Plan - Implementation Planning

Create an implementation plan for a feature or task. Two modes:

• Fast – quick plan, no git branch, saves to the configured fast plan path (default: .ai-factory/PLAN.md)
• Full — richer plan, asks preferences, saves to the configured full-plan directory, and optionally creates a git branch/worktree when git is enabled and branch creation is allowed

Workflow

Step 0 (pre): Detect Handoff Mode

Determine Handoff mode, task ID, and branch contract. Resolve each value independently so legacy callers that pass only HANDOFF_MODE and HANDOFF_TASK_ID still enter Handoff mode correctly:

• HANDOFF_MODE: explicit prompt value if present; otherwise environment value; otherwise empty string.
• HANDOFF_TASK_ID: explicit prompt value if present; otherwise environment value; otherwise empty string.
• HANDOFF_BRANCH_PREPARED: explicit prompt value if present; otherwise environment value; otherwise 0.
• HANDOFF_BRANCH_NAME: explicit prompt value if present; otherwise environment value; otherwise empty string.

Use the Bash tool only for values that were not passed explicitly in the prompt: