[original4422]

Summary

With llm.manual_mode: true, overriding --primary-model or --secondary-model rebuilds the model configs without the manual flag. The OpenAI backend then initializes its API client instead of using the manual task queue. Preserve manual_mode when propagating shared settings during rebuild:

 rebuild_models shared_config:
+    "manual_mode": self.manual_mode

Evidence

• New regressions fail on the original code (6 subcase failures) and pass with the fix. They cover both model lists, primary/secondary CLI overrides, manual mode and normal-mode controls, and provider routing with the external client mocked.
• Nearest CLI/provider/config tests: 29 passed.
• python -m unittest discover tests: 915 tests, OK (2 skipped), using a placeholder API key.
• Pinned isort 7.0.0 and Black 25.12.0 checks pass on both changed files; git diff --check passes. The pre-commit wrapper could not fetch its hook repository, so these two pinned tools were run directly.

Merge Danger

Door: two-way. Blast Radius: configuration. The change keeps rebuilt model settings consistent with initial model construction; tests intercept external execution and make no LLM requests.