working-on-delta

Included with Lifetime

$97 forever

Load when executing spec/design/plan/implement commands for a specific delta. Provides templates, agent dispatch patterns, and workflow orchestration for per-delta work.

Design

What this skill does


# Working on Delta Skill

Orchestrates the per-delta workflow from spec through implementation.

## When to Load

Load this skill when executing:
- `/katachi:spec-delta <ID>`
- `/katachi:design-delta <ID>`
- `/katachi:plan-delta <ID>`
- `/katachi:implement-delta <ID>`
- `/katachi:review-delta <ID>`
- `/katachi:retrofit-design <ID>` (retrofit mode)

## Key References

**Guidance documents** (how to write each document type):
- `references/spec-template.md` - How to write delta specifications
- `references/design-template.md` - How to write design rationale
- `references/plan-template.md` - How to write implementation plans

**Document templates** (actual templates to follow):
- `references/delta-spec.md` - Delta specification template
- `references/delta-design.md` - Design document template
- `references/implementation-plan.md` - Implementation plan template

## Workflow

### 1. Pre-Check

Before starting any per-delta command:

```python
# Check delta exists in DELTAS.md
delta = get_delta(FEATURE_ID)
if not delta:
    error("Delta not found in DELTAS.md")

# Check dependencies are complete (for design/plan/implement)
if command in ["design", "plan", "implement"]:
    deps = get_dependencies(FEATURE_ID)
    incomplete = [d for d in deps if not is_complete(d)]
    if incomplete:
        warn(f"Dependencies not complete: {incomplete}")
```

### 2. Status Update (Start)

Update status when starting:

```bash
# spec-delta
python ${CLAUDE_PLUGIN_ROOT}/scripts/deltas.py status set FEATURE-ID "⧗ Spec"

# design-delta
python ${CLAUDE_PLUGIN_ROOT}/scripts/deltas.py status set FEATURE-ID "⧗ Design"

# plan-delta
python ${CLAUDE_PLUGIN_ROOT}/scripts/deltas.py status set FEATURE-ID "⧗ Plan"

# implement-delta
python ${CLAUDE_PLUGIN_ROOT}/scripts/deltas.py status set FEATURE-ID "⧗ Implementation"
```

### 3. Document Creation Workflow

For spec/design/plan commands:

1. **Research Phase (Silent)**
   - Read relevant context (DELTAS.md)
   - Read previous documents (spec before design, design before plan)
   - Read relevant ADRs and DES patterns
   - Research any libraries/APIs involved

2. **Draft Proposal**
   - Create complete document following template
   - Note uncertainties and assumptions
   - Base choices on research

3. **Present for Review**
   - Show complete document to user
   - Highlight uncertainties
   - Ask: "What needs adjustment?"

4. **Iterate**
   - Apply user corrections
   - Repeat until approved

5. **Validate**
   - Dispatch reviewer agent
   - Review findings with user
   - Apply accepted recommendations

6. **Finalize**
   - Write document to file
   - Update status

### 4. Agent Dispatch

Each command dispatches its reviewer agent:

| Command | Agent | Input |
|---------|-------|-------|
| spec-delta | `katachi:spec-reviewer` | Delta description, completed spec |
| design-delta | `katachi:design-reviewer` | Spec, design, ADR/DES summaries |
| plan-delta | `katachi:plan-reviewer` | Spec, design, plan, ADR/DES summaries |
| review-delta | `katachi:code-reviewer` | Spec, design, plan, code, ADR/DES |
| retrofit-design | `katachi:codebase-analyzer`, `katachi:design-reviewer` | Spec, implementation code, ADR/DES indexes |

Dispatch pattern:

```python
Task(
    subagent_type="katachi:spec-reviewer",
    prompt=f"""
Review this delta specification:

## Delta Description (from DELTAS.md)
{delta_description}

## Completed Spec
{spec_content}

Provide structured critique following your review criteria.
"""
)
```

### 5. Status Update (Complete)

Update status when completing:

```bash
# After successful completion
python ${CLAUDE_PLUGIN_ROOT}/scripts/deltas.py status set FEATURE-ID "✓ Spec"
python ${CLAUDE_PLUGIN_ROOT}/scripts/deltas.py status set FEATURE-ID "✓ Design"
python ${CLAUDE_PLUGIN_ROOT}/scripts/deltas.py status set FEATURE-ID "✓ Plan"
python ${CLAUDE_PLUGIN_ROOT}/scripts/deltas.py status set FEATURE-ID "✓ Implementation"
```

## Command Summary

| Command | Description | Reviewer |
|---------|-------------|----------|
| `spec-delta` | Write delta specification (requirements, acceptance criteria) | `spec-reviewer` |
| `design-delta` | Write delta design (approach, rationale, key decisions) | `design-reviewer` |
| `plan-delta` | Write implementation plan (batches with steps and context) | `plan-reviewer` |
| `implement-delta` | Implement all batches autonomously, then present for user review | — |
| `review-delta` | Review-loop: dispatch code-reviewer, fix issues, repeat until PASS | `code-reviewer` |
| `retrofit-design` | Retrofit existing code with design documentation | `codebase-analyzer`, `design-reviewer` |

Files: 14

Size: 59.7 KB

Complexity: 62/100

Category: Design

Source: https://github.com/asermax/claude-plugins/tree/main/katachi/skills/working-on-delta

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