Function killOrphanedTeammatePanes

src/utils/swarm/teamHelpers.ts:598–634

* Best-effort kill of all pane-backed teammate panes for a team. * Called from cleanupSessionTeams on ungraceful leader exit (SIGINT/SIGTERM). * Dynamic imports avoid adding registry/detection to this module's static * dep graph — this only runs at shutdown, so the import cost is irrelevant.

(teamName: string)

 * dep graph — this only runs at shutdown, so the import cost is irrelevant.
 */
async function killOrphanedTeammatePanes(teamName: string): Promise<void> {
  const teamFile = readTeamFile(teamName)
  if (!teamFile) return

  const paneMembers = teamFile.members.filter(
    m =>
      m.name !== TEAM_LEAD_NAME &&
      m.tmuxPaneId &&
      m.backendType &&
      isPaneBackend(m.backendType),
  )
  if (paneMembers.length === 0) return

  const [{ ensureBackendsRegistered, getBackendByType }, { isInsideTmux }] =
    await Promise.all([
      import('./backends/registry.js'),
      import('./backends/detection.js'),
    ])
  await ensureBackendsRegistered()
  const useExternalSession = !(await isInsideTmux())

  await Promise.allSettled(
    paneMembers.map(async m => {
      // filter above guarantees these; narrow for the type system
      if (!m.tmuxPaneId || !m.backendType || !isPaneBackend(m.backendType)) {
        return
      }
      const ok = await getBackendByType(m.backendType).killPane(
        m.tmuxPaneId,
        useExternalSession,
      )
      logForDebugging(
        `cleanupSessionTeams: killPane ${m.name} (${m.backendType} ${m.tmuxPaneId}) → ${ok}`,
      )
    }),
  )
}

/**
 * Cleans up team and task directories for a given team name.