- Preserve class identity and member storage through interface and intersection refinements.
- Replace TypeScript runtime enum imports with pinned native constants and name lookups.
- Use concrete type predicates in the native semantic client.
- Replace SDK snapshots, projects, and programs with the owned native client.
- Preserve source identity across snapshots with native paths, caches, metadata, and diagnostics.
- Collect request timing and close snapshot state reliably without SDK helpers.
- Replace SDK semantic objects with native type, symbol, and signature registries.
- Route production checker queries through the owned client while preserving identity and snapshot lifetimes.
- Support scalar BigInt conversion and class union checks needed by native semantic decoding.
- Replace SDK AST materialization with checked native node, list, and text decoding.
- Preserve checker handle identity and snapshot reuse across the frontend.
- Compile generic visitors and guarded node-list iteration without dynamic execution.
Chris Tate