init

2025-08-18 09:40:54 +09:00
commit d56d136522
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--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,124 @@
+# ---> Python
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+.idea
+.idea/*
+*.gguf
+*.db
+*.pdf
+
+dist/*
+node_modules/*
+.env
+chroma_db/*
+uploads/*
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*,cover
+.hypothesis/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# pyenv
+.python-version
+
+# celery beat schedule file
+celerybeat-schedule
+
+# SageMath parsed files
+*.sage.py
+
+# dotenv
+.env
+
+# virtualenv
+.venv
+.venv_python3.11
+venv/
+ENV/
+
+# Spyder project settings
+.spyderproject
+
+# Rope project settings
+.ropeproject
+
+# apple dsstore ignore
+.DS_Store
+
+# Cursor Rule Ignore
+.cursor/rules
+
+# Test files
+tests/*
+run_tests.py
+pytest.ini
+
+backend/engines/chatbot_gxp/alembic
+
+*.pdf
+
+backend/engines/research_qa/data/*
--- a/README.md
+++ b/README.md
@@ -0,0 +1,94 @@
+# 웅톡 프론트엔드 (React + Vite)
+
+웅톡(WoongTalk)은 다양한 AI 엔진(챗봇·PDF QA·Text-to-SQL 등)을 한 화면에서 사용할 수 있게 해 주는 통합 프론트엔드입니다. 기존 jQuery SPA 구조를 **React 18 / Vite 7** 기반으로 전면 개편하였습니다.
+
+## 폴더 구조
+
+```
+woongtalk_frontend/
+├── index.html               # Vite 진입점 (root div 및 module script)
+├── style.css                # 전역 스타일 – 기존 CSS 그대로 유지
+├── package.json             # 의존성 & 스크립트
+├── vite.config.js           # Vite 설정
+├── src/                     # React 소스 코드
+│   ├── main.jsx             # React DOM 마운트
+│   ├── App.jsx             # 라우팅·레이아웃 컨테이너
+│   ├── context/
+│   │   └── ToolContext.jsx  # 도구 상태 전역 관리(Context API)
+│   ├── components/
+│   │   └── Sidebar.jsx      # 좌측 메뉴 바
+│   ├── pages/               # 상단 메뉴별 화면
+│   │   ├── ChatPage.jsx     # 채팅 화면(일반/iframe/dev_chatbot)
+│   │   ├── ToolsPage.jsx    # 도구 목록/필터/즐겨찾기
+│   │   ├── LecturePage.jsx  # 강의 모음(정적)
+│   │   └── CommunityPage.jsx# 커뮤니티(정적)
+│   └── tools/               # 개별 도구 전용 컴포넌트·헬퍼
+│       └── dev_chatbot/
+│           ├── constants.js   # 백엔드 API base URL 등
+│           ├── AIService.js   # /chat 호출 래퍼
+│           ├── OCRService.js  # Tesseract.js 기반 OCR
+│           ├── ChatHandler.js # 파일/OCR 처리 후 AIService 호출
+│           └── ChatInput.jsx  # dev_chatbot 전용 채팅 UI
+└── frontend/                # (구)폴더 – iframe 전용 도구의 README만 보관
+    ├── lims_text2sql/
+    └── research_qa/
+```
+
+### 주요 흐름
+1. **ToolsPage** 가 `/tools` API를 조회해 카드 목록을 표시
+2. 카드 클릭 → 선택 도구가 `ToolContext` 에 저장되며 `ChatPage` 로 이동
+3. ChatPage
+   * dev_chatbot → `DevChatInput` 렌더링 (OCR + 멀티파트 업로드 지원)
+   * research_qa / lims_text2sql → 외부 URL을 iframe 으로 임베드
+   * 그 외 → 일반 채팅 UI (textarea + API `/chat` 호출)
+
+## 환경 변수 설정
+
+프로젝트 루트 또는 쉘 설정(`~/.zshrc`)에 다음 값을 지정하세요.
+
+```bash
+# OpenAI Key (필수) – 브라우저에서 직접 호출할 때 사용
+OPENAI_API_KEY="sk-..."
+```
+
+Vite 설정에서 `envPrefix` 를 `OPENAI_` 로 포함했으므로 `VITE_` 접두어 없이도 노출됩니다.
+
+## 실행
+```bash
+npm install       # 의존성 설치
+npm run dev       # 개발 서버 (http://localhost:5173)
+```
+
+## 주요 기능
+1. React 18 + Vite 7 SPA 구조
+2. ChatGPT 도구
+   - 모델 선택: GPT-4o(기본), GPT-4.1-mini, o4-mini
+   - 긴 한국어 답변 + 이모지 + Markdown 렌더링
+   - 입력 후 "생각중… (경과초)" 로딩 표시
+3. 개발챗봇 도구
+   - PDF 파일 사이드바(업로드·삭제)
+   - 이미지 OCR(Tesseract.js) 지원
+4. 강의·커뮤니티 페이지 정적 콘텐츠 표시
+
+## 의존성 주요 목록
+| 라이브러리 | 용도 |
+|------------|------|
+| React 18   | UI |
+| Vite 7     | 번들러 |
+| marked 5   | Markdown → HTML 변환 |
+| tesseract.js| 이미지 OCR |
+
+## 빌드 & 미리보기
+```bash
+npm run build
+npm run preview   # http://localhost:4173
+```
+
+## 빌드 산출물 구조
+프로덕션 빌드시 `dist/` 폴더가 생성되며, 정적 파일을 Nginx·S3 등에 바로 서빙할 수 있습니다.
+
+## 기여 & 문의
+Pull Request 환영합니다. 버그·제안은 Issue로 등록해 주세요.
+
+---
+© 2025 Daewoong AI Lab – All rights reserved.
--- a/index.html
+++ b/index.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html lang="ko">
+<head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>웅톡 AI엔진</title>
+    <link rel="stylesheet" href="/style.css" />
+    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
+</head>
+<body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.jsx"></script>
+</body>
+</html> 
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@@ -0,0 +1,20 @@
+{
+  "name": "woongtalk-frontend",
+  "version": "1.0.0",
+  "private": true,
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite build && vite preview"
+  },
+  "dependencies": {
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "tesseract.js": "^5.1.0",
+    "marked": "^5.1.2"
+  },
+  "devDependencies": {
+    "@vitejs/plugin-react": "^4.0.4",
+    "vite": "^7.0.5"
+  }
+}
--- a/public/favicon.svg
+++ b/public/favicon.svg
@@ -0,0 +1 @@
+ 
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -0,0 +1,113 @@
+import React, { useEffect, useState } from 'react';
+import Sidebar from './components/Sidebar';
+import ChatPage from './pages/ChatPage';
+import ToolsPage from './pages/ToolsPage';
+import LecturePage from './pages/LecturePage';
+import AiNewsPage from './pages/AiNewsPage';
+import QnaPage from './pages/QnaPage';
+import { ToolProvider } from './context/ToolContext';
+import { AuthProvider, useAuth } from './context/AuthContext';
+import LoginPage from './pages/LoginPage';
+import { useTool } from './context/ToolContext';
+
+function TopbarTitle({ currentPage, onNavigate }) {
+  const { selectedTool } = useTool();
+  const { user, logout } = useAuth();
+  const titleMap = { tools: '도구', lecture: '강의', ai_news: 'AI뉴스', qna: '질의응답' };
+  const title = currentPage === 'chat' ? (selectedTool?.name || '채팅') : (titleMap[currentPage] || '');
+  return (
+    <header className="topbar">
+      <span className="page-title">{title}</span>
+      <UserBadge user={user} onLogout={logout} onNavigate={onNavigate} />
+    </header>
+  );
+}
+
+function UserBadge({ user, onLogout, onNavigate }) {
+  const [open, setOpen] = React.useState(false);
+  if (!user) return <a className="login-btn" href="/login" onClick={(e)=>{ e.preventDefault(); onNavigate('login'); }}>로그인</a>;
+  return (
+    <div style={{ position:'relative' }}>
+      <button className="login-btn" onClick={()=>setOpen(!open)}>{user.user_id}</button>
+      {open && (
+        <div style={{ position:'absolute', right:0, top:36, background:'#fff', border:'1px solid #eee', borderRadius:12, padding:'10px 12px', boxShadow:'0 4px 16px rgba(0,0,0,.08)', zIndex: 1000, pointerEvents:'auto' }}>
+          <div style={{ fontSize:'.95rem', color:'#333', marginBottom:8 }}>{user.email}</div>
+          <button onClick={(e)=>{ e.stopPropagation(); onLogout(); setOpen(false); }} style={{ background:'#fff6f6', color:'#e53935', border:'1px solid #ffd6d6', padding:'6px 10px', borderRadius:8, cursor:'pointer' }}>logout</button>
+        </div>
+      )}
+    </div>
+  );
+}
+
+export default function App() {
+  const [currentPage, setCurrentPage] = useState('chat');
+
+  const PAGES = {
+    chat: <ChatPage />,
+    tools: <ToolsPage onNavigate={handleNavigate} />,
+    lecture: <LecturePage />,
+    // community 제거
+    login: <LoginPage onLoggedIn={() => { handleNavigate('chat'); }} />,
+    ai_news: <AiNewsPage />,
+    qna: <QnaPage />,
+  };
+
+  // URL → 상태 동기화 (초기 진입 및 뒤로가기 대응)
+  useEffect(() => {
+    const path = window.location.pathname.replace(/^\/+/, '');
+    const menuPaths = { chatting: 'chat', tools: 'tools', lecture: 'lecture', ai_news: 'ai_news', qna: 'qna', login: 'login' };
+    const maybeMenu = menuPaths[path];
+    if (maybeMenu) {
+      setCurrentPage(maybeMenu);
+    } else if (path === '') {
+      setCurrentPage('chat');
+    } else {
+      // 카드 경로일 때는 채팅 페이지로 전환
+      setCurrentPage('chat');
+    }
+  }, []);
+
+  // 브라우저 뒤/앞으로가기(popstate) 시 URL에 맞게 화면 전환
+  useEffect(() => {
+    const onPopState = () => {
+      const path = window.location.pathname.replace(/^\/+/, '');
+      const menuPaths = { chatting: 'chat', tools: 'tools', lecture: 'lecture', ai_news: 'ai_news', qna: 'qna', login: 'login' };
+      const maybeMenu = menuPaths[path];
+      if (maybeMenu) {
+        setCurrentPage(maybeMenu);
+      } else if (path === '') {
+        setCurrentPage('chat');
+      } else {
+        // 카드 경로는 채팅 화면으로
+        setCurrentPage('chat');
+      }
+    };
+    window.addEventListener('popstate', onPopState);
+    return () => window.removeEventListener('popstate', onPopState);
+  }, []);
+
+  // 메뉴 전환 시 URL 경로 갱신
+  function handleNavigate(page) {
+    setCurrentPage(page);
+    const menuToPath = { chat: 'chatting', tools: 'tools', lecture: 'lecture', ai_news: 'ai_news', qna: 'qna', login: 'login' };
+    const p = menuToPath[page] || '';
+    const newPath = `/${p}`;
+    if (window.location.pathname !== newPath) {
+      window.history.pushState({}, '', newPath);
+    }
+  }
+
+  return (
+    <AuthProvider>
+      <ToolProvider>
+        <div className="container">
+          <Sidebar current={currentPage} onChange={handleNavigate} />
+          <main className="main-content">
+            <TopbarTitle currentPage={currentPage} onNavigate={handleNavigate} />
+            {PAGES[currentPage]}
+          </main>
+        </div>
+      </ToolProvider>
+    </AuthProvider>
+  );
+} 
--- a/src/components/Sidebar.jsx
+++ b/src/components/Sidebar.jsx
@@ -0,0 +1,32 @@
+import React from 'react';
+import { useTool } from '../context/ToolContext';
+
+const MENU = [
+  { id: 'chat', label: '채팅' },
+  { id: 'tools', label: '도구' },
+  { id: 'lecture', label: '강의' },
+  { id: 'ai_news', label: 'AI뉴스' },
+  { id: 'qna', label: '질의응답' },
+];
+
+export default function Sidebar({ current, onChange }) {
+  const { setSelectedTool } = useTool();
+  return (
+    <aside className="sidebar">
+      <div className="logo" onClick={() => { setSelectedTool(null); try { localStorage.removeItem('selectedToolId'); } catch {}; onChange('chat'); }} style={{cursor:'pointer'}}>웅톡</div>
+      <nav className="menu">
+        <ul>
+          {MENU.map((item) => (
+            <li
+              key={item.id}
+              className={`menu-item ${current === item.id ? 'active' : ''}`}
+              onClick={() => { onChange(item.id); }}
+            >
+              {item.label}
+            </li>
+          ))}
+        </ul>
+      </nav>
+    </aside>
+  );
+} 
--- a/src/context/AuthContext.jsx
+++ b/src/context/AuthContext.jsx
@@ -0,0 +1,52 @@
+import React, { createContext, useContext, useEffect, useState } from 'react';
+
+const AuthContext = createContext();
+
+export function AuthProvider({ children }) {
+  const [user, setUser] = useState(null); // { user_id, email }
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    try {
+      const saved = JSON.parse(localStorage.getItem('auth_user') || 'null');
+      if (saved && saved.user_id) setUser(saved);
+    } catch {}
+    setLoading(false);
+  }, []);
+
+  const login = async (email, password) => {
+    const res = await fetch('http://localhost:8010/auth/login', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      credentials: 'include',
+      body: JSON.stringify({ email, password }),
+    });
+    if (!res.ok) {
+      // 서버가 에러 메시지를 JSON 으로 보낼 수도 있으므로 파싱 시도
+      let msg = '로그인 실패';
+      try { msg = (await res.json())?.detail || msg; } catch { /* ignore */ }
+      throw new Error(msg);
+    }
+    const data = await res.json(); // { user_id, email }
+    setUser(data);
+    try { localStorage.setItem('auth_user', JSON.stringify(data)); } catch {}
+    return data;
+  };
+
+  const logout = async () => {
+    try {
+      await fetch('http://localhost:8010/auth/logout', { method: 'POST', credentials: 'include' });
+    } catch {}
+    setUser(null);
+    try { localStorage.removeItem('auth_user'); } catch {}
+  };
+
+  const value = { user, loading, login, logout };
+  return <AuthContext.Provider value={value}>{children}</AuthContext.Provider>;
+}
+
+export function useAuth() {
+  return useContext(AuthContext);
+}
+
+
--- a/src/context/ToolContext.jsx
+++ b/src/context/ToolContext.jsx
@@ -0,0 +1,95 @@
+import React, { createContext, useState, useContext, useEffect } from 'react';
+
+const ToolContext = createContext();
+
+export function ToolProvider({ children }) {
+  const [tools, setTools] = useState([]);
+  const [selectedTool, setSelectedTool] = useState(null);
+  const [favorites, setFavorites] = useState(() => {
+    try {
+      return JSON.parse(localStorage.getItem('favorites')) || [];
+    } catch {
+      return [];
+    }
+  });
+
+  useEffect(() => {
+    async function load() {
+      try {
+        const res = await fetch('http://localhost:8010/tools');
+        const data = await res.json();
+        // 'GxP 챗봇'과 'chatgpt' 카드는 도구 목록에서 제거
+        const filtered = (Array.isArray(data) ? data : []).filter((tool) => !['chatbot_gxp','chatgpt'].includes(tool.id));
+        const mapped = filtered.map((tool) => {
+          const category = ['전체'];
+          if (['dev_chatbot', 'doc_translation'].includes(tool.id)) {
+            category.push('오픈AI');
+          } else if (['lims_text2sql', 'research_qa'].includes(tool.id)) {
+            category.push('내부AI');
+          }
+          return { ...tool, category };
+        });
+        setTools(mapped);
+        // 선택된 도구 복원 (마지막 카드 유지)
+        try {
+          const savedId = localStorage.getItem('selectedToolId');
+          if (savedId) {
+            const found = mapped.find((t) => t.id === savedId);
+            if (found) setSelectedTool(found);
+          }
+          // URL 경로가 카드 ID일 경우 해당 카드로 강제 설정 (예: /dev_chatbot)
+          const path = window.location.pathname.replace(/^\/+/, '');
+          const menuPaths = new Set(['chatting', 'tools', 'lecture', 'community', '']);
+          if (path && !menuPaths.has(path)) {
+            const fromUrl = mapped.find((t) => t.id === path);
+            if (fromUrl) setSelectedTool(fromUrl);
+          }
+        } catch {}
+        // 즐겨찾기에 남아 있을 수 있는 제거 대상 정리
+        setFavorites((prev) => prev.filter((id) => !['chatbot_gxp','chatgpt'].includes(id)));
+      } catch (_) {}
+    }
+    load();
+  }, []);
+
+  useEffect(() => {
+    localStorage.setItem('favorites', JSON.stringify(favorites));
+  }, [favorites]);
+
+  // 선택된 도구 지속화: 메뉴 이동 후에도 마지막 카드가 유지되도록 저장
+  useEffect(() => {
+    try {
+      if (selectedTool?.id) localStorage.setItem('selectedToolId', selectedTool.id);
+    } catch {}
+  }, [selectedTool?.id]);
+
+  const toggleFavorite = (id) => {
+    setFavorites((prev) => (prev.includes(id) ? prev.filter((f) => f !== id) : [...prev, id]));
+  };
+  
+  // 카드 선택 시 URL을 카드 경로로 반영 (메뉴 페이지가 아닌 경우)
+  useEffect(() => {
+    if (!selectedTool?.id) return;
+    const path = `/${selectedTool.id}`;
+    const menuPaths = new Set(['/chatting','/tools','/lecture','/community','/']);
+    if (!menuPaths.has(window.location.pathname) && window.location.pathname === path) return;
+    // 도구 화면에서 카드 선택 시 URL을 카드 경로로 업데이트
+    if (window.location.pathname !== path) {
+      window.history.pushState({}, '', path);
+    }
+  }, [selectedTool?.id]);
+
+  const value = {
+    tools,
+    selectedTool,
+    setSelectedTool,
+    favorites,
+    toggleFavorite,
+  };
+
+  return <ToolContext.Provider value={value}>{children}</ToolContext.Provider>;
+}
+
+export function useTool() {
+  return useContext(ToolContext);
+} 
--- a/src/main.jsx
+++ b/src/main.jsx
@@ -0,0 +1,9 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import App from './App';
+
+ReactDOM.createRoot(document.getElementById('root')).render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+); 
--- a/src/pages/AiNewsPage.jsx
+++ b/src/pages/AiNewsPage.jsx
@@ -0,0 +1,173 @@
+import React, { useEffect, useRef, useState } from 'react';
+import { useAuth } from '../context/AuthContext';
+
+export default function AiNewsPage() {
+  const { user } = useAuth();
+  const [news, setNews] = useState([]);
+  const [newsOffset, setNewsOffset] = useState(0);
+  const [newsLoading, setNewsLoading] = useState(false);
+  const [showNewsEditor, setShowNewsEditor] = useState(false);
+  const [newsUrl, setNewsUrl] = useState('');
+  const contentRef = useRef(null);
+  const [initialized, setInitialized] = useState(false);
+  const [readyForScroll, setReadyForScroll] = useState(false);
+
+  useEffect(() => {
+    (async () => {
+      await loadNews(0, false);
+      // 초기 진입 시 리스트 하단(최신)으로 이동
+      requestAnimationFrame(() => {
+        const el = contentRef.current;
+        if (el) el.scrollTop = el.scrollHeight;
+        // 이미지 로드 등으로 높이가 늘어나는 경우를 대비해 한 번 더 보정
+        setTimeout(() => {
+          const el2 = contentRef.current;
+          if (el2) el2.scrollTop = el2.scrollHeight;
+          // 한 프레임 더 보장 후 스크롤 핸들러 활성화
+          requestAnimationFrame(() => {
+            setInitialized(true);
+            setReadyForScroll(true);
+          });
+        }, 60);
+      });
+    })();
+  }, []);
+
+  useEffect(() => {
+    if (!initialized) return;
+    const el = contentRef.current;
+    if (!el) return;
+    const onScroll = () => {
+      if (!readyForScroll) return; // 초기 자동 스크롤 완료 전에는 무시
+      if (el.scrollTop <= 20 && !newsLoading) {
+        loadNews(newsOffset, true);
+      }
+    };
+    el.addEventListener('scroll', onScroll);
+    return () => el.removeEventListener('scroll', onScroll);
+  }, [initialized, readyForScroll, newsOffset, newsLoading]);
+
+  const loadNews = async (offset = 0, prepend = false) => {
+    if (newsLoading) return;
+    setNewsLoading(true);
+    try {
+      const res = await fetch(`http://localhost:8010/community/ai_news?offset=${offset}&limit=10`);
+      if (!res.ok) return;
+      const data = await res.json();
+      const items = (data.items || []).reverse();
+      if (prepend) {
+        const el = contentRef.current;
+        const prevH = el ? el.scrollHeight : document.documentElement.scrollHeight;
+        setNews((prev) => [...items, ...prev]);
+        setTimeout(() => {
+          if (el) {
+            el.scrollTop = el.scrollHeight - prevH;
+          } else {
+            const newH = document.documentElement.scrollHeight;
+            window.scrollTo(0, newH - prevH);
+          }
+        }, 0);
+      } else {
+        setNews(items);
+        setTimeout(() => {
+          const el = contentRef.current;
+          if (el) el.scrollTop = el.scrollHeight; else window.scrollTo(0, document.documentElement.scrollHeight);
+        }, 0);
+      }
+      const nextOffset = data.nextOffset || 0;
+      setNewsOffset(nextOffset);
+      return nextOffset;
+    } finally {
+      setNewsLoading(false);
+    }
+  };
+
+  // 초기 스크롤 보정 루프는 제거: 진입 직후 하단으로 고정만 수행
+
+  const submitNews = async () => {
+    if (!newsUrl.trim()) return;
+    await fetch('http://localhost:8010/community/ai_news', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ url: newsUrl, author_id: String(user?.user_id || ''), author_email: user?.email || null }),
+    });
+    setShowNewsEditor(false);
+    setNewsUrl('');
+    loadNews(0);
+  };
+
+  return (
+    <section className="page page-ai-news" style={{ flex: 1, display: 'flex', flexDirection: 'column', paddingTop: '24px' }}>
+      <main className="community-content" ref={contentRef} style={{ overflowY: 'auto', flex: 1 }}>
+        <div style={{ padding: '0 20px 50px 20px' }}>
+          {news.map((n) => (
+            <div key={n.id} style={{ background: '#fff', border: '1px solid #eee', borderRadius: 12, padding: 12, marginBottom: 12 }}>
+              <div style={{ display: 'flex', gap: 12 }}>
+                {n.meta?.image ? (
+                  <img src={n.meta.image} alt="thumb" style={{ width: 96, height: 96, objectFit: 'cover', borderRadius: 8 }} />
+                ) : null}
+                <div style={{ flex: 1 }}>
+                  <a href={n.meta?.url || n.url} target="_blank" rel="noreferrer" style={{ fontWeight: 600, color: '#1976d2', textDecoration: 'none' }}>
+                    {n.meta?.title || n.url}
+                  </a>
+                  <div style={{ marginTop: 6, color: '#555', lineHeight: 1.5 }}>{n.meta?.description}</div>
+                  <div style={{ marginTop: 6, color: '#999', fontSize: '.9rem' }}>{new Date(n.created_at).toISOString().slice(0, 10)}</div>
+                </div>
+              </div>
+            </div>
+          ))}
+        </div>
+        {newsLoading && (
+          <div className="loading-overlay">
+            <span className="loading-text">뉴스 로딩중</span>
+            <span className="loading-dots">
+              <span className="loading-dot"></span>
+              <span className="loading-dot"></span>
+              <span className="loading-dot"></span>
+            </span>
+          </div>
+        )}
+        {user && !showNewsEditor && (
+          <button
+            onClick={() => setShowNewsEditor(true)}
+            style={{ position: 'fixed', right: 24, bottom: 24, background: '#ff9800', color: '#fff', border: 'none', padding: '12px 16px', borderRadius: 18, cursor: 'pointer', boxShadow: '0 4px 16px rgba(0,0,0,.15)', zIndex: 1000 }}
+          >
+            뉴스등록
+          </button>
+        )}
+        {showNewsEditor && user && (
+          <div
+            style={{ position: 'fixed', right: 24, bottom: 84, zIndex: 1001, width: 'min(560px, calc(100vw - 40px))', background: '#fff', border: '1px solid #ffd6c2', borderRadius: 12, padding: 12, boxShadow: '0 6px 18px rgba(0,0,0,.15)' }}
+          >
+            <input
+              value={newsUrl}
+              onChange={(e) => setNewsUrl(e.target.value)}
+              placeholder="뉴스 URL을 입력하세요"
+              style={{ width: 'calc(100% - 25px)', marginBottom: 8, padding: '10px 12px', borderRadius: 8, border: '1px solid #ffd6c2' }}
+              onKeyDown={(e) => {
+                if (e.key === 'Enter') {
+                  e.preventDefault();
+                  submitNews();
+                }
+              }}
+            />
+            <div style={{ display: 'flex', gap: 8, justifyContent: 'flex-end' }}>
+              <button
+                onClick={() => {
+                  setShowNewsEditor(false);
+                  setNewsUrl('');
+                }}
+                style={{ background: '#fff', border: '1px solid #ddd', padding: '8px 12px', borderRadius: 8 }}
+              >
+                취소
+              </button>
+              <button onClick={submitNews} style={{ background: '#ff9800', color: '#fff', border: 'none', padding: '8px 12px', borderRadius: 8 }}>등록</button>
+            </div>
+          </div>
+        )}
+      </main>
+    </section>
+  );
+}
+
+
--- a/src/pages/ChatPage.jsx
+++ b/src/pages/ChatPage.jsx
@@ -0,0 +1,547 @@
+import React, { useState, useEffect, useRef } from 'react';
+import { useTool } from '../context/ToolContext';
+import DevChatInput from '../tools/dev_chatbot/ChatInput.jsx';
+import { marked } from 'marked';
+marked.setOptions({ mangle:false, headerIds:false });
+import { fetchOpenAIChat, fetchOpenAIImage, classifyRequest } from '../services/openaiService';
+
+// === Chat History Panel 컴포넌트 추가 ===
+function ChatHistoryPanel({ toolId }) {
+  const [open, setOpen] = React.useState(false);
+  const [messages, setMessages] = React.useState([]);
+
+  // 패널이 열릴 때마다 로컬스토리지에서 메시지 불러오기
+  React.useEffect(() => {
+    if (!open) return;
+    try {
+      const saved = JSON.parse(localStorage.getItem(`messages_${toolId}`) || '[]');
+      setMessages(Array.isArray(saved) ? saved : []);
+    } catch {
+      setMessages([]);
+    }
+  }, [toolId, open]);
+
+  return (
+    <>
+      <button className="chat-history-toggle" onClick={() => setOpen(!open)} aria-label="대화 히스토리 토글">
+        <span></span>
+        <span></span>
+        <span></span>
+      </button>
+      <div className={`chat-history-panel ${open ? 'show' : ''}`}>
+        <div style={{ padding: '12px', fontWeight: 'bold', borderBottom: '1px solid #ffe8d5' }}>대화 히스토리</div>
+        <ul className="chat-history-list">
+          {messages.length === 0 && (
+            <li style={{ padding: '12px', color: '#999' }}>대화 기록이 없습니다.</li>
+          )}
+          {messages.map((m, idx) => (
+            <li key={idx} className="history-item">
+              <div className="history-content">{String(m.content).slice(0, 36)}{String(m.content).length > 36 ? '…' : ''}</div>
+              <div className="history-time">{m.time}</div>
+            </li>
+          ))}
+        </ul>
+      </div>
+    </>
+  );
+}
+
+function FileSidebar() {
+  const [files, setFiles] = useState([]);
+
+  const loadFiles = async () => {
+    try {
+      const res = await fetch('http://localhost:8010/files');
+      const data = await res.json();
+      setFiles(data.files || []);
+    } catch (_) {}
+  };
+
+  useEffect(() => {
+    loadFiles();
+  }, []);
+
+  const handleDelete = async (fname) => {
+    if (!window.confirm(`${fname} 파일을 삭제하시겠습니까?`)) return;
+    await fetch(`http://localhost:8010/file?filename=${encodeURIComponent(fname)}`, { method: 'DELETE' });
+    loadFiles();
+  };
+
+  const handleUpload = async (e) => {
+    const files = Array.from(e.target.files || []);
+    if (!files.length) return;
+    const formData = new FormData();
+    files.forEach((f) => formData.append('files', f));
+    await fetch('http://localhost:8010/upload_pdf', { method: 'POST', body: formData });
+    loadFiles();
+  };
+
+  return (
+    <div className="file-sidebar">
+      <div className="file-sidebar-header" style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
+        <span>파일 리스트</span>
+        <button className="file-add-btn" onClick={() => document.getElementById('dev-file-input').click()}>+</button>
+        <input id="dev-file-input" type="file" multiple style={{ display: 'none' }} onChange={handleUpload} />
+      </div>
+      <ul className="file-list">
+        {files.map((f) => (
+          <li key={f} title={f} style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
+            <span style={{ flex: 1, overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>{f}</span>
+            <button className="file-del-btn" onClick={() => handleDelete(f)}>
+              ✕
+            </button>
+          </li>
+        ))}
+      </ul>
+    </div>
+  );
+}
+
+export default function ChatPage() {
+  const { selectedTool } = useTool();
+  const [messages, setMessages] = useState(() => {
+    try {
+      const toolIdInitial = selectedTool?.id || 'chatgpt';
+      const saved = JSON.parse(localStorage.getItem(`messages_${toolIdInitial}`) || '[]');
+      return Array.isArray(saved) ? saved.filter(m=>m.type!=='loading') : [];
+    } catch {
+      return [];
+    }
+  });
+  const [input, setInput] = useState('');
+  const [chatModel, setChatModel] = useState('GPT-5');
+  const inputRef = useRef(null);
+  const chatEndRef = useRef(null);
+
+  // 기본 카드: ChatGPT (도구 목록에서 제거되었기 때문에 selectedTool 이 없으면 ChatGPT로 동작)
+  const defaultChatTool = { id: 'chatgpt', name: 'ChatGPT', description: '일반 대화 및 모델 선택 기능을 제공합니다.' };
+  const activeTool = selectedTool || defaultChatTool;
+
+  // 히스토리 패널용 공통 값
+  const toolId = selectedTool?.id || 'chatgpt';
+  const historyPanel = <ChatHistoryPanel toolId={toolId} />;
+
+  useEffect(() => {
+    // 카드 전환 시 해당 카드의 저장된 대화 불러오기 (기본: chatgpt)
+    const toolId = selectedTool?.id || 'chatgpt';
+    try {
+      const key = `messages_${toolId}`;
+      const saved = JSON.parse(localStorage.getItem(key) || '[]');
+      setMessages(Array.isArray(saved) ? saved.filter(m=>m.type!=='loading') : []);
+    } catch {
+      setMessages([]);
+    }
+  }, [selectedTool?.id]);
+
+  useEffect(() => {
+    // scroll to bottom
+    chatEndRef.current?.scrollIntoView({ behavior: 'smooth' });
+  }, [messages]);
+
+  // 대화 변경 시 로컬스토리지에 저장 (기본: chatgpt)
+  useEffect(() => {
+    const toolId = selectedTool?.id || 'chatgpt';
+    try { localStorage.setItem(`messages_${toolId}`, JSON.stringify(messages)); } catch {}
+  }, [messages, selectedTool?.id]);
+
+
+  // iframe 도구 처리
+  const iframeTools = {
+    research_qa: 'http://yongin-qa-chatbot.daewoongai.com/',
+    lims_text2sql: 'http://3.38.184.255:8080/',
+  };
+
+  if (selectedTool && iframeTools[selectedTool.id]) {
+    return (
+      <section className="page page-chat" style={{ flex: 1, display: 'flex', flexDirection: 'column', position:'relative' }}>
+        {historyPanel}
+        <iframe
+          src={iframeTools[selectedTool.id]}
+          className="external-iframe"
+          title="external"
+          style={{ flex: 1 }}
+        />
+      </section>
+    );
+  }
+
+  if (selectedTool && selectedTool.id === 'dev_chatbot') {
+    return (
+      <section className="page page-chat has-file-sidebar" style={{ flex: 1, position: 'relative', display:'flex', justifyContent:'flex-start', alignItems:'stretch' }}>
+        {historyPanel}
+        <FileSidebar />
+        {/* DevChatInput renders header, messages, input */}
+        <DevChatInput />
+      </section>
+    );
+  }
+
+  // 문서번역 도구: Word 파일 업로드/목록/다운로드/삭제 + 실시간 텍스트 번역 지원
+  if (selectedTool && selectedTool.id === 'doc_translation') {
+    return (
+      <section className="page page-chat has-file-sidebar" style={{ flex: 1, position: 'relative', display:'flex', justifyContent:'flex-start', alignItems:'stretch' }}>
+        {historyPanel}
+        <DocTranslationSidebar />
+        <DocTranslationChat />
+      </section>
+    );
+  }
+
+  const sendMessage = async () => {
+    if (!input.trim()) return;
+    const userMsg = { type: 'user', content: input.trim(), time: new Date().toLocaleTimeString() };
+    setMessages((prev) => [...prev, userMsg]);
+    setInput('');
+    if (inputRef.current) {
+      inputRef.current.style.height = '32px';
+    }
+
+    // loading placeholder
+    const loadingMsg = { type: 'loading', start: Date.now() };
+    setMessages((prev) => [...prev, loadingMsg]);
+
+    // interval to update elapsed seconds
+    const loadingInterval = setInterval(() => {
+      setMessages((prev) => {
+        const last = prev[prev.length - 1];
+        if (last && last.type === 'loading') return [...prev]; // trigger rerender
+        clearInterval(loadingInterval);
+        return prev;
+      });
+    }, 1000);
+
+    // backend 호출
+    try {
+      let botContent = '';
+      if (activeTool.id === 'chatgpt') {
+        const modelMap = {
+          'GPT-5': 'gpt-5',
+          'GPT-5-mini': 'gpt-5-mini',
+          'GPT-5-nano': 'gpt-5-nano',
+          'GPT-4o': 'gpt-4o',
+          'GPT-4.1-mini': 'gpt-4o-mini',
+          'o4-mini': 'o4-mini',
+        };
+        const model = modelMap[chatModel] || modelMap['GPT-5'];
+        const sysPrompt = `당신은 한국어로 답하는 뛰어난 AI 어시스턴트입니다.
+
+✅ 반드시 사실(팩트)에 기반하여 거짓 정보 없이 답하십시오.
+✅ 먼저 내부적으로 생각(Chain-of-Thought)을 수행한 뒤, 이용자에게는 정리된 결과만 보여 주세요.
+✅ 충분한 길이(최소 5문단)로, 필요 시 제목·소제목·순서/불릿 목록·코드 블록을 포함한 **Markdown** 형식을 사용하십시오.
+✅ 이해를 돕기 위해 😃, 📌, 💡 등 적절한 이모지를 활용하십시오.
+✅ 요약만 제시하지 말고, 예시·배경 설명·추가 정보를 상세히 제공합니다.
+✅ 가능하다면 신뢰할 수 있는 공개 출처 URL 또는 참고문헌을 맨 아래에 제시하십시오.`;
+        // 이미지 생성 의도 간단 감지 (예: 이미지/그려줘/생성해줘/그림/사진 등 키워드)
+        // 1차: 키워드 룰기반, 2차: 모델 분류기로 보강 (샘플코드 방식)
+        let wantsImage = /\b(이미지|그려줘|그림|사진|image|draw|generate\s+image|그려|create\s+an?\s+image|render)\b/i.test(userMsg.content);
+        if (!wantsImage) {
+          try {
+            const cls = await classifyRequest(userMsg.content, 'gpt-5');
+            wantsImage = cls === 'image';
+          } catch (_) { /* ignore */ }
+        }
+        if (wantsImage) {
+          try {
+            const dataUrl = await fetchOpenAIImage(userMsg.content, 'gpt-image-1', { size: '1024x1024' });
+            // 이미지 응답은 전용 타입으로 렌더링
+            clearInterval(loadingInterval);
+            const botMsg = { type: 'image', content: dataUrl, time: new Date().toLocaleTimeString() };
+            setMessages((prev) => {
+              const copy = [...prev];
+              const idx = copy.findIndex((m) => m.type === 'loading');
+              if (idx !== -1) copy[idx] = botMsg; else copy.push(botMsg);
+              return copy;
+            });
+            return; // 조기 반환 (텍스트 처리 불필요)
+          } catch (err) {
+            // 이미지 생성 실패 시 텍스트 답변으로 폴백
+            botContent = await fetchOpenAIChat([
+              { role: 'system', content: sysPrompt },
+              { role: 'user', content: userMsg.content },
+            ], model, { });
+          }
+        } else {
+          botContent = await fetchOpenAIChat([
+            { role: 'system', content: sysPrompt },
+            { role: 'user', content: userMsg.content },
+          ], model, { });
+        }
+      } else {
+        const formData = new FormData();
+        formData.append('message', userMsg.content);
+        formData.append('tool_id', activeTool.id);
+        const res = await fetch('http://localhost:8010/chat', { method: 'POST', body: formData });
+        const data = await res.json();
+        botContent = data.response;
+      }
+      clearInterval(loadingInterval);
+      const botMsg = { type: 'bot', content: botContent, time: new Date().toLocaleTimeString(), markdown:true };
+      // replace loading placeholder
+      setMessages((prev) => {
+        const copy = [...prev];
+        const idx = copy.findIndex((m) => m.type === 'loading');
+        if (idx !== -1) copy[idx] = botMsg;
+        return copy;
+      });
+    } catch (e) {
+      setMessages((prev) => [...prev, { type: 'bot', content: '서버 오류', time: new Date().toLocaleTimeString() }]);
+    }
+  };
+
+  return (
+    <section className="page page-chat" style={{ flex: 1, display:'flex', flexDirection:'column', position:'relative' }}>
+      {historyPanel}
+      <div className="chat-center" style={{ width: '100%', maxWidth: 800 }}>
+        <div className="tool-chat-header">
+          <div className="tool-chat-title">{activeTool.name}</div>
+          <div className="tool-chat-desc">{activeTool.description}</div>
+        </div>
+        {messages.map((m, idx) => (
+          <div key={idx} className={`chat-message ${
+            m.type === 'user' ? 'user-message' : (
+              m.type === 'bot' || m.type === 'image' ? 'bot-message' : 'bot-message progress'
+            )}`}>
+            {m.type==='loading' ? (
+              <div className="message-content" style={{color:'#888',fontStyle:'italic'}}>생각중...</div>
+            ) : m.type==='image' ? (
+              <div className="message-content"><img src={m.content} alt="generated" style={{ maxWidth:'100%', borderRadius:12 }}/></div>
+            ) : m.markdown ? (
+              <div className="message-content" dangerouslySetInnerHTML={{ __html: marked.parse(m.content) }} />
+            ) : (
+              <div className="message-content">{m.content}</div>
+            )}
+            <div className="message-time">{ m.type==='loading' ? `${Math.floor((Date.now()-m.start)/1000)}s` : m.time}</div>
+          </div>
+        ))}
+        <div ref={chatEndRef} />
+      </div>
+
+      <div className="chat-input-wrapper">
+        <div className="chat-input-area">
+          {activeTool.id==='chatgpt' && (
+            <select value={chatModel} onChange={(e)=>setChatModel(e.target.value)} style={{ marginRight:12, height:36, borderRadius:12, border:'1px solid #ffd6c2', color:'#ff6b4a' }}>
+              <option value="GPT-5">GPT-5</option>
+              <option value="GPT-5-mini">GPT-5-mini</option>
+              <option value="GPT-5-nano">GPT-5-nano</option>
+              <option value="GPT-4o">GPT-4o</option>
+              <option value="GPT-4.1-mini">GPT-4.1-mini</option>
+              <option value="o4-mini">o4-mini</option>
+            </select>
+          )}
+          <textarea
+            ref={inputRef}
+            className="chat-input"
+            rows={1}
+            value={input}
+            onChange={(e) => setInput(e.target.value)}
+            onInput={(e)=>{ e.target.style.height='auto'; e.target.style.height=Math.min(e.target.scrollHeight,240)+"px"; }}
+            placeholder="메시지 입력"
+            style={{ flex: 1, resize: 'none', border: 'none', outline: 'none', overflowY:'auto' }}
+            onKeyDown={(e) => {
+              if (e.key === 'Enter' && !e.shiftKey) {
+                e.preventDefault();
+                sendMessage();
+              }
+            }}
+          />
+          <button className="chat-send" onClick={sendMessage} disabled={!input.trim()}>
+            ↑
+          </button>
+        </div>
+      </div>
+    </section>
+  );
+} 
+
+function DocTranslationSidebar() {
+  const [files, setFiles] = useState([]);
+
+  const extractRealFilename = (filename) => {
+    const regex = /^\[doc_translation\]_admin_\d{14,17}_(.+)$/;
+    const match = filename.match(regex);
+    return match ? match[1] : filename;
+  };
+
+  const loadFiles = async () => {
+    try {
+      const res = await fetch('http://localhost:8010/doc_translation/files');
+      const data = await res.json();
+      setFiles(Array.isArray(data) ? data : []);
+    } catch (_) {}
+  };
+
+  useEffect(() => { loadFiles(); }, []);
+
+  const handleUpload = async () => {
+    const input = document.createElement('input');
+    input.type = 'file';
+    input.accept = '.doc,.docx';
+    input.multiple = true;
+    input.style.display = 'none';
+    document.body.appendChild(input);
+    input.onchange = async () => {
+      const files = Array.from(input.files || []);
+      if (!files.length) return;
+      const formData = new FormData();
+      files.forEach((f) => formData.append('files', f));
+      try {
+        await fetch('http://localhost:8010/doc_translation/upload_doc', { method: 'POST', body: formData });
+      } finally {
+        document.body.removeChild(input);
+        loadFiles();
+      }
+    };
+    input.click();
+  };
+
+  const handleDelete = async (serverFilename) => {
+    if (!window.confirm(`${extractRealFilename(serverFilename)} 파일을 삭제하시겠습니까?`)) return;
+    await fetch(`http://localhost:8010/doc_translation/files/${encodeURIComponent(serverFilename)}`, { method: 'DELETE' });
+    loadFiles();
+  };
+
+  const handleDownload = async (filename) => {
+    const res = await fetch(`http://localhost:8010/doc_translation/download/${encodeURIComponent(filename)}`);
+    if (!res.ok) return alert('다운로드 실패');
+    const blob = await res.blob();
+    const url = URL.createObjectURL(blob);
+    const a = document.createElement('a');
+    a.href = url;
+    a.download = extractRealFilename(filename);
+    document.body.appendChild(a);
+    a.click();
+    URL.revokeObjectURL(url);
+    document.body.removeChild(a);
+  };
+
+  return (
+    <div className="file-sidebar">
+      <div className="file-sidebar-header" style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
+        <span>파일 리스트</span>
+        <button className="file-add-btn" onClick={handleUpload}>+</button>
+      </div>
+      <ul className="file-list">
+        {files.map((f) => (
+          <li key={f.filename} className={f.has_result ? 'translation-result-item' : ''} data-fname={f.filename} title={extractRealFilename(f.filename)}>
+            {f.has_result ? (
+              <div className="file-item-content">
+                <div className="original-file">{extractRealFilename(f.filename)}</div>
+                <div className="file-actions">
+                  <a href="#" className="download-original-link" onClick={(e)=>{e.preventDefault(); handleDownload(f.filename);}}>[원본다운]</a>
+                  <a href="#" className="download-result-link" onClick={(e)=>{e.preventDefault(); handleDownload(f.result_filename);}}>[결과다운]</a>
+                  <button className="file-del-btn" onClick={()=>handleDelete(f.filename)}>✕</button>
+                </div>
+              </div>
+            ) : (
+              <>
+                <span className="translating">번역중...</span>
+                <button className="file-del-btn" onClick={()=>handleDelete(f.filename)}>✕</button>
+              </>
+            )}
+          </li>
+        ))}
+      </ul>
+    </div>
+  );
+}
+
+function DocTranslationChat() {
+  const { selectedTool } = useTool();
+  const [messages, setMessages] = useState([]);
+  const [input, setInput] = useState('');
+  const [model, setModel] = useState('internal'); // internal | external
+  const inputRef2 = useRef(null);
+  const chatEndRef = useRef(null);
+
+  // 카드 전환 시 저장된 대화 불러오기
+  useEffect(() => {
+    try {
+      const saved = JSON.parse(localStorage.getItem('messages_doc_translation') || '[]');
+      setMessages(Array.isArray(saved) ? saved : []);
+    } catch { setMessages([]); }
+  }, [selectedTool?.id]);
+  useEffect(() => { chatEndRef.current?.scrollIntoView({ behavior: 'smooth' }); }, [messages]);
+  // 변경 시 저장
+  useEffect(() => {
+    try { localStorage.setItem('messages_doc_translation', JSON.stringify(messages)); } catch {}
+  }, [messages]);
+
+  const sendMessage = async () => {
+    if (!input.trim()) return;
+    const userMsg = { type: 'user', content: input.trim(), time: new Date().toLocaleTimeString() };
+    setMessages((prev) => [...prev, userMsg, { type: 'loading', start: Date.now() }]);
+    setInput('');
+    if (inputRef2.current) inputRef2.current.style.height = '32px';
+    try {
+      const form = new FormData();
+      form.append('message', userMsg.content);
+      // ChatPage 공통 /chat 엔드포인트의 문서번역 분기와 동일 동작을 위해 model 전달
+      form.append('tool_id', 'doc_translation');
+      form.append('model', model === 'internal' ? 'internal' : 'gpt-4o');
+      const res = await fetch('http://localhost:8010/chat', { method: 'POST', body: form });
+      const data = await res.json();
+      const botContent = data.response;
+      setMessages((prev) => {
+        const copy = [...prev];
+        const idx = copy.findIndex((m) => m.type === 'loading');
+        const botMsg = { type: 'bot', content: botContent, time: new Date().toLocaleTimeString(), markdown: true };
+        if (idx !== -1) copy[idx] = botMsg; else copy.push(botMsg);
+        return copy;
+      });
+    } catch (e) {
+      setMessages((prev) => [...prev, { type: 'bot', content: '서버 오류', time: new Date().toLocaleTimeString() }]);
+    }
+  };
+
+  return (
+    <>
+      <div className="chat-center" style={{ width: '100%', maxWidth: 800 }}>
+        <div className="tool-chat-header">
+          <div className="tool-chat-title">문서번역</div>
+          <div className="tool-chat-desc">MS Word 문서를 업로드하면 한글을 영어로 번역합니다.</div>
+        </div>
+        {messages.map((m, idx) => (
+          <div key={idx} className={`chat-message ${m.type === 'user' ? 'user-message' : (m.type==='bot' ? 'bot-message' : 'bot-message progress')}`}>
+            {m.type==='loading' ? (
+              <div className="message-content" style={{color:'#888',fontStyle:'italic'}}>생각중...</div>
+            ) : m.markdown ? (
+              <div className="message-content" dangerouslySetInnerHTML={{ __html: marked.parse(m.content) }} />
+            ) : (
+              <div className="message-content">{m.content}</div>
+            )}
+            <div className="message-time">{ m.type==='loading' ? `${Math.floor((Date.now()-m.start)/1000)}s` : m.time}</div>
+          </div>
+        ))}
+        <div ref={chatEndRef} />
+      </div>
+
+      <div className="chat-input-wrapper">
+        <div className="chat-input-area">
+          <select value={model} onChange={(e)=>setModel(e.target.value)} style={{ marginRight:12, height:36, borderRadius:12, border:'1px solid #ffd6c2', color:'#ff6b4a' }}>
+            <option value="internal">자체모델</option>
+            <option value="external">외부모델</option>
+          </select>
+          <textarea
+            ref={inputRef2}
+            className="chat-input"
+            rows={1}
+            value={input}
+            onChange={(e) => setInput(e.target.value)}
+            onInput={(e)=>{ e.target.style.height='auto'; e.target.style.height=Math.min(e.target.scrollHeight,240)+"px"; }}
+            placeholder="번역할 한국어 텍스트를 입력하세요"
+            style={{ flex: 1, resize: 'none', border: 'none', outline: 'none', overflowY:'auto' }}
+            onKeyDown={(e) => {
+              if (e.key === 'Enter' && !e.shiftKey) {
+                e.preventDefault();
+                sendMessage();
+              }
+            }}
+          />
+          <button className="chat-send" onClick={sendMessage} disabled={!input.trim()}>
+            ↑
+          </button>
+        </div>
+      </div>
+    </>
+  );
+}
--- a/src/pages/LecturePage.jsx
+++ b/src/pages/LecturePage.jsx
@@ -0,0 +1,79 @@
+import React from 'react';
+
+const SECTIONS = [
+  {
+    title: '강수진박사의 프롬프트 엔지니어링의 세계',
+    videos: [
+      'https://www.youtube.com/watch?v=GlvOHXJT_gI&list=PL7d4-rFjtYdK4-RGBJTXbgLI5a-H7lz7g&index=14&t=26s',
+      'https://www.youtube.com/watch?v=nl34M5bKkVM&list=PL7d4-rFjtYdK4-RGBJTXbgLI5a-H7lz7g&index=12',
+      'https://www.youtube.com/watch?v=0sRlrW_UyLk&list=PL7d4-rFjtYdK4-RGBJTXbgLI5a-H7lz7g&index=11',
+      'https://www.youtube.com/watch?v=MtTAprzHOBg&list=PL7d4-rFjtYdK4-RGBJTXbgLI5a-H7lz7g&index=10',
+      'https://www.youtube.com/watch?v=CyWcZWVwCjQ&list=PL7d4-rFjtYdK4-RGBJTXbgLI5a-H7lz7g&index=9',
+      'https://www.youtube.com/watch?v=X7ycln4JREM&list=PL7d4-rFjtYdK4-RGBJTXbgLI5a-H7lz7g&index=8',
+      'https://www.youtube.com/watch?v=rrCmsOFt2UU&list=PL7d4-rFjtYdK4-RGBJTXbgLI5a-H7lz7g&index=7',
+      'https://www.youtube.com/watch?v=7cyDMjzcdxM&list=PL7d4-rFjtYdK4-RGBJTXbgLI5a-H7lz7g&index=6',
+      'https://www.youtube.com/watch?v=Sr4MEivnt4M&list=PL7d4-rFjtYdK4-RGBJTXbgLI5a-H7lz7g&index=5',
+      'https://www.youtube.com/watch?v=F4ExQ3P_A5w&list=PL7d4-rFjtYdK4-RGBJTXbgLI5a-H7lz7g&index=4',
+      'https://www.youtube.com/watch?v=tiC5k9P93cE&list=PL7d4-rFjtYdK4-RGBJTXbgLI5a-H7lz7g&index=3',
+      'https://www.youtube.com/watch?v=nfPXfsVz6jM&list=PL7d4-rFjtYdK4-RGBJTXbgLI5a-H7lz7g&index=2',
+      'https://www.youtube.com/watch?v=9NH3FhBX2ng&list=PL7d4-rFjtYdK4-RGBJTXbgLI5a-H7lz7g&index=1',
+    ],
+  },
+  {
+    title: 'AI, 안해보면 모른다',
+    videos: [
+      'https://www.youtube.com/watch?v=menXWx89QFg&list=PL7d4-rFjtYdK5d2KOXyyaBymJYtEDRmy3&index=14',
+      'https://www.youtube.com/watch?v=6IsYJy3ussQ&list=PL7d4-rFjtYdK5d2KOXyyaBymJYtEDRmy3&index=13',
+      'https://www.youtube.com/watch?v=Mpk4LNZ_P4c&list=PL7d4-rFjtYdK5d2KOXyyaBymJYtEDRmy3&index=12',
+      'https://www.youtube.com/watch?v=r2UMvkwJTRc&list=PL7d4-rFjtYdK5d2KOXyyaBymJYtEDRmy3&index=11',
+      'https://www.youtube.com/watch?v=4uc58O4poJE&list=PL7d4-rFjtYdK5d2KOXyyaBymJYtEDRmy3&index=10',
+      'https://www.youtube.com/watch?v=njAu-W-JA6c&list=PL7d4-rFjtYdK5d2KOXyyaBymJYtEDRmy3&index=9',
+      'https://www.youtube.com/watch?v=SaYxoKVYgsk&list=PL7d4-rFjtYdK5d2KOXyyaBymJYtEDRmy3&index=8',
+      'https://www.youtube.com/watch?v=sDDW5w2jD2Q&list=PL7d4-rFjtYdK5d2KOXyyaBymJYtEDRmy3&index=7',
+      'https://www.youtube.com/watch?v=Ext47QeBCbY&list=PL7d4-rFjtYdK5d2KOXyyaBymJYtEDRmy3&index=6',
+      'https://www.youtube.com/watch?v=og0mGD29Hw8&list=PL7d4-rFjtYdK5d2KOXyyaBymJYtEDRmy3&index=5',
+      'https://www.youtube.com/watch?v=GkZgTth3guQ&list=PL7d4-rFjtYdK5d2KOXyyaBymJYtEDRmy3&index=4',
+      'https://www.youtube.com/watch?v=oSZBGZmaTTw&list=PL7d4-rFjtYdK5d2KOXyyaBymJYtEDRmy3&index=3',
+      'https://www.youtube.com/watch?v=t6Xc1Ey5PMY&list=PL7d4-rFjtYdK5d2KOXyyaBymJYtEDRmy3&index=2',
+      'https://www.youtube.com/watch?v=aFw4Z9F4Ens&list=PL7d4-rFjtYdK5d2KOXyyaBymJYtEDRmy3&index=1',
+    ],
+  },
+  {
+    title: 'MCP를 배워보자',
+    videos: [
+      'https://www.youtube.com/watch?v=kEAV-PqWD_4',
+      'https://www.youtube.com/watch?v=ha9kn0qe4Mc',
+      'https://www.youtube.com/watch?v=ISrYHGg2C2c',
+      'https://www.youtube.com/watch?v=cxOoV2guNQQ',
+      'https://www.youtube.com/watch?v=oAxunD8k0C8',
+      'https://www.youtube.com/watch?v=oZ1O6Z9HwW0',
+      'https://www.youtube.com/watch?v=nyZnrKVaIXU',
+      'https://www.youtube.com/watch?v=BzwhskWZ-CQ',
+    ],
+  },
+];
+
+function toThumb(url) {
+  const match = url.match(/(?:v=|\.be\/|embed\/)([\w-]{11})/);
+  const id = match ? match[1] : '';
+  return id ? `https://img.youtube.com/vi/${id}/hqdefault.jpg` : '';
+}
+
+export default function LecturePage() {
+  return (
+    <section className="page page-lecture" style={{ flex: 1, display: 'flex', flexDirection: 'column', padding: '24px' }}>
+      {SECTIONS.map((sec) => (
+        <React.Fragment key={sec.title}>
+          <h3 className="lecture-topic" style={{ marginTop:  sec.title===SECTIONS[0].title ? 0 : 24 }}>{sec.title}</h3>
+          <div className="lecture-video-list">
+            {sec.videos.map((url) => (
+              <a key={url} href={url} target="_blank" rel="noreferrer" className="lecture-video">
+                <img src={toThumb(url)} alt="video thumbnail" />
+              </a>
+            ))}
+          </div>
+        </React.Fragment>
+      ))}
+    </section>
+  );
+} 
--- a/src/pages/LoginPage.jsx
+++ b/src/pages/LoginPage.jsx
@@ -0,0 +1,39 @@
+import React, { useState } from 'react';
+import { useAuth } from '../context/AuthContext';
+
+export default function LoginPage({ onLoggedIn }) {
+  const { login } = useAuth();
+  const [email, setEmail] = useState('');
+  const [password, setPassword] = useState('');
+  const [error, setError] = useState('');
+
+  const handleSubmit = async (e) => {
+    e.preventDefault();
+    setError('');
+    try {
+      await login(email.trim(), password);
+      onLoggedIn?.();
+    } catch (err) {
+      setError('이메일 또는 비밀번호가 올바르지 않습니다.');
+    }
+  };
+
+  return (
+    <section className="page" style={{ flex: 1, display:'flex', alignItems:'center', justifyContent:'center' }}>
+      <form onSubmit={handleSubmit} style={{ width:'100%', maxWidth:480, padding:'0 16px' }}>
+        <div style={{ marginBottom:16, background:'#f7f7f7', borderRadius:12, padding:'16px 18px' }}>
+          <input type="email" placeholder="이메일" value={email} onChange={(e)=>setEmail(e.target.value)}
+            style={{ width:'100%', background:'transparent', border:'none', outline:'none', fontSize:'1.1rem' }} required />
+        </div>
+        <div style={{ marginBottom:24, background:'#f7f7f7', borderRadius:12, padding:'16px 18px' }}>
+          <input type="password" placeholder="비밀번호" value={password} onChange={(e)=>setPassword(e.target.value)}
+            style={{ width:'100%', background:'transparent', border:'none', outline:'none', fontSize:'1.1rem' }} required />
+        </div>
+        {error && <div style={{ color:'#e53935', marginBottom:12, textAlign:'center' }}>{error}</div>}
+        <button type="submit" style={{ width:'100%', height:64, borderRadius:18, border:'none', background:'#111', color:'#fff', fontSize:'1.4rem', fontWeight:700, cursor:'pointer' }}>로그인</button>
+      </form>
+    </section>
+  );
+}
+
+
--- a/src/pages/QnaPage.jsx
+++ b/src/pages/QnaPage.jsx
@@ -0,0 +1,107 @@
+import React, { useEffect, useState } from 'react';
+import { useAuth } from '../context/AuthContext';
+
+async function fetchQnaList() {
+  const res = await fetch('http://localhost:8010/community/qna');
+  if (!res.ok) throw new Error('QNA 목록 조회 실패');
+  return await res.json();
+}
+
+export default function QnaPage() {
+  const { user } = useAuth();
+  const [qna, setQna] = useState([]);
+  const [openId, setOpenId] = useState(null);
+  const [openContent, setOpenContent] = useState('');
+  const [showEditor, setShowEditor] = useState(false);
+  const [title, setTitle] = useState('');
+  const [content, setContent] = useState('');
+
+  useEffect(() => {
+    fetchQnaList().then(setQna).catch(() => setQna([]));
+  }, []);
+
+  const handleOpen = async (id) => {
+    try {
+      const res = await fetch(`http://localhost:8010/community/qna/${id}?increase=1`);
+      if (!res.ok) return;
+      const data = await res.json();
+      setOpenId(id);
+      setOpenContent(data.content);
+      fetchQnaList().then(setQna).catch(() => {});
+    } catch {}
+  };
+
+  const submitQna = async () => {
+    if (!title.trim() || !content.trim()) return;
+    const res = await fetch('http://localhost:8010/community/qna', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ title, content, author_id: String(user?.user_id || ''), author_email: user?.email || null }),
+    });
+    if (res.ok) {
+      setTitle('');
+      setContent('');
+      setShowEditor(false);
+      fetchQnaList().then(setQna).catch(() => {});
+    } else {
+      const errText = await res.text().catch(() => '');
+      alert('등록 실패: ' + errText);
+    }
+  };
+
+  return (
+    <section className="page page-qna" style={{ flex: 1, display: 'block', paddingTop: '24px' }}>
+      <div style={{ width: '100%', display: 'flex', justifyContent: 'flex-end', margin: '0 20px 12px 20px' }}>
+        <button onClick={() => setShowEditor(true)} style={{ background: '#fff8ef', color: '#ff9800', border: '1px solid #FFE0B2', padding: '8px 12px', borderRadius: 8, cursor: 'pointer', marginRight: 40 }}>글쓰기</button>
+      </div>
+      <table className="qna-table">
+        <thead>
+          <tr>
+            <th style={{ width: 60 }}>번호</th>
+            <th>제목</th>
+            <th style={{ width: 120 }}>등록일</th>
+            <th style={{ width: 80 }}>조회수</th>
+          </tr>
+        </thead>
+        <tbody>
+          {qna.map((r) => (
+            <React.Fragment key={r.id}>
+              <tr>
+                <td>{r.id}</td>
+                <td className="qna-title">
+                  <a href="#" onClick={(e) => { e.preventDefault(); handleOpen(r.id); }}>{r.title}</a>
+                </td>
+                <td>{new Date(r.created_at).toISOString().slice(0, 10)}</td>
+                <td>{r.views}</td>
+              </tr>
+              {openId === r.id && (
+                <tr>
+                  <td colSpan={4}>
+                    <div style={{ background: '#fff8ef', border: '1px solid #FFE0B2', borderRadius: 12, padding: 16 }}>
+                      <div style={{ whiteSpace: 'pre-wrap', lineHeight: 1.5 }}>{openContent}</div>
+                      <div style={{ display: 'flex', justifyContent: 'flex-end', marginTop: 8 }}>
+                        <button onClick={() => setOpenId(null)} style={{ background: '#fff', border: '1px solid #ddd', padding: '6px 10px', borderRadius: 8 }}>닫기</button>
+                      </div>
+                    </div>
+                  </td>
+                </tr>
+              )}
+            </React.Fragment>
+          ))}
+        </tbody>
+      </table>
+      {showEditor && (
+        <div style={{ width: 'calc(100% - 80px)', margin: '16px 20px 0 20px', background: '#fff', border: '1px solid #ffd6c2', borderRadius: 12, padding: 16 }}>
+          <input value={title} onChange={(e) => setTitle(e.target.value)} placeholder="제목" style={{ width: 'calc(100% - 40px)', marginBottom: 8, padding: '10px 12px', borderRadius: 8, border: '1px solid #ffd6c2' }} />
+          <textarea value={content} onChange={(e) => setContent(e.target.value)} placeholder="내용" rows={6} style={{ width: 'calc(100% - 40px)', padding: '10px 12px', borderRadius: 8, border: '1px solid #ffd6c2' }} />
+          <div style={{ display: 'flex', gap: 8, justifyContent: 'flex-end', marginTop: 8 }}>
+            <button onClick={() => setShowEditor(false)} style={{ background: '#fff', border: '1px solid #ddd', padding: '8px 12px', borderRadius: 8 }}>취소</button>
+            <button onClick={submitQna} style={{ background: '#ff9800', color: '#fff', border: 'none', padding: '8px 12px', borderRadius: 8 }}>등록</button>
+          </div>
+        </div>
+      )}
+    </section>
+  );
+}
+
+
--- a/src/pages/ToolsPage.jsx
+++ b/src/pages/ToolsPage.jsx
@@ -0,0 +1,63 @@
+import React, { useEffect, useState } from 'react';
+import { useTool } from '../context/ToolContext';
+
+export default function ToolsPage({ onNavigate }) {
+  const { tools, favorites, toggleFavorite, setSelectedTool } = useTool();
+  const [filter, setFilter] = useState('all');
+
+  const filtered = tools.filter((tool) => {
+    if (filter === 'all') return true;
+    if (filter === 'favorite') return favorites.includes(tool.id);
+    return tool.category?.includes(filter);
+  });
+
+  const handleSelect = (tool) => {
+    setSelectedTool(tool);
+    onNavigate && onNavigate('chat');
+  };
+
+  return (
+    <section className="page page-tools" style={{ flex: 1, display:'flex', flexDirection:'column' }}>
+      <div className="tools-header">
+        <span className="tools-title">도구 목록</span>
+        <div className="tools-filters">
+          {['all', 'favorite', '오픈AI', '내부AI'].map((f) => (
+            <button
+              key={f}
+              className={`filter-btn ${filter === f ? 'active' : ''}`}
+              onClick={() => setFilter(f)}
+              data-filter={f}
+            >
+              {f === 'all' ? '전체' : f === 'favorite' ? '즐겨찾기' : f}
+            </button>
+          ))}
+        </div>
+      </div>
+      <div className="tools-list">
+        {filtered.map((tool) => {
+          const fav = favorites.includes(tool.id);
+          return (
+            <div
+              className="tool-card"
+              key={tool.id}
+              data-tool-id={tool.id}
+              onClick={() => handleSelect(tool)}
+            >
+              <div className="tool-title">{tool.name}</div>
+              <div className="tool-desc">{tool.description}</div>
+              <div
+                className={`tool-fav ${fav ? 'active' : ''}`}
+                onClick={(e) => {
+                  e.stopPropagation();
+                  toggleFavorite(tool.id);
+                }}
+              >
+                ★
+              </div>
+            </div>
+          );
+        })}
+      </div>
+    </section>
+  );
+} 
--- a/src/services/openaiService.js
+++ b/src/services/openaiService.js
@@ -0,0 +1,72 @@
+export async function fetchOpenAIChat(messages, model="gpt-3.5-turbo", options={}) {
+  const apiKey = import.meta.env.VITE_OPENAI_API_KEY || import.meta.env.OPENAI_API_KEY;
+  if (!apiKey) throw new Error('OPENAI API KEY not set');
+
+  const body = {
+    model,
+    messages,
+  };
+
+  const res = await fetch('https://api.openai.com/v1/chat/completions', {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+      Authorization: `Bearer ${apiKey}`,
+    },
+    body: JSON.stringify(body),
+  });
+
+  if (!res.ok) throw new Error(`OpenAI error ${res.status}`);
+  const data = await res.json();
+  return data.choices?.[0]?.message?.content || '';
+} 
+
+// 샘플코드 방식: GPT-5로 이미지/텍스트 분류
+export async function classifyRequest(userInput, model = 'gpt-5') {
+  const content = await fetchOpenAIChat(
+    [
+      { role: 'system', content: '너는 요청 분류기다. 사용자가 이미지 생성을 원하면 image, 아니면 text라고만 답해라.' },
+      { role: 'user', content: `사용자가 다음과 같은 요청을 했습니다:\n"${userInput}"\n이 요청이 '이미지 생성'에 해당하면 'image'라고만 답하고, 그렇지 않으면 'text'라고만 답하세요.` },
+    ],
+    model,
+    { temperature: 0 }
+  );
+  const answer = (content || '').trim().toLowerCase();
+  return answer.includes('image') ? 'image' : 'text';
+}
+
+// 이미지 생성 API 호출 (gpt-image-1 또는 호환 모델)
+export async function fetchOpenAIImage(prompt, model = "gpt-image-1", options = {}) {
+  const apiKey = import.meta.env.VITE_OPENAI_API_KEY || import.meta.env.OPENAI_API_KEY;
+  if (!apiKey) throw new Error('OPENAI API KEY not set');
+
+  const runOnce = async (mdl) => {
+    const body = {
+      model: mdl,
+      prompt,
+      size: options.size || '1024x1024',
+      response_format: 'b64_json',
+    };
+    const res = await fetch('https://api.openai.com/v1/images/generations', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        Authorization: `Bearer ${apiKey}`,
+      },
+      body: JSON.stringify(body),
+    });
+    if (!res.ok) throw new Error(`OpenAI image error ${res.status}`);
+    const data = await res.json();
+    const item = data?.data?.[0] || {};
+    if (item.b64_json) return `data:image/png;base64,${item.b64_json}`;
+    if (item.url) return item.url; // some models may return URL
+    throw new Error('No image returned');
+  };
+
+  // 우선 gpt-image-1 시도 → 실패 시 dall-e-3 폴백
+  try {
+    return await runOnce(model || 'gpt-image-1');
+  } catch (_) {
+    return await runOnce('dall-e-3');
+  }
+}
--- a/src/style.css
+++ b/src/style.css
@@ -0,0 +1,12 @@
+/* Copied from original style.css */
+html, body {
+  overflow-y: scroll;
+}
+
+body {
+    margin: 0;
+    padding: 0;
+    font-family: 'Noto Sans KR', sans-serif;
+    background: #FFF3E0;
+    color: #222;
+} 
--- a/src/tools/dev_chatbot/AIService.js
+++ b/src/tools/dev_chatbot/AIService.js
@@ -0,0 +1,29 @@
+// AIService.js – dev_chatbot 전용
+import { API_BASE_URL } from './constants';
+
+const AIService = async (question, toolId, sessionId = null, files = []) => {
+  try {
+    const formData = new FormData();
+    formData.append('message', question);
+    formData.append('tool_id', toolId);
+    if (sessionId) formData.append('session_id', sessionId);
+    files.forEach((file) => formData.append('image', file));
+
+    const response = await fetch(`${API_BASE_URL}/chat`, {
+      method: 'POST',
+      body: formData,
+    });
+    if (!response.ok) throw new Error(`HTTP ${response.status}`);
+    const data = await response.json();
+    return {
+      response: data.response?.trim() || 'AI 응답을 생성하지 못했습니다.',
+      sessionId: data.session_id,
+      toolName: data.tool_name,
+    };
+  } catch (e) {
+    console.error('AIService 오류:', e);
+    return { response: 'AI 응답을 생성하지 못했습니다.', sessionId: null, toolName: '' };
+  }
+};
+
+export { AIService }; 
--- a/src/tools/dev_chatbot/ChatHandler.js
+++ b/src/tools/dev_chatbot/ChatHandler.js
@@ -0,0 +1,20 @@
+import { OCRService } from './OCRService';
+import { AIService } from './AIService';
+
+const ChatHandler = async ({ text, files = [], toolId, sessionId = null }) => {
+  let question = text;
+  const imageFiles = files.filter((f) => f.type?.startsWith('image/'));
+  if (imageFiles.length) {
+    const ocrTexts = [];
+    for (const img of imageFiles) {
+      const ocrText = await OCRService(img);
+      if (ocrText) ocrTexts.push(ocrText);
+    }
+    if (ocrTexts.length) {
+      question = `${text}\n\n이미지에서 추출한 텍스트:\n${ocrTexts.join('\n')}`;
+    }
+  }
+  return AIService(question, toolId, sessionId, files);
+};
+
+export { ChatHandler }; 
--- a/src/tools/dev_chatbot/ChatInput.jsx
+++ b/src/tools/dev_chatbot/ChatInput.jsx
@@ -0,0 +1,151 @@
+import React, { useState, useRef, useEffect } from 'react';
+import { ChatHandler } from './ChatHandler';
+import { useTool } from '../../context/ToolContext';
+import { marked } from 'marked';
+marked.setOptions({ mangle:false, headerIds:false });
+
+export default function DevChatInput() {
+  const { selectedTool } = useTool();
+  const [inputText, setInputText] = useState('');
+  const inputRef = useRef(null);
+  const [selectedFiles, setSelectedFiles] = useState([]);
+  const [messages, setMessages] = useState([]);
+  const [loading, setLoading] = useState(false);
+  const chatEndRef = useRef(null);
+  const [isComposing, setIsComposing] = useState(false);
+  const [enterWhileComposing, setEnterWhileComposing] = useState(false);
+
+  useEffect(() => {
+    chatEndRef.current?.scrollIntoView({ behavior: 'smooth' });
+  }, [messages]);
+
+  // Load saved messages when tool active
+  useEffect(() => {
+    try {
+      const saved = JSON.parse(localStorage.getItem('messages_dev_chatbot') || '[]');
+      setMessages(Array.isArray(saved) ? saved : []);
+    } catch { setMessages([]); }
+  }, [selectedTool?.id]);
+
+  // Persist messages on change
+  useEffect(() => {
+    try { localStorage.setItem('messages_dev_chatbot', JSON.stringify(messages)); } catch {}
+  }, [messages]);
+
+  const handleTextChange = (e) => setInputText(e.target.value);
+  const handleFilesChange = (e) => {
+    const files = Array.from(e.target.files || []);
+    if (files.length) setSelectedFiles((prev) => [...prev, ...files]);
+  };
+  const handleFileRemove = (idx) => setSelectedFiles((prev) => prev.filter((_, i) => i !== idx));
+
+  const handleSend = async () => {
+    if (!inputText && selectedFiles.length === 0) return;
+    setLoading(true);
+    const userMessage = { text: inputText, files: selectedFiles, sender: 'user', time: new Date().toLocaleTimeString() };
+    setMessages((prev) => [...prev, userMessage]);
+    const { response } = await ChatHandler({ text: inputText, files: selectedFiles, toolId: 'dev_chatbot' });
+    setMessages((prev) => [...prev, { text: response, sender: 'ai', time: new Date().toLocaleTimeString() }]);
+    setInputText('');
+    setSelectedFiles([]);
+    setLoading(false);
+    if (inputRef.current) inputRef.current.style.height = '32px';
+  };
+
+  return (
+    <div style={{ flex: 1, display: 'flex', flexDirection: 'column', height: '100%', position:'relative' }}>
+      <div className="chat-center" style={{ flex: 1, overflowY: 'auto' }}>
+        {/* Tool header */}
+        {selectedTool && (
+          <div className="tool-chat-header">
+            <div className="tool-chat-title">{selectedTool.name}</div>
+            <div className="tool-chat-desc">{selectedTool.description}</div>
+          </div>
+        )}
+
+        {/* Messages */}
+        {messages.map((msg, idx) => (
+          <div key={idx} className={`chat-message ${msg.sender === 'user' ? 'user-message' : 'bot-message'}`} style={{ maxWidth: '80%' }}>
+            {msg.sender === 'ai' ? (
+              <div className="message-content" dangerouslySetInnerHTML={{ __html: marked.parse(msg.text) }} />
+            ) : (
+              <div className="message-content">{msg.text}</div>
+            )}
+            <div className="message-time">{msg.time}</div>
+          </div>
+        ))}
+        {loading && (
+          <div className="chat-message bot-message loading" style={{ maxWidth: '80%' }}>
+            <div className="message-content">AI가 응답을 생성하고 있습니다...</div>
+          </div>
+        )}
+        <div ref={chatEndRef} />
+      </div>
+
+      {/* Input bar */}
+      <div className="chat-input-wrapper">
+        {selectedFiles.length > 0 && (
+          <div className="image-preview-area" style={{ marginBottom: 8 }}>
+            {selectedFiles.map((file, idx) => (
+              <div key={idx} className="image-preview-box">
+                <span className="image-preview-name">{file.name}</span>
+                <button className="image-preview-remove" onClick={() => handleFileRemove(idx)}>
+                  ×
+                </button>
+              </div>
+            ))}
+          </div>
+        )}
+        <div className="chat-input-area" style={{ width: '100%' }}>
+          <textarea
+            ref={inputRef}
+            className="chat-input"
+            rows={1}
+            value={inputText}
+            onChange={handleTextChange}
+            onInput={(e)=>{ e.target.style.height='auto'; e.target.style.height=Math.min(e.target.scrollHeight,240)+"px"; }}
+            placeholder="메시지 입력"
+            style={{ flex: 1, resize: 'none', border: 'none', outline: 'none', overflowY:'auto' }}
+            onCompositionStart={() => {
+              setIsComposing(true);
+            }}
+            onCompositionEnd={() => {
+              setIsComposing(false);
+              if (enterWhileComposing) {
+                setEnterWhileComposing(false);
+                handleSend();
+              }
+            }}
+            onKeyDown={(e) => {
+              if (e.key === 'Enter' && !e.shiftKey) {
+                if (isComposing) {
+                  setEnterWhileComposing(true);
+                  return;
+                }
+                e.preventDefault();
+                handleSend();
+              }
+            }}
+          />
+          <input
+            type="file"
+            multiple
+            onChange={handleFilesChange}
+            style={{ display: 'none' }}
+            id="dev-hidden-file-input"
+          />
+          <button
+            className="chat-send"
+            onClick={() => document.getElementById('dev-hidden-file-input').click()}
+            style={{ marginRight: 8 }}
+          >
+            📎
+          </button>
+          <button className="chat-send" onClick={handleSend} disabled={loading || !inputText.trim()}>
+            ↑
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+} 
--- a/src/tools/dev_chatbot/OCRService.js
+++ b/src/tools/dev_chatbot/OCRService.js
@@ -0,0 +1,14 @@
+import Tesseract from 'tesseract.js';
+
+const OCRService = async (imageFile) => {
+  try {
+    const {
+      data: { text },
+    } = await Tesseract.recognize(imageFile, 'kor+eng');
+    return text.trim();
+  } catch (e) {
+    return '';
+  }
+};
+
+export { OCRService }; 
--- a/src/tools/dev_chatbot/constants.js
+++ b/src/tools/dev_chatbot/constants.js
@@ -0,0 +1 @@
+export const API_BASE_URL = 'http://localhost:8010'; 
--- a/style.css
+++ b/style.css
@@ -0,0 +1,873 @@
+/* prevent horizontal layout shift due to scrollbar */
+html, body {
+  overflow-y: scroll;
+}
+
+body {
+    margin: 0;
+    padding: 0;
+    font-family: 'Noto Sans KR', sans-serif;
+    background: #FFF3E0;
+    color: #222;
+}
+.container {
+    display: flex;
+    height: 100vh;
+}
+.sidebar {
+    width: 80px;
+    background: linear-gradient(180deg, #FFE0B2 0%, #FFCC80 100%);
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    padding-top: 20px;
+    box-shadow: 1px 0 8px #FFD180;
+}
+.logo {
+    font-size: 2rem;
+    font-weight: bold;
+    color: #FF9800;
+    margin-bottom: 40px;
+    letter-spacing: 2px;
+}
+.menu {
+    width: 100%;
+}
+.menu ul {
+    list-style: none;
+    padding: 0;
+    margin: 0;
+}
+.menu-item {
+    padding: 18px 0;
+    text-align: center;
+    cursor: pointer;
+    color: #333;
+    font-size: 1.1rem;
+    transition: background 0.2s, color 0.2s;
+}
+.menu-item.active, .menu-item:hover {
+    background: #FFF3E0;
+    color: #FF9800;
+    font-weight: bold;
+}
+.main-content {
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    background: #FFF3E0;
+    min-width: 0;
+}
+.topbar {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 18px 24px 0 24px;
+    background: transparent;
+    height: 60px;
+}
+.page-title {
+    font-size: 1.3rem;
+    font-weight: bold;
+}
+.login-btn {
+    background: none;
+    border: 1px solid #b2b2b2;
+    border-radius: 16px;
+    padding: 6px 18px;
+    color: #00b6f0;
+    font-size: 1rem;
+    cursor: pointer;
+    transition: background 0.2s;
+}
+.login-btn:hover {
+    background: #e6f7ff;
+}
+.page {
+    display: none;
+    flex: 1;
+    flex-direction: column;
+    height: 100%;
+}
+.page.active {
+    display: flex;
+}
+/* 채팅 화면 */
+.page-chat {
+    justify-content: center;
+    align-items: center;
+    position: relative;
+}
+.chat-center {
+    position: absolute;
+    top: 35%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    overflow-y: auto;
+    max-height: calc(100vh - 200px);
+    padding: 20px;
+    width: 100%;
+    max-width: 800px;
+}
+.chat-logo-wrapper {
+    position: relative;
+    width: 100px;
+    height: 100px;
+    margin-bottom: 10px;
+}
+.chat-logo {
+    width: 100px;
+    height: 100px;
+    background: radial-gradient(circle, #FF9800 70%, #FFE0B2 100%);
+    border-radius: 50%;
+    box-shadow: 0 0 16px #FFD180;
+    position: relative;
+    z-index: 1;
+}
+.chat-title {
+    font-size: 2rem;
+    font-weight: 700;
+    color: #222;
+    position: absolute;
+    left: 50%;
+    top: 50%;
+    transform: translate(-50%, -50%);
+    margin: 0;
+    z-index: 2;
+    pointer-events: none;
+    writing-mode: initial;
+    text-align: center;
+    width: 100%;
+    height: 100%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+.chat-subtitle {
+    font-size: 0.9rem;
+    color: #888;
+    text-align: center;
+    margin-top: 8px;
+}
+.chat-input-wrapper {
+    width: 100%;
+    max-width: 800px;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    position: absolute;
+    bottom: 60px;
+    left: 50%;
+    transform: translateX(-50%);
+    z-index: 2;
+}
+.chat-input-area {
+    display: flex;
+    align-items: center;
+    background: #fff;
+    border-radius: 24px;
+    box-shadow: 0 2px 8px #FFD180;
+    padding: 8px 16px;
+    width: 100%;
+    max-width: 100%;
+}
+.chat-input {
+    flex: 1;
+    border: none;
+    outline: none;
+    font-size: 1rem;
+    padding: 8px 10px;
+    background: #fff;
+    color: #222;
+    resize: none;
+    min-height: 32px;
+    max-height: 240px; /* 최대 약 10줄 */
+    line-height: 1.5;
+    box-sizing: border-box;
+    overflow-y: auto;
+    white-space: pre-wrap;
+    word-break: break-all;
+}
+.chat-input:empty:before {
+    content: attr(data-placeholder);
+    color: #bbb;
+    pointer-events: none;
+}
+.chat-plus, .chat-hash, .chat-send {
+    background: none;
+    border: none;
+    font-size: 1.2rem;
+    margin-left: 8px;
+    cursor: pointer;
+    color: #FF9800;
+    border-radius: 50%;
+    width: 32px;
+    height: 32px;
+    transition: background 0.2s;
+}
+.chat-send:disabled {
+    color: #FF9800;
+    cursor: not-allowed;
+}
+.footer {
+    position: absolute;
+    bottom: 10px;
+    left: 50%;
+    transform: translateX(-50%);
+    display: flex;
+    gap: 18px;
+    font-size: 0.95rem;
+    color: #b2b2b2;
+}
+/* 도구 화면 */
+.page-tools {
+    padding: 24px 32px 0 32px;
+    flex-direction: column;
+    align-items: flex-start;
+}
+.tools-header {
+    display: flex;
+    align-items: center;
+    width: 100%;
+    margin-bottom: 18px;
+}
+.tools-title {
+    font-size: 1.2rem;
+    font-weight: bold;
+    margin-right: 24px;
+}
+.tools-filters {
+    display: flex;
+    gap: 10px;
+}
+.filter-btn {
+    background: #fff;
+    border: 1px solid #FFE0B2;
+    border-radius: 16px;
+    padding: 6px 16px;
+    color: #FF9800;
+    font-size: 1rem;
+    cursor: pointer;
+    transition: background 0.2s, color 0.2s;
+}
+.filter-btn.active, .filter-btn:hover {
+    background: #FFCC80;
+    color: #FF9800;
+    font-weight: bold;
+}
+.tools-list {
+    display: grid;
+    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
+    gap: 18px;
+    width: 100%;
+}
+.tool-card {
+    position: relative;
+    background: #FFF8E1;
+    border-radius: 16px;
+    padding: 20px;
+    margin-bottom: 16px;
+    box-shadow: 0 2px 8px #FFE0B2;
+    cursor: pointer;
+    transition: all 0.3s ease;
+    border: 2px solid transparent;
+}
+.tool-card:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 4px 16px #FFD180;
+    border-color: #FFB74D;
+}
+.tool-card.selected {
+    border-color: #ff6b4a;
+    background: linear-gradient(135deg, #fff6f3 0%, #fff 100%);
+    box-shadow: 0 4px 20px rgba(255, 107, 74, 0.2);
+}
+.tool-card:active {
+    transform: translateY(0);
+    box-shadow: 0 2px 8px #ffe0d3;
+}
+.tool-title {
+    font-size: 1.1rem;
+    font-weight: bold;
+    color: #222;
+}
+.tool-desc {
+    font-size: 0.98rem;
+    color: #666;
+}
+.tool-fav {
+    position: absolute;
+    top: 14px;
+    right: 14px;
+    font-size: 1.2rem;
+    color: #FFD6C2;
+    cursor: pointer;
+    transition: color 0.2s;
+}
+.tool-fav.active {
+    color: #FF9800;
+}
+@media (max-width: 900px) {
+    .tools-list {
+        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
+    }
+    .chat-input-wrapper { width: calc(95vw - 0px); max-width: calc(95vw - 0px); }
+    .chat-input-area {
+        width: 100%;
+        min-width: 0;
+    }
+    .image-preview-area {
+        width: 100%;
+        min-width: 0;
+    }
+}
+/* 채팅 메시지 스타일 */
+.chat-message {
+    margin: 10px 0;
+    padding: 10px 15px;
+    border-radius: 15px;
+    max-width: 80%;
+    word-wrap: break-word;
+    position: relative;
+}
+
+.user-message {
+    background-color: #007bff;
+    color: white;
+    margin-left: auto;
+    border-bottom-right-radius: 5px;
+}
+
+.bot-message {
+    background-color: #FFF7ED; /* 주 배경 톤과 어울리는 밝은 주황 계열 */
+    color: #333;
+    margin-right: auto;
+    border-bottom-left-radius: 5px;
+    border: 1px solid #FFE0B2;
+}
+.bot-message img { display:block; max-width:100%; border-radius:12px; }
+
+.message-content {
+    margin-bottom: 5px;
+    line-height: 1.4;
+    white-space: pre-wrap; /* 입력 줄바꿈 그대로 표시 */
+    word-break: break-word;
+}
+
+.message-time {
+    font-size: 0.75rem;
+    opacity: 0.7;
+    text-align: right;
+}
+
+.user-message .message-time {
+    text-align: left;
+}
+
+/* 로딩 애니메이션 */
+@keyframes typing {
+    0%, 20% { opacity: 0; }
+    50% { opacity: 1; }
+    100% { opacity: 0; }
+}
+
+.bot-message.loading .message-content::after {
+    content: '...';
+    animation: typing 1.5s infinite;
+}
+
+/* 이미지 미리보기 영역 */
+.image-preview-area {
+    margin-bottom: 8px;
+    width: 100%;
+    max-width: 100%;
+}
+.image-preview-box {
+    display: flex;
+    align-items: center;
+    background: #f8f9fa;
+    border: 1px solid #eee;
+    border-radius: 12px;
+    padding: 8px 12px;
+    position: relative;
+    min-width: 120px;
+    max-width: 220px;
+    box-shadow: 0 2px 8px #ffe0d3;
+}
+.image-preview-thumb {
+    width: 36px;
+    height: 36px;
+    object-fit: cover;
+    border-radius: 8px;
+    margin-right: 10px;
+    background: #fff;
+    border: 1px solid #eee;
+}
+.image-preview-info {
+    display: flex;
+    flex-direction: column;
+    font-size: 0.95rem;
+    color: #444;
+}
+.image-preview-name {
+    font-weight: 500;
+    margin-bottom: 2px;
+    max-width: 100px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+}
+.image-preview-size {
+    font-size: 0.85rem;
+    color: #888;
+}
+.image-preview-remove {
+    position: absolute;
+    top: 6px;
+    right: 6px;
+    background: #fff0ee;
+    border: none;
+    color: #FF9800;
+    font-size: 1.1rem;
+    border-radius: 50%;
+    width: 22px;
+    height: 22px;
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    transition: background 0.2s;
+}
+.image-preview-remove:hover {
+    background: #FF9800;
+    color: #fff;
+}
+/* 도구 채팅 헤더 */
+.tool-chat-header {
+    text-align: center;
+    margin-bottom: 30px;
+    padding: 20px;
+    background: rgba(255, 255, 255, 0.8);
+    border-radius: 16px;
+    box-shadow: 0 2px 12px rgba(255, 107, 74, 0.1);
+}
+.tool-chat-title {
+    font-size: 1.4rem;
+    font-weight: bold;
+    color: #FF9800;
+    margin-bottom: 8px;
+}
+.tool-chat-desc {
+    font-size: 0.9rem;
+    color: #666;
+    line-height: 1.4;
+}
+.progress-bar {
+    width: 60px;
+    height: 6px;
+    background: #eee;
+    border-radius: 3px;
+    margin-top: 6px;
+    overflow: hidden;
+}
+.progress-bar-inner {
+    width: 100%;
+    height: 100%;
+    background: linear-gradient(90deg, #FF9800 0%, #FFD6C2 100%);
+    animation: progressBarAnim 1s linear infinite;
+}
+@keyframes progressBarAnim {
+    0% { transform: translateX(-100%); }
+    100% { transform: translateX(100%); }
+} 
+.model-toggle-group {
+    display: flex;
+    align-items: center;
+    gap: 4px;
+    margin-right: 8px;
+}
+.model-toggle-btn {
+    background: #FFE0D3;
+    border: 1.5px solid #FFD6C2;
+    color: #FF9800;
+    font-weight: 500;
+    border-radius: 16px;
+    padding: 4px 16px;
+    font-size: 1rem;
+    cursor: pointer;
+    transition: background 0.2s, color 0.2s, border 0.2s;
+    outline: none;
+}
+.model-toggle-btn.active,
+.model-toggle-btn:focus {
+    background: #FF9800;
+    color: #fff;
+    border: 1.5px solid #FF9800;
+}
+.model-toggle-btn:hover:not(.active) {
+    background: #FFD6C2;
+    color: #FF9800;
+} 
+.external-iframe {
+    width: 100%;
+    height: 100%;
+    border: none;
+} 
+
+/* iframe 모드 시 채팅 영역 전체 확장 */
+.chat-center.iframe-mode {
+    position: absolute;
+    top: 0;
+    left: 0;
+    transform: none;
+    width: 100%;
+    max-width: none;
+    height: 100%;
+    padding: 0;
+} 
+
+/* 파일 사이드바 */
+.file-sidebar {
+    position: absolute;
+    left: 0;
+    top: 0;
+    width: 220px;
+    height: 100%;
+    background: #fff8ef;
+    border-right: 1px solid #ffd6c2;
+    overflow-y: auto;
+    z-index: 3;
+}
+.file-sidebar-header {
+    padding: 12px;
+    font-weight: bold;
+    border-bottom: 1px solid #ffd6c2;
+}
+.file-list {
+    list-style: none;
+    margin: 0;
+    padding: 0;
+}
+.file-list li {
+    padding: 8px 12px;
+    cursor: pointer;
+    border-bottom: 1px solid #ffe8d5;
+    display:flex;
+    justify-content: space-between;
+    align-items:center;
+}
+.file-del-btn{
+    background:none;
+    border:none;
+    color:#ff6b4a;
+    cursor:pointer;
+    font-size:1rem;
+}
+
+/* (추가) 긴 파일명도 버튼이 가려지지 않도록 처리 */
+.file-list li span{
+    flex:1 1 auto;          /* 남는 공간을 차지하면서 필요하면 축소 */
+    min-width:0;            /* flex-shrink 가 동작하도록 최소폭 0 */
+    overflow:hidden;        /* 넘치는 텍스트 숨김 */
+    text-overflow:ellipsis; /* 말줄임표 표시 */
+    white-space:nowrap;     /* 한 줄 유지 */
+}
+.file-list li:hover { background: #fff1e6; }
+
+/* 파일 슬라이드 팝업 */
+.file-slide {
+    position: fixed;
+    left: 220px; /* 옆 사이드바 너비 */
+    bottom: -60%;
+    width: calc(100% - 220px);
+    height: 60%;
+    background: #ffffff;
+    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
+    border-top-left-radius: 12px;
+    border-top-right-radius: 12px;
+    overflow-y: auto;
+    transition: bottom 0.3s ease;
+    z-index: 4;
+    padding: 16px;
+}
+.file-slide.show { bottom: 0; } 
+.file-progress {
+    padding:8px 12px;
+    color:#aaa;
+    font-style:italic;
+}
+@keyframes pulseProgress {
+    0% { opacity: 0.3; }
+    50% { opacity: 1; }
+    100% { opacity: 0.3; }
+}
+.file-progress {
+    animation: pulseProgress 1.5s infinite;
+} 
+.file-slide-close {
+    position: absolute;
+    left: 50%;
+    transform: translateX(-50%);
+    top: 6px; /* 팝업 내부 상단 */
+    width: 32px;
+    height: 32px;
+    background: #fff;
+    border: 2px solid #ff6b4a;
+    border-radius: 50%;
+    font-size: 1.3rem;
+    line-height: 28px;
+    text-align: center;
+    cursor: pointer;
+    color: #ff6b4a;
+    font-weight: bold;
+    z-index: 5;
+}
+.file-slide-close:hover { background:#ff6b4a; color:#fff; }
+.file-slide-content {
+    white-space: pre-wrap;
+    font-family: "Noto Sans KR", sans-serif;
+} 
+
+/* PDF 로딩 오버레이 */
+.file-loading-overlay {
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background: rgba(255, 255, 255, 0.85);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 1rem;
+    color: #ff6b4a;
+    font-style: italic;
+    z-index: 4; /* iframe 위에 표시 */
+    animation: pulseProgress 1.5s infinite;
+} 
+
+/* --- Sidebar fixed width to prevent layout shift --- */
+.file-sidebar {
+  width: 260px;
+  flex: 0 0 260px;
+}
+.file-sidebar .file-list li {
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+} 
+
+/* --- Community page adjustments --- */
+.page-community {
+    overflow-y: visible; /* use outer body scrollbar only */
+    overflow-x: hidden;
+}
+.page-community.active {
+    display: block !important; /* show only when active; override .page.active flex */
+}
+#community-img { display:none; }
+
+/* 커뮤니티 내부 레이아웃 */
+.community-container { display:flex; height:100%; }
+.community-sidebar { width:180px; background:#fff8ef; border-right:1px solid #ffd6c2; }
+.community-sidebar ul{ list-style:none; margin:0; padding:0; }
+.community-menu-item{ padding:12px 18px; cursor:pointer; color:#333; font-size:1rem; }
+.community-menu-item.active,.community-menu-item:hover{ background:#fff1e6; color:#ff9800; font-weight:bold; }
+.community-content{ flex:1; overflow-y:auto; } 
+.newsletter-list{ list-style:none; margin:0; padding:0 0 0 20px; }
+.newsletter-list li{ padding:6px 0; }
+.newsletter-list a{ color:#007acc; text-decoration:none; font-size:1rem; }
+.newsletter-list a:hover{ text-decoration:underline; }
+.newsletter-title{ margin:16px 0 8px 20px; font-size:1.4rem; }
+.newsletter-content-area{ height: calc(100% - 56px); /* adapt below title */ }
+.newsletter-pdf-wrapper{ position:relative; height:100%; }
+.newsletter-iframe{ width:100%; height:100%; border:none; }
+.newsletter-close{ position:absolute; top:-16px; left:50%; transform:translateX(-50%); width:32px; height:32px; background:#fff; border:2px solid #ff6b4a; border-radius:50%; font-size:1.3rem; line-height:26px; text-align:center; color:#ff6b4a; cursor:pointer; z-index:5; }
+.newsletter-close:hover{ background:#ff6b4a; color:#fff; } 
+
+/* Lecture styles */
+.lecture-title{ margin:16px 0 8px 20px; font-size:1.4rem; }
+.lecture-topic{ margin:8px 0 12px 20px; font-size:1.2rem; color:#555; }
+.lecture-video-list{ display:flex; flex-wrap:wrap; gap:12px; padding:0 0 0 20px; }
+.lecture-video{ width:140px; display:block; }
+.lecture-video img{ width:100%; border-radius:8px; box-shadow:0 2px 6px rgba(0,0,0,0.1); }
+.lecture-video:hover img{ transform:scale(1.03); transition:transform .2s; } 
+
+/* QnA board */
+.qna-title-head{ margin:16px 0 8px 20px; font-size:1.4rem; }
+.qna-table{ width:calc(100% - 40px); margin:0 20px; border-collapse:collapse; }
+.qna-table th,.qna-table td{ border-bottom:1px solid #eee; padding:10px; text-align:left; }
+.qna-table th{ background:#fff8ef; font-weight:600; color:#333; }
+.qna-table tr:hover td{ background:#fff1e6; }
+.qna-title{ color:#007acc; cursor:pointer; }
+.qna-title:hover{ text-decoration:underline; } 
+ 
+/* Document Translation styles */
+.download-original-link,
+.download-result-link {
+    color: #007acc;
+    text-decoration: none;
+    font-weight: bold;
+    margin-right: 6px;
+    padding: 2px 6px;
+    border-radius: 4px;
+    border: 1px solid #007acc;
+    font-size: 0.8rem;
+    display: inline-block;
+}
+.download-original-link:hover,
+.download-result-link:hover {
+    background: #007acc;
+    color: #fff;
+    text-decoration: none;
+}
+.download-original-link {
+    background-color: #f8f9fa;
+    border-color: #6c757d;
+    color: #6c757d;
+}
+.download-original-link:hover {
+    background-color: #6c757d;
+    color: #fff;
+}
+.translating {
+    color: #ff6b4a;
+    font-weight: bold;
+    margin-right: 8px;
+    font-size: 0.8rem;
+    animation: pulse 1.5s infinite;
+}
+@keyframes pulse {
+    0% { opacity: 1; }
+    50% { opacity: 0.5; }
+    100% { opacity: 1; }
+}
+
+.file-list li.translation-result-item {
+    display: block !important;
+    align-items: initial !important;
+    justify-content: initial !important;
+}
+.file-item-content { width: 100%; }
+.original-file {
+    font-weight: bold;
+    color: #333;
+    margin-bottom: 2px;
+    font-size: 0.9rem;
+}
+.result-file {
+    color: #666;
+    font-size: 0.85rem;
+    margin-bottom: 4px;
+    font-style: italic;
+}
+
+/* ------- Loading Overlay for AI뉴스 ------- */
+.loading-overlay {
+  position: fixed;
+  left: 50%;
+  top: 50%;
+  transform: translate(-50%, -50%);
+  background: rgba(255, 255, 255, 0.96);
+  border: 1px solid #ffd6c2;
+  border-radius: 16px;
+  padding: 14px 18px;
+  z-index: 2000;
+  box-shadow: 0 8px 22px rgba(0,0,0,.12);
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  pointer-events: none;
+}
+.loading-text {
+  color: #ff6b4a;
+  font-weight: 700;
+  letter-spacing: .4px;
+  animation: textPulse 1.2s ease-in-out infinite;
+}
+.loading-dots {
+  display: inline-flex;
+  gap: 6px;
+}
+.loading-dot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  background: #ff6b4a;
+  animation: loadingBlink 1s infinite ease-in-out;
+}
+.loading-dot:nth-child(2) { animation-delay: .2s; }
+.loading-dot:nth-child(3) { animation-delay: .4s; }
+
+@keyframes loadingBlink {
+  0%, 80%, 100% { opacity: .25; transform: scale(.85); }
+  40% { opacity: 1; transform: scale(1); }
+}
+@keyframes textPulse {
+  0%, 100% { opacity: .7; }
+  50% { opacity: 1; }
+}
+
+/* When file sidebar is visible, shift chat area and input to the right */
+.page-chat.has-file-sidebar .chat-center {
+    left: calc(50% + 130px); /* half of file sidebar(260px) */
+    max-width: calc(95vw - 340px); /* main sidebar(80px) + file sidebar(260px) */
+    transform: translate(-50%, -50%);
+}
+
+.page-chat.has-file-sidebar .chat-input-wrapper {
+    left: calc(50% + 130px); /* half of file sidebar(260px) */
+    max-width: calc(95vw - 340px); /* main sidebar(80px) + file sidebar(260px) */
+    width: calc(100% - 260px); /* exclude file sidebar area */
+    transform: translateX(-50%);
+}
+
+/* --- Chat History Panel & Toggle --- */
+.chat-history-toggle {
+  position: absolute;
+  top: 18px;
+  left: 18px;
+  width: 32px;
+  height: 32px;
+  padding: 6px;
+  background: none;
+  border: none;
+  cursor: pointer;
+  z-index: 6;
+  display: flex;
+  flex-direction: column;
+  justify-content: space-between;
+}
+.chat-history-toggle span {
+  display: block;
+  width: 100%;
+  height: 3px;
+  background: #ff6b4a;
+  border-radius: 2px;
+}
+.chat-history-panel {
+  position: absolute;
+  top: 78px;
+  left: 0;
+  width: 360px;
+  /* 상단 헤더(top)과 하단 입력 영역(bottom) 사이에 꽉 채움 */
+  bottom: 0px; /* chat-input-wrapper 의 bottom 값과 동일 */
+  background: #ffffff;
+  border-right: 1px solid #ffd6c2;
+  box-shadow: 2px 0 12px rgba(0,0,0,0.05);
+  z-index: 5;
+  overflow-y: auto;
+  display: none;             /* 기본 숨김 */
+}
+.chat-history-panel.show { display: block; }
+.chat-history-list { list-style: none; margin: 0; padding: 0; }
+.history-item { padding: 10px 14px; border-bottom: 1px solid #ffe8d5; }
+.history-content { font-size: 0.95rem; color: #333; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+.history-time { font-size: 0.8rem; color: #aaa; }
+
+/* 파일 사이드바가 있는 경우 히스토리 패널 위치 보정 */
+.page-chat.has-file-sidebar .chat-history-panel { left: 260px; }
+.page-chat.has-file-sidebar .chat-history-toggle { left: 278px; }
--- a/vite.config.js
+++ b/vite.config.js
@@ -0,0 +1,19 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+
+export default defineConfig({
+  plugins: [react()],
+  envPrefix: ['VITE_', 'OPENAI_'],
+  server: {
+    // SPA 라우팅 경로(/tools, /lecture 등)와 충돌을 피하기 위해 API 프록시 경로를 '/api' 계열로만 사용합니다.
+    // 현재 프론트엔드는 절대 경로(http://localhost:8010/...)를 사용하므로 실제로는 프록시가 필요 없습니다.
+    proxy: {
+      // 예: 필요한 경우 다음과 같이 사용하세요
+      // '/api': {
+      //   target: 'http://localhost:8010',
+      //   changeOrigin: true,
+      //   rewrite: (path) => path.replace(/^\/api/, '')
+      // }
+    }
+  }
+});
				`@@ -0,0 +1 @@`
				`export const API_BASE_URL = 'http://localhost:8010';`