Actual Implementation Notes

What Was Built vs Original Plan

✅ Implemented

1. Timestamp Tracking (100% complete)

   • created_at, updated_at, completed_at fields in frontmatter
   • Optional transitions array for status change tracking
   • Auto-enrichment on spec create/update operations
   • Backward compatible with existing date fields
   • Location: src/frontmatter.ts

2. Velocity Metrics (100% complete)

   • Cycle time calculation (created → completed)
   • Lead time tracking (time in each status)
   • Throughput metrics (specs per week/month with trends)
   • WIP tracking (current and historical averages)
   • Location: src/utils/velocity.ts

3. Enhanced Stats Command (100% complete)

   • New simplified default view with insights
   • --timeline flag to add timeline section
   • --velocity flag for cycle time analysis
   • --full flag for comprehensive view
   • Smart insights and completion tracking
   • Location: src/commands/stats.ts

4. Board Command Enhancements (100% complete)

   • Integrated velocity summary
   • Shows cycle time, throughput, WIP
   • Project health indicators
   • Location: src/commands/board.ts

❌ Not Implemented

1. Dashboard Command - Decided against creating a separate command

   • Reason: Functionality better distributed across enhanced stats and board commands
   • Keeps CLI surface area simpler
   • No lean-spec default to dashboard (keeps help accessible)
   • No separate dashboard.ts file

2. Timeline Command Deprecation - Kept as-is

   • Originally planned to deprecate/merge into stats
   • Decided to keep both commands (serve different use cases)
   • No user confusion or breaking changes needed

Design Decisions

Why No Dashboard Command?

1. Simplicity: Enhanced stats and board provide comprehensive views without adding another command
2. Discoverability: lean-spec --help remains the entry point (not a dashboard)
3. Focused Commands: Each command has a clear, distinct purpose
4. No Feature Loss: All planned dashboard functionality available via stats/board

Why Keep Timeline Command?

1. Different Use Case: Timeline focuses on historical trends, stats on current metrics
2. No Redundancy: After enhancements, they serve complementary purposes
3. No Breaking Changes: Existing users rely on timeline command
4. User Choice: Some prefer dedicated timeline view vs stats --timeline

File Locations

src/
├── frontmatter.ts              # Timestamp enrichment logic
├── commands/
│   ├── stats.ts                # Enhanced with velocity, timeline, insights
│   ├── board.ts                # Enhanced with velocity summary
│   └── timeline.ts             # Kept unchanged
└── utils/
    ├── velocity.ts             # NEW: Velocity calculations
    ├── completion.ts           # NEW: Completion metrics
    ├── insights.ts             # NEW: Smart insights
    └── spec-stats.ts           # NEW: Stat aggregations

Success Metrics (All Achieved)

• ✅ Timestamp tracking functional and auto-enriching
• ✅ Velocity metrics calculating correctly (cycle time, throughput, WIP)
• ✅ Stats command provides comprehensive analytics
• ✅ Board command shows velocity summary
• ✅ No breaking changes for existing users
• ✅ Clean code separation (utilities in utils/)
• ✅ Comprehensive test coverage

What's in v0.2.0

Users get:

• Precise timestamp tracking for all specs
• Velocity metrics proving SDD effectiveness
• Enhanced lean-spec stats with multiple view modes
• Enhanced lean-spec board with velocity insights
• Smart insights highlighting what needs attention
• Completion tracking and project health metrics

Future Enhancements

Potential additions post-v0.2.0:

• Custom velocity targets via config
• More granular lead time tracking
• Velocity trend predictions
• Export capabilities (JSON, CSV, HTML)
• CI/CD integration for automated tracking
• Per-tag/per-assignee velocity breakdowns