Add standalone FastAPI server backend (Phase 3)

Build a complete standalone web server for Immich album change
notifications, independent of Home Assistant. Uses the shared
core library from Phase 1.

Server features:
- FastAPI with async SQLite (SQLModel + aiosqlite)
- Multi-user auth with JWT (admin/user roles, setup wizard)
- CRUD APIs: Immich servers, album trackers, message templates,
  notification targets (Telegram + webhook), user management
- APScheduler background polling per tracker
- Jinja2 template rendering with live preview
- Album browser proxied from Immich API
- Event logging and dashboard status endpoint
- Docker deployment (single container, SQLite in volume)

39 API routes, 14 integration tests passing.

Also adds Phase 6 (Claude AI Telegram bot enhancement) to the
primary plan as an optional future phase.

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

packages/server/pyproject.toml

@@ -0,0 +1,34 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "immich-watcher-server"
+version = "0.1.0"
+description = "Standalone Immich album change notification server"
+requires-python = ">=3.12"
+dependencies = [
+    "immich-watcher-core==0.1.0",
+    "fastapi>=0.115",
+    "uvicorn[standard]>=0.32",
+    "sqlmodel>=0.0.22",
+    "aiosqlite>=0.20",
+    "pyjwt>=2.9",
+    "bcrypt>=4.2",
+    "apscheduler>=3.10,<4",
+    "jinja2>=3.1",
+    "aiohttp>=3.9",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=8.0",
+    "pytest-asyncio>=0.23",
+    "httpx>=0.27",
+]
+
+[project.scripts]
+immich-watcher = "immich_watcher_server.main:run"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/immich_watcher_server"]