When one task call spawns two or more live siblings with spawn capacity
and IRC enabled, TaskTool.execute appends a coordinate-via-irc
suggestion, composed onto the specialization advisory through the same
seam. Tighten the subagent COOP section and irc tool prompt so guidance
spans discovery (list who/what), coordination (message before
overlapping edits), and follow-up (replyTo/await) instead of only
assuming agents resolve collisions on their own.
Refs #2471
Op: extend
When a spawner with remaining depth capacity spawns generic role-less
workers (a task/quick_task spawn without a `role`, or the same agent
cloned >=2x all without roles), TaskTool.execute appends a non-blocking
advisory steering it toward tailored specialists. Gated on DepthCapacity
so a leaf at max recursion is never nudged; the task-tool depth gate is
extracted into a shared `canSpawnAtDepth` helper reused by both the tool
gate and the advisory.
Refs #2469
Op: extend
metaphorics