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### Problem ●In edgeless mode, when starting to edit, `note-block` exhibits two types of invalid caret behavior: (1)**Title Region Misalignment**: Clicking on the title region incorrectly generates the caret in the first line of the note content, rather than in the title itself. (2)**Vanishing Caret at Line End**: When clicking in the empty space beyond the end of a text section, the caret appears momentarily at the line's end but disappears immediately. ●The following video demonstrates these issues: https://github.com/user-attachments/assets/db9c2c50-709f-4d32-912c-0f01841d2024 ### Solution ●**Title Click Interception**: Added a check to determine if the click coordinates fall in the title region. If so, the caret positioning is now handled by a dedicated logic path. Otherwise, it falls back to the existing note-content logic as before. ●**Range Normalization**: When the generated `range.startContainer` is not a `TextNode`, try to find a most appropriate `TextNode` and update the `range` accordingly. ### After ●The video below shows the behavior after this fix. https://github.com/user-attachments/assets/b2f70b64-1fc6-4049-8379-8bcf3a488a05 <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit * **Bug Fixes** * Clicking a page block title no longer creates unwanted paragraphs and reliably focuses the title. * Paragraph creation now occurs only when needed and focus is applied only after successful creation. * Click coordinates are clamped to container bounds to prevent misplaced cursors or focus. * **Improvements** * Caret normalization: clicks place the caret at the last meaningful text position for consistent single-cursor behavior. * **Tests** * Added end-to-end coverage for caret placement and focus transitions. * New ratio-based click/double-click test utilities and a helper for double-clicking note bodies. <!-- end of auto-generated comment: release notes by coderabbit.ai -->