Document soundbank findings

REPORT.md

@@ -21,6 +21,9 @@
   Contains a per-user installer (`Install.cmd`): install, upgrade and uninstall (Settings > Apps) verified.
 
 ## What is not verified / limitations
+- **Coverage**: only sounds in the WAD archives are listed and editable. About 15,800 short effects (footsteps,
+  foley, weapons, UI, grunts) are stored inside soundbanks (loose `.bnk` and banks embedded in `.upk`
+  packages) and are not covered yet (`docs/formats/banks.md`).
 - Speech lines being *heard* in the game needs gameplay; verified indirectly (same decoder/WAD path as the music
   test, byte-level apply/revert, boot test with modified speech WAD).
 - Speech/effects replacements must fit the original's size (index lives in compressed `.upk` packages).
@@ -29,5 +32,7 @@
 - Character labels outside the user's lists are inferred from names (marked as such), not verified speakers.
 
 ## Next steps
-1. Extend the curated speaker lists (`data/catalog/source/<lang>/*.txt`) and rebuild with `tools/build_catalog.py`.
-2. Optional: rewrite the BKPK indexes inside `.upk` packages (LZO) to lift the size limit for speech.
+1. Support the in-memory sounds in soundbanks: the loose footstep banks first, then the banks embedded in
+   `.upk` packages (`docs/formats/banks.md`).
+2. Extend the curated speaker lists (`data/catalog/source/<lang>/*.txt`) and rebuild with `tools/build_catalog.py`.
+3. Optional: rewrite the BKPK indexes inside `.upk` packages (LZO) to lift the size limit for speech.