Agent Skills: Fix Package TypeScript Errors

Fix Package TypeScript Errors

1. Resolve the target package path and read its package.json plus nearest AGENTS.md.
2. Run the package's declared check-types, typecheck, or check script. Prefer bun run --cwd <package> <script> or the workspace's documented vp command; do not assume a Turbo task exists.
3. Group errors by root cause and fix the smallest group first.
4. Preserve discriminated unions and exhaustiveness. Do not use any, broad assertions, or ignore directives to silence failures.
5. Re-run the exact focused command after each patch.
6. If the correct fix belongs to another package, report that ownership issue instead of adding a local compatibility cast.

Completion requires zero target-package TypeScript errors from the declared package check, with any unrelated baseline failures recorded separately.