Port glob, glob_util, and fs_cache modules from Oh My Pi's pi-natives crate,
adapted for napi-rs v2. Provides gitignore-respecting filesystem discovery
with a TTL-based scan cache, mtime sorting, file-type filtering, and
node_modules exclusion.
Includes a task module for async N-API work scheduling with cooperative
cancellation (timeout-based), TypeScript type declarations and wrapper,
and 12 integration tests covering pattern matching, recursion, gitignore,
maxResults, sortByMtime, fileType filtering, and cache invalidation.
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
