Verification complete. Both active decisions read; neither is contradicted by `.3`'s mechanical token-plumbing. The tracker-sync change (`body-merge.md:274` now passes `--flow-file ".flow/specs/${SPEC_ID}.md"`) is fully consistent with the "projection, not coordination" decision — it strengthens spec-as-source-of-truth rather than contradicting it. The Droid decision's files (`.factory-plugin` fallback, hook matchers, plugin-root preludes) weren't touched by `.3`.

Here is my Phase 6 summary.

---

Drift detected: no

**Phase 1–4 — completed task `fn-81…single.3` vs downstream `fn-81…single.4`**

`.3` did mechanical round-trip eliminations on canonical skill markdown (plan, deps, make-pr, tracker-sync, work, resolve-pr, prime). Its done-summary claims were verified against the actual tree:

- Fixed-path sweep (R13): `grep` for all 9 paths (`/tmp/{spec,acc,desc,review-prompt,re-review,updated-plan,export-prompt,completion-review-prompt,merged-flow}.md`) across `skills/` → **zero hits**. Clean.
- `config get tracker.perEvent` (R7): every hit uses the canonical `LEAF=$(...)` single-fetch shape (plan Step 6.5, work ×3, resolve-pr, interview, capture). No double-get remains.
- tracker-sync (R3): `body-merge.md:274` passes `set-merge-base --flow-file ".flow/specs/${SPEC_ID}.md"`; no `/tmp/merged-flow.md` re-emission. Matches spec.
- No variable/function/API renames — `.3` landed as specified.

`fn-81.4` is a pure validation/staging gate (mirror regen + commit, tests/smoke, cross-task greps, CHANGELOG `## Unreleased`, optimization-log row). It references **no identifier `.3` created or renamed**; it grep-verifies *absence* of the paths/placeholders `.3` removed. Its concrete assumptions all still hold:
- Fixed-path + `[PASTE` grep lists → confirmed empty (the exact result `.4` expects).
- CHANGELOG "newest is `## [flow-next 2.5.4]`, `## Unreleased` absent" → confirmed verbatim.
- "tasks 1–3 canonical-only, mirror committed once in `.4`" → `.3` done-summary + evidence confirm mirror regen deferred.

The two tasks are decoupled by design; nothing in `.4`'s spec text is stale.

**Phase 3b — project-anchor signals**
- 3b.1 glossary renames: 38 terms, but every entry's `avoid` array is empty → no aliases to detect. Nothing.
- 3b.2 decision overrides: 2 active decisions read; `.3`'s token-plumbing contradicts neither (tracker-sync change is consistent with "projection, not coordination"; Droid decision's files untouched). Nothing flagged.
- 3b.3 strategy drift: `.3` aligns with the Ralph-autonomous / Cross-platform-parity / Self-improving tracks; adds no SaaS/hosted endpoint/dependency; no track-rename in spec bodies. Nothing flagged.

**Traceability:** parent spec has a `## Requirement coverage` table, but `.3` did not change which tasks cover which R-IDs (R3–R7/R12 → fn-81.3; R13 shared across .1/.2/.3/.4 as the table already shows). No table rows affected.

Would update (DRY RUN): none.
No files modified.