fix(cli): add missing subprocess.run() timeouts in doctor and status (#4009)

Add timeout parameters to 4 subprocess.run() calls that could hang
indefinitely if the child process blocks (e.g., unresponsive docker
daemon, systemctl waiting for D-Bus):

- doctor.py: docker info (timeout=10), ssh check (timeout=15)
- status.py: systemctl is-active (timeout=5), launchctl list (timeout=5)

Each call site now catches subprocess.TimeoutExpired and treats it as
a failure, consistent with how non-zero return codes are already handled.

Add AST-based regression test that verifies every subprocess.run() call
in CLI modules specifies a timeout keyword argument.

Co-authored-by: dieutx <dangtc94@gmail.com>

hermes_cli/doctor.py

@@ -406,8 +406,11 @@ def run_doctor(args):
     if terminal_env == "docker":
         if shutil.which("docker"):
             # Check if docker daemon is running
-            result = subprocess.run(["docker", "info"], capture_output=True)
-            if result.returncode == 0:
+            try:
+                result = subprocess.run(["docker", "info"], capture_output=True, timeout=10)
+            except subprocess.TimeoutExpired:
+                result = None
+            if result is not None and result.returncode == 0:
                 check_ok("docker", "(daemon running)")
             else:
                 check_fail("docker daemon not running")
@@ -426,12 +429,16 @@ def run_doctor(args):
         ssh_host = os.getenv("TERMINAL_SSH_HOST")
         if ssh_host:
             # Try to connect
-            result = subprocess.run(
-                ["ssh", "-o", "ConnectTimeout=5", "-o", "BatchMode=yes", ssh_host, "echo ok"],
-                capture_output=True,
-                text=True
-            )
-            if result.returncode == 0:
+            try:
+                result = subprocess.run(
+                    ["ssh", "-o", "ConnectTimeout=5", "-o", "BatchMode=yes", ssh_host, "echo ok"],
+                    capture_output=True,
+                    text=True,
+                    timeout=15
+                )
+            except subprocess.TimeoutExpired:
+                result = None
+            if result is not None and result.returncode == 0:
                 check_ok(f"SSH connection to {ssh_host}")
             else:
                 check_fail(f"SSH connection to {ssh_host}")

hermes_cli/status.py

@@ -285,23 +285,31 @@ def show_status(args):
             _gw_svc = get_service_name()
         except Exception:
             _gw_svc = "hermes-gateway"
-        result = subprocess.run(
-            ["systemctl", "--user", "is-active", _gw_svc],
-            capture_output=True,
-            text=True
-        )
-        is_active = result.stdout.strip() == "active"
+        try:
+            result = subprocess.run(
+                ["systemctl", "--user", "is-active", _gw_svc],
+                capture_output=True,
+                text=True,
+                timeout=5
+            )
+            is_active = result.stdout.strip() == "active"
+        except subprocess.TimeoutExpired:
+            is_active = False
         print(f"  Status:       {check_mark(is_active)} {'running' if is_active else 'stopped'}")
         print("  Manager:      systemd (user)")
         
     elif sys.platform == 'darwin':
         from hermes_cli.gateway import get_launchd_label
-        result = subprocess.run(
-            ["launchctl", "list", get_launchd_label()],
-            capture_output=True,
-            text=True
-        )
-        is_loaded = result.returncode == 0
+        try:
+            result = subprocess.run(
+                ["launchctl", "list", get_launchd_label()],
+                capture_output=True,
+                text=True,
+                timeout=5
+            )
+            is_loaded = result.returncode == 0
+        except subprocess.TimeoutExpired:
+            is_loaded = False
         print(f"  Status:       {check_mark(is_loaded)} {'loaded' if is_loaded else 'not loaded'}")
         print("  Manager:      launchd")
     else: