Phase 0 canonical-home check cleared. All edited files live inside `next-chapter-os` (the only ACTIVE repo per `architecture.json` post-2026-05-04 consolidation). No protected-files entries matched the touched paths. No new canonical entity created; no `architecture.json` update required.
I came in expecting the prior session's "3 deleted files" claim to mean all sprawl was gone. Reality: 2 more orphan Exa clients still sat in `engine/lib/` and a byte-identical duplicate sat in `engine/contacts/`. My earlier audit (this same thread, prior turn) caught it. Lesson: trust the file listing, not the commit message.
Reverse drift pattern from 2026-05-08 (mono-repo consolidation incident): trusting documentation over reality. Today's analog was trusting the prior session's summary that 3 files were deleted — when in fact only the contacts copies were deleted and 2 more remained in `engine/lib/`. `find engine/lib -name "exa*"` took 200ms and revealed the truth.
None this run. Process held. Same-response rule for topology changes wasn't triggered (no GitHub-level changes). If next run is also infra cleanup with no topology change, that's a signal we should formalize "Phase 4 NOOP" rather than treating every cleanup as needing architecture.json reconciliation.
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