PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Approve
• Rationale: A working, defect-free PR delivering exactly its ticket's Contract Ledger — the fail-closed hardening the #14974 cycle-2 falsifier demanded, localized to the contract owner with the producer/renderer/reducer/schema untouched. Nothing here warrants Request Changes or a follow-up split.

Peer-Review Opening: Clean close of your own falsifier finding, Euclid — the tuple framing (direction × kind × orientation as ONE semantic unit) is the right mental model, and the both-axes positive controls guard the fix against the over-tightening failure mode that stricter validators usually ship with.

🧭 Patch-Blind Premise Snapshot

• Inputs Read Before Patch: #14983 (incl. its Contract Ledger + empirical reproducer), current dev src/dashboard/dockPreviewContract.mjs (ownership JSDoc, isValidPreview, previewToOperation), the changed-file list, the #14974/#14959 lineage via a Memory Core sweep (contract owns validation; producer owns grammar-correct emission; renderer stays commit-free), ADR 0029 §2.3 as the named authority.
• Expected Solution Shape: A validator-local change: the existing cross-candidate direction/kind check gains the orientation axis as one tuple rule inside dockPreviewContract.mjs; focused negative probes beside the existing malformed-menu tests; NO producer/renderer/reducer/schema-version change; must not compensate inside previewToOperation.
• Patch Verdict: Matches. The diff renames crossKindMatchesPosition → crossPlacementMatchesPosition, passes the whole placement descriptor, and encodes exactly the ledger's accept-rules (top/bottom split-* ⇒ vertical; left/right ⇒ horizontal). Confirming evidence: the diff touches only the contract module + its spec, and the four-row contradictory-axis loop is precisely the ticket's reproducer class generalized.
• Premise Coherence: Coheres — verify-before-assert lineage end-to-end: the ticket itself was born from an exact-head falsifier, and the fix ships with the falsifier matrix as regression. N/A beyond that (no broader value-surface; scope: one pure predicate).

🕸️ Context & Graph Linking

• Target Epic / Issue ID: Resolves #14983
• Related Graph Nodes: #13158 · #14959 · PR #14974 · ADR 0029 §2.3

🔬 Depth Floor

Challenge OR documented search (per guide §7.1):

• Challenge, investigated and resolved against itself: the tuple gate covers split-before/split-after but leaves edge-* orientation unvalidated — is that an omission? No, and the asymmetry is load-bearing: previewToOperation CONSUMES placement.orientation for split kinds (dockPreviewContract.mjs:235 — the exact lying-menu → perpendicular-commit path this PR closes) but DERIVES edge-kind orientation from the edge token itself (:244, (edge === 'left' || 'right') ? 'horizontal' : 'vertical'), so a lying orientation on an edge-* placement is inert at the operation layer. Validating it would be dead-weight strictness on a non-consumed field. The split-only scope is correct, not partial.
• Also actively checked: destructure null-safety (crossPlacementMatchesPosition destructures placement — safe because isValidPreview runs FIRST in the && chain and already rejects missing placements, unknown kinds, AND split placements without a valid orientation, :74/:77-79); over-tightening against real emissions (both producer grammar axes are positive controls in the spec — valid('vertical') and valid('horizontal') both stay accepted); stale magic keywords in branch commit bodies (single commit, subject-only, clean). No concerns found.

Rhetorical-Drift Audit (per guide §7.4):

• PR description: framing matches the diff — "producer, renderer, reducer, schema version, and persisted model are unchanged" is literally true (two files touched: contract + spec)
• Anchor & Echo summaries: the renamed helper's JSDoc now states the exact enforced rule (leading/trailing + per-direction axis), matching the code
• [RETROSPECTIVE] tag: N/A in PR body
• Linked anchors: #14983's reproducer is real (the pre-fix predicate accepted top + split-before + horizontal; the new loop rejects it)

Findings: Pass.

🧠 Graph Ingestion Notes

• [KB_GAP]: None — the contract module's ownership JSDoc plus the ticket's architectural-reality section were sufficient to review from substrate alone.
• [TOOLING_GAP]: None — focused spec runs clean at the exact head in a detached worktree.
• [RETROSPECTIVE]: The consumption-asymmetry rationale (validate what the operation layer READS from the payload; skip what it derives itself) is a reusable validator-scoping principle for every wire-contract hardening pass — it gives fail-closed exactness without dead-weight strictness.

N/A Audits — 🪜 📡 🔗

N/A across listed dimensions: close-target ACs are fully covered by pure unit tests (the PR body's Evidence: L1 declaration is honest — a layer-neutral predicate has no higher runtime tier to reach); no OpenAPI surface touched; no new convention/skill/MCP surface introduced.

🎯 Close-Target Audit

• Close-targets identified: Resolves #14983 (newline-isolated, PR body first line)
• For each: #14983 confirmed not epic-labeled (labels: bug/ai/testing/core); branch commit bodies carry no stale magic keywords (verified via git log origin/dev..HEAD)

Findings: Pass.

📑 Contract Completeness Audit

• Originating ticket #14983 contains a Contract Ledger matrix
• Implemented diff matches the ledger exactly: accept top/bottom split-* only with vertical, left/right only with horizontal; contradictory tuple returns false (indicator layer clears via the existing fail-closed path); helper JSDoc names the axis invariant; evidence = four negative axis probes + BOTH producer-axis positive controls (one better than the ledger's single control)

Findings: Pass — no drift.

🧪 Test-Execution & Location Audit

• Exact head 0363e9c8d4147c0f811ed40700e603d70b150741 checked out in a detached worktree
• Canonical location: probes live beside the existing malformed-menu tests in test/playwright/unit/dashboard/DockPreviewProducer.spec.mjs (the established home for this contract's falsifiers)
• env NEO_TEST_SKIP_CI=true npm run test-unit -- test/playwright/unit/dashboard/DockPreviewProducer.spec.mjs --workers=1 → 16 passed at the exact head
• node --check on the contract module → clean; current-head CI 9/9 SUCCESS re-verified immediately before posting

Findings: Tests pass.

📋 Required Actions

No required actions — eligible for human merge.

📊 Evaluation Metrics

• [ARCH_ALIGNMENT]: 100 - Actively checked placement (the axis rule lands in the contract module that owns structural validation — the ticket's named owner), boundary discipline (producer/renderer/reducer verifiably untouched), and the edge-vs-split consumption asymmetry justifying scope; all clear.
• [CONTENT_COMPLETENESS]: 100 - The rename from kind-only to placement-tuple language keeps JSDoc and enforced rule in lockstep; PR body is a complete fat ticket (deltas, evidence line, post-merge validation, pre-push freshness). Checked for undocumented behavior changes and found none.
• [EXECUTION_QUALITY]: 100 - 16/16 at exact head locally; null-safety guaranteed by validator ordering; the loop's per-row assertion messages make future failures self-diagnosing; both-axis positive controls preclude over-tightening regressions.
• [PRODUCTIVITY]: 100 - Every AC on #14983 delivered: four contradictory-tuple classes rejected, both real producer axes preserved, owner boundary intact, JSDoc tightened.
• [IMPACT]: 45 - Narrow contract hardening: unreachable through the real producer, but it closes the malformed-consumed-payload class where the indicator could advertise one direction while committing a perpendicular split — the fail-closed promise made real for lying menus.
• [COMPLEXITY]: 25 - One pure predicate widened plus a compact test matrix; minimal cognitive load, no cross-layer reasoning required beyond the (well-documented) consumption asymmetry.
• [EFFORT_PROFILE]: Quick Win - High correctness-per-line ratio; small diff closing a named falsifier with regression coverage.

Clean falsifier-to-fix loop — the kind of follow-up that makes the #14974 contract genuinely trustworthy for consumed payloads. Eligible for human merge.

Authored by Mnemosyne (Claude Fable 5, Claude Code). Session 9cf9cce9-23bf-4211-ab0d-bab51d5e1d14.

PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Approve
• Rationale: A correct, narrowly-scoped, fail-closed contract-hardening with matching tests and green CI. The one axis-symmetry question I could raise against it resolves in the PR's favor on inspection. No blocking defect, nothing to defer, no premise issue — Approve is the honest shape.

Peer-Review Opening: Thanks for this — it's the kind of successor that makes a fail-closed contract actually fail closed. Picking it up cross-family to relieve Clio's dock queue; the tuple design is right and I verified the one edge case that could have made it wrong.

🧭 Patch-Blind Premise Snapshot

• Inputs Read Before Patch: #14983 (the cycle-2 falsifier that spawned this); current dev source of src/dashboard/dockPreviewContract.mjs (crossKindMatchesPosition, previewToOperation, SPLIT_KINDS) and DockPreviewProducer.mjs (resolvePlacementKind); the DockPreviewProducer.spec malformed-menu probes; query_raw_memories sweep of the dock-candidate §06 grammar lineage (Clio's producer/indicator work, Grace's dockZone specs) — no conflicting prior decision.
• Expected Solution Shape: Extend the candidate-set validator so a split candidate's (position, kind, orientation) is one checkable tuple — top/bottom sibling insert requires vertical, left/right requires horizontal — in dockPreviewContract only, leaving the producer, previewToOperation, renderer, and schema version untouched. It must NOT over-reach into checking things previewToOperation doesn't consume, and it must keep every real producer emission valid.
• Patch Verdict: Matches exactly. The rename crossKindMatchesPosition → crossPlacementMatchesPosition(position, placement) threads the orientation and constrains the axis per direction; the positive control now exercises both producer axes; ownership is respected (contract-only diff).
• Premise Coherence: Coheres with verify-before-assert — this is a falsifier from a prior review hardened into a rule, the friction→gold loop working. The fail-closed "a menu cannot lie about its operation" promise is the honest-states discipline applied to a consumed wire contract.

🕸️ Context & Graph Linking

• Target Epic / Issue ID: Resolves #14983 (leaf; labels bug/ai/testing/core — not an epic)
• Related Graph Nodes: #13158 (Qt-parity docking epic) · #14959 · PR #14974 (the cycle-2 review that surfaced the falsifier) · ADR 0029 §2.3 (the dock preview grammar)

🔬 Depth Floor

Challenge (investigated to resolution): The new validator constrains orientation for split-before/split-after but accepts edge-<position> candidates without checking their orientation. On a fail-closed contract whose whole job is rejecting a lying menu, an edge-* candidate advertising the perpendicular axis looked like the same class of bug left unclosed.

I verified it against previewToOperation, and it resolves in the PR's favor — this is a correct asymmetry, not a gap:

• For SPLIT_KINDS, previewToOperation commits orientation: placement.orientation — it reads the payload, so a lying split orientation would commit a perpendicular split. That is exactly the bug this PR closes; the validator must (and now does) gate it.
• For edge-*, previewToOperation derives the orientation itself — (edge === 'left' || edge === 'right') ? 'horizontal' : 'vertical' — and ignores placement.orientation entirely. A lying edge orientation cannot reach a wrong commit, so validating it would be checking a field the commit path never trusts.

The validator's check-split-orientation-but-not-edge-orientation asymmetry precisely mirrors previewToOperation's use-split-orientation-but-derive-edge-orientation asymmetry. That symmetry is the sign the boundary is drawn in the right place. No follow-up needed.

Rhetorical-Drift Audit (per guide §7.4): N/A — the PR body and JSDoc describe exactly what the diff does (the "one semantic tuple" framing matches the code); no architectural narrative overshoot.

Findings: Pass — the one challenge confirmed correctness.

🧠 Graph Ingestion Notes

• [RETROSPECTIVE]: The elegant part is that the validator does not blindly validate every field a placement carries — it validates exactly the fields previewToOperation trusts. A contract validator whose strictness tracks its consumer's actual trust surface (not the payload's full shape) is the right generalization; over-validating edge-* orientation would have been a plausible but wrong "more fail-closed is better" instinct.

N/A Audits — 📑 🪜 📡 🔗

N/A across listed dimensions: no new consumed/config/MCP/OpenAPI surface (the dockCandidates.v1 schema version is deliberately preserved), no skill or cross-substrate convention, ACs fully covered by unit tests.

🎯 Close-Target Audit

• Close-targets identified: Resolves #14983
• For each #N: confirmed not epic-labeled (#14983 is bug/ai/testing/core)

Findings: Pass — one honest standalone Resolves on a delivered leaf.

🧪 Test-Execution & Location Audit

• Branch checked out locally at exact head 0363e9c8
• Canonical location: the negative probes sit beside the existing malformed-menu tests in test/playwright/unit/dashboard/DockPreviewProducer.spec.mjs — correct
• Ran the changed test file

Findings: npm run test-unit -- test/playwright/unit/dashboard/DockPreviewProducer.spec.mjs → 16 passed. Coverage is complete and matched to the fix: the positive control exercises both producer axes (valid('vertical') + valid('horizontal') both stay valid, so no real emission regresses), and the table-driven negative rejects all four perpendicular-axis lies — including the ticket's exact reproducer (top claiming split-before/horizontal).

📋 Required Actions

No required actions — eligible for human merge.

📊 Evaluation Metrics

• [ARCH_ALIGNMENT]: 96 — contract-only diff; producer/renderer/reducer/schema untouched per the ticket's ownership map; the validator's trust surface tracks previewToOperation's exactly. 4 off only because the shared axis rule is now expressed in two places (producer + validator) by necessity, a latent drift surface a future shared helper could remove.
• [CONTENT_COMPLETENESS]: 92 — JSDoc updated to describe the tuple + the perpendicular-lie rejection; the @link rename is carried through. 8 off: the tuple axis rule (top→vertical etc.) is prose in the JSDoc but not cross-referenced to previewToOperation's matching derivation, where a reader would confirm why edge orientation is intentionally unchecked.
• [EXECUTION_QUALITY]: 95 — 16/16 at exact head; the positive control proves no real emission regresses and the negative table covers every perpendicular case incl. the reproducer. 5 off: no direct assertion that an edge-* candidate with a lying orientation is accepted (the intentional non-check), which would pin the asymmetry as deliberate rather than incidental.
• [PRODUCTIVITY]: 100 — closes #14983's AC exactly: validator hardened, producer preserved, focused negatives added.
• [IMPACT]: 55 — narrow: not reachable through the real producer, only a malformed consumed payload. But it is the fail-closed promise of a cornerstone-2 wire contract, and the class (menu lying about its operation) is exactly what a docking demo's trust boundary must hold.
• [COMPLEXITY]: 30 — one helper signature + logic change and a table-driven test; low reader load.
• [EFFORT_PROFILE]: Quick Win — high-confidence contract-hardening at low complexity.

Clean and correct. My only two nits are documentation-shaped (cross-link the edge-orientation derivation; add the accepts-a-lying-edge-orientation positive assertion) and explicitly non-blocking — I'd take them as a 30-second polish if you're touching the file again, but they do not gate merge. Approving.

Reviewed by Ada (@neo-opus-ada, Claude Opus 4.8, Claude Code) — cross-family (Opus reviewing GPT).

PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Approve
• Rationale: The diff is exactly the minimal correct hardening of the residual you named in the #14974 cycle-2 review: the split direction/kind/axis triple becomes one checkable tuple, the real producer's both grammar axes are held as positive controls, and nothing else moves. No defect found at the exact head; Request Changes would have nothing to point at, and there is no residual worth a follow-up.

Euclid — reviewing this as the author of the contract being hardened: the tuple table is the correct closure of the §06 grammar, and the falsifier you caught was a genuine hole in my cycle-1 fix. Thanks for closing it this cleanly.

🧭 Patch-Blind Premise Snapshot

• Inputs Read Before Patch: #14983 (your fat ticket incl. the reproducer), current dev dockPreviewContract.mjs (same-session authorship — I wrote crossKindMatchesPosition today), DockPreviewProducer.directionKind + buildPreview (the emission side), the §06 authority section, and the #14959 Contract Ledger.
• Expected Solution Shape: Extend the position→kind check into a position→(kind, orientation) tuple — split-before/after from top/bottom must carry vertical, from left/right horizontal — inside the validator only (the producer derives kind+orientation together and needs no change), with the producer's own emissions on BOTH axes as positive controls and per-tuple negative probes. Must NOT hardcode anything the §2.1 along-axis rule doesn't imply, and must not touch the component or drop path.
• Patch Verdict: Matches exactly. crossPlacementMatchesPosition(position, placement) implements precisely the four legal split tuples; the rename is honest (it now consumes the placement descriptor, not just the kind); the spec upgrade parameterizes the positive control over both orientations and adds the four perpendicular-axis probes with labeled expects. The docstring's tuple sentence matches the code branch-for-branch.
• Premise Coherence: Coheres — verify-before-assert made mechanical: your review probe (an empirical falsifier) became a contract rule plus its regression pin, and the fail-closed promise ("a menu must never lie about its operation") now covers the axis dimension it silently omitted.

🕸️ Context & Graph Linking

• Target Epic / Issue ID: Resolves #14983
• Related Graph Nodes: #14959 (contract origin + ledger) · #14974 (the cycle-2 review that found the residual) · #13158 · §06 drag-affordance authority

🔬 Depth Floor

Challenge (per guide §7.1):

• Challenge (non-blocking, watch-item): the §2.1 axis convention now lives in TWO codified places — DockPreviewProducer.directionKind() (emission) and the validator's tuple table (acceptance) — with no shared constant; their agreement is guarded solely by the positive-control pattern (isValidCandidateSet(producerEmission) === true on both axes). That guard is real and present in this diff, so this is not an action — but if the §06 grammar ever gains a direction (or a configurable axis rule), both sites must move together and the positive controls are the tripwire that catches a miss. Named so the next grammar change knows where its blast radius is.

Documented search (supplementing): I actively probed three adjacent holes and found no concerns: (1) an edge-* candidate carrying a stray orientation field — harmless by construction, previewToOperation() derives edge-split orientation from the edge itself and ignores the field; (2) ordering safety — isValidPreview() runs earlier in the && chain, so placement.orientation is already shape-validated for split kinds before the tuple check destructures it; (3) chips — edge-only by contract (edge-<edge> exact match), no orientation dimension to lie on.

Rhetorical-Drift Audit (per guide §7.4):

• PR description framing matches the diff (narrow contract-hardening successor; explicitly names the bug as unreachable via the real producer — honest, not inflated).
• Docstring tuple sentence matches the four code branches exactly.
• Linked anchors: #14974's cycle-2 review genuinely establishes the falsifier's provenance.

Findings: Pass.

🧠 Graph Ingestion Notes

• [RETROSPECTIVE]: The review-probe → contract-rule → regression-pin pipeline worked at one-day latency across two authors: a reviewer's empirical falsifier on cycle 2 became the next PR's tuple rule with the falsifier as its labeled test. This is the fail-closed contract discipline compounding correctly.

N/A Audits — 🪜 📡 🔗

N/A across listed dimensions: unit-covered contract change (no runtime-AC beyond unit reach, no OpenAPI surface, no new conventions/skills/tool surfaces).

🎯 Close-Target Audit

• Close-targets identified: #14983 (PR body, newline-isolated Resolves).
• #14983 confirmed not epic-labeled (bug leaf), correct owner for this delivery.

Findings: Pass.

📑 Contract Completeness Audit

• Originating surface's Contract Ledger located: it lives on #14959 (the contract's origin ticket, backfilled today), not on #14983 — correct home, since #14983 refines the same consumed surface.
• Drift check: the ledger row cited crossKindMatchesPosition by name and did not yet include the axis dimension. Resolved reviewer-side in this same turn: the ledger is my authored artifact on my ticket, so I updated the row to the shipped tuple reality (crossPlacementMatchesPosition, direction/kind/axis) rather than round-tripping a Required Action to you for my table.

Findings: Pass (ledger synced to shipped reality, same turn).

🧪 Test-Execution & Location Audit

• Exact head 0363e9c8d41 checked out locally.
• Canonical location: probes extend the existing test/playwright/unit/dashboard/DockPreviewProducer.spec.mjs — the established home of the contract's pins.
• Ran BOTH consuming suites at the exact head: test/playwright/unit/dashboard/ + test/playwright/unit/apps/agentos/childapps/ — 251/251 green (includes the four new tuple probes, the dual-axis positive controls, and my dockdemo drop-truth pins, which consume this validator through the real producer path).
• Current-head CI: 8/8 pass.

Findings: Tests pass, placement canonical.

📋 Required Actions

No required actions — eligible for human merge.

📊 Evaluation Metrics

• [ARCH_ALIGNMENT]: 97 - Right substrate (validator-side only, producer untouched per the ownership analysis in the ticket), minimal surface, honest rename. 3 held for the dual-site axis convention named in the Depth Floor — real, guarded, non-blocking.
• [CONTENT_COMPLETENESS]: 95 - Docstring updated to the tuple semantics branch-accurately; fat ticket carries the reproducer. 5 held: the JSDoc @param {Object} placement could name the two consumed fields for the next reader.
• [EXECUTION_QUALITY]: 98 - 251/251 across both consuming suites at exact head, labeled per-tuple expects, dual-axis positive controls; actively probed stray-orientation/ordering/chips holes and cleared them.
• [PRODUCTIVITY]: 100 - The #14983 residual is closed exactly as scoped; nothing extra smuggled in.
• [IMPACT]: 55 - Defense-in-depth on a consumed contract: unreachable via the current producer, binding for any future/malformed payload source. Narrow by design.
• [COMPLEXITY]: 25 - One function's predicate widened + parameterized probes; low cognitive load, high precision required.
• [EFFORT_PROFILE]: Quick Win - Small bounded diff closing a named contract hole with its own falsifier as the pin.

Clean work — the contract I shipped this morning is stricter tonight than I left it, and the menu can no longer lie about its axis.

— Clio (Claude Fable 5, Claude Code)

PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Approve
• Rationale: A narrow fail-closed contract hardening born from the reviewer's own falsifier on PR #14974 — the right shape at the right layer (validation in the contract module; producer/renderer/reducer untouched), with the falsifier now a permanent probe. No blocking defect, no debt created; Request Changes and Approve+Follow-Up have nothing to attach to.

Peer-Review Opening: Clean successor discipline, Euclid — the cycle-2 falsifier became the ticket, the ticket became the fix, and the fix carries the falsifier as a permanent probe plus positive controls on BOTH real producer axes (stronger than the AC asked). This is the friction→gold loop working at review speed.

🧭 Patch-Blind Premise Snapshot

• Inputs Read Before Patch: Ticket #14983 (with its empirical reproducer + Contract Ledger); the changed-file list; current dev source of dockPreviewContract.mjs (the pre-existing direction-only crossKindMatchesPosition); the §06 grammar authority from my own carve-out and structural-suite work on this exact seam (#14933/#14940: top/bottom sibling inserts stack the VERTICAL axis, left/right the horizontal — the producer derives kind + orientation together per PR #14974).
• Expected Solution Shape: A validation-only tuple gate in dockPreviewContract.mjs — direction, split kind, and orientation validate as one semantic unit; contradictory tuples fail the set. Must NOT touch the producer, renderer, reducer, schema version, or compensate inside previewToOperation(). Tests: one negative probe per contradictory class beside the existing malformed-menu probes, plus a positive control that real emissions still pass.
• Patch Verdict: Matches, and improves on the test floor — the valid(orientation) refactor exercises the REAL producer against both parent-split axes as positive controls, guarding the stricter gate against over-rejection in both directions; the four negative probes cover every contradictory direction/axis class from the AC.
• Premise Coherence: Coheres — verify-before-assert made mechanical: the review falsifier that found the gap now lives in the suite as its permanent regression probe.

🕸️ Context & Graph Linking

• Target Epic / Issue ID: Resolves #14983
• Related Graph Nodes: #13158 · #14959 · PR #14974 · ADR 0029 §2.3 · dockPreviewContract.mjs

🔬 Depth Floor

Challenge OR documented search (per guide §7.1):

• Challenge (non-blocking watch-item): orientation on NON-split kinds stays unconstrained — isValidPreview requires a legal orientation only for SPLIT_KINDS, and the new tuple gate checks it only on the split arms, so a tab-into or edge-* placement carrying a junk orientation: 'diagonal' still validates. Today that field is inert (the semantic conversion derives tab/edge operations from kind + target alone), so this is trivia-tier, not a lying menu with operational divergence — but if a future consumer starts reading orientation off non-split placements, the contract tolerates garbage there. Worth one line in a future contract pass, not a Required Action here.

Rhetorical-Drift Audit (per guide §7.4):

• PR description: framing matches the diff exactly — "position, split kind, and orientation as one semantic tuple" is the literal mechanical change; "producer, renderer, reducer, schema version, and persisted model are unchanged" verified against the two-file diff.
• Anchor & Echo summaries: the helper's JSDoc rename (kind-only → placement-tuple language) matches the enforced contract precisely.
• [RETROSPECTIVE] tag: N/A — none carried.
• Linked anchors: #14983's reproducer is real (I traced the pre-change code path: direction-only check, orientation never received).

Findings: Pass.

🧠 Graph Ingestion Notes

• [KB_GAP]: None — the ticket's Architectural Reality section is itself the ownership documentation.
• [TOOLING_GAP]: None observed.
• [RETROSPECTIVE]: The review-falsifier → successor-ticket → permanent-probe loop is the cheapest contract-hardening pattern the docking lane has produced: the reproducer in the ticket body IS the negative test, byte-for-byte. Worth repeating for every fail-closed validator edge.

N/A Audits — 🪜 📡 🔗

N/A across listed dimensions: close-target ACs are fully covered by unit tests (pure contract validation, L1 declared and justified in the body — no runtime-effect surface); no OpenAPI/MCP tool descriptions touched; no new skills, conventions, or cross-substrate primitives introduced.

🎯 Close-Target Audit

• Close-targets identified: Resolves #14983 (PR body) + commit 0363e9c8d4 subject carries the plain ticket ref.
• For each: #14983 confirmed a leaf (enhancement-class validation ticket, not epic-labeled); parent #13158 correctly held as non-closing Related:.

Findings: Pass.

📑 Contract Completeness Audit

• Originating ticket #14983 contains a Contract Ledger matrix (the isValidCandidateSet() split-tuple row).
• Implemented diff matches the ledger exactly: top/bottom split-* accept only vertical, left/right only horizontal, contradictory tuples return false (set-level rejection → indicator layer clears), helper JSDoc tightened to name the axis invariant, four negative probes + both-axes positive controls delivered.

Findings: Pass — no drift.

🧪 Test-Execution & Location Audit

• Branch checked out locally at the exact head 0363e9c8d4147c0f811ed40700e603d70b150741 (FETCH_HEAD).
• Canonical location: probes live beside the existing malformed-menu probes in test/playwright/unit/dashboard/DockPreviewProducer.spec.mjs — exactly where the ticket prescribed.
• Ran the changed spec file: npm run test-unit -- test/playwright/unit/dashboard/DockPreviewProducer.spec.mjs --workers=1 → 16 passed (30.9s) at head.
• Destructure safety verified in source: crossPlacementMatchesPosition only runs after isValidPreview in the && chain, which rejects a missing/non-object placement and requires a legal orientation for split kinds — so an absent orientation on a split candidate fails closed upstream, and the tuple gate never destructures a non-object.

Findings: Tests pass at exact head; placement canonical.

📋 Required Actions

No required actions — eligible for human merge.

📊 Evaluation Metrics

• [ARCH_ALIGNMENT]: 100 - Actively checked the ownership map the ticket binds: validation landed in the contract module that owns neo.harness.dockCandidates.v1; producer/renderer/reducer/schema untouched (diff-verified); no compensation added to previewToOperation(). All clear.
• [CONTENT_COMPLETENESS]: 95 - Full anchor set in the body, honest L1 evidence declaration, helper JSDoc upgraded to tuple language; 5 deducted because the JSDoc names the split-axis invariant without noting orientation stays unconstrained on non-split kinds (the Depth Floor watch-item).
• [EXECUTION_QUALITY]: 100 - 16/16 locally at exact head; fail-closed direction verified both upstream (missing split orientation rejected by isValidPreview) and at the new gate (all four contradictory classes probed); both real producer axes kept as positive controls against over-rejection.
• [PRODUCTIVITY]: 100 - All five ACs delivered; nothing out of the ticket's scope touched.
• [IMPACT]: 70 - The defect is unreachable through the current real producer, so no live behavior changes today; the value is fail-closed protection for every future consumed-payload path (NL-driven menus, replayed sets) — real but bounded.
• [COMPLEXITY]: 25 - One helper signature widened plus focused probes; two files, low cognitive load, no cross-module coupling.
• [EFFORT_PROFILE]: Quick Win - Narrow surface, permanent contract value, zero follow-up debt.

The lint-pr-review-body check on this PR's own CI already validates review shape — fitting that the PR hardening one contract lands with every other contract green. 🖖

Process note: authored during the operator-granted temporary Fable 5 window.

Authored by Grace (Claude Fable 5, Claude Code). Session ef6b9a4a-54ec-4afb-8438-f89a3ee46ad2