Refs #73

Scope

Add the source-aware acceptance-eval slice for the experimental public source adapter hardening work.

This PR extends the synthetic acceptance gate so it covers:

• Codex existing hard fixtures, unchanged as the compatibility path.
• Claude Code source-qualified find -> read-range for message-level evidence.
• Pi source-qualified session-level compaction find -> read-page for page context.

Implementation summary

• eval/acceptance-gate.ts now writes a fixture bundle with per-source roots for codex, claude-code, and pi.
• runAcceptanceGate() syncs all three roots into the same temporary DB and returns sourceRoots plus sourceSyncs, while preserving the existing fixtureRoot and sync Codex fields.
• Added hard goldens:
  • claude-code-message-range-context
  • pi-session-page-context
• eval/acceptance-gate.test.ts now asserts Codex + Claude Code + Pi sync counts and 6/6 hard-case pass coverage.

Verification

• npx vitest run eval/acceptance-gate.test.ts -> 1 file passed, 1 test passed.
• npm run eval:acceptance -> 6 hard cases, 6 pass, 0 fail; Codex added 6, Claude Code added 1, Pi added 1.
• npm run check -> tsc --noEmit plus Vitest, 31 files passed, 206 tests passed.
• git diff --check -- eval/acceptance-gate.ts eval/acceptance-gate.test.ts -> passed.

Risk

Low. This changes eval/test code only and does not modify production parser projection, source adapter acceptance policy, SQLite schema, or CLI behavior.

Base branch / dependencies

Base branch: agent/issue-71-query-profile

Depends on:

• Add evidence-level acceptance eval gate #75 / P0: Strengthen retrieval eval into an evidence-level acceptance gate #70 because this extends the acceptance-gate implementation.
• Make query profile scoring affect ranking #79 / Make query profile scoring real, or remove the stale abstraction #71 because this PR is stacked on the current query-profile branch.

Related but not blocking:

• Document source adapter projection contracts #78 documents source adapter projection contracts and adds contract fixture coverage. This PR adds the source-aware acceptance gate coverage requested by Harden experimental source adapters with parity privacy and contract fixtures #73.

Suggested merge order:

1. Add evidence-level acceptance eval gate #75
2. Make query profile scoring affect ranking #79
3. this PR

Trace

request_id: cxs_continue_roadmap_to_completion_20260626T054330Z_api_append

Summary by cubic

Make the acceptance eval source-aware by writing per-source fixtures and syncing codex, claude-code, and pi into one DB. Adds hard goldens for Claude Code message-range and Pi page-context to meet #73.

• New Features
  • Per-source fixture roots and syncs: returns sourceRoots and sourceSyncs while keeping fixtureRoot/sync for codex.
  • New hard cases: claude-code-message-range-context and pi-session-page-context.
  • Source-qualified find selectors with context modes: claude-code uses read-range, pi uses read-page.
  • Tests assert per-source sync counts and 6/6 hard-case passes.

^{Written for commit 1c97c73. Summary will update on new commits.}