Preview

When the user invokes /preview, start the Next.js dev server so they can preview the site locally.

Steps

1. •Check if a Next.js dev server is already running by checking for processes listening on port 3000 (lsof -i :3000)
2. •If a server is already running:
   • •Verify it's healthy by curling http://localhost:3000
   • •If healthy, tell the user the server is already running and they can preview at http://localhost:3000
   • •If not healthy, kill the process and continue to step 3
3. •Check for corrupted .next cache that could cause issues:
   • •If .next directory exists and seems corrupted (e.g., previous server crashed), remove it with rm -rf .next
4. •Start the dev server with npm run dev in the background
5. •Wait a few seconds, then verify the server started successfully by curling http://localhost:3000
6. •Tell the user they can preview the site at http://localhost:3000

Rules

• •The dev server runs on port 3000 by default
• •If port 3000 is occupied by a non-Next process, inform the user and suggest they free the port
• •Always run the dev server in the background so the conversation can continue
• •If npm run dev fails, try cleaning .next and node_modules/.cache then retry once
• •Always end by telling the user the preview URL: http://localhost:3000