fix: preserve live tasks during daemon recovery

.env.example

@@ -50,6 +50,8 @@ ARTEMIS_CHECKPOINT_TIMEOUT_SECONDS=180
 ARTEMIS_SETTLEMENT_TIMEOUT_SECONDS=120
 ARTEMIS_CREDENTIAL_TIMEOUT_SECONDS=12
 ARTEMIS_MODEL_CACHE_TTL_SECONDS=10
+# 守护服务轻量探测超时；探测超时且端口仍占用时，不重复启动服务。
+ARTEMIS_DAEMON_PROBE_TIMEOUT_SECONDS=2
 # 模型重试耗尽后的暂停等待上限（秒）；0 表示无限等待
 LLM_PAUSE_TIMEOUT_SECONDS=900
 

apps/admin_console/server.py

@@ -24,6 +24,7 @@ import os
 from pathlib import Path
 import secrets
 import signal
+import socket
 import sys
 from types import FrameType
 
@@ -421,6 +422,14 @@ queue_goals = state.queue_goals
 class ArtemisUvicornServer(uvicorn.Server):
     """Notify application streams before Uvicorn waits for them to close."""
 
+    async def startup(self, sockets: list[socket.socket] | None = None) -> None:
+        # Reload workers start in a fresh interpreter; restore the actual bind
+        # address there before lifespan publishes runtime metadata.
+        state.host = self.config.host
+        state.port = self.config.port
+        app.state.uvicorn_server = self
+        await super().startup(sockets=sockets)
+
     @staticmethod
     def _task_is_active() -> bool:
         """Check task state without doing process I/O from a signal handler."""
@@ -470,31 +479,40 @@ class ArtemisUvicornServer(uvicorn.Server):
 
 def run_ui_server(host: str, port: int, reload: bool = False) -> None:
     """Run the UI server with bounded, signal-aware graceful shutdown."""
+    # Reserve a listening socket before publishing metadata or running lifespan.
+    # Uvicorn normally runs application startup *before* binding its port; a
+    # duplicate daemon would otherwise recover jobs owned by the real server.
+    family = socket.AF_INET6 if ":" in host else socket.AF_INET
+    try:
+        listener = socket.create_server((host, port), family=family)
+    except OSError as exc:
+        print(f"无法启动服务：{host}:{port} 端口不可用（{exc}）。现有服务和任务保持不变。")
+        raise SystemExit(1) from exc
+    listener.set_inheritable(True)
+    port = listener.getsockname()[1]
     state.host = host
     state.port = port
-    write_server_info(port=port, host=host, lifecycle_token=LIFECYCLE_TOKEN)
 
     try:
-        if reload:
-            uvicorn.run(
-                "apps.admin_console.server:app",
+        config = uvicorn.Config(
+            "apps.admin_console.server:app" if reload else app,
             host=host,
             port=port,
-                reload=True,
+            reload=reload,
             timeout_graceful_shutdown=5,
         )
+        if reload:
+            from uvicorn.supervisors import ChangeReload
+
+            server = ArtemisUvicornServer(config)
+            ChangeReload(config, target=server.run, sockets=[listener]).run()
             return
 
-        config = uvicorn.Config(
-            app,
-            host=host,
-            port=port,
-            timeout_graceful_shutdown=5,
-        )
         server = ArtemisUvicornServer(config)
         app.state.uvicorn_server = server
-        server.run()
+        server.run(sockets=[listener])
     finally:
+        listener.close()
         app.state.uvicorn_server = None
         clear_server_info(port=port, lifecycle_token=LIFECYCLE_TOKEN)
 

apps/admin_console/services/automation_service.py

@@ -8,7 +8,7 @@ import time
 from uuid import UUID
 
 from apps.admin_console.core.state import state
-from apps.admin_console.services.automation_store import store, new_id
+from apps.admin_console.services.automation_store import RECOVERY_ERRORS, store, new_id
 from apps.admin_console.services.task_import import case_goal, case_title
 from artemis.config.settings import settings
 from artemis.runtime.task_limits import task_timeout
@@ -42,9 +42,46 @@ def register_submission(item: dict, case: dict | None = None, formats=None, **ex
     )
 
 
+def resolve_recovery_error(job: dict) -> bool:
+    """Archive a superseded recovery warning without erasing execution failures."""
+    if job.get("error") not in RECOVERY_ERRORS:
+        return False
+    job.setdefault("recovery_events", []).append(
+        {"message": job.pop("error"), "resolved_at": time.time()}
+    )
+    return True
+
+
 def recover_batches():
     """Recovery never silently repeats a potentially side-effecting interrupted task."""
+    from apps.admin_console.database.repositories.session_repository import SessionRepository
+    from artemis.runtime import DeviceExecutionLock
+
+    repository = SessionRepository(store.path)
+    live_sessions = {
+        str(owner.session_id)
+        for owner in DeviceExecutionLock.get_active_owners().values()
+        if owner.session_id
+    }
+    live_sessions.update(
+        str(row["session_id"])
+        for row in repository.get_all_sessions()
+        if row.get("status") not in TERMINAL and repository.process_is_alive(row.get("pid"))
+    )
+    live_sessions.update(
+        str(item["session_id"])
+        for item in state.queue_items
+        if isinstance(item, dict) and item.get("session_id") and item.get("status") not in TERMINAL
+    )
     for job in store.jobs():
+        if job["status"] == "completed" and resolve_recovery_error(job):
+            store.save_job(job)
+        if str(job["session_id"]) in live_sessions:
+            if job["status"] not in TERMINAL and str(job["session_id"]) not in state.active_runs:
+                job["recovery_waiting"] = True
+                store.save_job(job)
+            logger.info("Recovery preserved live session %s", job["session_id"])
+            continue
         if job["status"] in {"running", "queued", "finalizing", "task_paused", "resuming"}:
             job.update(
                 status=job.get("terminal_status", "interrupted"),
@@ -52,6 +89,9 @@ def recover_batches():
                 or ("" if job.get("terminal_status") else "服务中断；未完成任务需手动重跑"),
                 ended_at=job.get("ended_at") or time.time(),
             )
+            if job["status"] == "completed":
+                resolve_recovery_error(job)
+            logger.info("Recovery resolved session %s to %s", job["session_id"], job["status"])
             store.save_job(job)
     for batch in store.records("batch"):
         if has_legacy_replay(batch["id"]):
@@ -64,6 +104,8 @@ def recover_batches():
                 store.put("batch", batch["id"], batch)
             continue
         if batch["status"] in {"running", "pausing", "paused"}:
+            if any(str(job["session_id"]) in live_sessions for job in store.jobs(batch["id"])):
+                continue
             batch.update(
                 status="paused", reason="服务已重启；请检查中断任务，点击继续执行未开始任务"
             )
@@ -88,6 +130,9 @@ async def on_terminal(item: dict, status: str):
         raise RuntimeError("任务元数据写入失败")
     if job.get("timed_out"):
         status = "failed"
+    job.pop("recovery_waiting", None)
+    if status == "completed":
+        resolve_recovery_error(job)
     job.update(status="finalizing", terminal_status=status, ended_at=time.time())
     store.save_job(job)
     try:
@@ -117,11 +162,37 @@ async def on_terminal(item: dict, status: str):
     store.save_job(job)
 
 
+async def reconcile_recovered_jobs():
+    """Finalize surviving workers once they exit; never resubmit their goals."""
+    from apps.admin_console.database.repositories.session_repository import SessionRepository
+    from artemis.runtime import DeviceExecutionLock
+    from artemis.runtime.task_result import read_worker_outcome
+
+    waiting = [job for job in store.jobs() if job.get("recovery_waiting")]
+    if not waiting:
+        return
+    repository = SessionRepository(store.path)
+    owners = {str(owner.session_id) for owner in DeviceExecutionLock.get_active_owners().values()}
+    for job in waiting:
+        sid = str(job["session_id"])
+        row = repository.get_session_by_id(sid) or {}
+        if sid in owners or repository.process_is_alive(row.get("pid")):
+            continue
+        outcome = read_worker_outcome(sid)
+        status = job.get("terminal_status") or outcome.get("task_status") or row.get("status")
+        if status not in TERMINAL:
+            status = "interrupted"
+            job["error"] = job.get("error") or "服务中断；未完成任务需手动重跑"
+            store.save_job(job)
+        await on_terminal({"session_id": sid}, status)
+
+
 async def tick_batches():
     from apps.admin_console.server import task_queue_service
     from artemis.runtime import device_pool
     from apps.admin_console.services.report_export import export_batch
 
+    await reconcile_recovered_jobs()
     for batch in store.records("batch"):
         if batch["status"] not in {"running", "paused"}:
             continue

apps/admin_console/services/automation_store.py

@@ -12,6 +12,12 @@ import uuid
 from artemis.config import DB_PATH
 
 
+RECOVERY_ERRORS = {
+    "服务中断；未完成任务需手动重跑",
+    "服务中断，需手动重跑",
+}
+
+
 def identifier(value: str) -> str:
     if not re.fullmatch(r"[A-Za-z0-9_-]{1,100}", value):
         raise ValueError("无效的记录编号")

apps/admin_console/services/report_export.py

@@ -88,6 +88,10 @@ def failure_reason(directory: Path, status: str, recorded: str | None) -> str:
         )
         return safe[:500]
 
+    from apps.admin_console.services.automation_store import RECOVERY_ERRORS
+
+    if status == "completed" and recorded in RECOVERY_ERRORS:
+        return ""
     if recorded:
         return redact(recorded)
     if status not in {"failed", "interrupted"}:

artemis/config/settings.py

@@ -108,6 +108,7 @@ class Settings(BaseSettings):
     OPENAI_REASONING_EFFORT: str = "high"
     ARTEMIS_CREDENTIAL_TIMEOUT_SECONDS: float = Field(default=12.0, gt=0)
     ARTEMIS_MODEL_CACHE_TTL_SECONDS: float = Field(default=10.0, ge=0)
+    ARTEMIS_DAEMON_PROBE_TIMEOUT_SECONDS: float = Field(default=2.0, gt=0)
     ARTEMIS_VIDEO_TIMEOUT_SECONDS: float = Field(default=120.0, gt=0)
     ARTEMIS_VIDEO_MAX_RETRIES: int = Field(default=1, ge=0)
     ARTEMIS_VIDEO_CHUNK_SECONDS: float = Field(default=60.0, gt=0)

artemis/runtime/daemon_client.py

@@ -28,6 +28,9 @@ import urllib.error
 import urllib.request
 
 from artemis.config.paths import ROOT_DIR
+from artemis.config.settings import settings
+from artemis.runtime.process_probe import pid_is_alive
+from artemis.runtime.server_lifecycle import is_port_in_use, read_server_info
 from artemis.utils.logger import get_logger
 
 logger = get_logger(__name__)
@@ -44,10 +47,11 @@ def is_standalone_forced() -> bool:
 def is_daemon_running(
     host: str = DEFAULT_DAEMON_HOST,
     port: int = DEFAULT_DAEMON_PORT,
-    timeout: float = 0.3,
+    timeout: float | None = None,
 ) -> bool:
     """Fast probe to check if the Artemis Daemon HTTP server is responding."""
-    url = f"http://{host}:{port}/api/system/readiness"
+    timeout = timeout if timeout is not None else settings.ARTEMIS_DAEMON_PROBE_TIMEOUT_SECONDS
+    url = f"http://{host}:{port}/api/system/server-status"
     try:
         req = urllib.request.Request(url, headers={"User-Agent": "Artemis-Daemon-Probe"})
         with urllib.request.urlopen(req, timeout=timeout) as response:
@@ -190,6 +194,15 @@ def ensure_daemon_running(
     if is_daemon_running(host, port):
         return True, f"http://{host}:{port}"
 
+    if is_port_in_use(port, host):
+        # A slow/busy HTTP loop is not a stopped daemon. Only trust persisted
+        # metadata belonging to a live process on the requested endpoint.
+        info = read_server_info() or {}
+        if info.get("port") == port and info.get("host") == host and pid_is_alive(info.get("pid")):
+            return True, f"http://{host}:{port}"
+        logger.warning(f"Port {host}:{port} is occupied; refusing to spawn another daemon")
+        return False, None
+
     # Auto-spawn Daemon in background
     spawn_daemon(host, port)
 

docs/automation-workspace.md

@@ -22,7 +22,7 @@
 
 同一批次按顺序派发。默认失败后继续且不自动重试，也可以选择失败即停止。当前任务因设备异常或超时失败后，默认继续后续用例；设置失败即停止时才停止后续派发。暂停批次只停止后续派发。单个任务可在安全边界暂停并释放设备；批次下一项可继续，暂停的任务待提交指导或点击继续后在设备队列末尾恢复。运行中提交指导会中断当前模型思考或只读诊断，重新观察画面；已经开始的设备动作会安全结束。网页流程会显示指导的提交与领取状态，仍应检查后续动作是否符合指导。暂停等待和重新排队时间不计入该任务执行时限。
 
-服务重启后保留批次，等待用户继续未开始的用例。正在执行或暂停的任务标记中断，不自动重做；“复制失败项为新批次”保留原记录并产生新任务编号。
+服务启动前先取得监听端口，重复启动不会修改现有任务或服务信息。恢复时核对原任务进程和设备锁：仍存活的任务继续等待其真实结果，退出后补齐报告；已经退出且没有终态的任务标记中断，不自动重做，批次等待用户继续未开始的用例。“复制失败项为新批次”保留原记录并产生新任务编号。任务正常完成后，已失效的“服务中断”提示归档为恢复事件，不再显示为当前失败原因；启动时也会纠正已有完成记录中的此类旧提示。
 
 每个任务结束后生成所选格式报告。批次 ZIP 包含汇总、每项任务的报告和已保存的有序步骤截图；已开启录屏且文件存在时，还会按任务收录录屏片段。失败、跳过和中断任务也会列入。暂停时下载的是当前快照。录屏与 AI 视频分析分别配置，录屏默认关闭；仅开启分析时，录制内容用于本次分析，结束后不保留下载文件。暂停期间不录制其他任务的设备画面。
 
@@ -36,6 +36,8 @@
 
 `.env` 可配置 `ARTEMIS_TASK_TIMEOUT_SECONDS`（单任务总执行时限，默认 1800 秒）、`ARTEMIS_IMPORT_MAX_ROWS`（默认 1000 行）和 `ARTEMIS_IMPORT_MAX_BYTES`（默认 10 MiB）。修改后重启服务。网页的单批次超时设置优先于环境默认值，每行 JSON 的 `timeout_seconds` 优先于批次。单任务、批次和 MCP 均受总执行时限保护，不计排队和用户暂停时间；即使执行进程卡住，也由父进程终止并保存失败原因。
 
+守护服务通过轻量状态接口探测，`ARTEMIS_DAEMON_PROBE_TIMEOUT_SECONDS` 默认 2 秒。短暂超时且端口仍被存活的原服务占用时复用原服务，不重复启动；未知进程占用端口时明确拒绝覆盖。
+
 网页“功能配置 → 执行保护”及 MCP `mobile_config(section="capabilities")` 可配置总时限、设备观测时限（默认 60 秒）、设备观测次数（默认 3 次）、ADB 命令超时（默认 10 秒）、连续动作失败次数（默认 3 次）。任务 JSON 可用 `observation_timeout_seconds`、`observation_max_attempts`、`device_command_timeout_seconds`、`action_failure_attempts` 覆盖。截图失效或收到占位图时先有限重取，耗尽后结束任务，不把旧画面发给模型；有效截图即使没有 XML 也可按坐标定位。连续动作失败时先刷新画面再尝试兜底，兜底耗尽后结束，不循环重提用例。
 
 批次、任务元数据和报告偏好保存在现有 SQLite 数据库的 `automation_records`、`automation_jobs` 表。全局“清空任务历史”会清除批次与执行元数据；它与上文的单批次删除不同，已导出的文件会保留。

tests/unit/admin_console/test_automation.py

@@ -300,6 +300,116 @@ def test_restart_never_repeats_started_work(isolated):
     assert isolated.jobs(retry["id"])[0]["session_id"] != job["session_id"]
 
 
+@pytest.mark.parametrize("liveness_source", ["pid", "device_lock"])
+def test_recovery_preserves_live_runner_and_batch(isolated, monkeypatch, liveness_source):
+    import os
+    from types import SimpleNamespace
+    from artemis.runtime import DeviceExecutionLock
+
+    batch = service.create_batch(payload())
+    service.batch_action(batch["id"], "resume")
+    job = isolated.jobs(batch["id"])[0]
+    isolated.save_job({**job, "status": "running"})
+    if liveness_source == "pid":
+        with sqlite3.connect(isolated.path) as conn:
+            conn.execute(
+                "INSERT INTO sessions(session_id,initial_goal,start_time,status,device_info,pid) "
+                "VALUES (?,?,?,?,?,?)",
+                (job["session_id"], "goal", 1, "running", "{}", os.getpid()),
+            )
+    monkeypatch.setattr(
+        DeviceExecutionLock,
+        "get_active_owners",
+        lambda: (
+            {"device": SimpleNamespace(session_id=job["session_id"])}
+            if liveness_source == "device_lock"
+            else {}
+        ),
+    )
+    service.recover_batches()
+    assert isolated.job(job["session_id"])["status"] == "running"
+    assert not isolated.job(job["session_id"]).get("error")
+    assert isolated.get("batch", batch["id"])["status"] == "running"
+
+
+@pytest.mark.asyncio
+async def test_natural_completion_resolves_old_recovery_error_in_job_report_and_history(
+    client, isolated
+):
+    job = isolated.jobs(service.create_batch(payload())["id"])[0]
+    message = "服务中断；未完成任务需手动重跑"
+    isolated.save_job({**job, "status": "interrupted", "error": message})
+    await service.on_terminal({"session_id": job["session_id"]}, "completed")
+    saved = isolated.job(job["session_id"])
+    assert saved["status"] == "completed"
+    assert not saved.get("error")
+    assert saved["recovery_events"][0]["message"] == message
+    assert reports.session_report(job["session_id"])["error"] == ""
+    assert not client.get("/api/automation/history").json()["items"][0].get("error")
+
+
+def test_recovery_repairs_completed_legacy_warning_but_preserves_real_failure(isolated):
+    batch = service.create_batch(payload())
+    first, second = isolated.jobs(batch["id"])
+    isolated.save_job({**first, "status": "completed", "error": "服务中断，需手动重跑"})
+    isolated.save_job({**second, "status": "failed", "error": "任务执行超时（30 秒）"})
+    assert reports.session_report(first["session_id"])["error"] == ""
+    service.recover_batches()
+    assert not isolated.job(first["session_id"]).get("error")
+    assert "服务中断" in isolated.job(first["session_id"])["recovery_events"][0]["message"]
+    assert "超时" in isolated.job(second["session_id"])["error"]
+
+
+@pytest.mark.asyncio
+async def test_surviving_worker_is_finalized_when_it_exits_without_resubmission(
+    isolated, monkeypatch
+):
+    import os
+    from artemis.runtime import DeviceExecutionLock
+
+    batch = service.create_batch(payload())
+    service.batch_action(batch["id"], "resume")
+    job = isolated.jobs(batch["id"])[0]
+    isolated.save_job({**job, "status": "running"})
+    monkeypatch.setattr(DeviceExecutionLock, "get_active_owners", lambda: {})
+    with sqlite3.connect(isolated.path) as conn:
+        conn.execute(
+            "INSERT INTO sessions(session_id,initial_goal,start_time,status,device_info,pid) "
+            "VALUES (?,?,?,?,?,?)",
+            (job["session_id"], "goal", time.time(), "running", "{}", os.getpid()),
+        )
+    service.recover_batches()
+    await service.reconcile_recovered_jobs()
+    assert isolated.job(job["session_id"])["status"] == "running"
+    with sqlite3.connect(isolated.path) as conn:
+        conn.execute(
+            "UPDATE sessions SET pid=NULL,status='completed' WHERE session_id=?",
+            (job["session_id"],),
+        )
+    await service.reconcile_recovered_jobs()
+    saved = isolated.job(job["session_id"])
+    assert saved["status"] == "completed"
+    assert saved["report_ready"]
+    assert not saved.get("recovery_waiting")
+    assert not saved.get("error")
+    assert len(isolated.jobs(batch["id"])) == 2
+    assert isolated.jobs(batch["id"])[1]["status"] == "pending"
+
+
+@pytest.mark.asyncio
+async def test_surviving_worker_that_dies_without_result_is_interrupted(isolated, monkeypatch):
+    from artemis.runtime import DeviceExecutionLock
+
+    job = isolated.jobs(service.create_batch(payload())["id"])[0]
+    isolated.save_job({**job, "status": "running", "recovery_waiting": True})
+    monkeypatch.setattr(DeviceExecutionLock, "get_active_owners", lambda: {})
+    await service.reconcile_recovered_jobs()
+    saved = isolated.job(job["session_id"])
+    assert saved["status"] == "interrupted"
+    assert "服务中断" in saved["error"]
+    assert not saved.get("recovery_waiting")
+
+
 @pytest.mark.asyncio
 async def test_batch_admission_idempotent_and_bound_device(isolated, monkeypatch):
     from apps.admin_console import server

tests/unit/admin_console/test_server_lifecycle.py

@@ -15,6 +15,7 @@
 import asyncio
 from contextlib import suppress
 import signal
+import socket
 from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
@@ -23,10 +24,55 @@ import uvicorn
 from apps.admin_console.core.state import state
 from apps.admin_console.routers.tasks import stream_events
 from apps.admin_console.server import ArtemisUvicornServer, app, on_shutdown
+from apps.admin_console import server as server_module
 
 WINDOWS_FORCE_SIGNAL = getattr(signal, "SIGBREAK", signal.SIGTERM)
 
 
+@pytest.mark.parametrize("reload", [False, True])
+def test_occupied_port_never_initializes_or_overwrites_server_metadata(
+    tmp_path, monkeypatch, reload
+):
+    from artemis.runtime import server_lifecycle
+
+    metadata = tmp_path / "server.json"
+    metadata.write_text('{"pid":123,"lifecycle_token":"original"}', encoding="utf-8")
+    monkeypatch.setattr(server_lifecycle, "get_server_info_file", lambda: metadata)
+    before = metadata.read_bytes()
+    with (
+        socket.create_server(("127.0.0.1", 0)) as original,
+        patch.object(server_module.ArtemisUvicornServer, "run") as run,
+        patch.object(server_module, "write_server_info") as publish,
+    ):
+        with pytest.raises(SystemExit, match="1"):
+            server_module.run_ui_server("127.0.0.1", original.getsockname()[1], reload=reload)
+        run.assert_not_called()
+        publish.assert_not_called()
+        assert metadata.read_bytes() == before
+
+
+def test_server_holds_port_before_running_lifespan(monkeypatch):
+    monkeypatch.setattr(state, "port", 0, raising=False)
+    monkeypatch.setattr(state, "host", "127.0.0.1", raising=False)
+    observed = []
+
+    def run(_server, sockets):
+        listener = sockets[0]
+        port = listener.getsockname()[1]
+        observed.append(listener)
+        assert state.port == port
+        with pytest.raises(OSError), socket.create_server(("127.0.0.1", port)):
+            pass
+
+    monkeypatch.setattr(server_module.ArtemisUvicornServer, "run", run)
+    monkeypatch.setattr(server_module, "clear_server_info", lambda **kwargs: None)
+    with patch.object(server_module, "write_server_info") as publish:
+        server_module.run_ui_server("127.0.0.1", 0)
+        publish.assert_not_called()  # Publication belongs to the later lifespan.
+    assert len(observed) == 1
+    assert observed[0].fileno() == -1
+
+
 def _pending_queue_get_tasks():
     return {
         task

tests/unit/runtime/test_daemon_client.py

@@ -93,6 +93,7 @@ def test_ensure_daemon_running_standalone_override(monkeypatch):
 def test_ensure_daemon_running_auto_spawns():
     with (
         patch("artemis.runtime.daemon_client.is_daemon_running", side_effect=[False, True]),
+        patch("artemis.runtime.daemon_client.is_port_in_use", return_value=False),
         patch("artemis.runtime.daemon_client.spawn_daemon") as mock_spawn,
     ):
         ok, base_url = ensure_daemon_running(timeout=1.0, wait_ready=True)
@@ -101,6 +102,42 @@ def test_ensure_daemon_running_auto_spawns():
         mock_spawn.assert_called_once()
 
 
+def test_busy_live_daemon_is_reused_without_spawning():
+    with (
+        patch("artemis.runtime.daemon_client.is_daemon_running", return_value=False),
+        patch("artemis.runtime.daemon_client.is_port_in_use", return_value=True),
+        patch(
+            "artemis.runtime.daemon_client.read_server_info",
+            return_value={"host": "127.0.0.1", "port": 8000, "pid": 12345},
+        ),
+        patch("artemis.runtime.daemon_client.pid_is_alive", return_value=True),
+        patch("artemis.runtime.daemon_client.spawn_daemon") as spawn,
+    ):
+        assert ensure_daemon_running() == (True, "http://127.0.0.1:8000")
+        spawn.assert_not_called()
+
+
+def test_unknown_port_owner_is_not_overwritten():
+    with (
+        patch("artemis.runtime.daemon_client.is_daemon_running", return_value=False),
+        patch("artemis.runtime.daemon_client.is_port_in_use", return_value=True),
+        patch("artemis.runtime.daemon_client.read_server_info", return_value=None),
+        patch("artemis.runtime.daemon_client.spawn_daemon") as spawn,
+    ):
+        assert ensure_daemon_running() == (False, None)
+        spawn.assert_not_called()
+
+
+def test_liveness_probe_uses_lightweight_endpoint_and_configured_timeout(monkeypatch):
+    from artemis.config.settings import settings
+
+    monkeypatch.setattr(settings, "ARTEMIS_DAEMON_PROBE_TIMEOUT_SECONDS", 7.0)
+    with patch("urllib.request.urlopen", return_value=_daemon_ok_response(b"{}")) as probe:
+        assert is_daemon_running()
+        assert probe.call_args.args[0].full_url.endswith("/api/system/server-status")
+        assert probe.call_args.kwargs["timeout"] == 7.0
+
+
 def test_submit_task_to_daemon():
     mock_resp = MagicMock()
     mock_resp.status = 200