[Code Quality] Create workflow health dashboard command (gh aw health)

[github-actions]

Description

Create a new gh aw health command that displays workflow success/failure rates, execution trends, and health metrics over time. This enables proactive monitoring to catch degrading workflows before they become critical issues.

Current Behavior

• No centralized view of workflow health
• Must manually check each workflow's GitHub Actions page
• No historical trend analysis or anomaly detection
• Issues discovered reactively when workflows fail

Desired Behavior

• gh aw health shows summary of all workflows with success rates
• gh aw health workflow-name shows detailed metrics for specific workflow
• Historical analysis: last 7/30/90 days
• Trend indicators (improving ↑, stable →, degrading ↓)
• Alerting when success rate drops below threshold (default 80%)

Files Affected

• pkg/cli/health_command.go (new file)
• pkg/cli/health_metrics.go (new file)
• pkg/cli/flags.go (add health-related flags)

Suggested Changes

1. Create health_command.go following CLI command patterns
2. Implement summary view (all workflows)
3. Implement detailed view (single workflow)
4. Fetch workflow runs from GitHub API (7/30/90 days)
5. Calculate success rate, failure rate, average duration
6. Detect trends with visual indicators
7. Add --threshold flag for alerting
8. Support table and JSON output formats

Success Criteria

• gh aw health shows all workflow summaries
• gh aw health (workflow-name) shows detailed metrics
• Historical analysis for 7/30/90 days works
• Trend detection implemented (↑→↓ indicators)
• --threshold flag highlights low success rates
• --json flag for programmatic consumption
• Unit tests and integration tests added
• Documentation in CLI reference
• Health monitoring guide created

Example Output

Workflow Health Summary (Last 7 Days)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Workflow                 Success Rate  Trend  Avg Duration
issue-monster.md         100%  (50/50) ↑      2m 30s
code-review.md           94%   (47/50) →      3m 15s
dependency-update.md     78%   (39/50) ↓ ⚠️   5m 45s

⚠️ 1 workflow below 80% success threshold
ℹ Run 'gh aw health (workflow-name)' for details

Priority

High - Provides proactive visibility, prevents user-reported issues, critical for scaling 198+ workflows

Source

Extracted from Repository Quality Improvement Report - Workflow Health Monitoring #12540 - Task 2

AI generated by Discussion Task Miner - Code Quality Improvement Agent

• expires on Feb 12, 2026, 5:15 PM UTC

[github-actions]

🍪 Issue Monster has assigned this to Copilot!

I've identified this issue as a good candidate for automated resolution and assigned it to the Copilot agent.

The Copilot agent will analyze the issue and create a pull request with the fix.

Om nom nom! 🍪

AI generated by Issue Monster