[duplicate-code] Duplicate Code Analysis Report

[github-actions]

Analysis of commit 2ccc405

Summary

Semantic analysis of the Go codebase found 2 significant duplication patterns meeting the reporting threshold (>10 lines or 3+ similar patterns). Both are in core packages and affect maintainability.

Detected Patterns

1. Case-Insensitive String Slice Normalization — Severity: Medium — See sub-issue [duplicate-code] Duplicate Code Pattern: Case-Insensitive String Slice Normalization in guard_policy.go #2258
2. SecrecyLabel / IntegrityLabel Parallel Structure — Severity: Low — See sub-issue [duplicate-code] Duplicate Code Pattern: SecrecyLabel/IntegrityLabel Parallel Wrapper Structure in difc/labels.go #2259

Overall Impact

• Total Duplicated Lines: ~40 lines across both patterns
• Affected Files: 2 (internal/config/guard_policy.go, internal/difc/labels.go)
• Maintainability Risk: Medium — bug fixes in normalisation logic need to be applied in multiple places
• Refactoring Priority: Low-to-Medium — both are self-contained and low-risk to fix

Next Steps

1. Review individual pattern sub-issues for detailed analysis
2. Prioritize the guard_policy.go normalisation extraction (pattern Configure as a Go CLI tool #1) — highest ROI
3. Consider the DIFC label wrapper pattern only if new label types are planned

Analysis Metadata

• Analyzed Files: ~55 non-test Go files in internal/
• Detection Method: Semantic code analysis (symbol/pattern search)
• Commit: 2ccc4055bb9a9a7b51c8d326d9242ae81ecf484a
• Analysis Date: 2026-03-21