fix(hands,jobs): watchdog window reads the room tail, not the pending cursor

tests/test_vibegram.py

@@ -1,10 +1,12 @@
+from urllib.parse import parse_qsl, urlsplit
+
 import pytest
 from beaver_gateway.mcp.types import McpServer
 from beaver_gateway.mcp.wrap import build_python_tool_server
 from fastmcp import Client
 from fastmcp.exceptions import ToolError
 
-from beaver_agent.hands.vibegram import Vibegram, _cards, _event, _work
+from beaver_agent.hands.vibegram import PAGE, Vibegram, _cards, _event, _work
 
 
 def test_events_render_and_unknown_kinds_are_skipped():
@@ -64,3 +66,64 @@ async def test_tool_schema_lists_actions_and_needs_text_for_send():
         )
         with pytest.raises(ToolError, match="text"):
             await client.call_tool("vibegram", {"action": "send"})
+
+
+def _raw(eid, kind, body=None):
+    return {
+        "id": eid,
+        "roomId": "r",
+        "nick": "claude-kai",
+        "kind": kind,
+        "payload": {} if body is None else {"body": body},
+        "createdAt": "2026-09-23T05:00:02.000Z",
+    }
+
+
+def _hub(monkeypatch, events):
+    calls = []
+
+    async def call(self, method, path, body):
+        calls.append(path)
+        if path == "/api/room":
+            return {"room": {"id": "r", "name": "kai-rem-watch", "viewToken": "v 1"}}
+        query = dict(parse_qsl(urlsplit(path).query))
+        assert query["view"] == "v 1"  # ключ комнаты уезжает экранированным
+        after = int(query.get("after", 0))
+        return {"events": [e for e in events if e["id"] > after][:PAGE]}
+
+    monkeypatch.setattr(Vibegram, "_call", call)
+    return calls, Vibegram(hub="http://hub", token="t", nick="beaver-test")
+
+
+async def test_window_pages_forward_to_the_end_and_drops_joins(monkeypatch):
+    # 520 событий комнаты - три страницы по 200; join/leave в окно не идут
+    events = [
+        _raw(i, "message" if i % 4 else "agent_leave", f"строка {i}")
+        for i in range(1, 521)
+    ]
+    calls, room = _hub(monkeypatch, events)
+
+    window = await room.window(25)
+
+    assert window.full
+    assert len(window.events) == 25
+    assert window.events[-1].text.endswith("строка 519")
+    assert all("вошёл" not in e.text and "вышел" not in e.text for e in window.events)
+    assert calls.count("/api/room") == 1
+    assert sum(p.startswith("/api/state") for p in calls) == 3
+    assert "view=v%201" in calls[1]
+    assert not any("pending" in p for p in calls)  # курсор сторожу не окно
+
+
+async def test_window_that_ran_out_of_pages_says_it_is_not_full(monkeypatch):
+    events = [_raw(i, "message", f"строка {i}") for i in range(1, 521)]
+    _, room = _hub(monkeypatch, events)
+
+    assert not (await room.window(25, pages=2)).full
+    assert (await room.window(25, pages=3)).full
+
+
+async def test_window_of_an_empty_room_is_full_and_empty(monkeypatch):
+    _, room = _hub(monkeypatch, [])
+    window = await room.window(25)
+    assert window.full and window.events == []