Summary

Update SESSION-PROTOCOL.md to require explicit branch verification before any git operation.

Context

From retrospective analysis in PR #669, commits were made to wrong branches due to lack of verification gates. Adding this as a protocol MUST requirement prevents trust-based compliance failures.

Acceptance Criteria

• SESSION-PROTOCOL.md updated with "Branch Verification" section
• MUST requirement: Run git branch --show-current before commit operations
• Session log template includes branch declaration field
• Validation script updated to check for branch verification evidence

Technical Notes

• Reference: protocol-013-verification-based-enforcement
• This is the 3rd documented trust-based compliance failure
• Pattern: Trust-based → Verification-based enforcement

References

• PR docs(retrospective): PR co-mingling root cause analysis #669 - PR Co-Mingling Retrospective
• .agents/sessions/2025-12-31-session-01-pr-comingling-retrospective.md