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>

packages/server/src/notify_bridge_server/config.py

@@ -0,0 +1,12 @@
+"""Server configuration — settings, data directory, secrets."""
+
+import os
+from pathlib import Path
+
+
+DATA_DIR = Path(os.environ.get("NOTIFY_BRIDGE_DATA_DIR", "./data"))
+SECRET_KEY = os.environ.get("NOTIFY_BRIDGE_SECRET_KEY", "")
+DATABASE_URL = os.environ.get(
+    "NOTIFY_BRIDGE_DATABASE_URL",
+    f"sqlite+aiosqlite:///{DATA_DIR / 'notify_bridge.db'}",
+)