PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Approve
• Rationale: Completes the deferred follow-up #13853 explicitly left open — the shared reasoning_effort leaf was being stripped inert for native Ollama ("the no-think wiring are a separate follow-up; until then these keys are inert"). This PR does the mapping: reasoning_effort: 'none' → native top-level think:false, so the #13853 shared reasoning leaves now actually disable thinking for Ollama-backed summary / tri-vector extraction. ADR-0019-aligned (provider translates provider-neutral options at the boundary; callers read leaves at use-site). 18 specs pass at head, back-compat preserved. Approve (not Approve+Follow-Up) — the only gap (non-none effort values) is already explicitly Out-of-Scope in the ticket with a stated reason, not an unaddressed concern.

Peer-Review Opening: Euclid — reviewed as the rerouted primary reviewer (ada out). This is the native-Ollama-provider cluster I've been reviewing this cycle (#13866/#13868 siblings), so I focused on the payload-normalizer flow, explicit-think precedence, the no-leak guarantee, and the source-history (is this re-doing a reverted approach?). All sound.

🧭 Patch-Blind Premise Snapshot

• Inputs Read Before Patch: #13869 (close target, with its Contract Ledger + 4 ACs), the existing extractNativeOllamaFields + preparePayload flow on current source, the #13853/#13855/#13856 cluster history (git log -S), and the Ollama API think semantics cited in the ticket.
• Expected Solution Shape: at the Ollama payload boundary, translate provider-neutral reasoning_effort: 'none' into the native think:false switch, let an explicit caller think win, and never leak reasoning_effort into payload.options — without mutating the caller's options object.
• Patch Verdict: Matches exactly. In extractNativeOllamaFields: if (options.think !== undefined) uses the explicit value (AC2); else if (options.reasoning_effort === 'none') fields.think = false (AC1); delete options.reasoning_effort runs unconditionally after (AC3). preparePayload clones options (L139, no caller mutation), Object.assign(payload, extractNativeOllamaFields(clonedOptions)) (L144) merges think into the payload, and payload.options = clonedOptions (L169) runs after reasoning_effort is already deleted. The now-redundant delete clonedOptions.reasoning_effort is correctly removed and the stale "separate follow-up / inert" comment updated.
• Premise Coherence: Coheres with verify-before-assert and ADR-0019 — a shared config leaf is only real once every routed provider honors it; this makes the leaf produce its documented native effect rather than being silently dropped. No value-surface conflict.

🕸️ Context & Graph Linking

• Target Epic / Issue ID: Resolves #13869 (carried as the title commit-ref (#13869); not asserted as a Resolves magic-keyword in the PR body — see Close-Target Audit).
• Related Graph Nodes: Parent #13854; siblings #13853 (the shared reasoning leaves), #13855/#13856 (the native think/format field), #13865/#13866 (Ollama readiness), #13867/#13868 (serve lifecycle).

🔬 Depth Floor

Challenge OR documented search (per guide §7.1):

• Challenge (non-blocking): Non-none reasoning_effort is silently inert for Ollama. A 'low'/'medium'/'high' value hits neither branch, so no think is set, but delete options.reasoning_effort still drops it — no mapping, no warning. This is explicitly Out-of-Scope in #13869 ("Native mappings for non-none values need separate Ollama behavior evidence"), and in practice the shared leaves are set to 'none'. Flagging only so a future deployment routing a non-none effort to Ollama knows it is currently a no-op.
• Documented search: I looked for (1) a prior reverted native reasoning→think mapping (git log -S reasoning_effort -- ai/provider/Ollama.mjs → introduced inert by #13853, mapped here for the first time, no revert), (2) caller-options mutation (clone at L139 preserves the caller object, matching the #13855 "without mutating caller options" pattern), and (3) reasoning_effort leaking into options (both new tests assert it undefined) — and found no concerns.

Rhetorical-Drift Audit (per guide §7.4):

• PR description: framing matches what the diff substantiates (the mapping, the explicit-override precedence, the no-leak deletion are all present)
• Anchor & Echo summaries: the JSDoc addition ("Provider-neutral reasoning_effort: 'none' maps to Ollama's native think:false switch") is precise codebase terminology, no overshoot
• [RETROSPECTIVE] tag: N/A (none in the diff)
• Linked anchors: #13853 genuinely established the inert-strip this completes (verified via source-history)

Findings: Pass.

🧠 Graph Ingestion Notes

• [RETROSPECTIVE]: Provider-neutral vocabulary needs translation, not passthrough or silent drop — reasoning_effort is OpenAI-style and meaningless to Ollama's native API, so the provider boundary maps the 'none' intent to the documented think:false switch. A shared config leaf is only real once every routed provider honors it; until then it is a silent no-op (the exact gap #13853 deferred and this closes).

🎯 Close-Target Audit

• Close-targets identified: #13869 (via the title commit-ref; the PR body does not use a Resolves/Closes/Fixes magic keyword).
• For #13869: confirmed not epic-labeled (it is a leaf under epic #13854; correctly does not claim to close the parent — the cloud benchmark remains open per the ticket's Avoided Traps).

All 4 ACs met: 'none'→think:false (test 7); explicit think wins (test 8); reasoning_effort never in options (both tests); focused unit coverage (both behaviors).

Findings: Pass. (Non-blocking suggestion: add Resolves #13869 to the PR body so the leaf auto-closes on merge.)

📑 Contract Completeness Audit

• Originating ticket #13869 contains a Contract Ledger matrix (OllamaProvider.preparePayload(options.reasoning_effort) → native /api/chat think).
• Implemented diff matches the ledger exactly: 'none' → top-level think:false; explicit think wins; unset/non-none stripped, not leaked.

Findings: Pass.

🔌 Wire-Format Compatibility Audit

(Triggered: the PR alters the native Ollama /api/chat request payload — it now emits a top-level think field derived from the no-think leaf.)

• The change is additive and back-compat: think:false is emitted only when reasoning_effort === 'none' and no explicit think was given; an explicit caller think still wins; absence of both leaves the payload think-free as before. think is a documented Ollama API field (per the ticket's cited docs). No existing caller's payload shape regresses.

Findings: Pass — additive, documented native field, no breaking change to the wire format.

N/A Audits — 🪜 📡 🔗

N/A across listed dimensions: ACs are fully covered by unit tests (no runtime/harness Evidence ladder needed); no openapi.yaml / MCP-tool-description surface touched; no new cross-skill convention or skill-file change (a focused provider-internal normalizer).

🧪 Test-Execution & Location Audit

• Branch checked out locally at exact head 56eaac095 via git fetch origin pull/13870/head in this clone (cross-clone false-green guard).
• Canonical Location: coverage lives in the existing test/playwright/unit/ai/provider/KeepAlive.spec.mjs payload-shape suite, alongside the #13855 native-field tests — correct placement.
• Ran the spec: KeepAlive.spec.mjs --workers=1 → 18 passed, 1 skipped (the skip is the live-env Ollama daemon test, correctly gated absent a daemon). The 2 new mapping tests pass.
• Code changed + tests present and verified.

Findings: Tests pass; location correct.

📋 Required Actions

No required actions — eligible for human merge.

(Reviewed as the rerouted primary reviewer; satisfies the cross-family gate. Non-blocking suggestions noted above: add Resolves #13869 to the body; the non-none-effort no-op is Out-of-Scope and fine to defer.)

📊 Evaluation Metrics

• [ARCH_ALIGNMENT]: 93 — ADR-0019 provider-boundary translation, caller-mutation-safe clone, explicit-override precedence, no-leak deletion; clean completion of #13853's deferred wiring.
• [CONTENT_COMPLETENESS]: 88 — JSDoc updated to document the mapping; stale follow-up comment corrected. Minor: the PR body could add Resolves #13869.
• [EXECUTION_QUALITY]: 92 — 18 specs pass (re-run at head), back-compat preserved, redundant delete removed cleanly.
• [PRODUCTIVITY]: 90 — makes the shared reasoning_effort leaf actually effective for native Ollama; small, well-scoped slice.
• [IMPACT]: 60 — correctness for native-Ollama no-think summary/extraction; bounded to Ollama-routed deployments.
• [COMPLEXITY]: 30 — a ~6-line normalizer change + 2 focused tests; low.
• [EFFORT_PROFILE]: Quick Win — tight diff completing a deferred follow-up, well-tested.

Approved — correct provider-neutral→native translation; source-history confirms it completes #13853's deferred follow-up rather than re-doing a reverted approach.

— Vega (@neo-opus-vega, Claude Opus 4.8)