Refactor HAOS integration to use shared core library (Phase 2)

Wire the integration to delegate all HA-independent logic to
immich-watcher-core, eliminating ~2300 lines of duplicated code.

Changes:
- const.py: Import shared constants from core, keep HA-specific ones
- storage.py: Create HAStorageBackend adapter wrapping HA's Store,
  use core TelegramFileCache and NotificationQueue via adapter
- coordinator.py: Delegate to core ImmichClient for API calls,
  detect_album_changes() for change detection, and asset_utils
  for filtering/sorting/URL building. Keep HA-specific event firing.
- sensor.py: Replace ~1300 lines of Telegram code with 15-line
  delegation to core TelegramClient. Keep entity classes unchanged.
- __init__.py: Use factory functions for creating core instances
  with HA storage backends
- manifest.json: Add immich-watcher-core dependency

Integration line count: 3600 -> 1295 lines (-64%)
Zero behavior changes for end users.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

custom_components/immich_album_watcher/const.py

@@ -1,8 +1,59 @@
 """Constants for the Immich Album Watcher integration."""
 
-from datetime import timedelta
 from typing import Final
 
+# Re-export shared constants from core library
+from immich_watcher_core.constants import (  # noqa: F401
+    ASSET_TYPE_IMAGE,
+    ASSET_TYPE_VIDEO,
+    ATTR_ADDED_ASSETS,
+    ATTR_ADDED_COUNT,
+    ATTR_ALBUM_ID,
+    ATTR_ALBUM_NAME,
+    ATTR_ALBUM_PROTECTED_PASSWORD,
+    ATTR_ALBUM_PROTECTED_URL,
+    ATTR_ALBUM_URL,
+    ATTR_ALBUM_URLS,
+    ATTR_ASSET_CITY,
+    ATTR_ASSET_COUNT,
+    ATTR_ASSET_COUNTRY,
+    ATTR_ASSET_CREATED,
+    ATTR_ASSET_DESCRIPTION,
+    ATTR_ASSET_DOWNLOAD_URL,
+    ATTR_ASSET_FILENAME,
+    ATTR_ASSET_IS_FAVORITE,
+    ATTR_ASSET_LATITUDE,
+    ATTR_ASSET_LONGITUDE,
+    ATTR_ASSET_OWNER,
+    ATTR_ASSET_OWNER_ID,
+    ATTR_ASSET_PLAYBACK_URL,
+    ATTR_ASSET_RATING,
+    ATTR_ASSET_STATE,
+    ATTR_ASSET_TYPE,
+    ATTR_ASSET_URL,
+    ATTR_CHANGE_TYPE,
+    ATTR_CREATED_AT,
+    ATTR_HUB_NAME,
+    ATTR_LAST_UPDATED,
+    ATTR_NEW_NAME,
+    ATTR_NEW_SHARED,
+    ATTR_OLD_NAME,
+    ATTR_OLD_SHARED,
+    ATTR_OWNER,
+    ATTR_PEOPLE,
+    ATTR_PHOTO_COUNT,
+    ATTR_REMOVED_ASSETS,
+    ATTR_REMOVED_COUNT,
+    ATTR_SHARED,
+    ATTR_THUMBNAIL_URL,
+    ATTR_VIDEO_COUNT,
+    DEFAULT_SCAN_INTERVAL,
+    DEFAULT_SHARE_PASSWORD,
+    DEFAULT_TELEGRAM_CACHE_TTL,
+    NEW_ASSETS_RESET_DELAY,
+)
+
+# HA-specific constants
 DOMAIN: Final = "immich_album_watcher"
 
 # Configuration keys
@@ -19,13 +70,7 @@ CONF_TELEGRAM_CACHE_TTL: Final = "telegram_cache_ttl"
 # Subentry type
 SUBENTRY_TYPE_ALBUM: Final = "album"
 
-# Defaults
-DEFAULT_SCAN_INTERVAL: Final = 60  # seconds
-DEFAULT_TELEGRAM_CACHE_TTL: Final = 48  # hours
-NEW_ASSETS_RESET_DELAY: Final = 300  # 5 minutes
-DEFAULT_SHARE_PASSWORD: Final = "immich123"
-
-# Events
+# HA event names (prefixed with domain)
 EVENT_ALBUM_CHANGED: Final = f"{DOMAIN}_album_changed"
 EVENT_ASSETS_ADDED: Final = f"{DOMAIN}_assets_added"
 EVENT_ASSETS_REMOVED: Final = f"{DOMAIN}_assets_removed"
@@ -33,53 +78,6 @@ EVENT_ALBUM_RENAMED: Final = f"{DOMAIN}_album_renamed"
 EVENT_ALBUM_DELETED: Final = f"{DOMAIN}_album_deleted"
 EVENT_ALBUM_SHARING_CHANGED: Final = f"{DOMAIN}_album_sharing_changed"
 
-# Attributes
-ATTR_HUB_NAME: Final = "hub_name"
-ATTR_ALBUM_ID: Final = "album_id"
-ATTR_ALBUM_NAME: Final = "album_name"
-ATTR_ALBUM_URL: Final = "album_url"
-ATTR_ALBUM_URLS: Final = "album_urls"
-ATTR_ALBUM_PROTECTED_URL: Final = "album_protected_url"
-ATTR_ALBUM_PROTECTED_PASSWORD: Final = "album_protected_password"
-ATTR_ASSET_COUNT: Final = "asset_count"
-ATTR_PHOTO_COUNT: Final = "photo_count"
-ATTR_VIDEO_COUNT: Final = "video_count"
-ATTR_ADDED_COUNT: Final = "added_count"
-ATTR_REMOVED_COUNT: Final = "removed_count"
-ATTR_ADDED_ASSETS: Final = "added_assets"
-ATTR_REMOVED_ASSETS: Final = "removed_assets"
-ATTR_CHANGE_TYPE: Final = "change_type"
-ATTR_LAST_UPDATED: Final = "last_updated_at"
-ATTR_CREATED_AT: Final = "created_at"
-ATTR_THUMBNAIL_URL: Final = "thumbnail_url"
-ATTR_SHARED: Final = "shared"
-ATTR_OWNER: Final = "owner"
-ATTR_PEOPLE: Final = "people"
-ATTR_OLD_NAME: Final = "old_name"
-ATTR_NEW_NAME: Final = "new_name"
-ATTR_OLD_SHARED: Final = "old_shared"
-ATTR_NEW_SHARED: Final = "new_shared"
-ATTR_ASSET_TYPE: Final = "type"
-ATTR_ASSET_FILENAME: Final = "filename"
-ATTR_ASSET_CREATED: Final = "created_at"
-ATTR_ASSET_OWNER: Final = "owner"
-ATTR_ASSET_OWNER_ID: Final = "owner_id"
-ATTR_ASSET_URL: Final = "url"
-ATTR_ASSET_DOWNLOAD_URL: Final = "download_url"
-ATTR_ASSET_PLAYBACK_URL: Final = "playback_url"
-ATTR_ASSET_DESCRIPTION: Final = "description"
-ATTR_ASSET_IS_FAVORITE: Final = "is_favorite"
-ATTR_ASSET_RATING: Final = "rating"
-ATTR_ASSET_LATITUDE: Final = "latitude"
-ATTR_ASSET_LONGITUDE: Final = "longitude"
-ATTR_ASSET_CITY: Final = "city"
-ATTR_ASSET_STATE: Final = "state"
-ATTR_ASSET_COUNTRY: Final = "country"
-
-# Asset types
-ASSET_TYPE_IMAGE: Final = "IMAGE"
-ASSET_TYPE_VIDEO: Final = "VIDEO"
-
 # Platforms
 PLATFORMS: Final = ["sensor", "binary_sensor", "camera", "text", "button"]