feat(mcp): transport parity — ingest_coverage + query baseline

[SutuSebastian]

Summary

• Add MCP/HTTP ingest_coverage tool — thin twin of codemap ingest-coverage --json; orchestration lifted to application/ingest-coverage-run.ts.
• Add optional baseline param on query and query_recipe — one-shot diff vs saved query_baselines, same envelope as CLI query --baseline (including actions on added rows for recipes).
• Lift baseline diff logic to application/query-baseline.ts (compareQueryBaseline); CLI cmd-query.ts and cmd-ingest-coverage.ts delegate to shared engines.
• Update MCP tool count 19 → 20; refresh README, mcp-instructions.md, skill templates, glossary, and cmd mcp help.

Changeset

Patch — additive transport parity; no schema version bump.

Test plan

• bun test src/application/ingest-coverage-run.test.ts src/application/query-baseline.test.ts src/application/tool-handlers.test.ts src/application/mcp-server.test.ts src/application/http-server.test.ts
• bun run typecheck
• MCP wire: ingest_coverage list + ingest; query/query_recipe baseline diff + error paths
• HTTP wire: ingest_coverage + baseline success/error status mapping
• Manual: codemap mcp lists ingest_coverage; ingest fixture then run worst-covered-exports recipe
• Manual: save_baseline → query_recipe with baseline returns diff envelope

[changeset-bot]

🦋 Changeset detected

Latest commit: fb0ea34

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@stainless-code/codemap	Patch

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 448c722a-efdc-4bb1-a393-14229f2b969d

📥 Commits

Reviewing files that changed from the base of the PR and between 4bfb067 and fb0ea34.

📒 Files selected for processing (22)

• .changeset/transport-parity-mcp.md
• README.md
• docs/architecture.md
• docs/glossary.md
• src/application/http-server.test.ts
• src/application/http-server.ts
• src/application/ingest-coverage-run.test.ts
• src/application/ingest-coverage-run.ts
• src/application/mcp-server.test.ts
• src/application/mcp-server.ts
• src/application/mcp-tool-allowlist.ts
• src/application/query-baseline.test.ts
• src/application/query-baseline.ts
• src/application/query-engine.ts
• src/application/tool-handlers.test.ts
• src/application/tool-handlers.ts
• src/cli/bootstrap.ts
• src/cli/cmd-ingest-coverage.ts
• src/cli/cmd-mcp.ts
• src/cli/cmd-query.ts
• templates/agent-content/mcp-instructions.md
• templates/agent-content/skill/10-recipes-context.md

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/transport-parity-mcp

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