docs: record ADR-0024 completion, reconcile requirements.md + handoff-14

ADR-0024 audited as fully implemented. Amend the ADR with a "Phase F
minimal" implementation note (parser.rs retained as the router +
ParseError home) and update the README index line to match.

Reconcile docs/requirements.md against handoffs 10-14: refresh the
test baseline (449 -> 1006), mark U4 (replay) satisfied, correct the
A1 / H1a / H3 progress notes.

Amend handoff-14: §3 flagged items both resolved (ranker kept,
CommandNode.hint_mode removed); §4 rewritten as a concrete next-work
pointer at the reconciled requirements.md.

docs/handoff/20260515-handoff-14.md

@@ -6,8 +6,10 @@ deferred items. Eight focused commits, each a deliberate
 decision the user signed off on.
 
 **Headline: the handoff-12 §2 catalogue is now empty of
-actionable items.** What remains are two flagged observations
-(§3) the user should rule on, plus the standing ADR roadmap.
+actionable items, and ADR-0024 is confirmed fully
+implemented.** The two items §3 originally flagged are both
+resolved. The next session's work is the product roadmap in
+`docs/requirements.md` (reconciled this session) — see §4.
 
 ## State at handoff
 
@@ -138,45 +140,71 @@ long internal space runs in double-quoted (`"…"`) values — use
 a block scalar or keep runs short.** A catalog comment in
 `en-US.yaml` records this.
 
-## §3. CRITICAL: two flagged items needing a user decision
+## §3. Flagged items — both now resolved
 
-**3.1 The `Ranker` type is vestigial.** `completion::Ranker` /
+Both items this section originally flagged were ruled on by
+the user after the main work:
+
+**3.1 The `Ranker` type — KEEP.** `completion::Ranker` /
 `candidates_at_cursor_with` have no production caller passing a
-non-identity ranker. The user's stated ranker need (candidate
-ordering) is met by declaration-order preservation, not the
-ranker layer. So `Ranker`, `identity_ranker`, and the
-`candidates_at_cursor_with` variant are unused scaffolding. Per
-CLAUDE.md "don't remove without confirmation" they were left
-in. **Decide: remove them, or keep for a future frequency-
-ranking feature?** (handoff-12 §2.1 listed the ranker as
-"scaffolding-only … future work" — this is the same item, now
-confirmed genuinely unused.)
+non-identity ranker (the candidate-ordering need is met by
+declaration-order preservation). The user ruled: **keep it** —
+it is intentional scaffolding for future frequency / content-
+aware ranking (ADR-0024 §"out of scope" explicitly anticipates
+this). No longer an open question.
 
-**3.2 `CommandNode.hint_mode` is now genuinely dead.** The
-per-command `hint_mode: Option<HintMode>` field predates the
-node-attached HintMode work; HintMode is now per-*node*
-(`Node::Hinted`), never per-command. The field is still
-`#[allow(dead_code)]` and read by nothing. Removing it is a
-safe mechanical edit across the 20 `CommandNode` declarations.
-**Decide: remove it, or keep?** Not done this session (20-site
-edit, separate from the HintMode mechanism change).
+**3.2 `CommandNode.hint_mode` — REMOVED.** The per-command
+`hint_mode` field predated the node-attached HintMode work and
+was read by nothing. Removed (field + 20 `None` initialisers)
+in commit `6d2b929`.
 
-## §4. Open items — standing roadmap (unchanged)
+## §4. What's next — the standing roadmap
 
-handoff-12 §2's actionable backlog is cleared. What remains is
-the ADR roadmap in `CLAUDE.md` "Things deliberately deferred"
-(complex WHERE expressions, SQL advanced mode, indexes, m:n
-convenience, snapshot/replay/undo, tutorial system, etc.) and
-handoff-13's two accepted items:
+**handoff-12 §2's backlog is cleared, and ADR-0024 is
+confirmed fully implemented** (audited this session — Phases
+A–F done; Phase F shipped "minimal" with `parser.rs` retained
+as the router, now recorded in an ADR-0024 implementation
+note). There is no migration or carry-forward debt left.
+
+**The next session's work is the product roadmap, tracked in
+`docs/requirements.md`** — reconciled this session against
+what handoffs 10–14 actually built (test baseline refreshed to
+1006; `U4` replay marked satisfied; `A1` / `H1a` / `H3`
+progress notes corrected). `requirements.md` is now the
+trustworthy "what's open" tracker — read it, not the
+(coarser) `CLAUDE.md` "Things deliberately deferred" list.
+
+Notable open clusters in `requirements.md` (prioritisation is
+a **user product decision** — do not pick unilaterally):
+
+- **Indexes** (`C3` partial) — `add index` / `drop index`,
+  then `EXPLAIN QUERY PLAN` rendering (`QA1`). Self-contained.
+- **Complex WHERE expressions** (`C5a`, `[~]`) — AND/OR /
+  comparison / LIKE in UPDATE/DELETE/show-data filters. Needs
+  an ADR. The bridge from DSL toward real SQL.
+- **SQL in advanced mode** (`Q1`/`Q4`, `[~]`) — `sqlparser-rs`
+  + a defined subset. Needs an ADR.
+- **Snapshot / undo** (`U1`/`U2`) — designed in ADR-0006, not
+  built. (`replay`, `U4`, is now done.)
+- **m:n convenience** (`C4`), **modify relationship** (`C3a`,
+  `[~]`), **table rename** (`C1`).
+- **Friendly error layer** (`H1`) — partial; full SQL→English
+  translation pending. **Syntax-help in parse errors**
+  (`H1a`) — piecemeal so far.
+- **Session log + Markdown export** (`V4`, `[~]`),
+  **multi-line input** (`I1`), **readline shortcuts**
+  (`I1b`), **seeding** (`SD1`), **CI** (`TT5`),
+  **tutorial system** (`TU1`, `[~]`).
+
+Two handoff-13 items the user already **accepted** (not work,
+just recorded):
 
 - **Partial entry words classify as `DefiniteErrorAt`**
-  (handoff-13 §3) — the user accepted this; the matrix test
-  `app_commands::partial_entry_word_classifies_as_definite_error_but_completes`
-  documents it.
+  (handoff-13 §3) — documented by the matrix test
+  `app_commands::partial_entry_word_classifies_as_definite_error_but_completes`.
 - **Matrix scope** (handoff-13 §4) — cursor coverage is
   "meaningful transitions" not every byte offset; assertion (5)
-  is parse-layer not a live dispatch differential. User
-  accepted both.
+  is parse-layer, not a live dispatch differential.
 
 ## §5. Architectural delta (vs. handoff-13)
 
@@ -217,6 +245,17 @@ handoff-13's two accepted items:
   `help.intro` / `help.dsl_section` / `help.types_reference`,
   `help.{app,ddl,data}.*` (×20).
 
+### Post-handoff cleanup (this section's work)
+
+After the eight items above, three follow-ups landed:
+
+- `CommandNode.hint_mode` field removed (commit `6d2b929`) —
+  see §3.2.
+- ADR-0024 amended with a "Phase F minimal" implementation
+  note (`parser.rs` retained as the router); `docs/adr/README.md`
+  index line updated to match.
+- `docs/requirements.md` reconciled — see §4.
+
 ## §6. How to take over
 
 1. **Read this file, then handoff-13, then 12** for the chain.
@@ -224,12 +263,14 @@ handoff-13's two accepted items:
    escalated every ambiguous fork (HintMode mechanism, the
    `Box::leak` arena's true cost, the Form C restructure twice)
    rather than deciding unilaterally.
-3. **Run `cargo test`** — 1006 passing, 0 failing, 1 ignored.
-4. **Run `cargo clippy --all-targets -- -D warnings`** — clean.
-5. **Resolve §3** — the two flagged dead-code items — with the
-   user.
-6. Then the standing ADR roadmap (§4) is the next structural
-   work; pick per the user's priorities.
+3. **Read `docs/requirements.md`** — reconciled this session;
+   it is the authoritative "what's open" tracker (§4).
+4. **Run `cargo test`** — 1006 passing, 0 failing, 1 ignored.
+5. **Run `cargo clippy --all-targets -- -D warnings`** — clean.
+6. **Pick the next work from §4 / `requirements.md`** — but
+   prioritisation is a user product decision; ask, don't
+   assume. handoff-12's backlog and ADR-0024 are both fully
+   done — there is no carry-forward debt.
 
 ### Note on the typing-surface matrix