Harness spec 3.4.0: progress phases, and subagents v2 — the main agent and its tree

progress.md: thirteen fixed phases (queued … failed), each { phase, since, data },
their texts as shared i18n keys (loop.json progress), one line every client draws,
sent beside the old status text in /api/v2 and over the link (capability progress).

subagents.md §5–§13 (supersedes team.md where they differ): only the main agent
adds, assigns, replaces, stops and decides; sub-managers direct those placed under
them; ids, positions, parents; Min above 1 opens slots; permissions inherited and
never widened, request options decided by the main agent, what nobody in the tree
can allow goes to the person; team_finish, findings, running out of context;
transcripts read-only; the tree over the link (capability tree). New tools
team_whoami, team_finish, team_findings, team_request, team_decide, team_assign,
team_replace. Conformance: progress, delegation; team updated.

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

harness/tools/team_findings.json

@@ -0,0 +1,41 @@
+{
+  "name": "team_findings",
+  "scope": "shared",
+  "sessions": "both",
+  "risk": "interact",
+  "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": "Findings kept beyond your context: `write` adds one (a fact, a result, where something is) to yours; `read` shows yours, or with `of` those of a subagent under you (the main agent: anyone's), ended ones included. Write as you go: when your context fills you have one turn left, and your findings are what the next agent starts from.",
+  "parameters": {
+    "type": "object",
+    "properties": {
+      "action": {
+        "type": "string",
+        "enum": [
+          "write",
+          "read"
+        ]
+      },
+      "text": {
+        "type": "string",
+        "description": "write: the finding"
+      },
+      "of": {
+        "type": "string",
+        "description": "read: a name or an id (default: yours)"
+      }
+    },
+    "required": [
+      "action"
+    ]
+  }
+}