merge main into rh-test

tests-ui/CLAUDE.md

@@ -1,5 +1,11 @@
 # Unit Testing Guidelines
 
+## Running Tests
+- Single file: `pnpm test:unit -- <filename>`
+- All tests: `pnpm test:unit`
+- Wrong Examples:
+  - Still runs all tests: `pnpm test:unit <filename>`
+
 ## Testing Approach
 
 - Write tests for new features
@@ -11,3 +17,7 @@
 - Check @tests-ui/README.md for guidelines
 - Use existing test utilities
 - Mock external dependencies
+
+## Mocking
+- Read: https://vitest.dev/api/mock.html
+- Critical: Always prefer vitest mock functions over writing verbose manual mocks