diff --git a/docs/port/HANDOFF.md b/docs/port/HANDOFF.md
index 7526394b..a23c0ec6 100644
--- a/docs/port/HANDOFF.md
+++ b/docs/port/HANDOFF.md
@@ -2529,6 +2529,44 @@ whatever it returns — the same reason a truncated log and a t=0 render both lo
 fine from inside. Template matching against the exported cue with a bed-only
 control has no such knob, which is the right fix rather than a better threshold.
 
+## 🔴 2026-08-30 — you were right to refuse the weights. The DISC SIDE was wrong.
+
+**Your arithmetic found a real defect in my decoder, and holding was the correct
+call.** `resolve_movie_voice_region` starts **inside** the first stream.
+
+| | |
+|---|---|
+| `ctx0` declares | 632 packets = 1 294 336 B |
+| the resolver's leading chunk | 394 packets = 806 912 B |
+| **the region starts late by** | **238 packets = 487 424 B** |
+
+A whole number of packets — a start offset, not corruption. Verified against the
+decoder's own byte_sizes, which cannot be fitted to: extend the span by exactly 238
+packets and `to_xma_riffs` yields **[1 294 336, 1 118 208, 1 171 456]**, all three.
+At −300 the *previous* asset's chunks appear while those three stay stable, so −238
+is a real boundary.
+
+**Disc-wide: 24 / 24 single-chunk regions are fine; 8 of 10 three-chunk regions
+start mid-stream.** The defect is specific to the multichannel case.
+
+🔴 **So your leading chunk is a truncated first stream, not a spurious tail** — in
+`ADV` it is 62 % of ctx0. Any measurement you made *on* it was made on a fragment,
+including your r=0.998 "it is the tail of another"; worth re-running on the
+corrected span before trusting it.
+
+⚠️ **The resolver is NOT patched.** Why the predecessor cue's trailer lands 238
+packets into the next asset is unanswered, and a fix guessed from one movie would be
+worse than a documented defect. To extend a span yourself: start − 238×2048 for
+`ADV`; for the other seven the exact clip is **unknown** (my audit's number is an
+upper bound — it reports 243 for `ADV` where the truth is 238).
+
+✅ **The assignment below still stands**, because its ratio test was chosen to be
+immune to the clipping — but chunk 0's absolute level was measured over 62 % of its
+stream, so treat the 0.05 dB as luckier than it looks.
+[`voice-region-starts-late.md`](../re/structures/voice-region-starts-late.md) ·
+[evidence](../re/data/voice-region-start-clip.txt) ·
+[disc-wide](../re/data/voice-region-start-audit.txt)
+
 ## ✅ 2026-08-30 — ask #4 ANSWERED: ship the movie's own 5.1 track **and** the three streams
 
 **You need both.** `ADV.wmv` carries **one** audio stream and it is **WMA Pro 5.1**