gsd:forensics— agent skill

<objective> Investigate what went wrong during a GSD workflow execution. Analyzes git history, .planning/ artifacts, and file system state to detect anomalies and generate a structured diagnostic report.

Purpose: Diagnose failed or stuck workflows so the user can understand root cause and take corrective action. Output: Forensic report saved to .planning/forensics/, presented inline, with optional issue creation. </objective>

<execution_context> @${CLAUDE_PLUGIN_ROOT}/workflows/forensics.md </execution_context>

<context> Data sources:

• git log (recent commits, patterns, time gaps)
• git status / git diff (uncommitted work, conflicts)
• .planning/STATE.md (current position, session history)
• .planning/ROADMAP.md (phase scope and progress)
• .planning/phases/*/ (PLAN.md, SUMMARY.md, VERIFICATION.md, CONTEXT.md)
• .planning/reports/SESSION_REPORT.md (last session outcomes)

User input:

• Problem description: $ARGUMENTS (optional — will ask if not provided)

</context>

<process> Read and execute the forensics workflow from @${CLAUDE_PLUGIN_ROOT}/workflows/forensics.md end-to-end. </process>

<success_criteria>

• Evidence gathered from all available data sources
• At least 4 anomaly types checked (stuck loop, missing artifacts, abandoned work, crash/interruption)
• Structured forensic report written to .planning/forensics/report-{timestamp}.md
• Report presented inline with findings, anomalies, and recommendations
• Interactive investigation offered for deeper analysis
• GitHub issue creation offered if actionable findings exist

</success_criteria>

<critical_rules>

• Read-only investigation: Do not modify project source files during forensics. Only write the forensic report and update STATE.md session tracking.
• Redact sensitive data: Strip absolute paths, API keys, tokens from reports and issues.
• Ground findings in evidence: Every anomaly must cite specific commits, files, or state data.
• No speculation without evidence: If data is insufficient, say so — do not fabricate root causes.

</critical_rules>