What Problem This Solves

Removes 47 stale named exports from test, tooling, and UI test-helper modules. These helpers are implementation details with local callers, but their exported surface implied unsupported reuse and increased dead-code/search noise.

Why This Change Was Made

The codebase-memory graph was rebuilt from current main, then every candidate was verified to have local callers, no external JavaScript/TypeScript references, no wildcard re-export path, and no package entry-point exposure. Shared Parallels helpers were excluded because their modules are intentionally re-exported through scripts/e2e/parallels/common.ts.

User Impact

No runtime or visual behavior changes. Maintainers get a smaller, more accurate internal API surface across test harnesses, tooling scripts, Vitest configuration, and the Control UI chat-model test helper.

Evidence

• Fresh full codebase-memory index: 21,039 files, 281,271 nodes, 1,133,750 edges, zero extraction errors.
• Exact committed-state reference audit: 47 functions across 39 files retain local callers and have zero external code references.
• Diff: 47 insertions, 54 deletions, net -7 lines.
• Testbox tbx_01kwz3xgsc463fq3z2k52kgk1a: pnpm check:changed passed.
• Focused Testbox suite: 17 files, 723 tests passed across unit-fast, tooling, UI, and e2e shards.
• Fresh local and branch autoreview: no findings, 0.90 confidence each.

AI-assisted: yes. The change and proof were reviewed before submission.