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

- Add NOTICE file and README license references for mobile-use and finalrun-agent
- Add derivative attribution headers to 17 files derived from mobile-use
- Rename hopper agent to entity_extractor across prompts, tools, and configs
- Remove obsolete adb_tunnel, ApiBaseUrl, and legacy CLI utility scripts
- Replace legacy examples with native Artemis diagnostic and workflow examples
- Update unit and tool tests to validate entity_extractor and SDK builders

artemis/utils/app_launch_utils.py

@@ -11,6 +11,9 @@
 # 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.
 
 """Utilities for handling app locking and initial app launch logic."""
 
@@ -216,7 +219,7 @@ async def _poll_for_app_ready(
     Only fails if we get a different (non-null) package or timeout.
 
     Args:
-        ctx: Mobile use context
+        ctx: ArtemisContext
         app_package: Expected package name
         max_poll_seconds: Maximum time to poll (default: 15s)
         poll_interval: Time between polls (default: 1s)
@@ -272,7 +275,7 @@ async def launch_app_with_retries(
     """Launch an app with retry logic and smart polling.
 
     Args:
-        ctx: Mobile use context
+        ctx: ArtemisContext
         app_package: Package name (Android) to launch
         max_retries: Maximum number of launch attempts (default: 3)
         max_poll_seconds: Maximum time to wait for app to load per attempt
@@ -345,7 +348,7 @@ async def _handle_initial_app_launch(
     3. Return status with success/error information
 
     Args:
-        ctx: Mobile use context
+        ctx: ArtemisContext
         locked_app_package: Package name (Android) to lock to
 
     Returns: