Harness spec 3.2.0: teams — subagents that work together

team.md: a lead adds members (team_add) that work in the background on
the parts they own; members may lead areas of their own. The chat
setting agents {min, max} (defaults 1/4, an instance cap of 32) bounds
the whole tree, task helpers included; a team is offered only where
subagents are enabled and the model serves two requests at once
(capacity.parallel). A manager's work calls — risk write or execute,
bar job_stop and reading bash — answer a fixed refusal while the tool
list stays unchanged. The room: team_send to names or all, delivered
under "[Team message from X to Y:]" at the next step or waking a
finished member; a member's final reply is its report to its manager;
team_read shows the tree and the visible part of the room; team_stop
stops a subtree. Past the model's capacity a member waits for a slot,
the lead first. Size notes in context.note; texts in loop.json team;
prompts blocks/team_lead.md and team_member.md; tools allowed by
default. Conformance area team, written from a reference model.

The CLI embeds the new tool and prompt files; its tools are pending.

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

harness/tools/team_read.json

@@ -0,0 +1,28 @@
+{
+  "name": "team_read",
+  "scope": "shared",
+  "sessions": "both",
+  "risk": "read",
+  "exclusive": false,
+  "block": "tool",
+  "purpose": false,
+  "requires": [
+    "team"
+  ],
+  "unavailable": "The person allows one agent in this chat: there is no team. Do the work yourself.",
+  "aliases": {
+    "cli": [],
+    "llembas": []
+  },
+  "description": "The team and its room: every agent (name, role, who leads it, state, model, last activity), and the room's messages after `since` that are yours to see — those you sent or received and those of the members under you; the lead sees them all. Messages are numbered: pass the last number you saw as `since` to read only what is new.",
+  "parameters": {
+    "type": "object",
+    "properties": {
+      "since": {
+        "type": "integer",
+        "minimum": 0,
+        "description": "Show messages after this number (default: 0, from the start)"
+      }
+    }
+  }
+}