Full d4 chat.json rewrite + d6 mirrors. Dropped stale turnIndex gates and broad shadow
matchers that no longer reflect LGP-canonical conveyance. Default-catchall now green via
page-level shadcn-catchall-renderer (not react-core-gated). 5 residual: chat-slots, hitl,
interrupt-headless, readonly-state.
Move monolithic d5-all.json + feature-parity.json + smoke.json into
per-integration directories under d4/<slug>/, d6/<slug>/, and shared/.
Every fixture file is now context-scoped to enable server-side aimock
routing via match.context. Migrated 12 HITL fixtures from main's
d5-all.json additions into shared/_migrated-from-d5-all-hitl.json
for follow-up distribution into per-integration files.
Jordan Ritter