Freeze actual Google music metadata and precise speech timing diagnostics

tools/speech-eval/README.md

@@ -62,3 +62,30 @@ English recording do not validate German speech or general transcription quality
 
 Pinned CLI flag/output reference:
 [upstream cli.cpp](https://github.com/ggml-org/whisper.cpp/blob/d1be6fde11ac6e0407606b4e42fe72d34add8037/examples/cli/cli.cpp).
+
+## Frozen ordinary token-time comparison
+
+`token-policy.json` declares an internal base-only comparison before inference.
+Add `--token-sentences` to the existing command. The worker uses full JSON,
+ordinary token timestamps and unchanged recognition flags; DTW is disabled.
+The harness retains original raw JSON and segments, then adds exact recognized
+sentence substrings and their token intervals in `aligned_segments`. No label
+selects a sentence, source, word or start. All five sources and complete original
+window coverage remain mandatory; empty speech is valid.
+
+Structural tokens cannot become passage text. Ordinary text-token times must be
+present, ordered and inside the source segment/window; reconstructed token text
+must match original recognized bytes. Invalid alignment is retained as an error
+and invalidates an accepted score. No clipping, invented time or omitted failing
+competitor is permitted. Rankers must independently reconstruct these passages
+from raw JSON and verify policy/contract provenance before publishing quality.
+
+```powershell
+$env:SEARCHI_FORCE_CPU = '1'
+python tools/speech-eval/run.py --whisper .searchi/speech/build-cpu/bin/Release/whisper-cli.exe --whisper-sha256 12c681b4bcd9c7679b647b9a041e121a2f9e72cb2a9c6f189f529ec8b79c36f8 --ffmpeg .searchi/media-runtime/bin/ffmpeg.exe --ffprobe .searchi/media-runtime/bin/ffprobe.exe --model .searchi/speech/models/ggml-base.bin --candidate base --token-sentences --scratch-parent .searchi/speech/token-scratch --output .searchi/speech/base-token-sentences-v1.json
+```
+
+Run only with the coordinator's available CPU inference slot. The previous
+base-only run took about 251 seconds including decode/process startup. Token
+alignment has not yet been timed; each ASR process retains the 600-second limit.
+No production behavior or quality claim follows from structural tests.