diff --git a/AGENTS.md b/AGENTS.md
index 6117d68..600d948 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -93,5 +93,8 @@ export ANDROID_SDK_ROOT=/home/dueattendant149/android-sdk
   - 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
\ No newline at end of file
+- Phase 5: reader engine integration — completed
+  - Checkpoint model (serializable reading position)
+  - ChapterDrawer (ModalBottomSheet chapter list)
+  - Volume keys + chapter navigation already present
+- Phase 6: build, test, deploy — in progress
\ No newline at end of file