LinYushen 5dad1f0915 fix(selfhost): clear hardcoded NEXT_PUBLIC_API_URL/WS_URL defaults (#1063) ...

The .env.example had hardcoded http://localhost:8080 defaults for
NEXT_PUBLIC_API_URL and NEXT_PUBLIC_WS_URL. When users copied .env.example
to .env and customized the backend port, the old defaults would still get
baked into the frontend at docker build time via NEXT_PUBLIC_WS_URL build
arg, causing API/WebSocket connection failures.

With empty defaults:
- Docker selfhost: frontend uses relative paths, Next.js rewrites proxy
  to backend internally — works regardless of external port config
- Local dev (make dev): Makefile sets these to localhost:$PORT automatically
- Browser fallback: deriveWsUrl() auto-derives WebSocket URL from page
  origin when NEXT_PUBLIC_WS_URL is empty

Closes #1055

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

2026-04-15 14:56:30 +08:00

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