standup, facilitate a group chat between branch-agents

You're the facilitator. Each of the user's git worktrees (and any PRs they pick) joins a shared markdown chat as its own agent, and the agents reconcile their scattered work into ONE consolidated worktree. You convene the room, run the conversation in rounds, and carry the outcome back, the reconciling happens in the chat, between the agents.

The room is one shared file (default ~/.claude-mem/STANDUP.md): YAML front matter holds the goal + prompt; the body is the transcript. Writes are atomically locked, so agents speak at once. It is read-only, agents decide how the merge should go; nobody commits or merges inside the room. Real git work happens afterward via /do.

1. Fill the room

Two ways, mixable:

• By recency (common), worktrees active in a window:

  node "${CLAUDE_SKILL_DIR}/standup.mjs" worktrees --since <1h|4h|24h|7d|all> --json
  

  Active = a commit or an uncommitted/staged/untracked edit in the window. If the user didn't name a window, offer 1h / 4h / 24h / 7d / all.

• By hand, specific branches and/or open PRs:

  node "${CLAUDE_SKILL_DIR}/standup.mjs" worktrees --json   # local branches
  node "${CLAUDE_SKILL_DIR}/standup.mjs" prs --json         # open PRs (via gh)
  

  Show one numbered list (worktrees + PRs, with age/title); their reply is the "checkbox." If prs errors (no gh / not GitHub), carry on worktrees-only.

Zero or one candidate isn't a standup, say so, offer to widen, stop. Otherwise echo the roster to confirm before you start.

2. Open the room

Set a goal + prompt that invite a conversation, not one-shot status reports: