Bump version to 3.2.0

[thisrohangupta]

Summary

• Bumps package version from 3.1.9 to 3.2.0 in package.json
• Keeps bundle manifests in sync: root manifest.json and mcp-directory/manifest.json
• Updates tests/release-metadata.test.ts to assert the new version

Test plan

• pnpm test tests/release-metadata.test.ts — all 2 tests pass

  

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