TanStack DB

Type: normalized client-store reference

TanStack DB is the best non-editor analogy for annotation metadata in this lane.

Why it matters

• normalized collections and live queries fit external annotation stores well
• useSyncExternalStore plus stable snapshots is the right React posture
• better model for annotation metadata than rerender-time arrays

Strongest local evidence

• ../db/README.md
• ../db/packages/react-db/src/useLiveQuery.ts

Limits

• not an editor engine
• useful for store shape and runtime posture, not text semantics