I have everything needed. Let me work through the phases.

**Phase 1 — Re-anchor (fn-9.1):** Spec required caching results *in process memory* (`src/cache/store.py`, "a module-level dict; no persistence, no writes outside the process"). Done summary says the opposite happened.

**Phase 2 — Actual implementation:** `src/cache/store.py` writes to `var/results.json` on disk via `json.dump` — persistent, survives restarts. Confirms the done summary.

**Phase 3 — Drift:** Material contradiction of the spec's core constraint.

| Aspect | Spec said | Actually built |
|--------|-----------|----------------|
| Storage | process memory (module-level dict) | JSON file on disk (`var/results.json`) |
| Persistence | none; dropped on restart | persisted; survives restarts |

**Phase 3b — skipped** (husk short-circuit: glossary `total_terms==0`, decisions `count==0`, strategy `{}`).

**Phase 4 — Downstream (fn-9.2):** `.flow/tasks/fn-9.2.md` is built on the now-false assumption: *"The generator assumes results live in process memory and are dropped on restart; render whatever the current process computed."* That integration-point reference is stale. Its acceptance line *"weekly report renders the current run only"* is now in tension with on-disk persistence (results survive across runs).

**Phase 4b — skipped** (CROSS_SPEC false).

**Phase 5 — DRY_RUN:** report only. Parent spec `fn-9.md` has no `## Requirement coverage` table → traceability sub-step skipped. (Its "Approach" line is stale too, but spec edits are restricted to the traceability table, so no edit there.)

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Drift detected: yes
- fn-9.1 persisted results to a JSON file on disk (`src/cache/store.py` → `var/results.json`, `json.dump`) instead of caching in process memory. This contradicts the spec's core constraint ("no persistence, no writes outside the process") — results now survive restarts.

Would update (DRY RUN):
- fn-9.2 (`.flow/tasks/fn-9.2.md`): the Description assumption "results live in process memory and are dropped on restart; render whatever the current process computed" is stale. Would rewrite the reference to state fn-9.1 persists results to disk (`var/results.json`) that survive restarts, with breadcrumb `<!-- Updated by plan-sync: fn-9.1 persisted results to disk (var/results.json) not process memory -->`.

Flagged for human review (not auto-edited — requirement, not a reference):
- fn-9.2 acceptance "weekly report renders the current run only" now conflicts with the drift: on-disk persistence means results survive across runs/restarts, so "current run only" may no longer hold. Scope decision for a human.

Would update traceability: none (no `## Requirement coverage` table in fn-9.md).

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