[HengYangDS]

Verification mistakes an archive's timestamp refresh for new content, while missing summaries can obscure unindexed archives. That can send users into a broad repair which regenerates embeddings or summaries unnecessarily.

This compares parsed exchange bounds with the stored high-water mark and reports appended content, unindexed archives, missing summaries and timestamp-only refreshes separately. It inspects an existing index read-only, avoids creating an absent database, and exits 2 when a lock prevents verification. Repair candidates are deduplicated; valid external-source rows are preserved. archiveRefreshes is diagnostic and does not select repair.

Integration

This PR owns verifier classification and repair selection. #176 owns append indexing; #193 owns rewrite/truncation reconciliation. #180 adds record-screening outcomes, which must extend this verifier rather than replace its classifications. #109 owns summary coverage and retry policy. Historical backfill remains outside this change.

Validation

Head: ab29746447333ab3755a961713b75e454386556e; base: 7e06519357777badd7a115d2014a7ef845904310.

The October 11 macOS arm64 Node 24.19.0/npm 12.2.0 qualification passed build, original bundle syntax and 356 tests across 63 files, including packaged MCP tests. It reused #176's isolated dependency tree, a captured resolver lock and a prepared model cache. The earlier separate Node 22 installation retained cold-model hook failures; it is not evidence that cold loading fits those hooks.

Only nine focused files change. Verifier and index-CLI modules are outside the MCP input graph, so dist/mcp-server.js stays byte-identical to the base. Declared Vitest 3 advisories remain; tests used trusted isolated inputs without credentials or a test server.

Hosted execution, Windows, coverage, merge and installed-user acceptance remain pending. The existing approval request on #180 covers this PR.

[HengYangDS]

CI for this verifier classification fix still awaits approval. The request on #180 has the current head and run link. Local validation remains in this PR’s description; hosted execution and installed use are unverified.