SuperBizAgent-java/openspec/changes/archive/2026-07-04-evidence-trace-hardening/tasks.md

1. Evidence Persistence Contract

• 1.1 Extend ToolInvocationRecorder with a richer evidence-recording path that can preserve retrieval-aware fields as well as common evidence fields.
• 1.2 Refactor LookupKnowledgeTool to persist tool_invocation rows through ToolInvocationRecorder instead of its own ad hoc row-construction path.
• 1.3 Align QueryLogsTools and QueryMetricsTools no-hit / failure payloads with the hardened evidence contract.

2. Verifier-Facing Summary Semantics

• 2.1 Harden ToolTraceSummaryService so failed, no-hit, and deduped evidence rows are summarized with stable no-evidence semantics.
• 2.2 Preserve merged-call counts for repeated hits, failures, and no-new-evidence rows without overstating evidence strength.

3. Chat Degraded Paths

• 3.1 Add focused ChatService tests for missing verifier output fallback to LOW_CONFID.
• 3.2 Add focused ChatService tests for invalid verifier JSON fallback to LOW_CONFID.
• 3.3 Add focused ChatService tests that REJECT output uses the degraded template and does not leak raw executor answer content.

4. Verification

• 4.1 Add focused offline tests for the recorder contract and ToolTraceSummaryService.
• 4.2 Run targeted test commands for the new/updated offline tests.
• 4.3 Run compile verification.