Summary

This PR isolates stdio/logging safety changes from markdown-converter work.

MCP stdio transport uses stdout for protocol frames, so accidental console.log output can corrupt tool transport. This change routes those logs to stderr.

Changes

• In src/server.ts, redirect top-level console.log(...) calls to console.error(...).
• In src/googleDocsApiHelpers.ts, change verbose debug console.log(...) calls to console.error(...).

Why

• Prevent non-protocol output from leaking into stdout on MCP transport.
• Keep debug visibility while preserving protocol safety.

Validation

• npm run build
• node --test tests/markdown.test.js
  • 17 passed, 0 failed (on current main test set)