fix: require name field in TPMJS spec, add workflow permissions

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`.

.github/workflows/sync-vercel-registry.yml

@@ -12,6 +12,9 @@ on:
     paths:
       - 'sync-vercel-registry.ts'
 
+permissions:
+  contents: write
+
 jobs:
   sync-vercel:
     runs-on: ubuntu-latest