PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Approve
• Rationale: The current ticket body is stale, but the later same-ticket Revised Contract Ledger explicitly supersedes the healthcheck/OpenAPI shape. The diff matches that revised ledger: the census lives on GraphService, the slow incident-edge scan is opt-in, and the operator entrypoint is an on-demand maintenance script rather than a healthcheck or MCP surface.

Peer-Review Opening: Peer review for #12602 at exact head fcef41635bd1204330913ec3026d1b8c725ebf27. I treated the PR body and ticket comments as claims to verify, not authority by themselves.

🧭 Patch-Blind Premise Snapshot

• Inputs Read Before Patch: #10158 body, #10158 later Revised Contract Ledger comment, changed-file list, current GraphService source, sibling ai/scripts/maintenance/auditGraphIntegrity.mjs, package.json script placement, KB query for Memory Core graph/healthcheck context, unit-test guide, and the PR review guide/template.
• Expected Solution Shape: Correct implementation should expose cheap deployment-wide Memory/Session lifecycle telemetry without hardcoding it into HealthService.healthcheck(), MCP OpenAPI schemas, or any always-loaded tool surface. It must not make the O(edges) incident-edge scan default behavior, and tests should isolate SQL/count/file-size/script wiring without needing a live production graph.
• Patch Verdict: Matches the revised ledger. GraphService.getLifecycleCensus({includeIncidentEdges}) returns cheap node/file census by default, adds edge counts only when requested, graphLifecycleReport.mjs is an on-demand maintenance sibling to auditGraphIntegrity.mjs, and focused tests cover method semantics plus script parse/format/run behavior.

🕸️ Context & Graph Linking

• Target Epic / Issue ID: Resolves #10158
• Related Graph Nodes: #10143 residual AC4, #12595 superseded shape, Memory Core Native Edge Graph, GraphService, Memory/Session provenance anchors

🔬 Depth Floor

Challenge OR documented search (per guide §7.1):

Challenge: The only residual risk is baseline capture: the live graph payload cannot be captured in this sandbox and remains an operator post-merge validation step. I checked the doc and PR body for overclaiming; both keep that live baseline as post-deploy work instead of pretending unit fixtures are production telemetry.

Rhetorical-Drift Audit (per guide §7.4):

• PR description: cost framing matches the mechanical diff; no healthcheck/OpenAPI/MCP surface is added.
• Anchor & Echo summaries: GraphService#getLifecycleCensus and script JSDoc describe the concrete runtime/context cost and opt-in scan boundary.
• [RETROSPECTIVE] tag: no inflated tag in the PR body.
• Linked anchors: #10158 contains the stale original ledger and the later revised ledger; the review relies on the later same-ticket ledger for current intent.

Findings: Pass.

🧠 Graph Ingestion Notes

• [KB_GAP]: None found.
• [TOOLING_GAP]: None. Targeted unit verification and script smoke both passed locally.
• [RETROSPECTIVE]: Moving high-cost observability out of always-loaded MCP/healthcheck surfaces is the right substrate shape when the useful payload is operator-periodic rather than per-agent/per-call.

🎯 Close-Target Audit

• Close-targets identified: #10158 via newline-isolated Resolves #10158 in the PR body.
• For each #N: confirmed not epic-labeled. gh issue view 10158 shows enhancement, ai, architecture, core; no epic label.

Findings: Pass.

📑 Contract Completeness Audit

• Originating ticket contains a Contract Ledger matrix. The body ledger is stale, and the same ticket has a later Revised Contract Ledger comment that explicitly supersedes the body shape.
• Implemented PR diff matches the revised Contract Ledger exactly: method payload keys, deployment-wide counts, SQLite file-size semantics, unavailable fallback, --edges opt-in, on-demand script entrypoint, retention guide path, and unchanged out-of-scope pruning/archival boundaries.

Findings: Pass, with the explicit staleness note above. I am not treating the older body ledger as current because that would preserve stale ticket intent over the later verified same-ticket contract.

🪜 Evidence Audit

• PR body contains an Evidence: L2 declaration.
• Achieved evidence matches the unit-coverable surface: method semantics, script argument/format/run wiring, and help smoke.
• Residual live baseline is listed under Post-Merge Validation, which is the correct boundary for production graph-store measurement.
• Review language does not promote unit fixtures to a live production baseline.

Findings: Pass.

N/A Audits — 📡

N/A across listed dimensions: no MCP OpenAPI/tool-description surface is modified; this PR deliberately avoids adding that always-loaded schema surface.

🔗 Cross-Skill Integration Audit

• No existing workflow skill needs a new trigger for this operator maintenance script.
• No AGENTS_STARTUP.md workflow list update is needed.
• The new convention is documented in learn/agentos/measurements/MemorySessionGraphLifecycle.md and exposed through package.json.
• No MCP tool documentation update is needed because no tool is added.

Findings: All checks pass — no integration gaps.

📜 Source-of-Authority Audit

Triggered because the PR and review discuss an operator-directed reshape. I did not use that attribution as proof of correctness; I verified the later same-ticket Revised Contract Ledger, the diff, focused tests, local smoke, and live CI state before approving.

🧪 Test-Execution & Location Audit

• Branch checked out locally via checkout_pull_request.
• Canonical Location: AI/right-hemisphere unit tests live under test/playwright/unit/ai/...; the script test is under test/playwright/unit/ai/scripts/maintenance/ and service coverage remains under test/playwright/unit/ai/services/memory-core/.
• Ran changed related tests: npm run test-unit -- test/playwright/unit/ai/services/memory-core/GraphService.spec.mjs test/playwright/unit/ai/scripts/maintenance/graphLifecycleReport.spec.mjs → 33 passed.
• Ran script smoke: npm run ai:graph-lifecycle-report -- --help → usage/options rendered.
• Ran diff hygiene: git diff --check origin/dev..HEAD → clean.
• Live CI at exact head fcef41635bd1204330913ec3026d1b8c725ebf27: mergeStateStatus: CLEAN; lint-pr-body, CodeQL, MCP test-location lint, retired-primitives check, substrate size guard, integration-unified, tree-json lint, and unit all success.

Findings: Tests pass.

📋 Required Actions

No required actions — eligible for human merge.

📊 Evaluation Metrics

• [ARCH_ALIGNMENT]: 95 — 5 points deducted only because the method is a new public GraphService surface where sibling precedent had avoided one; the revised ledger justifies it and the implementation keeps the contract minimal.
• [CONTENT_COMPLETENESS]: 94 — 6 points deducted because the original ticket body remains stale; the PR compensates with an explicit same-ticket revised ledger, PR delta explanation, JSDoc, and retention guide.
• [EXECUTION_QUALITY]: 97 — 3 points deducted for the unavoidable post-merge live-baseline dependency; code paths, fallback semantics, CLI wiring, and focused tests are clean.
• [PRODUCTIVITY]: 96 — 4 points deducted because baseline capture is intentionally deferred to the operator’s live store; otherwise the reshaped #10158 goals are delivered.
• [IMPACT]: 78 — significant Agent OS observability improvement with context-budget and hot-path protection, but not a new core runtime primitive.
• [COMPLEXITY]: 62 — moderate cross-surface change across service API, maintenance CLI, tests, package script, and policy doc, with no schema or MCP expansion.
• [EFFORT_PROFILE]: Heavy Lift — this is not large by LOC, but it corrects a wrong architectural surface while preserving measurable telemetry and retention-policy intent.

Approved. Human merge only; I am not executing gh pr merge.