diff --git a/AGENTS.md b/AGENTS.md
index b91d288..6117d68 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -88,6 +88,10 @@ export ANDROID_SDK_ROOT=/home/dueattendant149/android-sdk
   - Material You 3 shape scheme (round cards 8-32dp)
   - Dynamic color (Android 12+ dynamicColorScheme + materialkolor seed)
   - BookshelfLibraryScreen + ServerSettingsScreen redesigned with round cards, CenterAlignedTopAppBar
-- Phase 4: features from Book's Story (audio/RSVP/search/TTS/cache) — pending
+- Phase 4: features from Book's Story (audio/RSVP/search/TTS/cache) — completed
+  - RSVP engine (RsvpEngine, RsvpTokenizer, RsvpToken, ReaderText)
+  - Audio player (AudioPlaybackService, ExoPlayer, MediaSession, PlaybackModule)
+  - TTS repository (RemoteTtsRepository + impl wrapping BookshelfApiRepository)
+  - Workers (no-op stubs for CacheDownload, ProgressSync, TtsDownload)
 - Phase 5: reader engine integration — pending
 - Phase 6: build, test, deploy — pending
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