### expert_build/cli.py:main
VERDICT: PASS
CORRECTNESS: VALID
SPEC_COMPLIANCE: N/A
ISSUE_COMPLIANCE: N/A
BELIEF_COMPLIANCE: N/A
TEST_COVERAGE: COVERED
INTEGRATION: WIRED
REASONING: The addition of an explicit consistency check between `argparse` subparsers and the `commands` dispatch dictionary is a robust defensive programming practice. It ensures that any new subcommand added to the CLI must also have a corresponding handler registered, preventing `KeyError` at runtime. The error messages are descriptive, sorted for reproducibility, and correctly directed to `stderr`.
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### tests/test_cli.py
VERDICT: PASS
CORRECTNESS: VALID
SPEC_COMPLIANCE: N/A
ISSUE_COMPLIANCE: N/A
BELIEF_COMPLIANCE: N/A
TEST_COVERAGE: COVERED
INTEGRATION: WIRED
REASONING: This new test file effectively validates the current CLI state. By mocking `sys.argv` and the `_lazy` import mechanism, it performs a lightweight check of the registration logic without requiring the full dependencies of every subcommand. This ensures that the codebase remains in a valid state as new commands are added.
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### SELF_REVIEW
LIMITATIONS: I relied on the provided observation of the `main` function body to verify that the `commands` dictionary and `sub.add_parser` calls are indeed in sync in the current version. The review is complete based on the provided diff and file context.
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