Wire chat.services.prompt.consume_pending_meanwhile_digests into
chat.web.turns.post_turn at the END of the handler, after scene-close
detection and before the response broadcast. Without this call digests
created by a meanwhile close stay pending forever — they surface in the
next you-turn's prompt (via T65) but are never marked consumed, so they
re-render on every subsequent turn.
Idempotent: re-calling the helper produces zero events when nothing's
pending. The T66 cross-feature note is updated to reflect the new
wiring; the existing direct-helper test in test_phase3_integration.py
is preserved as defensive coverage of the helper contract in isolation.
Joseph Doherty