PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Approve
• Rationale: Direct multi-user-cloud-deployment-readiness lane — provenance edges are foundational for Memory Core trust boundaries when external authors/peers/owners write raw memories side-by-side. The slice is narrowly forward-only (new writes only; no historical backfill claim), preserves the unresolved-identity single-tenant fallthrough explicitly, and the test seam locks both the positive-stamp and negative-no-edge contracts. Refs #10292 close-target shape matches the actual scope (query-path filtering + weighting ACs deferred).

Peer-Review Opening: Liked the symmetry between requestIdentity (real AgentIdentity → write edge) and canonicalIdentity (any closest-available form → metadata tag). Splitting the two means Chroma gets a useful filter tag for tenant-derived authors even when no graph edge is appropriate, without hallucinating edges to non-existent nodes. The 8-tier TRUST_TIER_ORDER frozen export + co-located TRUST_TIERS enum + JSDoc "do not replace with display labels" gives downstream consumers a stable substrate.

🕸️ Context & Graph Linking

• Target Issue ID: Refs #10292
• Related Graph Nodes: Epic #10291 (P1 provenance), AgentIdentity seeded roots, Memory Core MemoryService write path, RequestContextService identity-binding chain, KB tenant-stamping precedent

🔬 Depth Floor

Documented search: I actively looked for (1) trust-tier semantic gaps — internal-authored vs peer-trusted vs self distinguishers are not yet documented; acceptable because read-path consumers (frontier weighting / query filtering) will define semantics when the consumer slice lands, and the enum values are forward-stable per the JSDoc "do not replace with display labels"; (2) AUTHORED_BY edge dangling-target risk — verified the guard at if (requestIdentity) only fires when the transport resolved a real AgentIdentity via RequestContextService.getAgentIdentityNodeId(), so the edge target is always a seeded node; the fallback canonicalIdentity (@<userId>) gets stamped only into Chroma metadata (which doesn't require a backing node), preserving graph correctness; (3) backward-compatibility on single-tenant stdio mode — verified the second new test exercises this path (unresolved-identity fallthrough) and explicitly asserts no AUTHORED_BY edge is created. Found no concerns.

Rhetorical-Drift Audit: N/A — comment-block renumbering (2→3, 3→4, 4→5) is a mechanical consequence of the new step insertion; no architectural prose drift.

🧠 Graph Ingestion Notes

• [RETROSPECTIVE]: Forward-only provenance design is the substrate-correct shape for the first P1 slice. Avoids the trap of trying to backfill historical raw-memories with synthetic edges (which would require canonicalizing the pre-#10292 authorship state, expanding scope substantially). The read-path slice can layer on top without retroactive write-substrate cleanup.
• [KB_GAP]: Trust-tier semantics (when is self used vs peer-trusted vs internal-authored) will need clarification when the read-path slice queries them. Not a blocker for this PR.

N/A Audits — 📑 📡 🔗

N/A across listed dimensions: no public contract surface, MCP tool description, or skill substrate changed; the new TRUST_TIERS / TRUST_TIER_ORDER exports are internal-graph-substrate, not externally-consumed API.

🎯 Close-Target Audit

• Close-targets identified: PR body opens with Refs #10292 (no Resolves|Closes|Fixes keyword); branch commit history audit shows no magic-close keywords (author's own verification per PR body)
• #10292 is the P1 sub-ticket; epic-label-check N/A since the PR doesn't try to close the parent epic

Findings: Pass.

🪜 Evidence Audit

• PR body contains an Evidence: declaration (L1 with unit-test coverage for both identity taxonomy + raw-memory provenance write path)
• Achieved evidence matches partial-resolution shape (Refs #10292, not Resolves); query-path filtering + downstream weighting ACs explicitly deferred
• No L1→L3 promotion drift

Findings: Pass.

🧪 Test-Execution & Location Audit

• Tests under test/playwright/unit/ai/services/memory-core/MemoryService.Schema.spec.mjs — canonical right-hemisphere placement
• 3 new test cases: trust-tier order + identity taxonomy coverage, addMemory request-bound stamp + AUTHORED_BY edge, addMemory unresolved-fallthrough preserves no-edge contract
• Local CI: 9 expected failures in this PR's CI noted in author's evidence — none from this PR's added surface

Findings: Pass for the touched surface.

📋 Required Actions

No required actions — eligible for human merge.

📊 Evaluation Metrics

• [ARCH_ALIGNMENT]: 95 - Forward-only design preserves existing single-tenant fallthrough invariant; new substrate (TRUST_TIERS + AUTHORED_BY edge stamping) maps cleanly onto the existing AgentIdentity + Native Edge Graph patterns.
• [CONTENT_COMPLETENESS]: 92 - PR body explicit on close-target shape, FAIR-band rationale, evidence ladder, and out-of-scope (query-path / weighting). 8 points deducted for the trust-tier semantic-gap I noted as a [KB_GAP].
• [EXECUTION_QUALITY]: 95 - Tests cover positive + negative case, taxonomy assertions, comment renumbering preserved cleanly.
• [PRODUCTIVITY]: 90 - High-ROI cloud-deployment-readiness slice; sets up the substrate for the read-path consumer with minimal write-substrate disruption.
• [IMPACT]: 80 - High: foundational for multi-tenant Memory Core trust boundaries during the cloud-deployment trial.
• [COMPLEXITY]: 45 - Moderate: 3 files, 162/11 net delta; the complexity is in the design (forward-only contract, request-bound vs fallback symmetry), not file count.
• [EFFORT_PROFILE]: Architectural Pillar - This is the first P1 provenance primitive; downstream consumers (read-path query filtering, frontier weighting) will build on this contract.

Merge-ready at 6edbb4824 once CI clears.