Reserve stdout for the JSON-RPC stream: _configure_stderr_logging() pins all
logging to stderr (and rewrites any stray stdout handler) so a log line can
never corrupt the stdio protocol. Extract a pure, testable build_server() from
_serve(). Add end-to-end tests over the mcp in-memory transport (initialize +
tools/list + tools/call), covering a successful round trip and a policy denial
surfaced as an MCP error.
Cover the stdio adapter: local-mode env bootstrap (OAuth off, API-key gate off,
per-user audit path), missing-env failure, PAT owner resolution, and dispatch
(unknown tool, write-mode policy denial, and the happy path pinning request
context to the PAT owner via the shared registry). Tidy the boundary-test
assertion so ruff and black agree.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Latte
