asta-nguyen8/5/2026, 6:26:08 AM

- Add 30s timeout (configurable via callTimeoutMs) to callTool() to prevent
  hangs when Context7 subprocess is unresponsive
- Cache negative library resolutions (sentinel empty library_id) with 1-day
  TTL to skip repeated Context7 round-trips for bad library names
- Export disposeSharedClient() and wire to SIGTERM/SIGINT/exit handlers in
  MCP server to prevent orphaned Context7 subprocesses
- Add console.warn when falling back to stale cache for operator visibility
- Remove misleading FetchedDocs.tokens field (always 0; caller computes)

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