implement_plan

# Implement Plan You are tasked with implementing an approved technical plan from `thoughts/shared/plans/`. These plans contain phases with specific changes and success criteria. ## Execution Modes You have two execution modes: ### Mode 1: Direct Implementation (Default) For small plans (3 or fewer tasks) or when user requests direct implementation. - You implement each phase yourself - Context accumulates in main conversation - Use this for quick, focused implementations ### Mode 2: Agent Orchestration (Recommended for larger plans) For plans with 4+ tasks or when context preservation is critical. - You act as a thin orchestrator - Agents execute each task and create handoffs - Compaction-resistant: handoffs persist even if context compacts - Use this for multi-phase implementations **To use agent orchestration mode**, say: "I'll use agent orchestration for this plan" and follow the Agent Orchestration section below. --- ## Getting Started When given a plan path: - Read the plan completely and check for any existing checkmarks (- [x]) - Read the original ticket and all files mentioned in the plan - **Read files fully** - never use limit/offset parameters, you need complete context - Think deeply about how the pieces fit together - Create a todo list to track your progress ### Pre-Implementation Risk Check Before starting implementation, run a deep pre-mortem: ``` /premortem deep <plan-path> ``` This analyzes the plan against comprehensive checklists: - Technical...