diff --git a/files/claude_agents.py b/files/claude_agents.py
index 6b1e86c..f47a22e 100644
--- a/files/claude_agents.py
+++ b/files/claude_agents.py
@@ -25,7 +25,9 @@ import json
 import os
 import re
 import shutil
+import socket
 import subprocess
+import sys
 import time
 import urllib.error
 import urllib.parse
@@ -1383,21 +1385,66 @@ async def handle(reader, writer):
         writer.close()
 
 
-async def main(connection):
+# ---------- запуск ----------
+# Два режима одного файла: служба launchd (--headless) держит порт и всё считает,
+# скрипт AutoLaunch в iTerm2 только показывает её страницу в Toolbelt.
+
+SERVICE_LABEL = "com.andrey.claude-agents"  # метка LaunchAgent и идентификатор web view
+
+
+async def serve():
+    """Сервер панели без iTerm2: страница, дерево сессий, лимиты и баланс. Работает до отмены."""
     global _server
     load_config()
     _server = await asyncio.start_server(handle, "127.0.0.1", PORT)
-    asyncio.create_task(refresher())
-    asyncio.create_task(usage_poller())
-    asyncio.create_task(balance_poller())
+    tasks = [asyncio.create_task(c) for c in (refresher(), usage_poller(), balance_poller())]
+    try:
+        async with _server:
+            await _server.serve_forever()
+    finally:
+        for t in tasks:
+            t.cancel()
+
+
+def port_alive(port, host="127.0.0.1", timeout=0.5) -> bool:
+    try:
+        with socket.create_connection((host, port), timeout=timeout):
+            return True
+    except OSError:
+        return False
+
+
+def kickstart_service():
+    """Просит launchd запустить службу панели, если она не запущена."""
+    try:
+        subprocess.run(["launchctl", "kickstart", f"gui/{os.getuid()}/{SERVICE_LABEL}"],
+                       capture_output=True, timeout=10)
+    except Exception:
+        pass
+
+
+async def register_toolbelt(connection):
+    """Скрипт AutoLaunch: регистрирует web view со страницей службы; свой сервер не поднимает."""
+    load_config()
+    if not port_alive(PORT):
+        kickstart_service()
     await iterm2.tool.async_register_web_view_tool(
         connection,
         display_name="Claude",
-        identifier="com.andrey.claude-agents",
+        identifier=SERVICE_LABEL,
         reveal_if_already_registered=False,
         url=f"http://127.0.0.1:{PORT}/",
     )
 
 
-if __name__ == "__main__" and iterm2 is not None:
-    iterm2.run_forever(main)
+def run(argv):
+    if "--headless" in argv:
+        asyncio.run(serve())
+    elif iterm2 is not None:
+        iterm2.run_forever(register_toolbelt)
+    else:
+        raise SystemExit("нужен iTerm2 или флаг --headless")
+
+
+if __name__ == "__main__":
+    run(sys.argv[1:])
diff --git a/tests/test_service.py b/tests/test_service.py
new file mode 100644
index 0000000..70a5127
--- /dev/null
+++ b/tests/test_service.py
@@ -0,0 +1,167 @@
+import asyncio
+import json
+import os
+import socket
+import sys
+import types
+import unittest
+import urllib.request
+from unittest import mock
+
+sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", "files"))
+import claude_agents as ca  # noqa: E402
+
+
+def free_port():
+    with socket.socket() as s:
+        s.bind(("127.0.0.1", 0))
+        return s.getsockname()[1]
+
+
+def http_get(port, path):
+    with urllib.request.urlopen(f"http://127.0.0.1:{port}{path}", timeout=3) as r:
+        return r.status, r.read().decode("utf-8")
+
+
+class PortAlive(unittest.TestCase):
+    def test_port_alive(self):
+        s = socket.socket()
+        s.bind(("127.0.0.1", 0))
+        s.listen()
+        port = s.getsockname()[1]
+        self.assertTrue(ca.port_alive(port))
+        s.close()
+        self.assertFalse(ca.port_alive(port))
+
+
+class Serve(unittest.TestCase):
+    def setUp(self):
+        self.port = free_port()
+        patches = [
+            mock.patch.object(ca, "PORT", self.port),
+            mock.patch.object(ca, "CONFIG_PATH", "/nonexistent/claude-agents/config.json"),
+            mock.patch.object(ca, "load_sessions", lambda: []),
+            mock.patch.object(ca, "fetch_usage", lambda: {}),
+            mock.patch.object(ca, "fetch_balance", lambda: ({}, "test")),
+        ]
+        for p in patches:
+            p.start()
+            self.addCleanup(p.stop)
+
+    async def _with_server(self, check):
+        task = asyncio.create_task(ca.serve())
+        loop = asyncio.get_running_loop()
+        try:
+            for _ in range(60):
+                if ca.port_alive(self.port):
+                    break
+                await asyncio.sleep(0.05)
+            return await check(loop)
+        finally:
+            task.cancel()
+            try:
+                await task
+            except asyncio.CancelledError:
+                pass
+
+    def test_serve_answers(self):
+        async def check(loop):
+            status, body = await loop.run_in_executor(None, http_get, self.port, "/")
+            self.assertEqual(status, 200)
+            self.assertIn('<div id="root">', body)
+            status, raw = await loop.run_in_executor(None, http_get, self.port, "/raw")
+            self.assertIn("tree", json.loads(raw))
+        asyncio.run(self._with_server(check))
+        self.assertFalse(ca.port_alive(self.port))
+
+    def test_serve_survives_usage_failure(self):
+        def no_token():
+            raise FileNotFoundError("no credentials")
+
+        async def check(loop):
+            body = ""
+            for _ in range(60):
+                _, body = await loop.run_in_executor(None, http_get, self.port, "/limits")
+                if "Не найден токен Claude Code" in body:
+                    break
+                await asyncio.sleep(0.05)
+            self.assertIn("Не найден токен Claude Code", body)
+            status, _ = await loop.run_in_executor(None, http_get, self.port, "/")
+            self.assertEqual(status, 200)
+        with mock.patch.object(ca, "fetch_usage", no_token):
+            asyncio.run(self._with_server(check))
+
+    def test_serve_busy_port_raises(self):
+        s = socket.socket()
+        s.bind(("127.0.0.1", self.port))
+        s.listen()
+        self.addCleanup(s.close)
+        with self.assertRaises(OSError):
+            asyncio.run(ca.serve())
+
+
+class RegisterToolbelt(unittest.TestCase):
+    def setUp(self):
+        self.registered = []
+        self.kicks = []
+
+        async def register(connection, **kwargs):
+            self.registered.append(kwargs)
+
+        fake = types.SimpleNamespace(tool=types.SimpleNamespace(async_register_web_view_tool=register))
+        patches = [
+            mock.patch.object(ca, "iterm2", fake),
+            mock.patch.object(ca, "PORT", 8766),
+            mock.patch.object(ca, "CONFIG_PATH", "/nonexistent/claude-agents/config.json"),
+            mock.patch.object(ca, "kickstart_service", lambda: self.kicks.append(1)),
+        ]
+        for p in patches:
+            p.start()
+            self.addCleanup(p.stop)
+
+    def assert_registered(self):
+        self.assertEqual(self.registered, [{
+            "display_name": "Claude", "identifier": "com.andrey.claude-agents",
+            "reveal_if_already_registered": False, "url": "http://127.0.0.1:8766/"}])
+
+    def test_register_toolbelt_kickstarts_when_port_dead(self):
+        with mock.patch.object(ca, "port_alive", lambda *a, **k: False):
+            asyncio.run(ca.register_toolbelt(object()))
+        self.assertEqual(self.kicks, [1])
+        self.assert_registered()
+
+    def test_register_toolbelt_skips_kickstart_when_alive(self):
+        with mock.patch.object(ca, "port_alive", lambda *a, **k: True):
+            asyncio.run(ca.register_toolbelt(object()))
+        self.assertEqual(self.kicks, [])
+        self.assert_registered()
+
+
+class Kickstart(unittest.TestCase):
+    def test_kickstart_command(self):
+        with mock.patch.object(ca.subprocess, "run") as run:
+            ca.kickstart_service()
+        self.assertEqual(run.call_args.args[0],
+                         ["launchctl", "kickstart", f"gui/{os.getuid()}/com.andrey.claude-agents"])
+        with mock.patch.object(ca.subprocess, "run", side_effect=OSError("no launchctl")):
+            ca.kickstart_service()  # не бросает
+
+
+class Run(unittest.TestCase):
+    def test_run_headless_calls_serve(self):
+        called = []
+
+        async def fake_serve():
+            called.append(1)
+        with mock.patch.object(ca, "serve", fake_serve):
+            ca.run(["--headless"])
+        self.assertEqual(called, [1])
+
+    def test_run_without_iterm_exits(self):
+        with mock.patch.object(ca, "iterm2", None):
+            with self.assertRaises(SystemExit):
+                ca.run([])
+
+
+if __name__ == "__main__":
+    unittest.main()