Subtitles and menu text sections in the editor

NOTES.md

@@ -32,7 +32,10 @@
      events); menu text = Localization/<LANG>/*.int (`ackit/loctext.py`, ~7,000 strings/language).
      `Workspace.texts` (ackit/texts.py): states, apply/revert, conflicts, mod packages; CLI `ackit text`.
      Subtitles in place (NUL-padded, limit = original length); decision + reasons in decisions.md 4c.
-  5. [ ] Editor: Subtitles section linked to audio, separate Menu text section, revert, mod export/import.
+  5. [x] Editor: tabs Sounds / Subtitles / Menu text (app/textpanel.py: search, filters, edit with room
+     counter, apply/revert/revert all, find & replace on the filtered rows, go to sound); the sound editor
+     shows and edits the sound's subtitle (SubtitleBox); texts in mod export/import and the changed-outside
+     banner; smoke test loads texts. 15 GUI tests.
   6. [ ] Final e2e (audio + text), packaged build, REPORT.md.
 - OPEN: channel order for >2 channels unverified; speech and in-memory sounds *heard* in-game (need gameplay;
   posted keys do not drive the menu).