feat: enhance input component and task modal UX

- Text selection & clipboard: Add full text selection support with Ctrl+A/C/X/V operations, visual highlight, and proper cursor positioning
- Multiple annotations: Fix annotation creation to properly append multiple entries instead of overwriting
- Navigation improvements: Improve annotation list navigation to cycle between items and input field
- UI layout fixes: Add flex wrapping to tag displays to handle long lists gracefully
- Focus management: Fix focus retention when switching between edit/view modes in task modal
- Tag suggestions: Prevent auto-acceptance of suggestions on Enter, allowing custom tag input

src/view/task_detail_modal/render/mod.rs

@@ -61,6 +61,7 @@ pub(super) fn render_task_detail_modal(
             tags_input,
             status_dropdown,
             priority_dropdown,
+            focus_handle,
             form_focus_handle,
             scroll_handle,
             &theme,