End-to-end GitHub issue workflow, whole or slice by slice with one commit each: analyze the issue, plan and implement, verify with available tests/build/lint and an optional live observation, simplify, audit the tests it added, attack the change with parallel adversarial reviewers and fix what they find, trim comments and artifacts, then choose a push / PR / merge endgame — holding the merge while Copilot and other automated reviewers report, and answering and resolving their threads. The lifecycle's git and GitHub writes are delegated to `issue-flow`, the review threads to `pr-review`.
