Add built-in answer tones and automatic multiple-choice progression

docs/TESTING.md

@@ -1,4 +1,7 @@
-# Test results — 2026-11-09
+# Initial release test results — 2026-11-09
+
+For the current sound and automatic-feedback changes, see
+[FEEDBACK_TESTING.md](FEEDBACK_TESTING.md). The results below describe the initial release.
 
 Built and played with installed **VCC Plus 3.5.0, build 41**, bundled **CMOC 0.1.100**,
 and the exported **public STDIO MCP interface**. All gameplay ran in disposable
@@ -6,7 +9,7 @@ and the exported **public STDIO MCP interface**. All gameplay ran in disposable
 release fields between presses. No guest memory or registers were modified by
 a debugger. Personal emulator media and the original running machine were preserved.
 
-## Final source validation
+## Initial release validation
 
 | Check | Result |
 | --- | --- |
@@ -55,7 +58,7 @@ Full PNG captures and public receipts are in ignored `build/evidence/test/` and
 The typed report’s answer field records the initial test input when a spelling
 correction was subsequently made; the captured feedback and score verify the correction.
 
-## Release artifact
+## Initial release artifact
 
 - Build: `9922B526-537B-4820-BF6C-100EB8846077`
 - Artifact: `B6BCF288-91C9-43D8-A460-595792BFD457`