feat(notify-bridge): phase 6 - database models and server API

New database schema with ServiceProvider abstraction:
- ServiceProvider (replaces ImmichServer): type + JSON config
- Tracker (replaces AlbumTracker): owns tracking_config_id
- TrackingConfig: provider_type scoped, owned by Tracker
- TemplateConfig: provider_type scoped, owned by Target
- NotificationTarget: owns template_config_id (not tracking_config_id)
- TrackerState, EventLog, User, TelegramBot, TelegramChat

Full FastAPI server:
- /api/providers: CRUD + test connection + list collections
- /api/trackers: CRUD
- /api/tracking-configs: CRUD with provider_type filter
- /api/template-configs: CRUD with provider_type filter, system defaults
- /api/targets: CRUD
- /api/template-vars: variable docs filtered by provider type
- /api/auth: setup, login, refresh, me, password change
- /api/health: health check
- Default template seeding on first startup (EN/RU for Immich)
- pydantic-settings with NOTIFY_BRIDGE_ env prefix

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

packages/server/src/notify_bridge_server/api/trackers.py

@@ -0,0 +1,104 @@
+"""Tracker CRUD API routes."""
+
+from fastapi import APIRouter, Depends, HTTPException
+from pydantic import BaseModel
+from sqlmodel import select
+from sqlmodel.ext.asyncio.session import AsyncSession
+
+from ..auth.dependencies import get_current_user
+from ..database.engine import get_session
+from ..database.models import Tracker, User
+
+router = APIRouter(prefix="/api/trackers", tags=["trackers"])
+
+
+class TrackerCreate(BaseModel):
+    provider_id: int
+    name: str
+    icon: str = ""
+    collection_ids: list[str] = []
+    target_ids: list[int] = []
+    tracking_config_id: int | None = None
+    scan_interval: int = 60
+    enabled: bool = True
+    quiet_hours_start: str | None = None
+    quiet_hours_end: str | None = None
+
+
+class TrackerUpdate(BaseModel):
+    name: str | None = None
+    icon: str | None = None
+    collection_ids: list[str] | None = None
+    target_ids: list[int] | None = None
+    tracking_config_id: int | None = None
+    scan_interval: int | None = None
+    enabled: bool | None = None
+    quiet_hours_start: str | None = None
+    quiet_hours_end: str | None = None
+
+
+@router.get("")
+async def list_trackers(
+    user: User = Depends(get_current_user),
+    session: AsyncSession = Depends(get_session),
+):
+    result = await session.exec(select(Tracker).where(Tracker.user_id == user.id))
+    return result.all()
+
+
+@router.post("", status_code=201)
+async def create_tracker(
+    body: TrackerCreate,
+    user: User = Depends(get_current_user),
+    session: AsyncSession = Depends(get_session),
+):
+    tracker = Tracker(user_id=user.id, **body.model_dump())
+    session.add(tracker)
+    await session.commit()
+    await session.refresh(tracker)
+    return tracker
+
+
+@router.get("/{tracker_id}")
+async def get_tracker(
+    tracker_id: int,
+    user: User = Depends(get_current_user),
+    session: AsyncSession = Depends(get_session),
+):
+    tracker = await session.get(Tracker, tracker_id)
+    if not tracker or tracker.user_id != user.id:
+        raise HTTPException(status_code=404, detail="Tracker not found")
+    return tracker
+
+
+@router.put("/{tracker_id}")
+async def update_tracker(
+    tracker_id: int,
+    body: TrackerUpdate,
+    user: User = Depends(get_current_user),
+    session: AsyncSession = Depends(get_session),
+):
+    tracker = await session.get(Tracker, tracker_id)
+    if not tracker or tracker.user_id != user.id:
+        raise HTTPException(status_code=404, detail="Tracker not found")
+
+    for field, value in body.model_dump(exclude_unset=True).items():
+        setattr(tracker, field, value)
+
+    session.add(tracker)
+    await session.commit()
+    await session.refresh(tracker)
+    return tracker
+
+
+@router.delete("/{tracker_id}", status_code=204)
+async def delete_tracker(
+    tracker_id: int,
+    user: User = Depends(get_current_user),
+    session: AsyncSession = Depends(get_session),
+):
+    tracker = await session.get(Tracker, tracker_id)
+    if not tracker or tracker.user_id != user.id:
+        raise HTTPException(status_code=404, detail="Tracker not found")
+    await session.delete(tracker)
+    await session.commit()