Agent Skills: uat-reporter

Writes UAT test results (Pass/Fail/Blocked/Skip with color formatting) to the Google Sheet 'All Test Cases' tab. Use when: (1) Recording test results after UAT execution, (2) Writing a single test result for debugging, (3) Verifying previously written results match expected values, (4) Previewing what would be written with dry-run mode. Supports batch writes per module, single-test writes, row lookup by test ID, color-coded status cells, verification readback, and dual logging.