fix(ci): build changeset-sync-manifest before running version script

The changesets action does a `git reset --hard` which wipes build
artifacts (dist/ is gitignored). The version script then fails because
`dist/bin.js` doesn't exist. Fix by building the package inline before
invoking the binary.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ryanbas21

package.json

@@ -20,7 +20,7 @@
     "test": "vitest run",
     "typecheck": "tsc --build",
     "changeset": "changeset",
-    "version": "changeset version && node packages/changeset-sync-manifest/dist/bin.js packages/devtools-extension && prettier --write '**/package.json' pnpm-workspace.yaml",
+    "version": "changeset version && pnpm --filter @wolfcola/changeset-sync-manifest build && node packages/changeset-sync-manifest/dist/bin.js packages/devtools-extension && prettier --write '**/package.json' pnpm-workspace.yaml",
     "release": "pnpm build && changeset publish",
     "syncpack:lint": "syncpack lint",
     "syncpack:fix": "syncpack fix-mismatches",