| name | donny-map-codebase |
| description | Analyze an existing codebase with parallel mapper agents to produce seven structured .planning/codebase/ documents (stack, architecture, structure, conventions, testing, integrations, concerns). Use on a brownfield project before planning, or to refresh the codebase map after major changes; pass an optional focus area. |
| argument-hint | [optional: specific area to map, e.g., 'api' or 'auth'] |
| allowed-tools | ["Read","Bash","Glob","Grep","Write","Task"] |
Analyze existing codebase using parallel donny-codebase-mapper agents to produce structured codebase documents.
Each mapper agent explores a focus area and writes documents directly to .planning/codebase/. The orchestrator only receives confirmations, keeping context usage minimal.
Output: .planning/codebase/ folder with 7 structured documents about the codebase state.
<execution_context>
@~/.claude/donny/workflows/map-codebase.md
</execution_context>
Focus area: $ARGUMENTS (optional - if provided, tells agents to focus on specific subsystem)
Load project state if exists:
Check for .planning/STATE.md - loads context if project already initialized
This command can run:
- Before /donny-init (brownfield codebases) - creates codebase map first
- After /donny-init (greenfield codebases) - updates codebase map as code evolves
- Anytime to refresh codebase understanding
<when_to_use>
Use map-codebase for:
- Brownfield projects before initialization (understand existing code first)
- Refreshing codebase map after significant changes
- Onboarding to an unfamiliar codebase
- Before major refactoring (understand current state)
- When STATE.md references outdated codebase info
Skip map-codebase for:
- Greenfield projects with no code yet (nothing to map)
- Trivial codebases (<5 files)
</when_to_use>
1. Check if .planning/codebase/ already exists (offer to refresh or skip)
2. Create .planning/codebase/ directory structure
3. Spawn 4 parallel donny-codebase-mapper agents:
- Agent 1: tech focus -> writes STACK.md, INTEGRATIONS.md
- Agent 2: arch focus -> writes ARCHITECTURE.md, STRUCTURE.md
- Agent 3: quality focus -> writes CONVENTIONS.md, TESTING.md
- Agent 4: concerns focus -> writes CONCERNS.md
4. Wait for agents to complete, collect confirmations (NOT document contents)
5. Verify all 7 documents exist with line counts
6. Commit codebase map
7. Offer next steps (typically: /donny-init or /donny-plan-phase)
<success_criteria>
