Add enhanced models, scheduled jobs, per-locale templates (Phase 7b)

Backend changes for full blueprint feature parity:

Database models:
- MessageTemplate: add body_ru (locale variant), event_type field
- AlbumTracker: add track_images, track_videos, notify_favorites_only,
  include_people, include_asset_details, max_assets_to_show,
  assets_order_by, assets_order fields
- New ScheduledJob model: supports periodic_summary, scheduled_assets,
  and memory (On This Day) notification modes with full config
  (times, interval, album_mode, limit, filters, sorting)

API:
- New /api/scheduled/* CRUD endpoints for scheduled jobs
- Tracker create/update accept all new filtering fields
- Tracker response includes new fields

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

packages/server/src/immich_watcher_server/database/models.py

@@ -58,6 +58,8 @@ class MessageTemplate(SQLModel, table=True):
     user_id: int = Field(foreign_key="user.id")
     name: str
     body: str = Field(default="")
+    body_ru: str = Field(default="")  # Russian locale variant (empty = use body)
+    event_type: str = Field(default="")  # "" = all events, or specific type
     is_default: bool = Field(default=False)
     created_at: datetime = Field(default_factory=_utcnow)
 
@@ -82,6 +84,43 @@ class AlbumTracker(SQLModel, table=True):
     enabled: bool = Field(default=True)
     quiet_hours_start: str | None = None  # "HH:MM"
     quiet_hours_end: str | None = None  # "HH:MM"
+    # Enhanced filtering (matching HAOS blueprint)
+    track_images: bool = Field(default=True)
+    track_videos: bool = Field(default=True)
+    notify_favorites_only: bool = Field(default=False)
+    include_people: bool = Field(default=True)
+    include_asset_details: bool = Field(default=False)
+    max_assets_to_show: int = Field(default=5)
+    assets_order_by: str = Field(default="none")  # none/date/rating/name/random
+    assets_order: str = Field(default="descending")
+    created_at: datetime = Field(default_factory=_utcnow)
+
+
+class ScheduledJob(SQLModel, table=True):
+    """Scheduled notification job (periodic summary, scheduled assets, memory mode)."""
+
+    __tablename__ = "scheduled_job"
+
+    id: int | None = Field(default=None, primary_key=True)
+    tracker_id: int = Field(foreign_key="album_tracker.id")
+    job_type: str  # "periodic_summary", "scheduled_assets", "memory"
+    enabled: bool = Field(default=True)
+    # Timing
+    times: str = Field(default="09:00")  # "HH:MM, HH:MM"
+    interval_days: int = Field(default=1)  # For periodic: 1=daily, 7=weekly
+    start_date: str = Field(default="2025-01-01")  # For periodic interval anchor
+    # Asset fetching config (scheduled_assets + memory modes)
+    album_mode: str = Field(default="per_album")  # per_album/combined/random
+    limit: int = Field(default=10)
+    favorite_only: bool = Field(default=False)
+    asset_type: str = Field(default="all")  # all/photo/video
+    min_rating: int = Field(default=0)  # 0=no filter, 1-5
+    order_by: str = Field(default="random")
+    order: str = Field(default="descending")
+    min_date: str | None = None
+    max_date: str | None = None
+    # Template
+    message_template: str = Field(default="")  # Custom Jinja2 template for this job
     created_at: datetime = Field(default_factory=_utcnow)