feat(notify-bridge): phase 1 - project scaffolding

Set up the Notify Bridge project structure:
- packages/core (notify_bridge_core) with provider, model, notification, template packages
- packages/server (notify_bridge_server) with FastAPI skeleton and health endpoint
- frontend with SvelteKit 2, Svelte 5, Tailwind CSS v4, static adapter
- Root configs: .gitignore, README.md, CLAUDE.md

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

README.md

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+# Notify Bridge
+
+A generic bridge between service providers and notification targets.
+
+Notify Bridge monitors services (like Immich photo servers) for changes and dispatches
+notifications to configurable targets (Telegram, webhooks) using customizable templates.
+
+## Architecture
+
+- **Service Providers** — Connectors to external services (Immich, more coming)
+- **Trackers** — Monitor specific collections within a provider for changes
+- **Tracking Configs** — Define what events to watch for and scheduling rules
+- **Notification Targets** — Where to send notifications (Telegram chats, webhook URLs)
+- **Template Configs** — Jinja2 templates that format notifications per provider type
+
+## Project Structure
+
+```
+packages/
+  core/       — Shared library: providers, models, notifications, templates
+  server/     — FastAPI REST server with SQLite database
+frontend/     — SvelteKit dashboard (Svelte 5, Tailwind CSS v4)
+```
+
+## Quick Start
+
+```bash
+# Backend
+cd packages/server
+pip install -e .
+NOTIFY_BRIDGE_DATA_DIR=./test-data NOTIFY_BRIDGE_SECRET_KEY=your-secret-key-min-32chars \
+  python -m uvicorn notify_bridge_server.main:app --host 0.0.0.0 --port 8420
+
+# Frontend
+cd frontend
+npm install
+npm run dev
+```
+
+## Supported Providers
+
+- **Immich** — Photo/video server with album change detection