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name: phasing description: Group slices into risk-optimized phases with timeline generation

Phasing Skill

Group implementation slices into phases based on combined risk and GTM scores, then generate a visual timeline.

When to Use

• During Ask mode Phase 2 (CONVERGE), after dependency-mapping and gtm-alignment
• Before transitioning to Plan mode
• To generate the final delivery timeline

Instructions

Phase 1: Gather Scores

Collect scores from previous skills:

Phase 2: Calculate Combined Score

CopyFinal Priority Score = Risk - (GTM x 0.5)

Lower score = ships earlier

Phase 3: Group into Phases

Apply grouping rules:

Grouping Constraints:

• Respect dependency order (check DSM matrix from dependency-mapping)
• Each phase should be independently deployable
• Each phase should serve at least one complete persona tier
• Keep phases to 3-5 days when possible

Phase 4: Generate Timeline (ASCII)

Use ASCII format grouped by stack. Show only dependencies with arrows. No dates or effort estimates.

ASCII Timeline Format:

CopyTIMELINE: [Feature Name]
═══════════════════════════════════════════════════════════

FRONTEND
├── [Slice name]
├── [Slice name] ───────────────┐
├── [Slice name] ───────────────┼──┐
└── [Slice name] ───────────────┘  │
                                   │
BACKEND                            │
└── [Slice name] ◄─────────────────┘
         │
         ▼
INFRASTRUCTURE
└── [Slice name]
         │
         ▼
INTEGRATION
├── [Slice name]
└── [Slice name]

═══════════════════════════════════════════════════════════
LEGEND:
├── = parallel (no dependency)
──► = dependency (must complete before)

Stack Grouping Rules:

Dependency Notation:

• ├── items in same section run in parallel
• ──► or ◄── arrows show blocking dependencies
• │ and ▼ show sequential flow between stacks

Phase 6: Document Checkpoints

Output Format

Output an executive summary (like DIVERGE), then the ASCII timeline. Do NOT show QA Contract details or Priority Matrix.

Copy## Value Analysis Complete

### Executive Summary

| Phase | Status | Key Output |
|-------|--------|------------|
| Scope | ✓ | Full ([N] validated wireframes from Phase 1) |
| State Machines | ✓ | [N] components, [N] states, [N] transitions |
| QA Contract | ✓ | [N] Gherkin (G#1-N), [N] acceptance (AC#1-N) |
| Dependencies | ✓ | [N] slices, [N] blockers, DSM matrix built |
| Design Reuse | ✓ | [N] existing components leveraged |
| Personas (Notion) | ✓ | Fetched [N] from DB, T1: [name], T2: [name] |
| GTM Strategy (Notion) | ✓ | Positioning: "[excerpt...]" |
| Persona Coverage | ✓ | Phase 1 serves [Tier], Phase 2 serves [Tiers] |
| Phasing | ✓ | [N] phases, [N] commits total |

### Proposed Timeline

[ASCII timeline with stacks and dependency arrows - no dates/effort]

### Checkpoints

| Phase | Validation | Owner |
|-------|------------|-------|
| 1 | [Validation] | [Team] |
| 2 | [Validation] | [Team] |
| 3 | [Validation] | [Team] |

Invocation

Invoke manually with "use phasing skill" or follow Ask mode Phase 2 (CONVERGE) which references this skill.

Related Skills

• dependency-mapping - Provides risk scores
• gtm-alignment - Provides GTM scores