User Story

As a developer working on investigation sessions
I want the pre-commit validator to recognize investigation-only mode
So that I can commit investigation artifacts without bypassing validation

Parent Epic

• Epic Epic: ADR-034 Investigation Session QA Exemption Implementation #649: ADR-034 Investigation Session QA Exemption Implementation

Acceptance Criteria

• $investigationAllowlist constant defined in Validate-Session.ps1
• Evidence pattern (?i)SKIPPED:\s*investigation-only recognized
• Staged files validated against allowlist
• Clear error message E_INVESTIGATION_HAS_IMPL for violations
• Metrics counter tracks investigation-only skips
• All 10 test cases pass

Investigation Artifact Allowlist

$investigationAllowlist = @(
    '^\.agents/sessions/',
    '^\.agents/analysis/',
    '^\.agents/retrospective/',
    '^\.serena/memories($|/)',
    '^\.agents/security/'
)

Test Cases

Technical Notes

• Target file: scripts/Validate-Session.ps1 (lines 336-351)
• Pattern must be case-insensitive to match existing docs-only pattern
• Validation runs during pre-commit hook

References

• ADR-034: .agents/architecture/ADR-034-investigation-session-qa-exemption.md