fix(cli): revert broken merge and stabilize table-null-contract

[marlon-costa-dc]

Reverts broken merge d58c2f2 and applies table-null-contract test coverage stabilization:

• Revert merge: d58c2f2
• Modify: tests/unit/test_tables_cov.py

---

Summary by cubic

Reverts the broken merge d58c2f2 on the 0.12.0-dev base and stabilizes the table-null-contract coverage gates. The merge pulled unrelated agent config and docs changes into this branch; reverting restores the pre-merge tree. The null-contract tests in tests/unit/test_tables_cov.py now pass consistently instead of failing intermittently.

^{Written for commit 34af63c. Summary will update on new commits.}

[sonarqubecloud]

Quality Gate failed

Failed conditions
E Security Rating on New Code (required ≥ A)

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