Two root causes for failing E2E tests in CI:
1. Encryption button not visible after provider selection: The async
provider change listener loads config from IndexedDB and updates the
Formly model, but the 1000ms waitForTimeout was insufficient in CI.
Replace with polling (200ms intervals, 10s timeout) that waits for
either enable or disable encryption button to become visible.
Also removes ~130 lines of leftover debug logging from disableEncryption().
2. Drag-handle strict mode violation on parent tasks with subtasks:
task.locator('.drag-handle') matched both the parent's drag handle
and nested subtask drag handles. Add .first() to all drag-handle
locator usages to target only the parent task's own handle.
- Click on .drag-handle instead of task element to properly focus task
without triggering title edit mode (which would block keyboard shortcuts)
- Verify WebDAV form fields appear after selection before proceeding
- Add clear error message when WebDAV selection fails after retries
Add optional setting to show confirmation dialog when deleting tasks
via keyboard shortcut (Backspace) or context menu. This prevents
accidental cascading deletions when users press Backspace expecting
browser-like "go back" behavior.
- Add isConfirmBeforeTaskDelete setting (defaults to true)
- Add confirmation dialog to TaskComponent.deleteTask()
- Add confirmation dialog to context menu deleteTask()
- Add setting checkbox in Settings > Misc
- Add unit and E2E tests for the feature
Closes#5942
Adds a non-sync e2e test to verify the undo delete functionality:
- Create task
- Delete task via context menu
- Click Undo in snackbar
- Verify task is restored
