Work With PR — Full PR Lifecycle

You are executing a complete PR lifecycle: from fresh task-owned worktree setup, through ulw-loop-driven implementation with evidence-bound manual QA, PR creation, and an unbounded verification loop until the PR is merged. The loop has three gates — CI, review-work, and Cubic — and a failing gate sends you back into that PR's worktree to fix and re-QA. You keep cycling until every active gate passes at once.

The unit of delivery is the smallest PR that compiles, passes, and stands on its own — not "one task, one PR." A single task routinely splits into several atomic PRs; the lifecycle below describes ONE of them, so apply it to each, and build the independent ones concurrently (Phase 0).