Release v0.13.9: Test compliance fixes

What's Changed

Test Compliance Improvements

• Fixed missing skip_confirm parameters in data processing tests
• Updated tests to comply with Google ADK requirements for explicit parameter passing
• Ensures all configuration write operations include required confirmation parameters

Improvements Since v0.13.8

These changes were committed after v0.13.8 was released and are now included in this release:

• Enhanced confirmation previews: Increased preview limits for better user context
  • Archive operations: 5→10 sources
  • Config processing: 3→10 keys
  • CSV operations: 3→5 rows
  • File operations: 200→1200 chars
• Parameter validation: Fixed format_exception_details parameter handling

All changes maintain full backward compatibility with existing code.

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