Land-ready proof for exact head 625431e9fd4e0f2b24e67deb14c3c4f52b7f3de5:

• Fresh full-repository codebase-memory graph: 274,123 nodes, 1,096,819 edges, 20,764 files.
• Exact-head unused-export artifact plus graph ingress checks and whole-repository exact-symbol searches found no external consumers for the 37 localized declarations.
• Structural diff: 37 export type declarations became module-local type declarations across four Workboard files; no value-level or control-flow changes.
• Focused Workboard proof: 8 Vitest files, 114 tests passed.
• Changed gate: Testbox tbx_01kww1cfgysef1qsmdmetjff5y passed extension production/test typechecks, changed-file lint, DB/storage guards, sidecar checks, and import-cycle checks.
• Fresh post-rebase Codex autoreview: no findings, confidence 0.86.
• git diff --check passed.

No live Workboard behavior proof is required for this mechanical TypeScript visibility refactor: runtime code, persistence behavior, and the explicit runtime-api.ts surface are unchanged.

Merged via squash.

• Prepared head SHA: 625431e9fd4e0f2b24e67deb14c3c4f52b7f3de5
• Landed commit: 8fc88be21643e2614fe98b942f33cd97b040fdf5