Revert "refactor: clean up legacy code, rename hopper to entity_extractor, and add third-party notices"

This reverts commit 54fcef9887.

Please do not submit unrelated docs and codes in the same commit. I am reverting this commit so that the related files can be submitted in better-organized future commits.

artemis/controllers/platform_specific_commands_controller.py

@@ -11,18 +11,15 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-#
-# Portions of this file are derived from mobile-use (https://github.com/minitap-ai/mobile-use)
-# Copyright 2025-2026 Minitap, Inc. Licensed under the Apache License 2.0.
 
 import os
 from shutil import which
-import subprocess
 import time
 from typing import Any
 
 from artemis.context import ArtemisContext, DevicePlatform
 from artemis.utils.logger import ArtemisLogger, get_logger
+from artemis.utils.shell_utils import run_shell_command_on_host
 
 logger = get_logger(__name__)
 
@@ -60,17 +57,12 @@ def get_first_device(
 
     if which("adb"):
         try:
-            res = subprocess.run(
-                ["adb", "devices"],
-                capture_output=True,
-                text=True,
-                check=True,
-                stdin=subprocess.DEVNULL,
-            )
-            for line in res.stdout.strip().split("\n"):
+            android_output = run_shell_command_on_host("adb devices")
+            lines = android_output.strip().split("\n")
+            for line in lines:
                 if "device" in line and not line.startswith("List of devices"):
                     return line.split()[0], DevicePlatform.ANDROID, None
-        except Exception as e:
+        except RuntimeError as e:
             if logger:
                 logger.error(f"ADB command failed: {e}")