v3.0.32

Fixes the launcher's startup splash never detecting a live server ("Server not responding" even though the server was actually up within seconds) - a real user hit this. Root cause: the splash's fetch() to /api/ping ran from an opaque-origin page and Chromium silently blocked it. Readiness is now checked from Python instead, before/while the window is open, and the window is driven to the real URL directly once confirmed.