I have everything needed. Let me walk the phases to conclusion.

**Phase 3 — Drift analysis (completed task vs. its spec):**

| Aspect | fn-9.1 spec said | Actually built |
|--------|------------------|----------------|
| Location | move `src/util/` → `src/common/` | helpers at `src/common/strings.py`, `src/common/dates.py`; `src/util/` gone |
| Content | "mechanical move only, no content changes" | `slug(s)` / `today()` preserved verbatim |
| Names | (unchanged) | `slug`, `today` — no rename |

The completed task matched its spec **exactly**. The `src/util/ → src/common/` move is the *planned* behavior — the parent spec's Approach states it verbatim ("fn-9.1 moves the src/util/ helpers to src/common/ mechanically; fn-9.2 rewires the app imports"). No spec-vs-implementation divergence.

**Phase 3b — Husk short-circuit:** `GLOSSARY_JSON.total_terms == 0`, `DECISIONS_JSON.count == 0`, `STRATEGY_CONTENT == {}` → all three husk. Entire Phase 3b skipped.

**Phase 4 — Downstream (fn-9.2):** fn-9.2 references `src/util/`. But this is a pre-existing stale-by-authoring reference ("written before the consolidation landed"), not a reference invalidated by *drift* — the move was planned, and fn-9.2's own job is to rewire imports to the consolidated location (`src/common/`). No drift-induced staleness to sync.

**Phase 4b:** `CROSS_SPEC` false → skipped.
**Phase 5 traceability:** parent spec `fn-9.md` has no `## Requirement coverage` table → sub-step skipped.

---

Drift detected: no

- fn-9.1 implemented its spec exactly: helpers moved `src/util/` → `src/common/` (the *planned* restructure, per fn-9 Approach), mechanical move only, `slug()`/`today()` preserved with no rename. Implementation matches spec — no divergence.

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

Downstream review (fn-9.2):
- No updates warranted on drift grounds. fn-9.2's `src/util/` mention is a pre-move reference (self-noted as "written before the consolidation landed"), consistent with the planned move; fn-9.2's purpose is to rewire imports to `src/common/`. Not a drift signal — no stale reference introduced by fn-9.1's implementation.

Would update traceability: n/a — parent spec `fn-9.md` has no `## Requirement coverage` table.

No files modified (DRY_RUN, and no drift to sync).