plan: start 004-coalesce-stream-resolves-a92d40

plans/INDEX.md

@@ -11,7 +11,7 @@ green, app boots with no JS errors, P2P on by default, offline boot works).
 | 001 | 001-perf-timing-marks-105acc | Add startup, search and play timing marks plus yt-dlp duration logs | done | Add startup, search and play timing marks plus yt-dlp duration logs | baseline numbers for the rest |
 | 002 | 002-compress-and-etag-shell-bd459c | Serve the app shell gzip/brotli-compressed with ETags | done | Serve the app shell gzip/brotli-compressed with ETags | app.js 426 KB → 94 KB (br) |
 | 003 | 003-self-host-fonts-89466b | Self-host the three web fonts and drop the render-blocking Google Fonts CSS | done | Self-host the three web fonts and drop the render-blocking Google Fonts CSS | needs network once; CSP font-src fix |
-| 004 | 004-coalesce-stream-resolves-a92d40 | Coalesce concurrent resolveStreams calls for the same video | queued | | |
+| 004 | 004-coalesce-stream-resolves-a92d40 | Coalesce concurrent resolveStreams calls for the same video | in-progress |  |  |
 | 005 | 005-warm-streams-on-intent-47b3d3 | Warm the stream cache for likely next plays | queued | | cold play 7.5 s → cached 1.2 s |
 | 006 | 006-innertube-search-48066b | Answer searches from YouTube InnerTube directly with yt-dlp fallback | queued | | search 4–5 s → ~0.8 s |
 | 007 | 007-ytdlp-worker-045800 | Keep one long-lived yt-dlp worker process instead of spawning per call | queued | | ~1 s per yt-dlp call |