Salvaged from PR #73982 by Alexander Russell (@AlexxRussell) — the
collector half only. _collect_history_media_paths used only
_TOOL_MEDIA_RE, which misses quoted and spaced paths that the delivery
pipeline's extract_media grammar accepts; run text content through the
same extractor so the surviving dedup consumers (auto-append lane and
bare-path filter) see every path that could actually have been
delivered.
The PR's other halves (post-stream dedup snapshot plumbing, canonical
path comparison in _deliver_media_from_response, queued-followup
snapshot union) are moot after #74495 removed the post-stream history
filter entirely.
Alexander Russell
cea4c3362d