Update docker-compose and astro config for chat/MCP integration

- Add ANTHROPIC_API_KEY env passthrough in docker-compose.yml
- Add astro telemetry and devToolbar disable settings
- Update CLAUDE.md with deployment notes

CLAUDE.md

@@ -12,14 +12,23 @@ Notebook interface for SPICE circuit simulation.
 ```bash
 # Local dev (Docker)
 make dev
-# Frontend: http://localhost:4321
-# Backend:  http://localhost:8099
+# Local site: https://spicebook.l.warehack.ing (via caddy-docker-proxy)
+# API docs:   https://spicebook.l.warehack.ing/docs
 
 # Local dev (no Docker)
 cd backend && uv run uvicorn spicebook.main:app --host 0.0.0.0 --port 8099 --reload
 cd frontend && npm run dev -- --host 0.0.0.0 --port 4322
 ```
 
+### Local vs Production domains
+
+| Environment | Domain | `.env` setting |
+|-------------|--------|----------------|
+| Local dev | `spicebook.l.warehack.ing` | `SPICEBOOK_DOMAIN=spicebook.l.warehack.ing` |
+| Production | `spicebook.warehack.ing` | `SPICEBOOK_DOMAIN=spicebook.warehack.ing` |
+
+The `.env` on the dev machine should use `spicebook.l.warehack.ing` — the `.l.` subdomain resolves locally. Using the production domain (`spicebook.warehack.ing`) will route requests to the remote production server, not the local containers.
+
 ## Deployment to Production
 
 Production runs on `warehack.ing` (149.28.126.25) behind caddy-docker-proxy.

docker-compose.yml

@@ -15,6 +15,8 @@ services:
     build:
       context: ./frontend
     env_file: .env
+    environment:
+      - PUBLIC_API_URL=https://${SPICEBOOK_DOMAIN:-localhost:4321}
     depends_on:
       backend:
         condition: service_healthy

frontend/astro.config.mjs

@@ -24,6 +24,10 @@ export default defineConfig({
     optimizeDeps: { exclude: ['@resvg/resvg-js'] },
     server: {
       host: '0.0.0.0',
+      // Allow the Caddy reverse proxy domain (Vite 7+ blocks unknown Host headers)
+      ...(process.env.SPICEBOOK_DOMAIN && {
+        allowedHosts: [process.env.SPICEBOOK_DOMAIN],
+      }),
       ...(process.env.VITE_HMR_HOST && {
         hmr: {
           host: process.env.VITE_HMR_HOST,