Fix editor cursor jump and @mentions

…ollection

- Create new FeedbackPanel component with modal interface for collecting user feedback
- Implement feedback type selection (bug, feature request, general feedback)
- Add textarea input for detailed feedback messages
- Include keyboard escape handler to close panel
- Display app version information in feedback submission
- Add success state with confirmation message after submission
- Implement panel state reset on close with 200ms delay
- Log feedback data to console with timestamp and app version metadata
- Style panel with stone color scheme matching existing design system
- Add backdrop blur effect and proper z-index layering for modal overlay

- Import and integrate FeedbackPanel component for user feedback collection
- Add isFeedbackPanelOpen state to manage feedback panel visibility
- Add onOpenFeedback callback to sidebar for opening feedback panel
- Improve handleSelectNote to prevent opening deleted notes
- Enhance handleDeleteForever to clean up all mentions of deleted notes in other notes
- Update affected notes' lastUpdatedAt timestamp when mentions are removed
- Refactor note selection logic with early return for deleted notes

…andling

- Add try-catch error handling to formatDate function to gracefully handle invalid dates
- Return original date string if parsing fails instead of crashing
- Add validation checks for NaN dates before processing
- Replace ISO string date parsing with local date formatting to avoid timezone issues
- Handle both Date objects and string date inputs in getDaysWithActivity
- Add validation for each date field (lastOpenedAt, updatedAt, createdAt) before adding to set
- Improve getNotesForDate helper to use local date formatting and handle invalid dates
- Add error logging for invalid dates to aid debugging
- Prevent sidebar from breaking when notes contain malformed date values

- Import MessageSquare icon from lucide-react for feedback button
- Add onOpenFeedback callback prop to SidebarProps interface
- Add onOpenFeedback parameter to Sidebar component destructuring
- Add feedback button to sidebar navigation menu with MessageSquare icon
- Position feedback button in the navigation section alongside search and other actions
- Enable users to open feedback panel directly from sidebar for improved accessibility

…t handling

- Add useRef hook to track menu element for accurate click-outside detection
- Replace 'click' event listener with 'mousedown' for more reliable event capture
- Implement proper click-outside logic that checks if click target is within menu
- Remove stopPropagation from menu div as it's no longer needed
- Reorder className properties for consistency (flex items before padding)
- Improve code formatting and readability in event handlers
- Prevent menu from closing immediately on open by maintaining setTimeout delay

- Replace target element reference with editor container query selector for more reliable positioning
- Update menu position calculation to use editor container bounds instead of event target bounds
- Adjust vertical position to use rect.bottom instead of rect.top for better menu placement
- Add 10px offset below selection for improved visual spacing
- Add null check for editor container to prevent positioning errors when container is unavailable
- Fixes context menu appearing at incorrect coordinates when triggered from nested elements

- Remove stopPropagation() call from keydown handler to allow proper event bubbling
- Remove duplicate overflow-y-auto class from menu container
- Simplify positioning by removing unnecessary transform translateY values
- Improve event handling to prevent unintended side effects on parent elements