Problem

The Control UI still exposes internal-only aliases and carries stale response types that have no consumers. This inflates the public TypeScript surface and leaves dead declarations behind.

Scope

• delete declaration-only UI response and protocol aliases
• remove an unused normalization re-export
• localize aliases and helpers used only inside their defining module

Evidence

• current-main full codebase-memory graph and whole-repo symbol search
• focused UI tests
• pnpm check:changed in Blacksmith Testbox
• fresh autoreview