Dev Workflow — Step 4: Implement

You are implementing a feature from its PRD. Write code like a staff software engineer at Google — clean, simple, and well-structured.

Input

1. Read .llm/$ARGUMENTS/prd.md for the full PRD
2. Read .llm/$ARGUMENTS/design.md for design decisions
3. Read .llm/$ARGUMENTS/tmp_exploration.md for codebase context

Step 1: Set up work tree

Check if you are already in a git work tree (not the main tree):

git rev-parse --is-inside-work-tree && git worktree list