Publish first usable Windows release instructions and validation

tools/speech-eval/README.md

@@ -25,6 +25,13 @@ model load, not retained-session throughput. This deliberately simple experiment
 does not implement overlap/dedup or production budgets. Segment JSON offsets are
 already milliseconds and get the window offset added exactly once.
 
+Windows follow the probed primary audio stream's start/duration/index, with
+explicit absolute `-seek_timestamp 1` seeking and stream mapping. Missing audio
+stream duration is rejected with an actionable error. Container duration cannot
+silently extend a shorter audio stream. Resampling occurs before sample trimming;
+decoded frames must match the planned duration within at most one millisecond.
+Every actual frame count and full probe JSON is retained in the report.
+
 Each completed window writes an incomplete checkpoint; the final report marks
 complete evaluation, with `quality_failed` and explicit `validation_failures` for
 invalid ASR timestamps. Bounded raw ASR JSON remains in each checkpoint before
@@ -42,6 +49,8 @@ the existing eight frozen NASA intervals unchanged. Input has `fixture_sha256`,
 `asr_report_sha256`, `google_worker_sha256`, and `rankings` mapping query ids to
 ordered `{asset,start_ms,end_ms}` records. It reports top1 overlap and strict start
 point hits; it never chooses a segment by looking at the answer intervals.
+The ranking report must have `complete=true`, `quality_score_eligible=true` and
+no excluded windows; a reduced competitor pool cannot receive an accepted score.
 Hash fields must be checked against retained artifacts by the evaluator; they are
 provenance declarations, not a replacement for inspecting those artifacts.