## @isaacs/ttlcache Migration Learnings

- Successfully replaced manual TTL cache with `@isaacs/ttlcache` in `fingerprint.ts`.
- Use `catalog:` for dependency management in the Bun monorepo.
- `TTLCache` does not handle in-flight request deduplication, so the `inFlight` Promise pattern was preserved.
- Alphabetical sorting in `package.json` catalog is important for consistency.
- Biome handles import organization and formatting; `bun fix` should be run after manual edits.