PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Approve
• Rationale: Direct mirror of the already-merged #11980 MemoryService.queryMemories({minTrustTier}) pattern, applied to the summary-query half. Bounded scope (+140/-4, 3 files), narrow #10292 slice with explicit Out-Of-Scope deferral for get_context_frontier trust weighting. Test fixture lives at the right layer (Chroma-collection spy, not service-method stub) — avoids the helper-as-adapter drift pattern that bit PR #11999 cycle-1. CI green at 5dc715fdb.

Peer-Review Opening: Thanks for closing this slice — the trust-tier filter is the natural extension of #11979 provenance stamping + #11980 raw-memory filtering, and the parallel implementation makes the cross-method substrate consistent. Approving.

🕸️ Context & Graph Linking

• Target Epic / Issue ID: Refs #10292 (deliberately not Resolves — get_context_frontier weighting + forward-only migration docs remain open per PR body)
• Related Graph Nodes: #11979 (provenance stamping), #11980 (raw-memory trust filter), ai/graph/identityRoots.mjs (TRUST_TIERS + TRUST_TIER_ORDER source of authority)

🔬 Depth Floor

Documented search: I actively looked for (1) drift from the #11980 MemoryService.queryMemories parallel pattern, (2) missing-tier semantics for pre-provenance summaries, (3) ordering correctness of TRUST_TIER_ORDER indexing vs the <= comparison in matchesMinTrustTier, (4) whether SessionService actually stamps sourceTrustTier (verified at SessionService.mjs:208), and (5) whether the spy fixture at the Chroma layer adequately exercises the trust filter post-fetch logic. Found no concerns.

Rhetorical-Drift Audit:

• PR description: framing matches diff (narrow query-path slice, parallel to #11980, explicit deferral of get_context_frontier)
• OpenAPI description additions: precise, no internal cross-refs, single-line, #10292 reference only in the minTrustTier description (defensible since it grounds the filter semantics, and the cap allows it)
• [RETROSPECTIVE] tag: N/A — no retrospective tag in PR body
• Linked anchors: cited #11979 / #11980 establish the claimed pattern (verified by direct read of MemoryService.mjs:184-206)

Findings: Pass.

🧠 Graph Ingestion Notes

• [RETROSPECTIVE]: The nResults * 5 pre-fetch + post-filter pattern is now established across two query paths (queryMemories, querySummaries). If a future trust-tier query has rejection rate >80%, callers can under-deliver below requested nResults. Not a blocker for #12000 — bounded by the same pattern's empirical track record on #11980 — but the multiplier becomes substrate worth challenging if/when a third query path lands.

N/A Audits — 🎯 📡 🔗 🪜

N/A across listed dimensions: this PR adds an optional additive filter on an existing query path, with no close-target keyword (Refs not Resolves per PR body), no novel MCP tool description (only schema fields), no skill / convention / startup-substrate changes, and no observable runtime effect outside the existing service surface (close-target ACs fully unit-testable).

📑 Contract Completeness Audit

• Originating ticket #10292 has open contract context (multi-slice epic; #11979 + #11980 + this PR + remaining get_context_frontier slice)
• Implemented PR diff matches the Contract Ledger in the PR body — three rows (query_summaries param, resolveSummaryTrustTier behavior, response schema additions) all verified against the diff

Findings: Pass.

🔌 Wire-Format Compatibility Audit

PR alters ai/mcp/server/memory-core/openapi.yaml:

• QuerySummariesRequest.minTrustTier — additive optional field, backwards-compatible
• QuerySummariesResponse.summaries[].sourceAgentIdentities / .sourceTrustTier / .provenancePolicy — additive optional response fields, backwards-compatible (existing clients ignore extra fields)

Enum values match TRUST_TIER_ORDER exactly. No breaking changes; old summaries pre-provenance get classified as unclassified at read time (verified at SummaryService.mjs:resolveSummaryTrustTier).

Findings: Pass.

🧪 Test-Execution & Location Audit

• PR body Test Evidence lists SummaryService.TenantIsolation.spec.mjs — 16/16 passed + McpServerToolLimits.spec.mjs — 3/3 passed
• Canonical Location: new tests added to existing test/playwright/unit/ai/services/memory-core/SummaryService.TenantIsolation.spec.mjs (correct per unit-test.md)
• CI verified green at 5dc715fdb (unit + integration-unified + lint-pr-body + CodeQL + Retired Primitives Check all PASS)
• Spy fixture pattern matches the 3 existing describe blocks in same file (lines 124, 239, 338) — Chroma-collection-layer spy, not service-method stub. Avoids the helper-as-adapter stub drift pattern that bit PR #11999 cycle-1.
• Test coverage hits both filter-happy-path (4 input rows → 2 pass minTrustTier: 'peer-trusted') and reject-invalid-tier (storage not called when validation fails)

Findings: Pass. Local re-run skipped — CI is green, fixture is the established pattern, and test layer is at the right boundary (no stub-masking risk).

📋 Required Actions

No required actions — eligible for human merge.

📊 Evaluation Metrics

• [ARCH_ALIGNMENT]: 95 - Direct parallel of established #11980 pattern. resolveSummaryTrustTier correctly distinguishes summary-provenance (most-restrictive-source-stamped) from raw-memory provenance (per-memory direct stamp). <= comparison semantics in matchesMinTrustTier correctly read "row's tier rank ≤ min tier rank" = "row at least as trusted as min."
• [CONTENT_COMPLETENESS]: 90 - PR body has Contract Ledger, Test Evidence, Post-Merge Validation, Out-Of-Scope deferral. 10 points deducted for the over-target FAIR-band [15/30] without an explicit Avoided Traps section (would help future-reviewer cross-reference, but defensible given the parallel-pattern framing).
• [EXECUTION_QUALITY]: 95 - Fixture at the right layer; tests cover happy path + invalid-input rejection; OpenAPI schema additions match the runtime contract; backwards-compatible additive changes.
• [PRODUCTIVITY]: 90 - Closes one AC surface of #10292 cleanly; explicitly defers get_context_frontier to keep scope bounded.
• [IMPACT]: 70 - Moderate: closes one slice of a multi-slice ticket. The full #10292 impact lands once get_context_frontier weighting + migration docs are addressed.
• [COMPLEXITY]: 35 - Low: mirror of established pattern, narrow surface, additive schema changes.
• [EFFORT_PROFILE]: Quick Win - Bounded scope leveraging established precedent; clean parallel implementation.

Approving — eligible for operator merge.