feat: add human engineer review step to process flow

[jeremyeder]

Summary

• Insert explicit human engineer review step between automated review and feedback/fixes
• Clarifies the approval workflow by showing human checkpoint after automated checks
• Improves process visibility for engineering workflow

Changes

• Updated diagrams/rfe-refinement-flow.mmd to add step 6: "AR-->>HE: Human Engineer review"
• Renumbered subsequent steps to maintain sequence flow

Test plan

• Verify mermaid syntax is valid
• Review sequence flow makes logical sense
• Generate updated PNG diagram for visualization

🤖 Generated with Claude Code

[claude]

Code Review Feedback

✅ Positive Aspects

Process Improvement: The addition of an explicit human engineer review step is a valuable improvement that clarifies the workflow and ensures proper human oversight in the automation process.

Logical Flow: The sequence now more accurately reflects real-world engineering workflows where human validation occurs after automated checks but before final approval.

Documentation Alignment: This change aligns well with the project's focus on agent-driven development while maintaining necessary human checkpoints.

🔍 Code Quality & Best Practices

Mermaid Syntax: ✅ The syntax appears correct for mermaid sequence diagrams. The arrow notation -->> for asynchronous calls and ->> for synchronous calls is properly used.

Naming Consistency: ✅ Actor and participant names are consistent with the existing diagram structure (HE, HE2, AR).

⚠️ Issues Identified

Flow Logic Error: There's a logical inconsistency in the sequence:

• Line 36: HE-->>HE2: Feedback / fixes - This suggests HE assigns work to HE2
• Line 37: HE2-->>MERGE: (Alternate) Assign to Human Eng 2 - This creates confusion as HE2 is assigning to themselves
• Line 38: HE-->>MERGE: Approve / Merge - Both HE and HE2 can merge, which is unclear

Suggested Fix: The flow should be clarified. Consider:

AR-->>HE: Human Engineer review
HE-->>HE: Feedback / fixes (self-review)
HE-->>HE2: (Alternate) Assign to Human Eng 2
HE2-->>MERGE: Review & Approve
HE-->>MERGE: Direct Approve / Merge

Missing Terminal State: The diagram lacks a clear terminal state or loop back for the feedback/fixes process.

🚀 Performance Considerations

Diagram Complexity: ✅ The change doesn't significantly impact diagram rendering performance.

Documentation Maintenance: ⚠️ Consider adding a comment in the mermaid file explaining the human review step for future maintainers.

🔒 Security Concerns

Process Security: ✅ Adding human review actually improves security by ensuring human oversight of automated processes.

🧪 Test Coverage

Missing Tests: The PR mentions generating an updated PNG but this isn't included. Consider:

1. Adding a CI check to validate mermaid syntax
2. Including the updated PNG diagram
3. Adding a simple script to generate diagrams from mermaid files

📋 Recommendations

1. Fix the flow logic as mentioned above to clarify the HE/HE2 interaction
2. Add diagram generation to complete the test plan checklist
3. Consider adding a legend to explain the different arrow types
4. Update related documentation if this process change affects other parts of the system

🎯 Overall Assessment

This is a good improvement to the process documentation that addresses a real need for human oversight in the automated workflow. The concept is sound, but needs minor fixes to the flow logic before merging to ensure clarity for future readers.

Recommendation: Request changes to fix the flow logic, then approve.