Summary

Removes the specialized write_to_csv skill in favor of using ADK's built-in create_artifact tool. The take_screenshot skill now saves files locally and returns file paths instead of automatically creating artifacts. This promotes better separation of concerns - skills handle browser automation while the agent uses create_artifact for making files downloadable.

Changes

Removed

• write_to_csv skill and all related tests (skills/write_to_csv.go, skills/write_to_csv_test.go)
• Automatic artifact creation logic from take_screenshot skill

Modified

• take_screenshot skill: Now saves screenshots to local filesystem and returns the file path instead of automatically creating artifacts
• Agent system prompt: Updated to include instructions for using create_artifact tool with screenshots and data extraction
• Main server initialization:
  • Changed from NewDefaultToolBox() to NewToolBox() + WithDefaultToolBox() pattern
  • Added ArtifactService initialization and configuration
  • Updated server builder to use WithArtifactService instead of WithArtifactStorage
• Dependencies: Upgraded ADK from v0.14.0 to v0.15.0

Benefits

• Better separation of concerns: Skills focus on their core functionality (browser automation), artifact creation is handled by the agent
• More flexible: Users can choose whether to create artifacts or just work with local files
• Reduced code duplication: Removes specialized artifact handling from individual skills
• Consistent pattern: All file creation now follows the same pattern: skill creates file → agent uses create_artifact to make it downloadable

Test Plan

• Removed tests for write_to_csv skill
• Updated take_screenshot tests to validate file path return instead of artifact creation
• Manual testing: Verify screenshots can be taken and then converted to artifacts using create_artifact tool
• Manual testing: Verify data extraction → CSV conversion → artifact creation workflow

Migration Notes

For users upgrading to this version:

• The write_to_csv skill is no longer available
• To create CSV files, use data extraction combined with the create_artifact tool
• Screenshots now return file paths; use create_artifact to make them downloadable