Teams in the CLI (harness spec 3.2.0, team.md)

The four team tools (tool/team_tools.ts) on the rules of team/team.ts,
driven from real turns by team/runtime.ts:

- Members run on the subagent job machinery (app.ts spawn with `member`):
  background, unattended, their own prompt from blocks/team_member.md
  (the whole of team_lead.md for one with lead: true), team_send and
  team_read (team_add and team_stop for one that leads). Not jobs to the
  model: job_list and the job_* tools skip them; a client over the link
  still sees them as subagent jobs named "<name>: <role>".
- The room: messages and reports with their marks, delivered at the next
  step boundary or waking a finished member or the idle lead; report
  posts to the manager.
- A manager's work calls answer the refusal before the permission check,
  by risk class (an MCP tool by its readOnlyHint); the tool list is
  unchanged. job_stop and reading bash stay.
- Slots: the lead waits for one before its turn (Esc stops the wait);
  members wait in order; task helpers in a team count toward the size
  and hold a slot; job_send restarting a helper is refused when full.
- The offer is decided with the prompt and kept with it: a resumed
  session takes it from its kept tool list.
- The size: agents.min/max settings, refused outside 1 <= min <= max <=
  cap, kept across /new and resume; said in a note on the first message,
  after a change, after a compaction and a rewind.
- TUI: /team (tree and room, size, stop a member, dialogs for both), an
  "agents" row beside the effort in /effort, "team n/max" in the status
  bar. /team works over ACP too.

tests/team.test.ts runs a lead, a member and its report through the app.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/tool/registry.ts

@@ -11,6 +11,7 @@ import { planSubmitTool } from "./plan_submit.ts"
 import { planUpdateTool } from "./plan_update.ts"
 import { planWriteTool } from "./plan_write.ts"
 import { taskTool } from "./task.ts"
+import { teamAddTool, teamReadTool, teamSendTool, teamStopTool } from "./team_tools.ts"
 import { decisionsTool, tasksTool } from "./project_tools.ts"
 import { webFetchTool, webSearchTool } from "./web.ts"
 import { memoryTool } from "./memory.ts"
@@ -40,6 +41,11 @@ export const BUILTIN_TOOLS: Tool[] = [
   webSearchTool,
   webFetchTool,
   taskTool,
+  // Spec 3.2.0: a team (team.md), offered where the model serves two requests at once.
+  teamAddTool,
+  teamSendTool,
+  teamReadTool,
+  teamStopTool,
   planWriteTool,
   planUpdateTool,
   tasksTool,