Phase 8 Complete: Sync Audit Log + Frontend Integration

- Thêm audit/sync_audit.py: Ghi lịch sử sync vào audit/sync_log.json
- Thêm API endpoints: /sync/history, /sync/history/{run_id}
- Frontend: Nút 'Lịch sử đồng bộ' + panel expand chi tiết từng file
- Sửa frontend served từ backend (http://localhost:8000)
- Cập nhật DEPLOYMENT_GUIDE với hướng dẫn chạy localhost
- Cập nhật ARCHITECTURE_MAP: Phase 8 hoàn thành

api/main.py

@@ -5,7 +5,8 @@ import secrets
 from enum import Enum
 from typing import List, Optional, Dict, Any
 from fastapi import FastAPI, HTTPException, BackgroundTasks, Request, status
-from fastapi.responses import RedirectResponse
+from fastapi.responses import RedirectResponse, FileResponse
+from fastapi.staticfiles import StaticFiles
 from fastapi.middleware.cors import CORSMiddleware
 from pydantic import BaseModel, Field, validator
 import uvicorn
@@ -24,6 +25,7 @@ from extraction.ocr_service import OCRService
 from extraction.text_extractor import TextExtractor
 from chunking.markdown_chunker import MarkdownChunker
 from indexing.vector_store import VectorStore
+from audit import sync_audit
 
 # --- Cấu hình Logging chuyên nghiệp ---
 logging.basicConfig(
@@ -50,6 +52,15 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
+# Serve frontend static files
+FRONTEND_DIR = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), "frontend")
+app.mount("/static", StaticFiles(directory=FRONTEND_DIR), name="static")
+
+@app.get("/", tags=["Frontend"])
+async def serve_frontend():
+    """Serve frontend index.html."""
+    return FileResponse(os.path.join(FRONTEND_DIR, "index.html"))
+
 # --- Singleton Engine Instance ---
 rag_engine = None
 sync_status = {"running": False, "last_run": None, "processed": 0, "skipped": 0, "errors": []}
@@ -270,6 +281,8 @@ def run_sync_background():
     global sync_status
     sync_status = {"running": True, "last_run": None, "processed": 0, "skipped": 0, "errors": []}
     
+    run_id = sync_audit.start_run()
+    
     try:
         provider = SharePointProvider()
         dce = DocumentClassificationEngine(provider=provider)
@@ -304,16 +317,22 @@ def run_sync_background():
             
             if classification.processing_policy in (ProcessingPolicy.UNSUPPORTED, ProcessingPolicy.METADATA_ONLY, ProcessingPolicy.REQUIRES_REVIEW):
                 sync_status["skipped"] += 1
+                sync_audit.log_file(run_id, name, item_id, classification.processing_policy.value, 
+                                   classification.doc_type.value, 0, "skipped", classification.reason)
                 continue
             
             try:
                 file_bytes = provider.download_file(item)
             except Exception as e:
                 sync_status["errors"].append(f"{name}: download failed")
+                sync_audit.log_file(run_id, name, item_id, classification.processing_policy.value,
+                                   classification.doc_type.value, 0, "error", str(e))
                 continue
             
             if not file_bytes:
                 sync_status["errors"].append(f"{name}: empty file")
+                sync_audit.log_file(run_id, name, item_id, classification.processing_policy.value,
+                                   classification.doc_type.value, 0, "error", "empty file")
                 continue
             
             pages = []
@@ -336,6 +355,8 @@ def run_sync_background():
             
             if not pages:
                 sync_status["skipped"] += 1
+                sync_audit.log_file(run_id, name, item_id, classification.processing_policy.value,
+                                   classification.doc_type.value, 0, "skipped", "no content extracted")
                 continue
             
             metadata = {
@@ -352,16 +373,22 @@ def run_sync_background():
                 vector_db.delete_by_file_id(item_id)
                 vector_db.embed_and_index(chunks)
                 sync_status["processed"] += 1
+                sync_audit.log_file(run_id, name, item_id, classification.processing_policy.value,
+                                   classification.doc_type.value, len(chunks), "indexed")
                 logger.info(f"Sync: Indexed {name} → {len(chunks)} chunks")
             else:
                 sync_status["skipped"] += 1
+                sync_audit.log_file(run_id, name, item_id, classification.processing_policy.value,
+                                   classification.doc_type.value, 0, "skipped", "no chunks generated")
         
         sync_status["last_run"] = "completed"
+        sync_audit.finish_run(run_id, "completed")
         logger.info(f"Sync completed: {sync_status['processed']} processed, {sync_status['skipped']} skipped")
         
     except Exception as e:
         sync_status["last_run"] = "failed"
         sync_status["errors"].append(str(e))
+        sync_audit.finish_run(run_id, "failed")
         logger.error(f"Sync failed: {e}")
     finally:
         sync_status["running"] = False
@@ -382,8 +409,30 @@ async def sync_endpoint(background_tasks: BackgroundTasks):
 
 @app.get("/sync/status", tags=["Ingestion"])
 async def sync_status_endpoint():
-    """Kiểm tra trạng thái đồng bộ."""
+    """Kiểm tra trạng thái đồng bộ hiện tại."""
     return sync_status
 
+
+@app.get("/sync/history", tags=["Ingestion"])
+async def sync_history_endpoint(limit: int = 10):
+    """
+    Lấy lịch sử đồng bộ (audit log).
+    Args:
+        limit: Số lần sync gần nhất (mặc định 10)
+    """
+    return {"runs": sync_audit.get_history(limit)}
+
+
+@app.get("/sync/history/{run_id}", tags=["Ingestion"])
+async def sync_run_detail_endpoint(run_id: str):
+    """
+    Lấy chi tiết của 1 lần đồng bộ.
+    """
+    run = sync_audit.get_run_detail(run_id)
+    if not run:
+        raise HTTPException(status_code=404, detail="Run not found")
+    return run
+
+
 if __name__ == "__main__":
     uvicorn.run("main:app", host="0.0.0.0", port=8000, reload=True)

audit/sync_audit.py

@@ -0,0 +1,144 @@
+import json
+import os
+import logging
+from datetime import datetime
+from typing import Dict, List, Optional
+
+logger = logging.getLogger("SyncAudit")
+
+AUDIT_DIR = os.path.dirname(os.path.abspath(__file__))
+AUDIT_FILE = os.path.join(AUDIT_DIR, "sync_log.json")
+
+
+def _load_log() -> Dict:
+    """Load audit log từ file."""
+    if os.path.exists(AUDIT_FILE):
+        try:
+            with open(AUDIT_FILE, "r", encoding="utf-8") as f:
+                return json.load(f)
+        except json.JSONDecodeError:
+            return {"runs": []}
+    return {"runs": []}
+
+
+def _save_log(data: Dict):
+    """Lưu audit log ra file."""
+    with open(AUDIT_FILE, "w", encoding="utf-8") as f:
+        json.dump(data, f, indent=2, ensure_ascii=False)
+
+
+def start_run() -> str:
+    """
+    Bắt đầu một sync run mới.
+    Returns: run_id
+    """
+    run_id = datetime.now().strftime("%Y%m%d_%H%M%S")
+    data = _load_log()
+    
+    run = {
+        "run_id": run_id,
+        "started_at": datetime.now().isoformat(),
+        "finished_at": None,
+        "status": "running",
+        "summary": {"processed": 0, "skipped": 0, "errors": 0},
+        "files": [],
+        "errors": []
+    }
+    
+    data["runs"].insert(0, run)  # Mới nhất lên đầu
+    
+    # Giới hạn 50 runs gần nhất
+    if len(data["runs"]) > 50:
+        data["runs"] = data["runs"][:50]
+    
+    _save_log(data)
+    logger.info(f"Audit: Started run {run_id}")
+    return run_id
+
+
+def log_file(run_id: str, name: str, item_id: str, policy: str, 
+             doc_type: str, chunks: int, status: str, detail: str = ""):
+    """
+    Ghi log cho 1 file đã xử lý.
+    
+    Args:
+        run_id: ID của sync run
+        name: Tên file
+        item_id: SharePoint item ID
+        policy: Processing policy (requires_ocr, skip_ocr, metadata_only, unsupported)
+        doc_type: Document type (textual_document, spreadsheet, drawing, binary)
+        chunks: Số chunks đã tạo
+        status: indexed, skipped, error
+        detail: Ghi chú thêm
+    """
+    data = _load_log()
+    
+    for run in data["runs"]:
+        if run["run_id"] == run_id:
+            file_entry = {
+                "name": name,
+                "item_id": item_id,
+                "doc_type": doc_type,
+                "policy": policy,
+                "chunks": chunks,
+                "status": status,
+                "detail": detail,
+                "timestamp": datetime.now().isoformat()
+            }
+            run["files"].append(file_entry)
+            
+            # Cập nhật summary
+            if status == "indexed":
+                run["summary"]["processed"] += 1
+            elif status == "skipped":
+                run["summary"]["skipped"] += 1
+            elif status == "error":
+                run["summary"]["errors"] += 1
+                run["errors"].append(f"{name}: {detail}")
+            
+            break
+    
+    _save_log(data)
+
+
+def finish_run(run_id: str, status: str = "completed"):
+    """
+    Đánh dấu sync run hoàn thành.
+    """
+    data = _load_log()
+    
+    for run in data["runs"]:
+        if run["run_id"] == run_id:
+            run["finished_at"] = datetime.now().isoformat()
+            run["status"] = status
+            break
+    
+    _save_log(data)
+    logger.info(f"Audit: Finished run {run_id} ({status})")
+
+
+def get_history(limit: int = 10) -> List[Dict]:
+    """
+    Lấy lịch sử sync runs.
+    """
+    data = _load_log()
+    return data["runs"][:limit]
+
+
+def get_run_detail(run_id: str) -> Optional[Dict]:
+    """
+    Lấy chi tiết của 1 sync run.
+    """
+    data = _load_log()
+    for run in data["runs"]:
+        if run["run_id"] == run_id:
+            return run
+    return None
+
+
+def get_latest_run() -> Optional[Dict]:
+    """
+    Lấy sync run gần nhất.
+    """
+    data = _load_log()
+    return data["runs"][0] if data["runs"] else None

audit/sync_log.json

@@ -0,0 +1,128 @@
+{
+  "runs": [
+    {
+      "run_id": "20260511_035430",
+      "started_at": "2026-05-11T03:54:30.817636",
+      "finished_at": "2026-05-11T03:55:11.377114",
+      "status": "completed",
+      "summary": {
+        "processed": 8,
+        "skipped": 3,
+        "errors": 0
+      },
+      "files": [
+        {
+          "name": "Quy-trinh-nghiem-thu-thiet-bi-v1.pdf",
+          "item_id": "01BP532D2O74Z6FYQPOVBKE5DBMYDWCWCK",
+          "doc_type": "textual_document",
+          "policy": "skip_ocr",
+          "chunks": 1,
+          "status": "indexed",
+          "detail": "",
+          "timestamp": "2026-05-11T03:54:47.793432"
+        },
+        {
+          "name": "Bien-ban-ban-giao-scan.pdf",
+          "item_id": "01BP532D7QZ5QES5H675D2Q62S3YNCN7MV",
+          "doc_type": "textual_document",
+          "policy": "requires_ocr",
+          "chunks": 1,
+          "status": "indexed",
+          "detail": "",
+          "timestamp": "2026-05-11T03:54:54.449272"
+        },
+        {
+          "name": "So-do-mat-bang-kho-A1.pdf",
+          "item_id": "01BP532D5ETRRCEFMAXVF3T5UOAN7ZMWSW",
+          "doc_type": "textual_document",
+          "policy": "skip_ocr",
+          "chunks": 1,
+          "status": "indexed",
+          "detail": "",
+          "timestamp": "2026-05-11T03:54:57.820068"
+        },
+        {
+          "name": "Quy-dinh-luu-tru-ho-so.docx",
+          "item_id": "01BP532D7R5UFAJ3N3FZC2LUGZ4EWKXVSV",
+          "doc_type": "textual_document",
+          "policy": "skip_ocr",
+          "chunks": 1,
+          "status": "indexed",
+          "detail": "",
+          "timestamp": "2026-05-11T03:55:00.316683"
+        },
+        {
+          "name": "Mo-ta-nghiep-vu.xlsx",
+          "item_id": "01BP532D2GHD2SMYQZZRBJ5YBYXH32YLCC",
+          "doc_type": "spreadsheet",
+          "policy": "skip_ocr",
+          "chunks": 1,
+          "status": "indexed",
+          "detail": "",
+          "timestamp": "2026-05-11T03:55:02.318406"
+        },
+        {
+          "name": "sample-layout.dxf",
+          "item_id": "01BP532D2ICBWDIKS4ARA2QXJLUYYPARDV",
+          "doc_type": "drawing",
+          "policy": "metadata_only",
+          "chunks": 0,
+          "status": "skipped",
+          "detail": "Native CAD drawing format",
+          "timestamp": "2026-05-11T03:55:03.301004"
+        },
+        {
+          "name": "unsupported-binary.bin",
+          "item_id": "01BP532DZ77VD5TK6SVRC3EBEF3PTWPQ7J",
+          "doc_type": "binary",
+          "policy": "unsupported",
+          "chunks": 0,
+          "status": "skipped",
+          "detail": "Unsupported or binary extension: .bin",
+          "timestamp": "2026-05-11T03:55:04.189531"
+        },
+        {
+          "name": "mystery-file.xyzbin",
+          "item_id": "01BP532D7RTGNA3Q2TRRAIOS7LPEIBRAVT",
+          "doc_type": "binary",
+          "policy": "unsupported",
+          "chunks": 0,
+          "status": "skipped",
+          "detail": "Unsupported or binary extension: .xyzbin",
+          "timestamp": "2026-05-11T03:55:05.013405"
+        },
+        {
+          "name": "README.txt",
+          "item_id": "01BP532D6PKB3WWG4X5VGYBMG7IFYZTG6M",
+          "doc_type": "textual_document",
+          "policy": "skip_ocr",
+          "chunks": 1,
+          "status": "indexed",
+          "detail": "",
+          "timestamp": "2026-05-11T03:55:06.986536"
+        },
+        {
+          "name": "Bien-ban-noi-bo-restricted.docx",
+          "item_id": "01BP532D65XW2KEXQQMRF3JVLAQZOKIW2V",
+          "doc_type": "textual_document",
+          "policy": "skip_ocr",
+          "chunks": 1,
+          "status": "indexed",
+          "detail": "",
+          "timestamp": "2026-05-11T03:55:09.096708"
+        },
+        {
+          "name": "Bang-ngan-sach-du-an.xlsx",
+          "item_id": "01BP532D6KRPO27NSMUBC3FXJYN7TKDMVR",
+          "doc_type": "spreadsheet",
+          "policy": "skip_ocr",
+          "chunks": 1,
+          "status": "indexed",
+          "detail": "",
+          "timestamp": "2026-05-11T03:55:11.376444"
+        }
+      ],
+      "errors": []
+    }
+  ]
+}

doc/00.AGENT_ARCHITECTURE_MAP.md

@@ -38,8 +38,9 @@ SharePoint → Ingestion → DCE → [OCR/Extract/Skip] → Chunking → OpenSea
 - **LLM Factory:** `chat/llm_factory.py` → Hỗ trợ Gemini, Groq, Local (config trong `.env`).
 
 ### E. Tầng API & Frontend
-- **Backend:** `api/main.py` → FastAPI tại port 8000. Endpoint: `/health`, `/auth/login` (SSO), `/auth/callback`, `/auth/login-email`, `/chat`, `/sync`, `/sync/status`.
+- **Backend:** `api/main.py` → FastAPI tại port 8000. Endpoint: `/health`, `/auth/login` (SSO), `/auth/callback`, `/auth/login-email`, `/chat`, `/sync`, `/sync/status`, `/sync/history`, `/sync/history/{run_id}`.
-- **Frontend:** `frontend/` → Glassmorphism UI với SSO login + email fallback + sync button. Gọi `http://localhost:8000`.
+- **Frontend:** `frontend/` → Glassmorphism UI với SSO login + email fallback + sync button + sync history panel. Gọi `http://localhost:8000`.
+- **Audit:** `audit/sync_audit.py` → Lưu lịch sử sync vào `audit/sync_log.json`.
 
 ### F. Tầng Cấu hình (Decoupled Configuration)
 - Toàn bộ thông số trong `.env`. Load qua `core/config.py`.
@@ -83,6 +84,9 @@ SharePoint → Ingestion → DCE → [OCR/Extract/Skip] → Chunking → OpenSea
 │       └── local_llm.py
 ├── 📁 api/
 │   └── main.py                # 🚀 FastAPI Backend (port 8000)
+├── 📁 audit/
+│   ├── sync_audit.py          # 📋 Sync audit logging (ghi lịch sử sync)
+│   └── sync_log.json          # 📄 Audit log data
 ├── 📁 frontend/
 │   ├── index.html             # 🎨 Glassmorphism UI (Login + Chat + Sync)
 │   ├── app.js                 # 💬 Chat, Auth, Sync logic
@@ -175,12 +179,10 @@ SharePoint → Ingestion → DCE → [OCR/Extract/Skip] → Chunking → OpenSea
 - [x] Auth UI: Simple email login + SSO Azure AD + user context cho API calls
 - [x] DOCX Text Extraction: python-docx (paragraphs + tables)
 - [x] XLSX Text Extraction: openpyxl (sheets + cells)
+- [x] Sync Audit: Lịch sử sync persist vào file + API + Frontend panel
 
 ### Chưa triển khai (Phase 9 - Production Ready)
 
-#### Ưu tiên trung bình
-- [ ] **Cấu hình Azure AD cho SSO:** Thêm Redirect URI `http://localhost:8000/auth/callback` và bật "ID tokens" trong App Registration.
-
 #### Ưu tiên thấp
 - [ ] **Monitoring Dashboard:** Health metrics, ingestion status, OCR success rate.
 - [ ] **Multi-tenant:** Hỗ trợ nhiều SharePoint site/tenant.

doc/DEPLOYMENT_GUIDE.md

@@ -4,6 +4,42 @@
 
 ---
 
+## 0. Chạy hệ thống trên Localhost
+
+### Yêu cầu
+- Python 3.10+ với venv đã cài dependencies
+- Docker (cho OpenSearch)
+- Azure AD App Registration đã cấu hình
+
+### Các bước khởi động
+
+```bash
+# 1. Khởi động OpenSearch
+docker-compose up -d opensearch
+
+# 2. Khởi động Backend (serves cả API + Frontend)
+source venv/bin/activate
+python3 api/main.py
+
+# 3. Mở trình duyệt
+# http://localhost:8000
+```
+
+### Truy cập
+
+| URL | Mô tả |
+|-----|-------|
+| `http://localhost:8000` | Frontend (Login + Chat) |
+| `http://localhost:8000/docs` | Swagger API Documentation |
+| `http://localhost:8000/health` | Health check |
+| `http://localhost:8000/auth/login` | SSO Azure AD redirect |
+
+### Đăng nhập
+- **SSO:** Bấm "Đăng nhập Microsoft SSO" → đăng nhập bằng tài khoản Microsoft 365
+- **Email:** Nhập email bất kỳ (fallback, không cần password)
+
+---
+
 ## 1. Cấu hình Azure AD App Registration (MANUAL)
 
 ### 1.1 Tạo App Registration (nếu chưa có)
@@ -36,13 +72,13 @@
 4. Bấm **Add permissions**
 5. **Quan trọng:** Bấm **Grant admin consent for [tenant]** → Confirm
 
-### 1.4 Cấu hình Redirect URI cho SSO (khi cần login)
+### 1.4 Cấu hình Redirect URI cho SSO ✅ ĐÃ CẤU HÌNH
 
 1. App Registration → **Authentication** → **Add a platform** → **Web**
 2. Nhập Redirect URI:
-   - **PoC (localhost):** `http://localhost:8000/auth/callback`
+   - **PoC (localhost):** `http://localhost:8000/auth/callback` ✅
-   - **Production:** `https://your-domain.com/auth/callback`
+   - **Production:** `https://your-domain.com/auth/callback` (thêm khi có domain)
-3. Tích chọn: ✅ **ID tokens** (implicit grant)
+3. Tích chọn: ✅ **ID tokens** (implicit grant) ✅
 4. Bấm **Save**
 
 ### 1.5 Kiểm tra Token Claims
@@ -350,9 +386,11 @@ curl -X POST http://localhost:8000/chat \
 
 ## 7. Checklist trước khi Production
 
-- [ ] Azure AD App Registration đã cấu hình đúng permissions
+- [x] Azure AD App Registration đã cấu hình đúng permissions
-- [ ] Client Secret còn hạn sử dụng
+- [x] Client Secret còn hạn sử dụng
-- [ ] Redirect URI đã thêm cho production domain
+- [x] Redirect URI đã thêm cho localhost (`http://localhost:8000/auth/callback`)
+- [x] ID tokens đã bật (implicit grant)
+- [ ] Redirect URI cho production domain (khi có domain thật)
 - [ ] OpenSearch đã đổi password mặc định
 - [ ] SSL certificate đã cài đặt
 - [ ] CORS đã giới hạn origins

frontend/app.js

@@ -1,5 +1,5 @@
-// API Base URL
+// API Base URL (relative khi served từ backend)
-const API_BASE = 'http://localhost:8000';
+const API_BASE = window.location.origin;
 
 // DOM Elements
 const loginScreen = document.getElementById('login-screen');
@@ -19,6 +19,10 @@ const logoutBtn = document.getElementById('logout-btn');
 const syncBtn = document.getElementById('sync-btn');
 const syncStatus = document.getElementById('sync-status');
 const ssoBtn = document.getElementById('sso-btn');
+const historyBtn = document.getElementById('history-btn');
+const historyPanel = document.getElementById('history-panel');
+const historyList = document.getElementById('history-list');
+const closeHistory = document.getElementById('close-history');
 
 let chatHistory = [];
 let currentUser = null;
@@ -287,5 +291,71 @@ async function pollSyncStatus() {
 
 syncBtn.onclick = triggerSync;
 
+// ====== SYNC HISTORY ======
+
+async function loadSyncHistory() {
+    try {
+        const response = await fetch(`${API_BASE}/sync/history?limit=20`);
+        const data = await response.json();
+        
+        historyList.innerHTML = '';
+        
+        if (!data.runs || data.runs.length === 0) {
+            historyList.innerHTML = '<p style="color: var(--text-muted); font-size: 13px; text-align: center; padding: 20px;">Chưa có lần đồng bộ nào.</p>';
+            return;
+        }
+        
+        data.runs.forEach(run => {
+            const item = document.createElement('div');
+            item.className = 'history-item';
+            
+            const time = new Date(run.started_at).toLocaleString('vi-VN');
+            const statusClass = run.status;
+            const statusText = run.status === 'completed' ? 'Hoàn thành' : 
+                              run.status === 'failed' ? 'Thất bại' : 'Đang chạy';
+            
+            item.innerHTML = `
+                <div class="history-header">
+                    <span class="history-time">${time}</span>
+                    <span class="history-status ${statusClass}">${statusText}</span>
+                </div>
+                <div class="history-summary">
+                    <span><i class="fas fa-check-circle" style="color: #10b981"></i> ${run.summary.processed} nạp</span>
+                    <span><i class="fas fa-forward" style="color: #eab308"></i> ${run.summary.skipped} bỏ</span>
+                    <span><i class="fas fa-exclamation-circle" style="color: #ef4444"></i> ${run.summary.errors} lỗi</span>
+                </div>
+                <div class="history-files">
+                    ${run.files.map(f => `
+                        <div class="history-file">
+                            <span class="history-file-name" title="${f.name}">${f.name}</span>
+                            <span class="history-file-status ${f.status}">${f.chunks > 0 ? f.chunks + ' chunks' : f.status}</span>
+                        </div>
+                    `).join('')}
+                    ${run.errors.length > 0 ? `
+                        <div style="margin-top: 8px; font-size: 11px; color: #ef4444;">
+                            ${run.errors.map(e => `<div>⚠ ${e}</div>`).join('')}
+                        </div>
+                    ` : ''}
+                </div>
+            `;
+            
+            item.onclick = () => item.classList.toggle('expanded');
+            historyList.appendChild(item);
+        });
+    } catch (error) {
+        console.error('Load history error:', error);
+        historyList.innerHTML = '<p style="color: #ef4444; font-size: 13px; text-align: center;">Lỗi tải lịch sử.</p>';
+    }
+}
+
+historyBtn.onclick = () => {
+    historyPanel.classList.toggle('active');
+    if (historyPanel.classList.contains('active')) {
+        loadSyncHistory();
+    }
+};
+
+closeHistory.onclick = () => historyPanel.classList.remove('active');
+
 // Init
 checkLogin();

frontend/index.html

@@ -4,7 +4,7 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>AI Knowledge Hub | Enterprise RAG</title>
-    <link rel="stylesheet" href="style.css">
+    <link rel="stylesheet" href="/static/style.css">
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
     <link href="https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700&display=swap" rel="stylesheet">
@@ -48,6 +48,7 @@
             <nav class="side-nav">
                 <div class="nav-item active"><i class="fas fa-comments"></i> <span>Hỏi đáp RAG</span></div>
                 <button class="sync-btn" id="sync-btn"><i class="fas fa-sync-alt"></i> Đồng bộ SharePoint</button>
+                <button class="sync-btn" id="history-btn"><i class="fas fa-history"></i> Lịch sử đồng bộ</button>
             </nav>
 
             <div class="sync-status" id="sync-status" style="display: none;">
@@ -112,8 +113,19 @@
                 <!-- Nguồn sẽ được render ở đây -->
             </div>
         </section>
+
+        <!-- Sync History Panel -->
+        <section class="source-panel" id="history-panel">
+            <div class="panel-header">
+                <h3><i class="fas fa-history"></i> Lịch sử đồng bộ</h3>
+                <button id="close-history"><i class="fas fa-times"></i></button>
+            </div>
+            <div class="history-list" id="history-list">
+                <!-- Lịch sử sẽ được render ở đây -->
+            </div>
+        </section>
     </div>
 
-    <script src="app.js"></script>
+    <script src="/static/app.js"></script>
 </body>
 </html>

frontend/style.css

@@ -344,6 +344,122 @@ textarea {
 .source-item h4 { font-size: 14px; margin-bottom: 5px; color: var(--primary); }
 .source-item p { font-size: 12px; color: var(--text-muted); line-height: 1.4; }
 
+/* History Panel */
+.history-item {
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--glass-border);
+    border-radius: 12px;
+    padding: 15px;
+    margin-bottom: 12px;
+    cursor: pointer;
+    transition: 0.3s;
+}
+
+.history-item:hover {
+    background: rgba(255, 255, 255, 0.08);
+}
+
+.history-item .history-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 8px;
+}
+
+.history-item .history-time {
+    font-size: 12px;
+    color: var(--text-muted);
+}
+
+.history-item .history-status {
+    font-size: 11px;
+    padding: 2px 8px;
+    border-radius: 6px;
+    font-weight: 600;
+}
+
+.history-item .history-status.completed {
+    background: rgba(16, 185, 129, 0.2);
+    color: #10b981;
+}
+
+.history-item .history-status.failed {
+    background: rgba(239, 68, 68, 0.2);
+    color: #ef4444;
+}
+
+.history-item .history-status.running {
+    background: rgba(139, 92, 246, 0.2);
+    color: #8b5cf6;
+}
+
+.history-item .history-summary {
+    display: flex;
+    gap: 12px;
+    font-size: 12px;
+    color: var(--text-muted);
+}
+
+.history-item .history-summary span {
+    display: flex;
+    align-items: center;
+    gap: 4px;
+}
+
+.history-files {
+    margin-top: 10px;
+    padding-top: 10px;
+    border-top: 1px solid var(--glass-border);
+    display: none;
+}
+
+.history-item.expanded .history-files {
+    display: block;
+}
+
+.history-file {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 6px 0;
+    font-size: 12px;
+    border-bottom: 1px solid rgba(255,255,255,0.03);
+}
+
+.history-file:last-child {
+    border-bottom: none;
+}
+
+.history-file-name {
+    color: var(--text-main);
+    flex: 1;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+}
+
+.history-file-status {
+    font-size: 10px;
+    padding: 2px 6px;
+    border-radius: 4px;
+    margin-left: 8px;
+}
+
+.history-file-status.indexed {
+    background: rgba(16, 185, 129, 0.2);
+    color: #10b981;
+}
+
+.history-file-status.skipped {
+    background: rgba(234, 179, 8, 0.2);
+    color: #eab308;
+}
+
+.history-file-status.error {
+    background: rgba(239, 68, 68, 0.2);
+    color: #ef4444;
+}
+
 /* Login Screen */
 .login-screen {
     position: fixed;