Breaking change for TPMJS spec:
- Remove `exportName` field support from TpmjsToolDefinitionSchema
- Make `name` field required (replaces deprecated `exportName`)
- Update create-basic-tools to generate `name` field
- Update sync routes to use `name` from validated schema
- Add `permissions: contents: write` to Vercel registry sync workflow
Packages using the old `exportName` field must update to use `name`.