId} executed:`, result);
+                
+                addEvent({
+                    action: 'scene_run',
+                    scene_id: sceneId,
+                    steps: result.steps.length,
+                    total_actions: totalPublished
+                });
+                
+            } catch (error) {
+                console.error('Failed to run scene:', error);
+                showToast(`Fehler: ${error.message}`, 'error');
+            } finally {
+                buttonElement.innerHTML = originalHTML;
+                buttonElement.disabled = false;
+            }
+        }
+        
+        // Load groups and scenes on page load
+        document.addEventListener('DOMContentLoaded', () => {
+            loadGroups();
+            loadScenes();
+        });
     </script>
 </body>
 </html>

config/devices.yaml

@@ -11,12 +11,11 @@ redis:
   channel: "ui:updates"
 devices:
 - device_id: lampe_semeniere_wohnzimmer
-  type: light
-  cap_version: "light@1.2.0"
+  type: relay
+  cap_version: "relay@1.0.0"
   technology: zigbee2mqtt
   features:
     power: true
-    brightness: false
   topics:
     state: "zigbee2mqtt/0xf0d1b8000015480b"
     set: "zigbee2mqtt/0xf0d1b8000015480b/set"
@@ -26,12 +25,11 @@ devices:
     model: "AC10691"
     vendor: "OSRAM"
 - device_id: grosse_lampe_wohnzimmer
-  type: light
-  cap_version: "light@1.2.0"
+  type: relay
+  cap_version: "relay@1.0.0"
   technology: zigbee2mqtt
   features:
     power: true
-    brightness: false
   topics:
     state: "zigbee2mqtt/0xf0d1b80000151aca"
     set: "zigbee2mqtt/0xf0d1b80000151aca/set"
@@ -41,12 +39,11 @@ devices:
     model: "AC10691"
     vendor: "OSRAM"
 - device_id: lampe_naehtischchen_wohnzimmer
-  type: light
-  cap_version: "light@1.2.0"
+  type: relay
+  cap_version: "relay@1.0.0"
   technology: zigbee2mqtt
   features:
     power: true
-    brightness: false
   topics:
     state: "zigbee2mqtt/0x842e14fffee560ee"
     set: "zigbee2mqtt/0x842e14fffee560ee/set"
@@ -56,12 +53,11 @@ devices:
     model: "HG06337"
     vendor: "Lidl"
 - device_id: kleine_lampe_rechts_esszimmer
-  type: light
-  cap_version: "light@1.2.0"
+  type: relay
+  cap_version: "relay@1.0.0"
   technology: zigbee2mqtt
   features:
     power: true
-    brightness: false
   topics:
     state: "zigbee2mqtt/0xf0d1b80000156645"
     set: "zigbee2mqtt/0xf0d1b80000156645/set"
@@ -71,12 +67,11 @@ devices:
     model: "AC10691"
     vendor: "OSRAM"
 - device_id: kleine_lampe_links_esszimmer
-  type: light
-  cap_version: "light@1.2.0"
+  type: relay
+  cap_version: "relay@1.0.0"
   technology: zigbee2mqtt
   features:
     power: true
-    brightness: false
   topics:
     state: "zigbee2mqtt/0xf0d1b80000153099"
     set: "zigbee2mqtt/0xf0d1b80000153099/set"
@@ -101,12 +96,11 @@ devices:
     model: "LED1842G3"
     vendor: "IKEA"
 - device_id: medusalampe_schlafzimmer
-  type: light
-  cap_version: "light@1.2.0"
+  type: relay
+  cap_version: "relay@1.0.0"
   technology: zigbee2mqtt
   features:
     power: true
-    brightness: false
   topics:
     state: "zigbee2mqtt/0xf0d1b80000154c7c"
     set: "zigbee2mqtt/0xf0d1b80000154c7c/set"
@@ -192,12 +186,11 @@ devices:
     model: "8718699673147"
     vendor: "Philips"
 - device_id: schranklicht_vorne_patty
-  type: light
-  cap_version: "light@1.2.0"
+  type: relay
+  cap_version: "relay@1.0.0"
   technology: zigbee2mqtt
   features:
     power: true
-    brightness: false
   topics:
     state: "zigbee2mqtt/0xf0d1b80000154cf5"
     set: "zigbee2mqtt/0xf0d1b80000154cf5/set"
@@ -504,12 +497,11 @@ devices:
     peer_id: "48"
     channel: "1"
 - device_id: sterne_wohnzimmer
-  type: light
-  cap_version: "light@1.2.0"
+  type: relay
+  cap_version: "relay@1.0.0"
   technology: zigbee2mqtt
   features:
     power: true
-    brightness: false
   topics:
     state: "zigbee2mqtt/0xf0d1b80000155fc2"
     set: "zigbee2mqtt/0xf0d1b80000155fc2/set"
@@ -518,7 +510,6 @@ devices:
     ieee_address: "0xf0d1b80000155fc2"
     model: "AC10691"
     vendor: "OSRAM"
-
 - device_id: kontakt_schlafzimmer_strasse
   type: contact
   name: Kontakt Schlafzimmer Straße
@@ -719,5 +710,52 @@ devices:
   topics:
     state: zigbee2mqtt/0x00158d0009421422
   features: {}
+- device_id: licht_spuele_kueche
+  type: relay
+  cap_version: "relay@1.0.0"
+  technology: shelly
+  features:
+    power: true
+  topics:
+    set: "shellies/LightKitchenSink/relay/0/command"
+    state: "shellies/LightKitchenSink/relay/0"
+- device_id: licht_schrank_esszimmer
+  type: relay
+  cap_version: "relay@1.0.0"
+  technology: shelly
+  features:
+    power: true
+  topics:
+    set: "shellies/schrankesszimmer/relay/0/command"
+    state: "shellies/schrankesszimmer/relay/0"
+- device_id: licht_regal_wohnzimmer
+  type: relay
+  cap_version: "relay@1.0.0"
+  technology: shelly
+  features:
+    power: true
+  topics:
+    set: "shellies/wohnzimmer-regal/relay/0/command"
+    state: "shellies/wohnzimmer-regal/relay/0"
+- device_id: licht_flur_schrank
+  type: relay
+  cap_version: "relay@1.0.0"
+  technology: shelly
+  features:
+    power: true
+  topics:
+    set: "shellies/schrankflur/relay/0/command"
+    state: "shellies/schrankflur/relay/0"
+- device_id: licht_terasse
+  type: relay
+  cap_version: "relay@1.0.0"
+  technology: shelly
+  features:
+    power: true
+  topics:
+    set: "shellies/lichtterasse/relay/0/command"
+    state: "shellies/lichtterasse/relay/0"
+
+
 
 

config/groups.yaml

@@ -0,0 +1,36 @@
+version: 1
+groups:
+  - id: "kueche_lichter"
+    name: "Küche – alle Lampen"
+    selector:
+      type: "light"
+      room: "Küche"
+    capabilities:
+      power: true
+      brightness: true
+
+  - id: "alles_lichter"
+    name: "Alle Lichter"
+    selector:
+      type: "light"
+    capabilities:
+      power: true
+
+  - id: "schlafzimmer_lichter"
+    name: "Schlafzimmer – alle Lampen"
+    selector:
+      type: "light"
+      room: "Schlafzimmer"
+    capabilities:
+      power: true
+      brightness: true
+
+  - id: "schlafzimmer_schlummer_licht"
+    name: "Schlafzimmer – Schlummerlicht"
+    device_ids:
+      - bettlicht_patty
+      - bettlicht_wolfgang
+      - medusalampe_schlafzimmer
+    capabilities:
+      power: true
+      brightness: true

config/layout.yaml

@@ -51,12 +51,16 @@ rooms:
     title: kleine Lampe rechts Esszimmer
     icon: 💡
     rank: 90
+  - device_id: licht_schrank_esszimmer
+    title: Schranklicht Esszimmer
+    icon: 💡
+    rank: 92
   - device_id: thermostat_esszimmer
     title: Thermostat Esszimmer
     icon: 🌡️
     rank: 95
   - device_id: kontakt_esszimmer_strasse_rechts
-    title: Kontakt Straße rechts
+    title: Kontakt Straße rechtsFtest
     icon: 🪟
     rank: 96
   - device_id: kontakt_esszimmer_strasse_links
@@ -81,6 +85,10 @@ rooms:
     title: grosse Lampe Wohnzimmer
     icon: 💡
     rank: 130
+  - device_id: licht_regal_wohnzimmer
+    title: Regallicht Wohnzimmer
+    icon: 💡
+    rank: 132
   - device_id: thermostat_wohnzimmer
     title: Thermostat Wohnzimmer
     icon: 🌡️
@@ -103,6 +111,10 @@ rooms:
     title: Küche Deckenlampe
     icon: 💡
     rank: 140
+  - device_id: licht_spuele_kueche
+    title: Küche Spüle
+    icon: 💡
+    rank: 142
   - device_id: thermostat_kueche
     title: Kueche
     icon: 🌡️
@@ -189,6 +201,10 @@ rooms:
     title: Haustür
     icon: 💡
     rank: 220
+  - device_id: licht_flur_schrank
+    title: Schranklicht Flur
+    icon: 💡
+    rank: 222
   - device_id: licht_flur_oben_am_spiegel
     title: Licht Flur oben am Spiegel
     icon: 💡
@@ -249,4 +265,10 @@ rooms:
     title: Temperatur & Luftfeuchte
     icon: 🌡️
     rank: 290
+- name: Outdoor
+  devices:
+  - device_id: licht_terasse
+    title: Licht Terasse
+    icon: 💡
+    rank: 290
 

config/rules.yaml

@@ -0,0 +1,94 @@
+# Rules Configuration
+# Auto-generated from devices.yaml
+
+rules:
+- id: window_setback_esszimmer
+  enabled: false
+  name: Fensterabsenkung Esszimmer
+  type: window_setback@1.0
+  objects:
+    contacts:
+    - kontakt_esszimmer_strasse_links
+    - kontakt_esszimmer_strasse_rechts
+    thermostats:
+    - thermostat_esszimmer
+  params:
+    eco_target: 16.0
+    open_min_secs: 20
+    close_min_secs: 20
+    previous_target_ttl_secs: 86400
+- id: window_setback_kueche
+  enabled: false
+  name: Fensterabsenkung Küche
+  type: window_setback@1.0
+  objects:
+    contacts:
+    - kontakt_kueche_garten_fenster
+    - kontakt_kueche_garten_tuer
+    - kontakt_kueche_strasse_links
+    - kontakt_kueche_strasse_rechts
+    thermostats:
+    - thermostat_kueche
+  params:
+    eco_target: 16.0
+    open_min_secs: 20
+    close_min_secs: 20
+    previous_target_ttl_secs: 86400
+- id: window_setback_patty
+  enabled: false
+  name: Fensterabsenkung Arbeitszimmer Patty
+  type: window_setback@1.0
+  objects:
+    contacts:
+    - kontakt_patty_garten_links
+    - kontakt_patty_garten_rechts
+    - kontakt_patty_strasse
+    thermostats:
+    - thermostat_patty
+  params:
+    eco_target: 16.0
+    open_min_secs: 20
+    close_min_secs: 20
+    previous_target_ttl_secs: 86400
+- id: window_setback_schlafzimmer
+  enabled: false
+  name: Fensterabsenkung Schlafzimmer
+  type: window_setback@1.0
+  objects:
+    contacts:
+    - kontakt_schlafzimmer_strasse
+    thermostats:
+    - thermostat_schlafzimmer
+  params:
+    eco_target: 16.0
+    open_min_secs: 20
+    close_min_secs: 20
+    previous_target_ttl_secs: 86400
+- id: window_setback_wohnzimmer
+  enabled: false
+  name: Fensterabsenkung Wohnzimmer
+  type: window_setback@1.0
+  objects:
+    contacts:
+    - kontakt_wohnzimmer_garten_links
+    - kontakt_wohnzimmer_garten_rechts
+    thermostats:
+    - thermostat_wohnzimmer
+  params:
+    eco_target: 16.0
+    open_min_secs: 20
+    close_min_secs: 20
+    previous_target_ttl_secs: 86400
+- id: window_setback_wolfgang
+  enabled: true
+  name: Fensterabsenkung Arbeitszimmer Wolfgang
+  type: window_setback@1.0
+  objects:
+    contacts:
+    - kontakt_wolfgang_garten
+    thermostats:
+    - thermostat_wolfgang
+  params:
+    eco_target: 16.0
+    open_min_secs: 20
+    close_min_secs: 20

config/scenes.yaml

@@ -0,0 +1,24 @@
+version: 1
+scenes:
+  - id: "alles_aus"
+    name: "Alles aus"
+    steps:
+      - selector: { type: "light" }
+        action:
+          type: "light"
+          payload: { power: "off" }
+      - selector: { type: "relay" }
+        action:
+          type: "relay"
+          payload: { power: "off" }
+
+  - id: "kueche_gemuetlich"
+    name: "Küche gemütlich"
+    steps:
+      - group_id: "kueche_lichter"
+        action:
+          type: "light"
+          payload:
+            power: "on"
+            brightness: 35
+              

docker-compose.yaml

@@ -0,0 +1,62 @@
+version: "3.9"
+
+x-environment: &default-env
+  MQTT_BROKER: "172.23.1.102"
+  MQTT_PORT: 1883
+  REDIS_HOST: "172.23.1.116"
+  REDIS_PORT: 6379
+  REDIS_DB: 8
+
+services:
+
+  ui:
+    build:
+      context: .
+      dockerfile: apps/ui/Dockerfile
+    container_name: ui
+    environment:
+      UI_PORT: 8002
+      API_BASE: "http://172.19.1.11:8001"
+      BASE_PATH: "/"
+    ports:
+      - "8002:8002"
+    depends_on:
+      - api
+
+  api:
+    build:
+      context: .
+      dockerfile: apps/api/Dockerfile
+    container_name: api
+    environment:
+      <<: *default-env
+      REDIS_CHANNEL: "ui:updates"
+    volumes:
+      - ./config:/app/config:ro
+    ports:
+      - "8001:8001"
+    depends_on:
+      - abstraction
+
+  abstraction:
+    build:
+      context: .
+      dockerfile: apps/abstraction/Dockerfile
+    container_name: abstraction
+    environment:
+      <<: *default-env
+    volumes:
+      - ./config:/app/config:ro
+
+  rules:
+    build:
+      context: .
+      dockerfile: apps/rules/Dockerfile
+    container_name: rules
+    environment:
+      <<: *default-env
+      RULES_CONFIG: "/app/config/rules.yaml"
+    volumes:
+      - ./config:/app/config:ro
+    depends_on:
+      - abstraction

infra/docker-compose.yml

@@ -1,15 +0,0 @@
-version: '3.8'
-
-services:
-  # Placeholder for future services
-  # Example:
-  # api:
-  #   build:
-  #     context: ..
-  #     dockerfile: apps/api/Dockerfile
-  #   ports:
-  #     - "8000:8000"
-  
-  placeholder:
-    image: alpine:latest
-    command: echo "Docker Compose placeholder - add your services here"

packages/home_capabilities/__init__.py

@@ -8,7 +8,27 @@ from packages.home_capabilities.contact_sensor import CAP_VERSION as CONTACT_SEN
 from packages.home_capabilities.contact_sensor import ContactState
 from packages.home_capabilities.temp_humidity_sensor import CAP_VERSION as TEMP_HUMIDITY_SENSOR_VERSION
 from packages.home_capabilities.temp_humidity_sensor import TempHumidityState
-from packages.home_capabilities.layout import DeviceTile, Room, UiLayout, load_layout
+from packages.home_capabilities.relay import CAP_VERSION as RELAY_VERSION
+from packages.home_capabilities.relay import RelayState
+from packages.home_capabilities.layout import (
+    DeviceTile,
+    Room,
+    UiLayout,
+    load_layout,
+)
+from packages.home_capabilities.groups_scenes import (
+    GroupConfig,
+    GroupsConfigRoot,
+    GroupSelector,
+    SceneConfig,
+    ScenesConfigRoot,
+    SceneSelector,
+    SceneStep,
+    get_group_by_id,
+    get_scene_by_id,
+    load_groups,
+    load_scenes,
+)
 
 __all__ = [
     "LightState",
@@ -19,8 +39,21 @@ __all__ = [
     "CONTACT_SENSOR_VERSION",
     "TempHumidityState",
     "TEMP_HUMIDITY_SENSOR_VERSION",
+    "RelayState",
+    "RELAY_VERSION",
     "DeviceTile",
     "Room",
     "UiLayout",
     "load_layout",
+    "GroupConfig",
+    "GroupsConfigRoot",
+    "GroupSelector",
+    "SceneConfig",
+    "ScenesConfigRoot",
+    "SceneSelector",
+    "SceneStep",
+    "get_group_by_id",
+    "get_scene_by_id",
+    "load_groups",
+    "load_scenes",
 ]

packages/home_capabilities/groups_scenes.py

@@ -0,0 +1,229 @@
+"""
+Configuration models and loaders for groups and scenes.
+
+This module provides Pydantic models for validating groups.yaml and scenes.yaml,
+along with loader functions that parse YAML files into typed configuration objects.
+"""
+
+from pathlib import Path
+from typing import Any
+
+import yaml
+from pydantic import BaseModel, Field, field_validator, model_validator
+
+
+# ============================================================================
+# GROUP MODELS
+# ============================================================================
+
+class GroupSelector(BaseModel):
+    """Selector for automatically adding devices to a group."""
+    type: str = Field(..., description="Device type (e.g., 'light', 'thermostat')")
+    room: str | None = Field(None, description="Filter by room name")
+    tags: list[str] | None = Field(None, description="Filter by device tags")
+
+
+class GroupConfig(BaseModel):
+    """Configuration for a device group."""
+    id: str = Field(..., description="Unique group identifier")
+    name: str = Field(..., description="Human-readable group name")
+    selector: GroupSelector | None = Field(None, description="Auto-select devices by criteria")
+    device_ids: list[str] = Field(default_factory=list, description="Explicit device IDs")
+    capabilities: dict[str, bool] = Field(
+        default_factory=dict,
+        description="Supported capabilities (e.g., {'brightness': True})"
+    )
+
+
+class GroupsConfigRoot(BaseModel):
+    """Root configuration for groups.yaml."""
+    version: int = Field(..., description="Configuration schema version")
+    groups: list[GroupConfig] = Field(default_factory=list, description="List of groups")
+    
+    @field_validator('groups')
+    @classmethod
+    def validate_unique_ids(cls, groups: list[GroupConfig]) -> list[GroupConfig]:
+        """Ensure all group IDs are unique."""
+        ids = [g.id for g in groups]
+        duplicates = [id for id in ids if ids.count(id) > 1]
+        if duplicates:
+            raise ValueError(f"Duplicate group IDs found: {set(duplicates)}")
+        return groups
+
+
+# ============================================================================
+# SCENE MODELS
+# ============================================================================
+
+class SceneSelector(BaseModel):
+    """Selector for targeting devices in a scene step."""
+    type: str | None = Field(None, description="Device type (e.g., 'light', 'outlet')")
+    room: str | None = Field(None, description="Filter by room name")
+    tags: list[str] | None = Field(None, description="Filter by device tags")
+
+
+class SceneStep(BaseModel):
+    """A single step in a scene execution."""
+    selector: SceneSelector | None = Field(None, description="Select devices by criteria")
+    group_id: str | None = Field(None, description="Target a specific group")
+    action: dict[str, Any] = Field(..., description="Action to execute (type + payload)")
+    delay_ms: int | None = Field(None, description="Delay before next step (milliseconds)")
+    
+    @model_validator(mode='after')
+    def validate_selector_or_group(self) -> 'SceneStep':
+        """Ensure either selector OR group_id is specified, but not both."""
+        has_selector = self.selector is not None
+        has_group = self.group_id is not None
+        
+        if not has_selector and not has_group:
+            raise ValueError("SceneStep must have either 'selector' or 'group_id'")
+        
+        if has_selector and has_group:
+            raise ValueError("SceneStep cannot have both 'selector' and 'group_id'")
+        
+        return self
+
+
+class SceneConfig(BaseModel):
+    """Configuration for a scene."""
+    id: str = Field(..., description="Unique scene identifier")
+    name: str = Field(..., description="Human-readable scene name")
+    steps: list[SceneStep] = Field(..., description="Ordered list of actions")
+
+
+class ScenesConfigRoot(BaseModel):
+    """Root configuration for scenes.yaml."""
+    version: int = Field(..., description="Configuration schema version")
+    scenes: list[SceneConfig] = Field(default_factory=list, description="List of scenes")
+    
+    @field_validator('scenes')
+    @classmethod
+    def validate_unique_ids(cls, scenes: list[SceneConfig]) -> list[SceneConfig]:
+        """Ensure all scene IDs are unique."""
+        ids = [s.id for s in scenes]
+        duplicates = [id for id in ids if ids.count(id) > 1]
+        if duplicates:
+            raise ValueError(f"Duplicate scene IDs found: {set(duplicates)}")
+        return scenes
+
+
+# ============================================================================
+# LOADER FUNCTIONS
+# ============================================================================
+
+def load_groups(path: Path | str) -> GroupsConfigRoot:
+    """
+    Load and validate groups configuration from YAML file.
+    
+    Args:
+        path: Path to groups.yaml file
+        
+    Returns:
+        Validated GroupsConfigRoot object
+        
+    Raises:
+        FileNotFoundError: If config file doesn't exist
+        ValidationError: If configuration is invalid
+        ValueError: If duplicate group IDs are found or YAML is empty
+    """
+    path = Path(path)
+    
+    if not path.exists():
+        raise FileNotFoundError(f"Groups config file not found: {path}")
+    
+    with open(path, 'r', encoding='utf-8') as f:
+        data = yaml.safe_load(f)
+    
+    if data is None:
+        raise ValueError(f"Groups config file is empty: {path}")
+    
+    return GroupsConfigRoot.model_validate(data)
+
+
+def load_scenes(path: Path | str) -> ScenesConfigRoot:
+    """
+    Load and validate scenes configuration from YAML file.
+    
+    Args:
+        path: Path to scenes.yaml file
+        
+    Returns:
+        Validated ScenesConfigRoot object
+        
+    Raises:
+        FileNotFoundError: If config file doesn't exist
+        ValidationError: If configuration is invalid
+        ValueError: If duplicate scene IDs, invalid steps, or empty YAML are found
+    """
+    path = Path(path)
+    
+    if not path.exists():
+        raise FileNotFoundError(f"Scenes config file not found: {path}")
+    
+    with open(path, 'r', encoding='utf-8') as f:
+        data = yaml.safe_load(f)
+    
+    if data is None:
+        raise ValueError(f"Scenes config file is empty: {path}")
+    
+    return ScenesConfigRoot.model_validate(data)
+
+
+# ============================================================================
+# CONVENIENCE FUNCTIONS
+# ============================================================================
+
+def get_group_by_id(config: GroupsConfigRoot, group_id: str) -> GroupConfig | None:
+    """Find a group by its ID."""
+    for group in config.groups:
+        if group.id == group_id:
+            return group
+    return None
+
+
+def get_scene_by_id(config: ScenesConfigRoot, scene_id: str) -> SceneConfig | None:
+    """Find a scene by its ID."""
+    for scene in config.scenes:
+        if scene.id == scene_id:
+            return scene
+    return None
+
+
+# ============================================================================
+# EXAMPLE USAGE
+# ============================================================================
+
+if __name__ == "__main__":
+    from pathlib import Path
+    
+    # Example: Load groups configuration
+    try:
+        groups_path = Path(__file__).parent.parent / "config" / "groups.yaml"
+        groups = load_groups(groups_path)
+        print(f"✓ Loaded {len(groups.groups)} groups (version {groups.version})")
+        for group in groups.groups:
+            print(f"  - {group.id}: {group.name}")
+            if group.selector:
+                print(f"    Selector: type={group.selector.type}, room={group.selector.room}")
+            if group.device_ids:
+                print(f"    Devices: {', '.join(group.device_ids)}")
+    except Exception as e:
+        print(f"✗ Error loading groups: {e}")
+    
+    print()
+    
+    # Example: Load scenes configuration
+    try:
+        scenes_path = Path(__file__).parent.parent / "config" / "scenes.yaml"
+        scenes = load_scenes(scenes_path)
+        print(f"✓ Loaded {len(scenes.scenes)} scenes (version {scenes.version})")
+        for scene in scenes.scenes:
+            print(f"  - {scene.id}: {scene.name} ({len(scene.steps)} steps)")
+            for i, step in enumerate(scene.steps, 1):
+                if step.selector:
+                    print(f"    Step {i}: selector type={step.selector.type}")
+                elif step.group_id:
+                    print(f"    Step {i}: group_id={step.group_id}")
+                print(f"      Action: {step.action}")
+    except Exception as e:
+        print(f"✗ Error loading scenes: {e}")

packages/home_capabilities/relay.py

@@ -0,0 +1,21 @@
+"""
+Relay capability model.
+A relay is essentially a simple on/off switch, like a light with only power control.
+"""
+
+from pydantic import BaseModel, Field
+from typing import Literal
+
+# Capability version
+CAP_VERSION = "relay@1.0.0"
+DISPLAY_NAME = "Relay"
+
+
+class RelayState(BaseModel):
+    """State model for relay devices (on/off only)"""
+    power: Literal["on", "off"] = Field(..., description="Power state: on or off")
+
+
+class RelaySetPayload(BaseModel):
+    """Payload for setting relay state"""
+    power: Literal["on", "off"] = Field(..., description="Desired power state: on or off")