feat: add nightly branch workflow

docs/implementation/FRONTEND_TESTING_PHASE2_3_COMPLETE.md

@@ -11,10 +11,12 @@ Successfully completed Phases 2 and 3 of frontend component UI testing for the b
 ## Scope
 
 ### Phase 2: Component UI Tests
+
 - **SystemSettings**: Application URL card testing (7 new tests)
 - **UsersPage**: URL preview in InviteModal (6 new tests)
 
 ### Phase 3: Edge Cases
+
 - Error handling for API failures
 - Validation state management
 - Debounce functionality
@@ -23,12 +25,14 @@ Successfully completed Phases 2 and 3 of frontend component UI testing for the b
 ## Test Results
 
 ### Summary
+
 - **Total Test Files**: 2
 - **Tests Passed**: 45/45 (100%)
 - **Tests Added**: 13 new component UI tests
 - **Test Duration**: 11.58s
 
 ### SystemSettings Application URL Card Tests (7 tests)
+
 1. ✅ Renders public URL input field
 2. ✅ Shows green border and checkmark when URL is valid
 3. ✅ Shows red border and X icon when URL is invalid
@@ -39,6 +43,7 @@ Successfully completed Phases 2 and 3 of frontend component UI testing for the b
 8. ✅ Handles validation API error gracefully
 
 ### UsersPage URL Preview Tests (6 tests)
+
 1. ✅ Shows URL preview when valid email is entered
 2. ✅ Debounces URL preview for 500ms
 3. ✅ Replaces sample token with ellipsis in preview
@@ -49,6 +54,7 @@ Successfully completed Phases 2 and 3 of frontend component UI testing for the b
 ## Coverage Report
 
 ### Coverage Metrics
+
 ```
 File                | % Stmts | % Branch | % Funcs | % Lines
 --------------------|---------|----------|---------|--------
@@ -57,6 +63,7 @@ UsersPage.tsx       |   76.92 |    61.79 |   70.45 |   78.37
 ```
 
 ### Analysis
+
 - **SystemSettings**: Strong coverage across all metrics (71-82%)
 - **UsersPage**: Good coverage with room for improvement in branch coverage
 
@@ -82,6 +89,7 @@ UsersPage.tsx       |   76.92 |    61.79 |   70.45 |   78.37
 ### Testing Patterns Used
 
 #### Debounce Testing
+
 ```typescript
 // Enter text
 await user.type(emailInput, 'test@example.com')
@@ -94,6 +102,7 @@ expect(client.post).toHaveBeenCalledTimes(1)
 ```
 
 #### Visual State Validation
+
 ```typescript
 // Check for border color change
 const inputElement = screen.getByPlaceholderText('https://charon.example.com')
@@ -101,6 +110,7 @@ expect(inputElement.className).toContain('border-green')
 ```
 
 #### Icon Presence Testing
+
 ```typescript
 // Find check icon by SVG path
 const checkIcon = screen.getByRole('img', { hidden: true })
@@ -110,6 +120,7 @@ expect(checkIcon).toBeTruthy()
 ## Files Modified
 
 ### Test Files
+
 1. `/frontend/src/pages/__tests__/SystemSettings.test.tsx`
    - Added `client` module mock with `post` method
    - Added 8 new tests for Application URL card
@@ -131,12 +142,14 @@ expect(checkIcon).toBeTruthy()
 ## Recommendations
 
 ### For Future Work
+
 1. **Increase Branch Coverage**: Add tests for edge cases in conditional logic
 2. **Integration Tests**: Consider E2E tests for URL validation flow
 3. **Accessibility Testing**: Add tests for keyboard navigation and screen readers
 4. **Performance**: Monitor test execution time as suite grows
 
 ### Testing Best Practices Applied
+
 - ✅ User-facing locators (`getByRole`, `getByPlaceholderText`)
 - ✅ Auto-retrying assertions with `waitFor()`
 - ✅ Descriptive test names following "Feature - Action" pattern