feat: car-help web UI with browser view, search API, and buying guide

- FastAPI backend on port 8080 with noVNC proxy for same-origin iframe
- Split-panel UI: live browser (55%) + search/guide/saved tabs (45%)
- Car buying guide: target models, pre-purchase checklist, mechanics nearby,
  negotiation tips, budget breakdown
- Scoring/ranking engine for listings (Toyota Prius = highest)
- Docker container runs Xvfb + x11vnc + noVNC + FastAPI together
- Accessible at browser.ampbox.io via cloudflared tunnel

entrypoint.sh

@@ -1,27 +1,28 @@
 #!/bin/bash
 set -e
 
-# Start virtual display
 export DISPLAY=:99
 Xvfb :99 -screen 0 1280x720x24 -ac &
 sleep 1
 
-# Start VNC server on the virtual display (no password, listen on 5900)
-x11vnc -display :99 -forever -nopw -listen 0.0.0.0 -rfbport 5900 -shared &
+x11vnc -display :99 -forever -nopw -listen 0.0.0.0 -rfbport 5900 -shared 2>/dev/null &
 sleep 1
 
-# Start noVNC web proxy (serves browser view at http://localhost:6080/vnc.html)
 websockify --web=/usr/share/novnc/ 6080 localhost:5900 &
 sleep 1
 
+echo "noVNC ready on :6080"
+
+# Start FastAPI -- use uv run from /app
+cd /app
+uv run python -m uvicorn app:app --host 0.0.0.0 --port 8080 --log-level info &
+sleep 2
+
 echo "============================================="
-echo "  noVNC ready: http://localhost:6080/vnc.html"
+echo "  car-help UI: http://localhost:8080"
 echo "============================================="
 
-# Run whatever command was passed (or drop to shell)
 if [ $# -eq 0 ]; then
-    echo "No command given. Container is running -- attach to use."
-    echo "Run searches with: docker exec car-help uv run python search.py"
     tail -f /dev/null
 else
     exec "$@"