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

README.md

@@ -314,3 +314,7 @@ Contributions are warmly welcomed!
 ## License
 
 This project is licensed under the [Apache License 2.0](LICENSE).
+
+This project includes source code developed by [Minitap, Inc.](https://github.com/minitap-ai/mobile-use).
+
+