reflect
After-action learning loop for a repo. Reads contribute's plan artifacts, git history, forge PR lifecycle (`gh`/`az`), CI results, and observe's baseline pages, then writes retro and playbook pages into agent-wiki. Use when: user says "retro"/"post-mortem"/"after-action"/"what did we learn"/"session summary"/"promote this to a playbook", or when a PR just merged on the current branch, contribute ran >=2 iterate rounds, or contribute tripped a scope cap — in those three cases suggest reflect and wait for confirmation (at most once per scope per session). Distinct from agent-wiki's `ingest`: reflect captures after-the-fact calibration against a plan, not in-the-moment codebase discoveries.