The review of the pipeline resumption feature is complete. The implementation is robust, well-integrated, and backed by a comprehensive test suite.

### expert_build/cli.py
VERDICT: PASS
CORRECTNESS: VALID
SPEC_COMPLIANCE: N/A
ISSUE_COMPLIANCE: N/A
BELIEF_COMPLIANCE: N/A
TEST_COVERAGE: COVERED
INTEGRATION: WIRED
REASONING: Correctly adds the `--resume` argument to the `pipeline` subcommand, providing the necessary CLI interface for the new functionality.
---

### expert_build/pipeline.py
VERDICT: PASS
CORRECTNESS: VALID
SPEC_COMPLIANCE: N/A
ISSUE_COMPLIANCE: N/A
BELIEF_COMPLIANCE: N/A
TEST_COVERAGE: COVERED
INTEGRATION: WIRED
REASONING: Implements a reliable state management system. 
- **State Logic**: Correctly identifies completed stages and skips them on resumption.
- **Loop Resumption**: Handles the convergence loop (Stages 4-7) by restarting from the last unfinished cycle (`current_cycle`), which is a safe and pragmatic approach.
- **Error Handling**: Captures exceptions and stores full tracebacks in the state file, aiding in debugging failures.
- **Metadata**: Tracks useful metadata such as timestamps and skip status for optional stages.
---

### tests/test_pipeline.py
VERDICT: PASS
CORRECTNESS: VALID
SPEC_COMPLIANCE: N/A
ISSUE_COMPLIANCE: N/A
BELIEF_COMPLIANCE: N/A
TEST_COVERAGE: COVERED
INTEGRATION: WIRED
REASONING: The new tests provide excellent coverage for the feature. They verify:
- Creation and correct marking of state files on successful runs.
- Persistence of error information on failure.
- Correct skipping of completed stages during resumption.
- Graceful handling of corrupt state files and "already completed" scenarios.
- The "paused" state behavior when manual intervention is required.
---

### SELF_REVIEW
LIMITATIONS: I noted that re-running stages 4-7 within an interrupted cycle is slightly inefficient (it repeats work for that specific cycle), but safe due to the idempotent nature of the derivation and deduplication logic. I did not see the full `cli.py` `main()` entry point, but the subcommand integration follows the established pattern in the codebase.
---
