feat: Refactor utility and component exports, update dependencies, and add Knip for unused code detection.

frontend/src/documents/components/EntryShell.tsx

@@ -1,6 +1,6 @@
 import React, { type DragEvent } from 'react';
 
-export interface EntryShellHandlers {
+interface EntryShellHandlers {
     onClick: (event: React.MouseEvent) => void;
     onDoubleClick: (event: React.MouseEvent) => void;
     onDragStart: (event: DragEvent<HTMLElement>) => void;

frontend/src/documents/components/IconSizeSlider.tsx

@@ -1,31 +0,0 @@
-import React from 'react';
-
-interface IconSizeSliderProps {
-    scale: number;
-    onChange: (scale: number) => void;
-    min?: number;
-    max?: number;
-}
-
-const IconSizeSlider: React.FC<IconSizeSliderProps> = ({
-    scale,
-    onChange,
-    min = 0.5,
-    max = 2,
-}) => {
-    return (
-        <div className="icon-size-slider">
-            <input
-                type="range"
-                className="icon-size-slider__input"
-                min={min}
-                max={max}
-                step="any"
-                value={scale}
-                onChange={(e) => onChange(parseFloat(e.target.value))}
-            />
-        </div>
-    );
-};
-
-export default IconSizeSlider;