Add run_mcp_surface_parity() coverage for classic discovery, streamlined discovery before _hidden_tools, and relisting in the same process after reveal. Compare complete tools/list contracts, validation-equivalent get_code aliases, capability outcomes, bounded hidden-handler recognition, and notifications/tools/list_changed without presenting dispatch recognition as behavioral proof.
Make McpClient cleanup record subprocess return codes and require both reader threads and server processes to be reaped. Close SQLite snapshot and cloned-fixture connections explicitly so ResourceWarning-as-error runs detect ownership regressions.
Render capability outcomes before tool counts in scripts/summarize-benchmark-results.py, retain response bytes and single-observation latency with explicit evidence limits, and document the parity mode in docs/BENCHMARK_CAMPAIGN.md.
Verification: 141 warning-clean benchmark/campaign/summarizer tests; optimized build/c/codebase-memory-mcp parity smoke passed for 12 capability groups with full post-reveal classic contract parity and reaped lifecycle; ruff check; source-safety; git diff --cached --check.
Signed-off-by: Andrew Hundt <ATHundt@gmail.com>
Andrew Hundt
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