Feat: Implement Project Chronicle Guard Policy and Second Brain Trace enhancements

docs/records/ConnectAI/development/2026-05-02_project-claim-policy-enforcement.md

@@ -0,0 +1,35 @@
+# Development Log: Project Claim Policy Enforcement
+
+## Purpose
+Make the main answer obey Second Brain Trace evidence limits, especially when selected notes are General Knowledge or mixed with weak project evidence.
+
+## User Feedback
+Trace classification improved, but the main answer could still say phrases like "the architecture is flexible" or "the technical foundation is stable" without enough project evidence.
+
+## Implementation Summary
+- Added `projectClaimPolicy` to Second Brain Trace:
+  - `allow`
+  - `cautious`
+  - `general-only`
+- Added `projectClaimPolicyReason`.
+- Changed policy derivation so broad project claims are allowed only when all selected notes can support project claims and grounding is high.
+- Added strict guidance for `general-only`.
+- Added caution guidance for mixed evidence.
+- Added required wording for unsupported technical structure claims:
+  - "현재 정보만으로는 기술 구조를 판단할 수 없습니다."
+- Added tests for General Knowledge-only and mixed-evidence cases.
+
+## Changed Files
+- `src/features/secondBrainTrace.ts`
+- `src/utils.ts`
+- `src/features/projectChronicle/guardPrompt.ts`
+- `tests/secondBrainTrace.test.ts`
+- `tests/projectChronicleGuardPrompt.test.ts`
+
+## Verification
+- `./node_modules/.bin/tsc --noEmit`
+- `npm run compile`
+- `./node_modules/.bin/jest --runInBand`
+
+## Result
+Trace warnings now feed a clearer policy into the answer context, making it harder for the model to turn general architecture notes into unsupported project facts.

docs/records/ConnectAI/timeline.md

@@ -16,3 +16,4 @@
 - Removed hard-coded local template replies for Second Brain overview and unproductive-response correction.
 - Added progressive answer format guidance: short conclusion first, brief summary second, detailed answer third.
 - Added No Evidence, No Project Claim rules and Second Brain source type classification to prevent general notes from being treated as project implementation evidence.
+- Added project claim policy enforcement so main answers must treat general-only or mixed evidence as cautious and avoid unsupported technical structure claims.