Brummel
3d42d1da82
heal_orphans_if_idle called regenerate_missing_oneliners_for_user inline on the request task, blocking the browser for up to N×60s when orphans existed (observed with 16 cases after manual cleanup). Now: CAS on new OnelinerHealBusy flag + tokio::spawn + BusyGuard reset-on-drop. Handler returns immediately; the existing OnelinerUpdated SSE event delivers results via the usual reload. Startup recovery shares the flag so a concurrent page-load during boot cannot fire a parallel regen loop against Ollama. Regression test uses wiremock + timeout(150ms) + .expect(5) to verify both non-blocking return and dedup of parallel invocations.