SDD Domain Skill (Orchestrator)

Entry point: /​faion-net — invoke this skill for automatic routing to the appropriate domain.

SDD Domain Skill (Orchestrator)

Communication: User's language. Docs/​code: English.

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Philosophy

"Intent is the source of truth" - specification is the main artifact, code is just its implementation.

No Time Estimates: Use complexity levels (Low/​Medium/​High) and token estimates (~Xk) instead.

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Context Discovery

Auto-Investigation

Check for existing SDD structure:

Read existing artifacts:

• constitution.md for constraints and standards
• Any existing specs/​designs for patterns
• memory/​patterns.md for learned patterns

Discovery Questions

Q1: SDD Phase

question: "What phase of SDD workflow are you in?"
header: "Phase"
multiSelect: false
options:
  - label: "Starting new project (need constitution)"
    description: "Bootstrap SDD structure"
  - label: "Planning a feature (spec/​design)"
    description: "Write spec, design, impl-plan"
  - label: "Ready to execute (have tasks)"
    description: "Implement planned tasks"
  - label: "Reviewing/​improving"
    description: "Quality gates, code review"

Routing:

• "Starting" → constitution-guidelines, project bootstrap
• "Planning" → Skill(faion-sdd-planning)
• "Execute" → Skill(faion-sdd-execution) or Skill(faion-feature-executor)
• "Reviewing" → Skill(faion-sdd-execution) → quality-gates

Q2: Document Type (if planning)

question: "What document do you need to create?"
header: "Document"
multiSelect: false
options:
  - label: "Specification (what to build)"
    description: "Requirements, success criteria"
  - label: "Design document (how to build)"
    description: "Architecture, API contracts"
  - label: "Implementation plan (tasks)"
    description: "Task breakdown, dependencies"
  - label: "All of the above"
    description: "Full planning cycle"

Q3: Feature Complexity

question: "How complex is the feature?"
header: "Complexity"
multiSelect: false
options:
  - label: "Low (< 50k tokens)"
    description: "Single task, straightforward"
  - label: "Medium (50-150k tokens)"
    description: "Multiple tasks, some complexity"
  - label: "High (> 150k tokens)"
    description: "Many tasks, architectural changes"

Context impact:

• "Low" → Single task, less formal docs
• "Medium" → Standard SDD workflow
• "High" → Detailed spec, parallel execution

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Architecture

This skill orchestrates 2 sub-skills:

Total: 48 methodologies

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Workflow Overview

CONSTITUTION → SPEC → DESIGN → IMPL-PLAN → TASKS → EXECUTE → DONE
      |          |        |          |          |         |        |
   project    feature  technical   100k rule   atomic   agent    learn
   principles  intent   approach   compliance   units  execution reflect

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When to Use Which Sub-Skill

Use faion-sdd-planning for:

• Writing specifications (WHAT + WHY)
• Creating design documents (HOW)
• Breaking down implementation plans (TASKS)
• Task creation from impl-plans
• Template usage
• Workflow navigation

Use faion-sdd-execution for:

• Task execution workflows
• Quality gate validation (L1-L6)
• Code review cycles
• Reflexion learning (PDCA)
• Pattern/​mistake memory management
• Context management strategies
• Task parallelization analysis

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Quick Decision Tree

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Directory Structure

.aidocs/
├── constitution.md                    # Project principles
├── contracts.md                       # API contracts
├── roadmap.md                         # Milestones
└── features/
    ├── backlog/                       # Waiting for grooming
    ├── todo/                          # Ready for execution
    ├── in-progress/                   # Being worked on
    └── done/                          # Completed
        └── {NN}-{feature}/
            ├── spec.md                # WHAT and WHY
            ├── design.md              # HOW
            ├── implementation-plan.md # Tasks breakdown
            └── tasks/
                ├── backlog/
                ├── todo/              # Ready tasks
                ├── in-progress/       # Executing
                └── done/              # Completed

Lifecycle: backlog/ → todo/ → in-progress/ → done/

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Agents

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Memory Storage

Location: Project-local .aidocs/​memory/ (not global)

.aidocs/​memory/
├── patterns.md           # Learned patterns
├── mistakes.md           # Errors and solutions
├── decisions.md          # Key decisions
└── session.md            # Session state

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Related Skills

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faion-sdd v4.0 (Orchestrator) Sub-skills: faion-sdd-planning (28) + faion-sdd-execution (20)