Measure complete CPU gated transcription and component costs

docs/SPEECH-VAD.md

@@ -222,6 +222,32 @@ speech recall, transcript correctness, timestamp accuracy, retrieval improvement
 or a general music policy. No production gate was added and original Google
 audio retrieval remains unchanged.
 
+## Actual gated base transcription
+
+The pinned base ASR worker transcribed the twelve original contiguous speech
+intervals on CPU with one thread, unchanged auto-language decoding flags, and
+no integrated VAD concatenation. All five competitor rows remain present;
+four explicit no-speech rows launch no ASR. All timestamps and decoded coverage
+passed validation. Raw ASR, logs and embedded frozen VAD evidence are retained
+in `.searchi/speech/gated-base-results.json`, SHA-256
+`f2af1e650af697e4540cbc3e90c0035ff560cb675186f5dad9b2afff01e53a56`.
+Six harness tests and three timing-comparison tests passed.
+
+The sequential sum of decode plus ASR process times was 250,762.6 ms in the
+ungated baseline. Gated decode plus ASR **including the earlier VAD decode and
+process cost** totaled 64,912.2 ms. Probe/hash/checkpoint time is not included,
+these are separate runs, and this is not search latency or a general speedup.
+Speech alone became slower: ASR process time rose from 23,321.7 to 58,629.4 ms
+because twelve independent model starts replaced three. It yielded twenty
+segments versus nineteen; segment count does not prove transcript accuracy.
+Music/sound ASR text vanished through explicit no-speech decisions, not manual
+phrase filtering. Original Google audio retrieval remains independent.
+
+The next gate is genuine Google retrieval on all eight unchanged queries and
+independent speech recall/alignment assessment. Do not select a production
+policy from timing or this tiny corpus alone. A future persistent ASR session
+could reduce model-start overhead but must be measured independently.
+
 Open gates: actual one-thread audit, detection/recognition
 comparison, ordinary and DTW timestamp regression, independent held-out quality,
 background starvation/cancellation/crash recovery, packaging/license review,