Minor updates to overlap detection and segment coalescing logic

architecture.md

@@ -357,7 +357,7 @@ Initial classifications may include:
 - `backchannel`
 - `crosstalk`
 
-The `resolve-overlaps` module uses preserved word-level timing to replace detected overlap-group segments with smaller word-run segments when usable timing is available. Groups without usable word timing remain unresolved for later passes or human review.
+The `resolve-overlaps` module uses preserved word-level timing to replace detected overlap-group segments with smaller word-run segments when usable timing is available. Resolution expands each overlap window by the configured coalesce gap so nearby same-speaker context can be absorbed into the replacement runs. Groups without usable word timing remain unresolved for later passes or human review.
 
 Overlap resolution should be non-destructive. Original segment text, timing, and source metadata must remain recoverable.