homey/work-history/recent

2026-07-31 Fri

Restored EmulatorJS offline mode (previously removed because a cache-first Service Worker broke game loading). Rewrote modules/services/emulatorjs-server.py as a network-first PWA: SW only reads cache when offline, so it cannot break online play.
Added installable PWA (/manifest.json, stdlib-generated /icon-256.png), build-scoped emujs-shell-<BUILD_ID> cache with auto-invalidation on redeploy, and an opt-in per-game ⬇ download button caching ROMs into a persistent emujs-roms cache.
Kept IndexedDB offline save queue with sync-on-reconnect; player loads loader.js directly (removed the preflight gate).
Verified via module import + live HTTP smoke test (all routes 200; /sw.js has Service-Worker-Allowed: /).
Decided against Background Sync and timestamp-merge for saves (owner said not relevant). Decided against PS1/disc hosting for now (scoped it: needs psx core + BIOS + streamed ROM serving).
Recorded design in new org-roam subnode homey/emulatorjs.
Fixed offline "Error downloading core (mgba-legacy-wasm.data)": the SW isn't controlling the page on first visit, so the core fetched during first online play was never cached. Added page-side cacheLoadedStatic() that reads performance.getEntriesByType('resource') and writes the actually-loaded /static/ files into the shell cache directly (runs on game start + delayed + on reconnect). Download button now also caches the /play/<name> document.