feat: Add draggable window component and associated functionality

- Implemented DraggableWindose component with drag-and-drop capabilities.
- Added shake detection to close the window after multiple shakes.
- Integrated responsive design for mobile devices.
- Created TXT component to display a clickable text icon with hover effects.
- Included image assets for the draggable window and text icon.

src/components/DraggableWindose.tsx

@@ -0,0 +1,141 @@
+'use client';
+
+import { useState, useRef, useEffect } from 'react';
+import Image from 'next/image';
+import { useIsMobile } from '@/hooks/use-mobile';
+
+export default function DraggableWindose({ targetPosition, isVisible, onClose, onDragStart }: { targetPosition: { x: number; y: number } | null; isVisible: boolean; onClose: () => void; onDragStart?: () => void }) {
+    const isMobile = useIsMobile();
+    const [position, setPosition] = useState({ x: 100, y: 100 });
+    const [isDragging, setIsDragging] = useState(false);
+    const [dragOffset, setDragOffset] = useState({ x: 0, y: 0 });
+    const [shakeCount, setShakeCount] = useState(0);
+    const windowRef = useRef<HTMLDivElement>(null);
+    const lastPositionRef = useRef({ x: 100, y: 100 });
+    const shakeThresholdRef = useRef(0);
+
+    const handleMouseDown = (e: React.MouseEvent) => {
+        if (e.button !== 0) return; // Only left click
+        setIsDragging(true);
+        setShakeCount(0);
+        shakeThresholdRef.current = 0;
+        onDragStart?.();
+        if (windowRef.current) {
+            const rect = windowRef.current.getBoundingClientRect();
+            setDragOffset({
+                x: e.clientX - rect.left,
+                y: e.clientY - rect.top,
+            });
+        }
+    };
+
+    useEffect(() => {
+        if (!isDragging) return;
+
+        const handleMouseMove = (e: MouseEvent) => {
+            const newX = e.clientX - dragOffset.x;
+            const newY = e.clientY - dragOffset.y;
+            
+            setPosition({
+                x: newX,
+                y: newY,
+            });
+
+            // 흔드는 감지
+            const distance = Math.sqrt(
+                Math.pow(newX - lastPositionRef.current.x, 2) +
+                Math.pow(newY - lastPositionRef.current.y, 2)
+            );
+            
+            lastPositionRef.current = { x: newX, y: newY };
+            shakeThresholdRef.current += distance;
+
+            if (shakeThresholdRef.current > 2000) {
+                setShakeCount(prev => prev + 1);
+                shakeThresholdRef.current = 0;
+
+                if (shakeCount >= 2) {
+                    onClose();
+                    setIsDragging(false);
+                }
+            }
+        };
+
+        const handleMouseUp = () => {
+            setIsDragging(false);
+        };
+
+        document.addEventListener('mousemove', handleMouseMove);
+        document.addEventListener('mouseup', handleMouseUp);
+
+        return () => {
+            document.removeEventListener('mousemove', handleMouseMove);
+            document.removeEventListener('mouseup', handleMouseUp);
+        };
+    }, [isDragging, dragOffset, shakeCount]);
+
+    useEffect(() => {
+        if (isDragging || targetPosition) return;
+
+        const interval = setInterval(() => {
+            setPosition({
+                x: Math.random() * (window.innerWidth - 500),
+                y: Math.random() * (window.innerHeight - 400),
+            });
+        }, 500);
+
+        return () => clearInterval(interval);
+    }, [isDragging, targetPosition]);
+
+    useEffect(() => {
+        if (targetPosition && !isDragging) {
+            setPosition(targetPosition);
+        }
+    }, [targetPosition, isDragging]);
+
+    return (
+        isMobile ? (
+            <figure className="mb-8 w-full h-auto">
+                <picture className="block bg-gray-100 rounded-xl aspect-3-2 overflow-hidden image-scale object-shadowed">
+                    <Image
+                        src="/full.webp"
+                        alt="Banner"
+                        width={1200}
+                        height={400}
+                        priority
+                        className="object-cover object-center transition-transform duration-300 hover:scale-105" 
+                    />
+                </picture>
+            </figure >
+        ) : (
+            isVisible && (
+                <div
+                    ref={windowRef}
+                    className="fixed cursor-move select-none z-50"
+                    style={{
+                        left: `${position.x}px`,
+                        top: `${position.y}px`,
+                        transition: isDragging ? 'none' : targetPosition ? 'left 0.1s, top 0.1s' : 'left 0.4s ease-in-out, top 0.4s ease-in-out',
+                    }}
+                    onMouseDown={handleMouseDown}
+                >
+                    <div className="relative w-fit h-fit">
+                        <Image
+                            src="/tlqkf.webp"
+                            alt="Draggable Window"
+                            width={500}
+                            height={400}
+                            priority
+                            draggable={false}
+                        />
+                        <button
+                            onClick={() => onClose()}
+                            className="absolute top-1 right-2 w-5 h-5 cursor-pointer"
+                            aria-label="Close window"
+                        />
+                    </div>
+                </div>
+            )
+        )
+    );
+}

src/components/txt.tsx

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+import Image from "next/image";
+
+interface TXTProps {
+    onHover?: (position: { x: number; y: number } | null) => void;
+}
+
+export default function TXT({ onHover }: TXTProps) {
+    return (
+        <div 
+            className="flex flex-col items-center justify-center gap-4 absolute top-4 left-4 p-2 cursor-pointer font-galmuri drag-none select-none"
+            onMouseEnter={() => onHover?.({ x: 16, y: 16 })}
+            onMouseLeave={() => onHover?.(null)}
+            onClick={() => {
+                alert("왜 편법을 쓰지?");
+                window.location.reload();
+            }}
+        >
+            <Image src="/txt.webp" alt="txt" width={24} height={24} />
+            <span className="text-sm font-medium text-foreground/80 font-galmuri">비밀.txt</span>
+        </div>
+    );
+}