feat: 프로젝트 초기 설정 완료 - Vite + React + TypeScript, TailwindCSS + ShadCN UI, Zustand, 기본 타입 및 컴포넌트 구현

src/App.css

@@ -0,0 +1,42 @@
+#root {
+  max-width: 1280px;
+  margin: 0 auto;
+  padding: 2rem;
+  text-align: center;
+}
+
+.logo {
+  height: 6em;
+  padding: 1.5em;
+  will-change: filter;
+  transition: filter 300ms;
+}
+.logo:hover {
+  filter: drop-shadow(0 0 2em #646cffaa);
+}
+.logo.react:hover {
+  filter: drop-shadow(0 0 2em #61dafbaa);
+}
+
+@keyframes logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  a:nth-of-type(2) .logo {
+    animation: logo-spin infinite 20s linear;
+  }
+}
+
+.card {
+  padding: 2em;
+}
+
+.read-the-docs {
+  color: #888;
+}

src/App.tsx

@@ -0,0 +1,143 @@
+import React from "react";
+import { useAppStore } from "./stores/useAppStore";
+import { Card, CardContent } from "./components/ui/card";
+import { Button } from "./components/ui/button";
+
+function App() {
+  const { isLoading, loadingMessage, currentFile, isAuthenticated } =
+    useAppStore();
+
+  return (
+    <div className="min-h-screen bg-background">
+      {/* 상단 바 */}
+      <header className="border-b bg-white/95 backdrop-blur supports-[backdrop-filter]:bg-white/60">
+        <div className="container flex h-16 items-center px-4">
+          <div className="flex items-center space-x-4">
+            <h1 className="text-2xl font-bold text-primary">sheetEasy AI</h1>
+          </div>
+
+          <div className="ml-auto flex items-center space-x-4">
+            {currentFile && (
+              <Button variant="outline" size="sm">
+                다운로드
+              </Button>
+            )}
+            <Button variant="ghost" size="sm">
+              히스토리
+            </Button>
+            <Button variant="ghost" size="icon">
+              <div className="h-8 w-8 rounded-full bg-primary/10 flex items-center justify-center">
+                <span className="text-sm font-medium">계정</span>
+              </div>
+            </Button>
+          </div>
+        </div>
+      </header>
+
+      {/* 메인 콘텐츠 */}
+      <main className="container mx-auto px-4 py-8">
+        {!currentFile ? (
+          /* 파일 업로드 영역 */
+          <div className="flex items-center justify-center min-h-[60vh]">
+            <Card className="w-full max-w-2xl">
+              <CardContent className="p-12">
+                <div className="text-center">
+                  <div className="mb-8">
+                    <div className="mx-auto h-24 w-24 rounded-full bg-primary/10 flex items-center justify-center mb-4">
+                      <svg
+                        className="h-12 w-12 text-primary"
+                        fill="none"
+                        stroke="currentColor"
+                        viewBox="0 0 24 24">
+                        <path
+                          strokeLinecap="round"
+                          strokeLinejoin="round"
+                          strokeWidth={2}
+                          d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12"
+                        />
+                      </svg>
+                    </div>
+                    <h2 className="text-2xl font-semibold mb-2">
+                      Excel 파일을 업로드하세요
+                    </h2>
+                    <p className="text-muted-foreground mb-6">
+                      .xlsx, .xls 파일을 드래그 앤 드롭하거나 클릭하여 업로드
+                    </p>
+                  </div>
+
+                  <div className="border-2 border-dashed border-muted-foreground/25 rounded-lg p-12 hover:border-primary/50 transition-colors cursor-pointer">
+                    <p className="text-muted-foreground">
+                      파일을 여기에 드롭하거나 클릭하여 선택
+                    </p>
+                  </div>
+
+                  <div className="mt-6">
+                    <Button>파일 선택</Button>
+                  </div>
+                </div>
+              </CardContent>
+            </Card>
+          </div>
+        ) : (
+          /* 시트 뷰어 영역 */
+          <div className="space-y-6">
+            <div className="flex items-center justify-between">
+              <div>
+                <h2 className="text-xl font-semibold">{currentFile.name}</h2>
+                <p className="text-sm text-muted-foreground">
+                  업로드됨: {currentFile.uploadedAt.toLocaleDateString()}
+                </p>
+              </div>
+            </div>
+
+            {/* 시트 렌더링 영역 */}
+            <Card>
+              <CardContent className="p-0">
+                <div className="h-96 bg-white border rounded-lg flex items-center justify-center">
+                  <p className="text-muted-foreground">
+                    Luckysheet 시트가 여기에 렌더링됩니다
+                  </p>
+                </div>
+              </CardContent>
+            </Card>
+          </div>
+        )}
+      </main>
+
+      {/* 프롬프트 입력 (하단 고정) */}
+      {currentFile && (
+        <div className="fixed bottom-4 left-1/2 -translate-x-1/2 w-full max-w-2xl px-4">
+          <Card>
+            <CardContent className="p-4">
+              <div className="flex space-x-2">
+                <input
+                  type="text"
+                  placeholder="AI에게 명령을 입력하세요... (예: A열의 모든 빈 셀을 0으로 채워줘)"
+                  className="flex-1 px-3 py-2 border border-input rounded-md bg-background text-sm placeholder:text-muted-foreground focus:outline-none focus:ring-2 focus:ring-ring"
+                />
+                <Button>실행</Button>
+                <Button variant="outline">히스토리</Button>
+              </div>
+            </CardContent>
+          </Card>
+        </div>
+      )}
+
+      {/* 로딩 오버레이 */}
+      {isLoading && (
+        <div className="fixed inset-0 bg-background/80 backdrop-blur-sm flex items-center justify-center z-50">
+          <Card>
+            <CardContent className="p-6">
+              <div className="flex items-center space-x-4">
+                <div className="animate-spin rounded-full h-6 w-6 border-2 border-primary border-t-transparent"></div>
+                <p className="text-sm">{loadingMessage || "처리 중..."}</p>
+              </div>
+            </CardContent>
+          </Card>
+        </div>
+      )}
+    </div>
+  );
+}
+
+export default App;

src/assets/react.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="35.93" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 228"><path fill="#00D8FF" d="M210.483 73.824a171.49 171.49 0 0 0-8.24-2.597c.465-1.9.893-3.777 1.273-5.621c6.238-30.281 2.16-54.676-11.769-62.708c-13.355-7.7-35.196.329-57.254 19.526a171.23 171.23 0 0 0-6.375 5.848a155.866 155.866 0 0 0-4.241-3.917C100.759 3.829 77.587-4.822 63.673 3.233C50.33 10.957 46.379 33.89 51.995 62.588a170.974 170.974 0 0 0 1.892 8.48c-3.28.932-6.445 1.924-9.474 2.98C17.309 83.498 0 98.307 0 113.668c0 15.865 18.582 31.778 46.812 41.427a145.52 145.52 0 0 0 6.921 2.165a167.467 167.467 0 0 0-2.01 9.138c-5.354 28.2-1.173 50.591 12.134 58.266c13.744 7.926 36.812-.22 59.273-19.855a145.567 145.567 0 0 0 5.342-4.923a168.064 168.064 0 0 0 6.92 6.314c21.758 18.722 43.246 26.282 56.54 18.586c13.731-7.949 18.194-32.003 12.4-61.268a145.016 145.016 0 0 0-1.535-6.842c1.62-.48 3.21-.974 4.76-1.488c29.348-9.723 48.443-25.443 48.443-41.52c0-15.417-17.868-30.326-45.517-39.844Zm-6.365 70.984c-1.4.463-2.836.91-4.3 1.345c-3.24-10.257-7.612-21.163-12.963-32.432c5.106-11 9.31-21.767 12.459-31.957c2.619.758 5.16 1.557 7.61 2.4c23.69 8.156 38.14 20.213 38.14 29.504c0 9.896-15.606 22.743-40.946 31.14Zm-10.514 20.834c2.562 12.94 2.927 24.64 1.23 33.787c-1.524 8.219-4.59 13.698-8.382 15.893c-8.067 4.67-25.32-1.4-43.927-17.412a156.726 156.726 0 0 1-6.437-5.87c7.214-7.889 14.423-17.06 21.459-27.246c12.376-1.098 24.068-2.894 34.671-5.345a134.17 134.17 0 0 1 1.386 6.193ZM87.276 214.515c-7.882 2.783-14.16 2.863-17.955.675c-8.075-4.657-11.432-22.636-6.853-46.752a156.923 156.923 0 0 1 1.869-8.499c10.486 2.32 22.093 3.988 34.498 4.994c7.084 9.967 14.501 19.128 21.976 27.15a134.668 134.668 0 0 1-4.877 4.492c-9.933 8.682-19.886 14.842-28.658 17.94ZM50.35 144.747c-12.483-4.267-22.792-9.812-29.858-15.863c-6.35-5.437-9.555-10.836-9.555-15.216c0-9.322 13.897-21.212 37.076-29.293c2.813-.98 5.757-1.905 8.812-2.773c3.204 10.42 7.406 21.315 12.477 32.332c-5.137 11.18-9.399 22.249-12.634 32.792a134.718 134.718 0 0 1-6.318-1.979Zm12.378-84.26c-4.811-24.587-1.616-43.134 6.425-47.789c8.564-4.958 27.502 2.111 47.463 19.835a144.318 144.318 0 0 1 3.841 3.545c-7.438 7.987-14.787 17.08-21.808 26.988c-12.04 1.116-23.565 2.908-34.161 5.309a160.342 160.342 0 0 1-1.76-7.887Zm110.427 27.268a347.8 347.8 0 0 0-7.785-12.803c8.168 1.033 15.994 2.404 23.343 4.08c-2.206 7.072-4.956 14.465-8.193 22.045a381.151 381.151 0 0 0-7.365-13.322Zm-45.032-43.861c5.044 5.465 10.096 11.566 15.065 18.186a322.04 322.04 0 0 0-30.257-.006c4.974-6.559 10.069-12.652 15.192-18.18ZM82.802 87.83a323.167 323.167 0 0 0-7.227 13.238c-3.184-7.553-5.909-14.98-8.134-22.152c7.304-1.634 15.093-2.97 23.209-3.984a321.524 321.524 0 0 0-7.848 12.897Zm8.081 65.352c-8.385-.936-16.291-2.203-23.593-3.793c2.26-7.3 5.045-14.885 8.298-22.6a321.187 321.187 0 0 0 7.257 13.246c2.594 4.48 5.28 8.868 8.038 13.147Zm37.542 31.03c-5.184-5.592-10.354-11.779-15.403-18.433c4.902.192 9.899.29 14.978.29c5.218 0 10.376-.117 15.453-.343c-4.985 6.774-10.018 12.97-15.028 18.486Zm52.198-57.817c3.422 7.8 6.306 15.345 8.596 22.52c-7.422 1.694-15.436 3.058-23.88 4.071a382.417 382.417 0 0 0 7.859-13.026a347.403 347.403 0 0 0 7.425-13.565Zm-16.898 8.101a358.557 358.557 0 0 1-12.281 19.815a329.4 329.4 0 0 1-23.444.823c-7.967 0-15.716-.248-23.178-.732a310.202 310.202 0 0 1-12.513-19.846h.001a307.41 307.41 0 0 1-10.923-20.627a310.278 310.278 0 0 1 10.89-20.637l-.001.001a307.318 307.318 0 0 1 12.413-19.761c7.613-.576 15.42-.876 23.31-.876H128c7.926 0 15.743.303 23.354.883a329.357 329.357 0 0 1 12.335 19.695a358.489 358.489 0 0 1 11.036 20.54a329.472 329.472 0 0 1-11 20.722Zm22.56-122.124c8.572 4.944 11.906 24.881 6.52 51.026c-.344 1.668-.73 3.367-1.15 5.09c-10.622-2.452-22.155-4.275-34.23-5.408c-7.034-10.017-14.323-19.124-21.64-27.008a160.789 160.789 0 0 1 5.888-5.4c18.9-16.447 36.564-22.941 44.612-18.3ZM128 90.808c12.625 0 22.86 10.235 22.86 22.86s-10.235 22.86-22.86 22.86s-22.86-10.235-22.86-22.86s10.235-22.86 22.86-22.86Z"></path></svg>

src/components/ui/button.tsx

@@ -0,0 +1,53 @@
+import * as React from "react";
+import { cva, type VariantProps } from "class-variance-authority";
+import { cn } from "../../lib/utils";
+
+const buttonVariants = cva(
+  "inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium ring-offset-background transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50",
+  {
+    variants: {
+      variant: {
+        default: "bg-primary text-primary-foreground hover:bg-primary/90",
+        destructive:
+          "bg-destructive text-destructive-foreground hover:bg-destructive/90",
+        outline:
+          "border border-input bg-background hover:bg-accent hover:text-accent-foreground",
+        secondary:
+          "bg-secondary text-secondary-foreground hover:bg-secondary/80",
+        ghost: "hover:bg-accent hover:text-accent-foreground",
+        link: "text-primary underline-offset-4 hover:underline",
+      },
+      size: {
+        default: "h-10 px-4 py-2",
+        sm: "h-9 rounded-md px-3",
+        lg: "h-11 rounded-md px-8",
+        icon: "h-10 w-10",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+);
+
+export interface ButtonProps
+  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
+    VariantProps<typeof buttonVariants> {
+  asChild?: boolean;
+}
+
+const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
+  ({ className, variant, size, asChild = false, ...props }, ref) => {
+    return (
+      <button
+        className={cn(buttonVariants({ variant, size, className }))}
+        ref={ref}
+        {...props}
+      />
+    );
+  }
+);
+Button.displayName = "Button";
+
+export { Button, buttonVariants };

src/components/ui/card.tsx

@@ -0,0 +1,85 @@
+import * as React from "react";
+import { cn } from "../../lib/utils";
+
+const Card = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn(
+      "rounded-lg border bg-card text-card-foreground shadow-sm",
+      className
+    )}
+    {...props}
+  />
+));
+Card.displayName = "Card";
+
+const CardHeader = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn("flex flex-col space-y-1.5 p-6", className)}
+    {...props}
+  />
+));
+CardHeader.displayName = "CardHeader";
+
+const CardTitle = React.forwardRef<
+  HTMLParagraphElement,
+  React.HTMLAttributes<HTMLHeadingElement>
+>(({ className, ...props }, ref) => (
+  <h3
+    ref={ref}
+    className={cn(
+      "text-2xl font-semibold leading-none tracking-tight",
+      className
+    )}
+    {...props}
+  />
+));
+CardTitle.displayName = "CardTitle";
+
+const CardDescription = React.forwardRef<
+  HTMLParagraphElement,
+  React.HTMLAttributes<HTMLParagraphElement>
+>(({ className, ...props }, ref) => (
+  <p
+    ref={ref}
+    className={cn("text-sm text-muted-foreground", className)}
+    {...props}
+  />
+));
+CardDescription.displayName = "CardDescription";
+
+const CardContent = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div ref={ref} className={cn("p-6 pt-0", className)} {...props} />
+));
+CardContent.displayName = "CardContent";
+
+const CardFooter = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn("flex items-center p-6 pt-0", className)}
+    {...props}
+  />
+));
+CardFooter.displayName = "CardFooter";
+
+export {
+  Card,
+  CardHeader,
+  CardFooter,
+  CardTitle,
+  CardDescription,
+  CardContent,
+};

src/index.css

@@ -0,0 +1,48 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+/* 커스텀 스타일 */
+body {
+  font-family: Inter, system-ui, Avenir, Helvetica, Arial, sans-serif;
+  line-height: 1.5;
+  font-weight: 400;
+  color-scheme: light;
+  color: rgba(255, 255, 255, 0.87);
+  background-color: #ffffff;
+  
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+/* 스크롤바 스타일링 */
+::-webkit-scrollbar {
+  width: 6px;
+  height: 6px;
+}
+
+::-webkit-scrollbar-track {
+  background: #f1f1f1;
+}
+
+::-webkit-scrollbar-thumb {
+  background: #c1c1c1;
+  border-radius: 3px;
+}
+
+::-webkit-scrollbar-thumb:hover {
+  background: #a1a1a1;
+}
+
+/* 로딩 애니메이션 */
+@keyframes spin {
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+.animate-spin {
+  animation: spin 1s linear infinite;
+}

src/lib/utils.ts

@@ -0,0 +1,98 @@
+import { type ClassValue, clsx } from "clsx";
+import { twMerge } from "tailwind-merge";
+
+/**
+ * Tailwind CSS 클래스를 병합하는 유틸리티 함수
+ */
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs));
+}
+
+/**
+ * 파일 크기를 사람이 읽기 쉬운 형태로 변환
+ */
+export function formatFileSize(bytes: number): string {
+  if (bytes === 0) return "0 Bytes";
+
+  const k = 1024;
+  const sizes = ["Bytes", "KB", "MB", "GB"];
+  const i = Math.floor(Math.log(bytes) / Math.log(k));
+
+  return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + " " + sizes[i];
+}
+
+/**
+ * 파일 확장자 검증
+ */
+export function validateFileType(fileName: string): boolean {
+  const allowedExtensions = [".xlsx", ".xls", ".csv"];
+  const extension = fileName.toLowerCase().substring(fileName.lastIndexOf("."));
+  return allowedExtensions.includes(extension);
+}
+
+/**
+ * 파일 크기 검증 (MB 단위)
+ */
+export function validateFileSize(fileSize: number, maxSizeMB: number): boolean {
+  const fileSizeMB = fileSize / (1024 * 1024);
+  return fileSizeMB <= maxSizeMB;
+}
+
+/**
+ * 날짜를 사람이 읽기 쉬운 형태로 변환
+ */
+export function formatDate(date: Date): string {
+  return new Intl.DateTimeFormat("ko-KR", {
+    year: "numeric",
+    month: "short",
+    day: "numeric",
+    hour: "2-digit",
+    minute: "2-digit",
+  }).format(date);
+}
+
+/**
+ * UUID 생성
+ */
+export function generateId(): string {
+  return Math.random().toString(36).substring(2) + Date.now().toString(36);
+}
+
+/**
+ * 딜레이 함수
+ */
+export function delay(ms: number): Promise<void> {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}
+
+/**
+ * 셀 범위를 문자열로 변환 (예: A1:B2)
+ */
+export function rangeToCellAddress(
+  startRow: number,
+  startCol: number,
+  endRow?: number,
+  endCol?: number
+): string {
+  const colToLetter = (col: number): string => {
+    let result = "";
+    while (col >= 0) {
+      result = String.fromCharCode((col % 26) + 65) + result;
+      col = Math.floor(col / 26) - 1;
+    }
+    return result;
+  };
+
+  const start = `${colToLetter(startCol)}${startRow + 1}`;
+
+  if (
+    endRow !== undefined &&
+    endCol !== undefined &&
+    (endRow !== startRow || endCol !== startCol)
+  ) {
+    const end = `${colToLetter(endCol)}${endRow + 1}`;
+    return `${start}:${end}`;
+  }
+
+  return start;
+}

src/main.tsx

@@ -0,0 +1,10 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import './index.css'
+import App from './App.tsx'
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+)

src/stores/useAppStore.ts

@@ -0,0 +1,123 @@
+import { create } from "zustand";
+import { devtools } from "zustand/middleware";
+import type {
+  SheetData,
+  FileUploadResult,
+  SelectedRange,
+} from "../types/sheet";
+import type { AIHistory } from "../types/ai";
+import type { User } from "../types/user";
+
+interface AppState {
+  // 사용자 상태
+  user: User | null;
+  isAuthenticated: boolean;
+
+  // 파일 및 시트 상태
+  currentFile: {
+    name: string;
+    size: number;
+    uploadedAt: Date;
+  } | null;
+  sheets: SheetData[];
+  activeSheetId: string | null;
+  selectedRange: SelectedRange | null;
+
+  // UI 상태
+  isLoading: boolean;
+  loadingMessage: string;
+  isHistoryPanelOpen: boolean;
+
+  // AI 상태
+  aiHistory: AIHistory[];
+  isProcessingAI: boolean;
+
+  // 액션들
+  setUser: (user: User | null) => void;
+  setAuthenticated: (authenticated: boolean) => void;
+
+  setCurrentFile: (
+    file: { name: string; size: number; uploadedAt: Date } | null
+  ) => void;
+  setSheets: (sheets: SheetData[]) => void;
+  setActiveSheetId: (sheetId: string | null) => void;
+  setSelectedRange: (range: SelectedRange | null) => void;
+
+  setLoading: (loading: boolean, message?: string) => void;
+  setHistoryPanelOpen: (open: boolean) => void;
+
+  addAIHistory: (history: AIHistory) => void;
+  setProcessingAI: (processing: boolean) => void;
+
+  // 복합 액션들
+  uploadFile: (result: FileUploadResult) => void;
+  resetApp: () => void;
+}
+
+const initialState = {
+  user: null,
+  isAuthenticated: false,
+  currentFile: null,
+  sheets: [],
+  activeSheetId: null,
+  selectedRange: null,
+  isLoading: false,
+  loadingMessage: "",
+  isHistoryPanelOpen: false,
+  aiHistory: [],
+  isProcessingAI: false,
+};
+
+export const useAppStore = create<AppState>()(
+  devtools(
+    (set, get) => ({
+      ...initialState,
+
+      // 사용자 액션
+      setUser: (user) => set({ user }),
+      setAuthenticated: (authenticated) =>
+        set({ isAuthenticated: authenticated }),
+
+      // 파일 및 시트 액션
+      setCurrentFile: (file) => set({ currentFile: file }),
+      setSheets: (sheets) => set({ sheets }),
+      setActiveSheetId: (sheetId) => set({ activeSheetId: sheetId }),
+      setSelectedRange: (range) => set({ selectedRange: range }),
+
+      // UI 액션
+      setLoading: (loading, message = "") =>
+        set({
+          isLoading: loading,
+          loadingMessage: message,
+        }),
+      setHistoryPanelOpen: (open) => set({ isHistoryPanelOpen: open }),
+
+      // AI 액션
+      addAIHistory: (history) =>
+        set((state) => ({
+          aiHistory: [history, ...state.aiHistory].slice(0, 50), // 최대 50개 유지
+        })),
+      setProcessingAI: (processing) => set({ isProcessingAI: processing }),
+
+      // 복합 액션
+      uploadFile: (result) => {
+        if (result.success && result.data) {
+          set({
+            currentFile: {
+              name: result.fileName || "Unknown",
+              size: result.fileSize || 0,
+              uploadedAt: new Date(),
+            },
+            sheets: result.data,
+            activeSheetId: result.data[0]?.id || null,
+          });
+        }
+      },
+
+      resetApp: () => set(initialState),
+    }),
+    {
+      name: "app-store",
+    }
+  )
+);

src/types/ai.ts

@@ -0,0 +1,50 @@
+// AI 관련 타입 정의
+
+export interface CellStyle {
+  backgroundColor?: string;
+  fontWeight?: "bold" | "normal";
+  color?: string;
+  fontSize?: number;
+  textAlign?: "left" | "center" | "right";
+  border?: string;
+}
+
+export type AIAction =
+  | { type: "formula"; range: string; formula: string }
+  | { type: "style"; range: string; style: CellStyle }
+  | {
+      type: "chart";
+      range: string;
+      chartType: "bar" | "line" | "pie";
+      title: string;
+    }
+  | { type: "value"; range: string; value: string | number }
+  | { type: "sort"; range: string; column: string; order: "asc" | "desc" }
+  | { type: "filter"; range: string; condition: string };
+
+export interface AiRequest {
+  prompt: string;
+  range: string;
+  sheetName: string;
+  preview?: string[][];
+  context?: {
+    selectedCells?: string;
+    sheetData?: any;
+  };
+}
+
+export interface AiResponse {
+  actions: AIAction[];
+  explanation?: string;
+  success: boolean;
+  error?: string;
+}
+
+export interface AIHistory {
+  id: string;
+  timestamp: Date;
+  prompt: string;
+  actions: AIAction[];
+  success: boolean;
+  error?: string;
+}

src/types/sheet.ts

@@ -0,0 +1,56 @@
+// 시트 관련 타입 정의
+
+export interface SheetData {
+  id: string;
+  name: string;
+  data: any[][]; // Luckysheet 데이터 형식
+  config?: LuckysheetConfig;
+}
+
+export interface LuckysheetConfig {
+  container: string;
+  title: string;
+  lang: "en" | "ko";
+  data: any[];
+  options?: {
+    showtoolbar?: boolean;
+    showinfobar?: boolean;
+    showsheetbar?: boolean;
+    showstatisticBar?: boolean;
+    allowCopy?: boolean;
+    allowEdit?: boolean;
+    enableAddRow?: boolean;
+    enableAddCol?: boolean;
+  };
+}
+
+export interface FileUploadResult {
+  success: boolean;
+  data?: SheetData[];
+  error?: string;
+  fileName?: string;
+  fileSize?: number;
+}
+
+export interface ExportOptions {
+  format: "xlsx" | "csv" | "json";
+  fileName: string;
+  sheetIndex?: number;
+}
+
+export interface CellPosition {
+  row: number;
+  col: number;
+}
+
+export interface CellRange {
+  startRow: number;
+  startCol: number;
+  endRow: number;
+  endCol: number;
+}
+
+export interface SelectedRange {
+  range: CellRange;
+  sheetId: string;
+}

src/types/user.ts

@@ -0,0 +1,74 @@
+// 사용자 및 구독 관련 타입 정의
+
+export interface User {
+  id: string;
+  email: string;
+  name?: string;
+  avatar?: string;
+  createdAt: Date;
+  lastLoginAt: Date;
+  subscription: Subscription;
+  preferences: UserPreferences;
+}
+
+export interface Subscription {
+  plan: SubscriptionPlan;
+  status: "active" | "cancelled" | "expired";
+  currentPeriodStart: Date;
+  currentPeriodEnd: Date;
+  usage: Usage;
+}
+
+export type SubscriptionPlan = "free" | "lite" | "pro" | "enterprise";
+
+export interface PlanLimits {
+  aiQueries: number;
+  cellCount: number;
+  canDownload: boolean;
+  canCopy: boolean;
+  maxFileSize: number; // MB
+}
+
+export interface Usage {
+  aiQueries: number;
+  cellCount: number;
+  resetDate: Date;
+}
+
+export interface UserPreferences {
+  language: "ko" | "en";
+  historyPanelPosition: "left" | "right";
+  autoSave: boolean;
+  showAnimations: boolean;
+}
+
+export const PLAN_LIMITS: Record<SubscriptionPlan, PlanLimits> = {
+  free: {
+    aiQueries: 30,
+    cellCount: 300,
+    canDownload: false,
+    canCopy: false,
+    maxFileSize: 10,
+  },
+  lite: {
+    aiQueries: 100,
+    cellCount: 1000,
+    canDownload: true,
+    canCopy: true,
+    maxFileSize: 10,
+  },
+  pro: {
+    aiQueries: 500,
+    cellCount: 5000,
+    canDownload: true,
+    canCopy: true,
+    maxFileSize: 50,
+  },
+  enterprise: {
+    aiQueries: Infinity,
+    cellCount: Infinity,
+    canDownload: true,
+    canCopy: true,
+    maxFileSize: Infinity,
+  },
+};

src/vite-env.d.ts

@@ -0,0 +1 @@
+/// <reference types="vite/client" />