p2a-dev-executionlisted

# Plan2Agent Dev Execution Implement one approved ready Plan2Agent task, or a bounded batch from one ready snapshot, as real code changes in its target project. Record every task as its own run and hand back verification and integration results. This skill is for execution only: it does not author planning artifacts, change gates, or broaden any approved task scope. ## When to use Use this skill only when all of these conditions are true before starting: - Every selected task is exposed by the same `p2a_tasks ready` snapshot. - The Gate B spec is approved and `open_decisions` is empty. - The Gate D review has no blockers. - Every selected task has acceptance criteria. - The user explicitly asks for implementation execution. If any condition is missing, stop and report the missing prerequisite instead of implementing. Use single-task mode unless the user asks to execute multiple ready tasks, or explicitly accepts a proposed bounded batch. Batch mode is supervised orchestration inside one foreground session, not permission to start a headless scheduler. ## Inputs Use these inputs: - Artifact root, or `--graph` when operating from an explicit task graph. - One ready task id, or an exact list selected from one ready snapshot. - `agent-tool`, usually `codex`. - Optional existing run id per task. - Optional maximum batch concurrency, capped by the foreground provider's available write-capable subagent slots. - For batch mode, a user-approved canonical integration branch/wo