/build Execute plan tasks via subagents, validate, report. Announce: "Starting /build — executing plan with subagent dispatch." Prerequisites - Plan approved by (Step 4), OR one-sentence scope / hotfix (no plan) - Working in a linked worktree (not primary) With Plan 1. Load Read . Extract tasks into ordered batches: - Tasks under the same step or marked parallel = one batch - Tasks with dependencies on prior tasks = separate sequential batch - Note file paths, test expectations, and acceptance criteria per task 2. Execute Batches Batches run sequentially. Tasks within a batch dispatch in para…