Document installed Windows 0.1.5 and complete Google speech timing improvement

fixtures/music-validation-v1/README.md

@@ -138,3 +138,9 @@ frozen sample exposes a real regression and sensitivity to misleading metadata.
 No policy was retuned after seeing these scores. Production ANN/hybrid evidence,
 more representative music, human listening, missing-content calibration and
 source-specific confidence remain open. The experimental media rating is unchanged.
+
+Recorded manifests use their exact observed bytes. The initial Git commits
+normalized CRLF JSON while the local run retained CRLF; commit `512ec4e` preserves
+the unchanged observed JSON bytes with `-text` attributes. Git archive validation
+now matches all eight music/reranker frozen JSON inputs byte-for-byte. No source,
+label, policy or recorded output was altered to make a result pass.