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2026-06-29 16:49:07 +07:00 · 2026-06-29 16:49:07 +07:00 · 6e2ab902a1
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--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1 @@
+.claude/
--- a/README.md
+++ b/README.md
@ -0,0 +1,43 @@
+# SuggestPrice
+
+Gợi ý giá listing cho một SKU dựa trên: lịch sử giá supplier (ERP) + giá eBay (đang bán / đã bán) → đưa GPT suggest giá.
+
+## Trạng thái hiện tại
+Đang chạy bằng **MOCK DATA**. Các service `erp`, `ebay`, `gpt` đều trả dữ liệu giả lập, sẵn cấu trúc để cắm API thật sau (xem `USE_MOCK` trong `.env`).
+
+## Cấu trúc
+```
+SuggestPrice/
+├─ server/   # Express API (Node, ESM)
+└─ web/      # React + Vite + Recharts
+```
+
+## Chạy (2 terminal)
+
+```bash
+# Terminal 1 - backend (cổng 3001)
+cd server
+cp .env.example .env
+npm install
+npm run dev
+
+# Terminal 2 - frontend (cổng 5173, proxy /api -> 3001)
+cd web
+npm install
+npm run dev
+```
+
+Mở http://localhost:5173 → nhập SKU bất kỳ + chọn condition → Suggest.
+
+## API
+`POST /api/suggest-price`  body: `{ "sku": "ABC123", "condition": "USED" }`
+
+Trả về: `aiSuggestion`, `supplierSeries[]`, `ebayActiveSeries[]`, `ebaySoldSeries[]`.
+
+## Khi có API thật
+1. ERP: điền `ERP_API_URL` / `ERP_API_KEY`, hoàn thiện `server/src/services/erpService.js`.
+2. eBay: điền `EBAY_CLIENT_ID` / `EBAY_CLIENT_SECRET`, hoàn thiện `server/src/services/ebayService.js`
+   - Active listings: Browse API (dùng được ngay).
+   - Sold listings: Marketplace Insights API (cần eBay duyệt - Limited Release).
+3. GPT: điền `OPENAI_API_KEY`, bỏ comment phần thật trong `server/src/services/gptService.js`.
+4. Đặt `USE_MOCK=false` trong `.env`.
--- a/backend/.env.example
+++ b/backend/.env.example
@ -0,0 +1,47 @@
+TZ=UTC
+PORT=3333
+HOST=localhost
+LOG_LEVEL=info
+APP_KEY=
+NODE_ENV=development
+
+# Database (MySQL / MariaDB)
+DB_HOST=127.0.0.1
+DB_PORT=3306
+DB_USER=root
+DB_PASSWORD=
+DB_DATABASE=suggestprice
+
+# Redis (queue / BullMQ)
+REDIS_HOST=127.0.0.1
+REDIS_PORT=6379
+REDIS_PASSWORD=
+
+# Sync ERP định kỳ (cron) — mặc định 2h sáng mỗi ngày, giờ Sydney
+SYNC_CRON=0 2 * * *
+SYNC_TZ=Australia/Sydney
+
+# Pricing engine
+OPENAI_API_KEY=
+OPENAI_MODEL=gpt-4o-mini
+PRICING_AUTO_APPLY_THRESHOLD_PCT=5
+PRICING_FLOOR_MARKUP=1.25
+
+# ERP (sync — bổ sung sau)
+ERP_API_URL=
+ERP_API_KEY=
+
+# eBay
+EBAY_CLIENT_ID=
+EBAY_CLIENT_SECRET=
+# EBAY_BASE_URL=https://api.ebay.com
+# Marketplace suy từ product.warehouse: 'US' -> EBAY_US, còn lại -> EBAY_AU (không cấu hình qua env).
+
+# Nguồn listing ĐÃ BÁN: 'scrape' (Puppeteer, mặc định) | 'api' (Insights API, cần Limited Release)
+EBAY_SOLD_SOURCE=scrape
+# EBAY_SCRAPE_TIMEOUT=60000          # timeout điều hướng (ms)
+# EBAY_SCRAPE_RETRIES=10             # số lần thử lại khi bị chặn
+# Tiền tệ đích cho giá sold (eBay đổi tiền theo geo-IP). Mặc định USD.
+EBAY_TARGET_CURRENCY=USD
+# Tỉ giá quy về USD (1 đơn vị -> USD) — override mặc định nếu cần chính xác hơn:
+# EBAY_FX_RATES={"VND":0.00004,"AUD":0.65,"GBP":1.27,"EUR":1.08,"CAD":0.73}
--- a/backend/.gitignore
+++ b/backend/.gitignore
@ -0,0 +1,8 @@
+node_modules
+build
+coverage
+.env
+.env.local
+tmp
+*.log
+.DS_Store
--- a/backend/README.md
+++ b/backend/README.md
@ -0,0 +1,87 @@
+# SuggestPrice API (AdonisJS v6)
+
+Backend thiết kế lại cho hệ thống SuggestPrice. Lõi: **service gợi ý giá** cập nhật giá cho cả sản phẩm **sync từ ERP** và sản phẩm **nhập tay / import Excel**.
+
+## Stack
+- **AdonisJS v6** (TypeScript) + **Lucid ORM** → **MySQL 8 / MariaDB**
+- **BullMQ + Redis** cho job nền (chạy `web` và `worker` riêng)
+- **VineJS** validate, **access tokens** cho auth (bearer)
+- Engine giá: **rule-based** (mặc định) hoặc **OpenAI** (khi cấu hình)
+
+## Cấu trúc
+```
+app/
+  controllers/   auth, products, imports, pricing, logs, histories
+  models/        user, product, log, history
+  services/      product, import, pricing, ai, erp, ebay, sync, log, history, queue
+  validators/    auth, product
+  middleware/    auth, container_bindings
+commands/        queue:work (worker), make:user
+config/          database(mysql), auth, redis(queue), cors, ...
+database/migrations/  users, access_tokens, products, logs, histories
+start/           routes, kernel, env
+```
+
+## Database (theo schema yêu cầu)
+| Bảng | Cột chính |
+|---|---|
+| `users` | username, password (hash), + `auth_access_tokens` (token) |
+| `products` | sku, condition, qty, price, ai_price, cost, package_contain, type, erp_id |
+| `logs` | username, action_name, action, product_id, meta, time |
+| `histories` | username, data_sources (JSON), data_ebay (JSON), ai_result, product_id, time |
+
+> `erp_id != null` ⇒ sản phẩm sync; `erp_id == null` ⇒ manual/import.
+
+## Cài đặt
+```bash
+cd backend-adonis
+npm install
+cp .env.example .env
+node ace generate:key          # sinh APP_KEY
+# cập nhật DB_* và REDIS_* trong .env, tạo database 'suggestprice' (utf8mb4)
+node ace migration:run
+node ace make:user admin secret123
+```
+
+## Chạy (2 process)
+```bash
+# Terminal 1 — HTTP API (cổng 3333)
+npm run dev
+
+# Terminal 2 — worker xử lý queue (pricing batch / sync)
+npm run worker
+```
+
+## API
+Tất cả (trừ register/login) cần header `Authorization: Bearer <token>`.
+
+| Method | Endpoint | Mô tả |
+|---|---|---|
+| POST | `/api/auth/register` | tạo user |
+| POST | `/api/auth/login` | đăng nhập → token |
+| GET  | `/api/auth/me` | thông tin user |
+| POST | `/api/auth/logout` | hủy token |
+| GET  | `/api/products` | danh sách (page, search, condition, type, origin) |
+| POST | `/api/products` | tạo manual |
+| GET  | `/api/products/:id` | chi tiết |
+| PATCH| `/api/products/:id` | sửa |
+| DELETE | `/api/products/:id` | xóa |
+| POST | `/api/imports/products` | import Excel (field `file`: sku, condition, qty, price) |
+| POST | `/api/pricing/suggest/:id` | gợi ý giá 1 SP (on-demand) |
+| POST | `/api/pricing/suggest/:id/approve` | duyệt & áp giá (khi vượt ngưỡng) |
+| POST | `/api/pricing/batch` | gợi ý hàng loạt (qua queue), body `{ productIds? }` |
+| GET  | `/api/logs` | nhật ký thao tác |
+| GET  | `/api/histories` | lịch sử lấy dữ liệu AI |
+| GET  | `/api/histories/:id` | chi tiết history |
+
+## Cơ chế gợi ý giá (hybrid)
+1. Lấy `data_sources` (ERP) + `data_ebay` (sold/sale) → lưu `histories`.
+2. Engine (rule/AI) ra `suggestedPrice` → ghi `ai_price`.
+3. Chênh lệch ≤ `PRICING_AUTO_APPLY_THRESHOLD_PCT` (mặc định 5%) ⇒ **tự áp** `price`; vượt ⇒ chờ **approve**.
+4. Mọi bước ghi `logs`.
+
+Chế độ: **on-demand** (`/pricing/suggest/:id`) + **batch** (`/pricing/batch` → worker).
+
+## Còn để mở (theo yêu cầu)
+- **API sync** ERP: service `sync_service.ts` đã scaffold; chỉ cần hoàn thiện `fetchProductsFromErp()` + thêm route khi có endpoint thật.
+- **eBay/OpenAI thật**: điền key trong `.env` (OpenAI: `OPENAI_API_KEY`; eBay: hoàn thiện `ebay_service.ts`).
--- a/backend/ace.js
+++ b/backend/ace.js
@ -0,0 +1,52 @@
+/*
+|--------------------------------------------------------------------------
+| JavaScript entrypoint for running ace commands
+|--------------------------------------------------------------------------
+|
+| Boots the AdonisJS application configured inside "bin/console.ts" file.
+|
+*/
+import 'reflect-metadata'
+
+/**
+ * Register the TypeScript loader so ace can import the app's command files
+ * (commands/*.ts) when run against the TypeScript source in development.
+ * In a compiled production build this dev dependency is absent, so the
+ * failure is ignored and ace runs the already-compiled JavaScript.
+ */
+try {
+  await import('ts-node-maintained/register/esm')
+} catch {}
+
+import { Ignitor, prettyPrintError } from '@adonisjs/core'
+
+/**
+ * URL to the application root. AdonisJS need it to resolve paths to file and
+ * directories for scaffolding commands
+ */
+const APP_ROOT = new URL('./', import.meta.url)
+
+/**
+ * The importer is used to import files in context of the application.
+ */
+const IMPORTER = (filePath) => {
+  if (filePath.startsWith('./') || filePath.startsWith('../')) {
+    return import(new URL(filePath, APP_ROOT).href)
+  }
+  return import(filePath)
+}
+
+new Ignitor(APP_ROOT, { importer: IMPORTER })
+  .tap((app) => {
+    app.booting(async () => {
+      await import('#start/env')
+    })
+    app.listen('SIGTERM', () => app.terminate())
+    app.listenIf(app.managedByPm2, 'SIGINT', () => app.terminate())
+  })
+  .ace()
+  .handle(process.argv.splice(2))
+  .catch((error) => {
+    process.exitCode = 1
+    prettyPrintError(error)
+  })
--- a/backend/adonisrc.ts
+++ b/backend/adonisrc.ts
@ -0,0 +1,50 @@
+import { defineConfig } from '@adonisjs/core/app'
+
+export default defineConfig({
+  /*
+  |--------------------------------------------------------------------------
+  | Commands
+  |--------------------------------------------------------------------------
+  */
+  commands: [
+    () => import('@adonisjs/core/commands'),
+    () => import('@adonisjs/lucid/commands'),
+  ],
+
+  /*
+  |--------------------------------------------------------------------------
+  | Service providers
+  |--------------------------------------------------------------------------
+  */
+  providers: [
+    () => import('@adonisjs/core/providers/app_provider'),
+    () => import('@adonisjs/core/providers/hash_provider'),
+    {
+      file: () => import('@adonisjs/core/providers/repl_provider'),
+      environment: ['repl', 'test'],
+    },
+    () => import('@adonisjs/core/providers/vinejs_provider'),
+    () => import('@adonisjs/cors/cors_provider'),
+    () => import('@adonisjs/lucid/database_provider'),
+    () => import('@adonisjs/auth/auth_provider'),
+  ],
+
+  /*
+  |--------------------------------------------------------------------------
+  | Preloads
+  |--------------------------------------------------------------------------
+  */
+  preloads: [
+    () => import('#start/routes'),
+    () => import('#start/kernel'),
+  ],
+
+  /*
+  |--------------------------------------------------------------------------
+  | Directories
+  |--------------------------------------------------------------------------
+  */
+  directories: {
+    commands: 'commands',
+  },
+})
--- a/backend/app/controllers/auth_controller.ts
+++ b/backend/app/controllers/auth_controller.ts
@ -0,0 +1,98 @@
+import type { HttpContext } from '@adonisjs/core/http'
+import User from '#models/user'
+import { loginValidator, registerValidator } from '#validators/auth'
+
+export default class AuthController {
+  /** POST /api/auth/register */
+  async register({ request, response }: HttpContext) {
+    const data = await request.validateUsing(registerValidator)
+    const user = await User.create(data)
+    return response.created({ id: user.id, username: user.username, firstName: user.firstName, lastName: user.lastName })
+  }
+
+  /** POST /api/auth/login -> trả về bearer token */
+  async login({ request, response }: HttpContext) {
+    const { username, password } = await request.validateUsing(loginValidator)
+
+    try {
+      const remoteUrl = process.env.ERP_API_URL || 'https://stage.nswteam.net'
+      const remoteResp = await fetch(`${remoteUrl}/api/login`, {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({
+          userEmail: username,
+          password,
+        }),
+      })
+
+      const remoteData = (await remoteResp.json().catch(() => null)) as
+        | { success?: boolean; data?: { firstName?: string | null; lastName?: string | null } }
+        | null
+
+      if (!remoteResp.ok || !remoteData?.success) {
+        return response.badRequest({
+          status: false,
+          message: 'Login ERP Fail, Email or password is incorrect',
+          error: 'EMAIL_OR_PASSWORD_INCORRECT',
+        })
+      }
+
+      const remoteUser = remoteData.data
+      const existingUser = await User.findBy('username', username)
+
+      const userPayload = {
+        username,
+        password,
+        firstName: remoteUser?.firstName ?? existingUser?.firstName ?? null,
+        lastName: remoteUser?.lastName ?? existingUser?.lastName ?? null,
+      }
+
+      let user = existingUser
+
+      if (user) {
+        const needsUpdate =
+          user.firstName !== userPayload.firstName || user.lastName !== userPayload.lastName
+
+        if (needsUpdate) {
+          user.firstName = userPayload.firstName
+          user.lastName = userPayload.lastName
+          await user.save()
+        }
+      } else {
+        user = await User.create(userPayload)
+      }
+
+      const token = await User.accessTokens.create(user)
+
+      return {
+        user: { id: user.id, username: user.username, firstName: user.firstName, lastName: user.lastName },
+        token: token.value!.release(),
+        type: 'bearer',
+        expiresAt: token.expiresAt,
+      }
+    } catch (error) {
+      return response.badRequest({
+        status: false,
+        message: 'Login ERP Fail',
+        error: error instanceof Error ? error.message : 'UNKNOWN_ERROR',
+        details: error,
+      })
+    }
+  }
+
+  /** POST /api/auth/logout */
+  async logout({ auth }: HttpContext) {
+    const user = auth.getUserOrFail()
+    const token = auth.user?.currentAccessToken
+    if (token) await User.accessTokens.delete(user, token.identifier)
+    return { revoked: true }
+  }
+
+  /** GET /api/auth/me */
+  async me({ auth }: HttpContext) {
+    const user = auth.getUserOrFail()
+    return { id: user.id, username: user.username, firstName: user.firstName, lastName: user.lastName }
+  }
+}
--- a/backend/app/controllers/histories_controller.ts
+++ b/backend/app/controllers/histories_controller.ts
@ -0,0 +1,21 @@
+import type { HttpContext } from '@adonisjs/core/http'
+import History from '#models/history'
+
+export default class HistoriesController {
+  /** GET /api/histories?productId=&page=&perPage= */
+  async index({ request }: HttpContext) {
+    const page = Number(request.input('page', 1))
+    const perPage = Number(request.input('perPage', 25))
+    const productId = request.input('productId')
+
+    const query = History.query().orderBy('time', 'desc')
+    if (productId) query.where('product_id', productId)
+
+    return query.paginate(page, perPage)
+  }
+
+  /** GET /api/histories/:id */
+  async show({ params }: HttpContext) {
+    return History.findOrFail(params.id)
+  }
+}
--- a/backend/app/controllers/imports_controller.ts
+++ b/backend/app/controllers/imports_controller.ts
@ -0,0 +1,26 @@
+import type { HttpContext } from '@adonisjs/core/http'
+import ImportService from '#services/import_service'
+
+export default class ImportsController {
+  /**
+   * POST /api/imports/products  (multipart, field "file")
+   * Excel gồm cột: sku, condition, qty, price
+   */
+  async products({ request, response, auth }: HttpContext) {
+    const file = request.file('file', {
+      size: '20mb',
+      extnames: ['xlsx', 'xls', 'csv'],
+    })
+
+    if (!file) {
+      return response.badRequest({ error: 'Thiếu file (field "file")' })
+    }
+    if (!file.isValid) {
+      return response.badRequest({ error: file.errors })
+    }
+
+    // file.tmpPath có sẵn khi autoProcess=true
+    const summary = await ImportService.importFromFile(file.tmpPath!, auth.getUserOrFail().username)
+    return summary
+  }
+}
--- a/backend/app/controllers/logs_controller.ts
+++ b/backend/app/controllers/logs_controller.ts
@ -0,0 +1,20 @@
+import type { HttpContext } from '@adonisjs/core/http'
+import Log from '#models/log'
+
+export default class LogsController {
+  /** GET /api/logs?productId=&action=&page=&perPage= */
+  async index({ request }: HttpContext) {
+    const page = Number(request.input('page', 1))
+    const perPage = Number(request.input('perPage', 25))
+    const productId = request.input('productId')
+    const action = request.input('action')
+    const username = request.input('username')
+
+    const query = Log.query().orderBy('time', 'desc')
+    if (productId) query.where('product_id', productId)
+    if (action) query.where('action', action)
+    if (username) query.where('username', username)
+
+    return query.paginate(page, perPage)
+  }
+}
--- a/backend/app/controllers/pricing_controller.ts
+++ b/backend/app/controllers/pricing_controller.ts
@ -0,0 +1,32 @@
+import type { HttpContext } from '@adonisjs/core/http'
+import vine from '@vinejs/vine'
+import PricingService from '#services/pricing_service'
+import { enqueuePricingBatch } from '#services/queue_service'
+
+const approveValidator = vine.compile(
+  vine.object({ price: vine.number().min(0).optional() })
+)
+
+export default class PricingController {
+  /** POST /api/pricing/suggest/:id  (on-demand, đồng bộ) */
+  async suggest({ params, auth }: HttpContext) {
+    return PricingService.suggestForProduct(Number(params.id), auth.getUserOrFail().username)
+  }
+
+  /** POST /api/pricing/suggest/:id/approve  (duyệt & áp giá khi vượt ngưỡng) */
+  async approve({ params, request, auth }: HttpContext) {
+    const { price } = await request.validateUsing(approveValidator)
+    return PricingService.approve(Number(params.id), auth.getUserOrFail().username, price)
+  }
+
+  /**
+   * POST /api/pricing/batch  (chạy hàng loạt qua queue)
+   * body: { productIds?: number[] }  — bỏ trống = toàn bộ
+   */
+  async batch({ request, auth }: HttpContext) {
+    const productIds: number[] =
+      request.input('productIds') ?? (await PricingService.productIdsForBatch())
+    await enqueuePricingBatch(productIds, auth.getUserOrFail().username)
+    return { enqueued: productIds.length }
+  }
+}
--- a/backend/app/controllers/products_controller.ts
+++ b/backend/app/controllers/products_controller.ts
@ -0,0 +1,74 @@
+import type { HttpContext } from '@adonisjs/core/http'
+import Product from '#models/product'
+import ProductService from '#services/product_service'
+import {
+  createProductValidator,
+  updateProductValidator,
+  listProductValidator,
+} from '#validators/product'
+
+export default class ProductsController {
+  /** GET /api/products */
+  async index({ request }: HttpContext) {
+    const params = await request.validateUsing(listProductValidator)
+    const page = params.page ?? 1
+    const perPage = params.perPage ?? 25
+    const order = params.order ?? 'created_at'
+    const direction: 'asc' | 'desc' = params.direction === 'asc' ? 'asc' : 'desc'
+
+    const query = Product.query()
+
+    if (params.condition) query.where('condition', params.condition)
+    if (params.type) query.where('type', params.type)
+    if (params.warehouse) query.where('warehouse', params.warehouse)
+    if (params.sku) {
+      // FULLTEXT khi có, fallback LIKE
+      query.where((b) => {
+        b.where('sku', 'like', `%${params.sku}%`)
+      })
+    }
+
+    return query.orderBy(order, direction).paginate(page, perPage)
+  }
+
+  /** GET /api/products/:id */
+  async show({ params }: HttpContext) {
+    return Product.findOrFail(params.id)
+  }
+
+  /** POST /api/products  (manual) */
+  async store({ request, response, auth }: HttpContext) {
+    const data = await request.validateUsing(createProductValidator)
+    const product = await ProductService.create(data, auth.getUserOrFail().username)
+    return response.created(product)
+  }
+
+  /** PATCH /api/products/:id */
+  async update({ params, request, auth }: HttpContext) {
+    const data = await request.validateUsing(updateProductValidator)
+    return ProductService.update(params.id, data, auth.getUserOrFail().username)
+  }
+
+  /** DELETE /api/products/:id */
+  async destroy({ params, response, auth }: HttpContext) {
+    await ProductService.destroy(params.id, auth.getUserOrFail().username)
+    return response.noContent()
+  }
+
+  async syncProductBySku({ request }: HttpContext) {
+    const params = await request.validateUsing(listProductValidator)
+    const query = Product.query()
+
+    if (params.condition) query.where('condition', params.condition)
+    if (params.warehouse) query.where('warehouse', params.warehouse)
+    if (params.type) query.where('type', params.type)
+    if (params.sku) {
+      // FULLTEXT khi có, fallback LIKE
+      query.where((b) => {
+        b.where('sku', 'like', `%${params.sku}%`)
+      })
+    }
+
+    return query.first()
+  }
+}
--- a/backend/app/exceptions/handler.ts
+++ b/backend/app/exceptions/handler.ts
@ -0,0 +1,25 @@
+import app from '@adonisjs/core/services/app'
+import { HttpContext, ExceptionHandler } from '@adonisjs/core/http'
+import type { StatusPageRange, StatusPageRenderer } from '@adonisjs/core/types/http'
+
+export default class HttpExceptionHandler extends ExceptionHandler {
+  /**
+   * In debug mode, the exception handler returns detailed errors.
+   */
+  protected debug = !app.inProduction
+
+  /**
+   * Render validation/known errors as JSON for an API-only backend.
+   */
+  protected renderStatusPages = false
+
+  protected statusPages: Record<StatusPageRange, StatusPageRenderer> = {}
+
+  async handle(error: unknown, ctx: HttpContext) {
+    return super.handle(error, ctx)
+  }
+
+  async report(error: unknown, ctx: HttpContext) {
+    return super.report(error, ctx)
+  }
+}
--- a/backend/app/middleware/auth_middleware.ts
+++ b/backend/app/middleware/auth_middleware.ts
@ -0,0 +1,20 @@
+import type { HttpContext } from '@adonisjs/core/http'
+import type { NextFn } from '@adonisjs/core/types/http'
+import type { Authenticators } from '@adonisjs/auth/types'
+
+/**
+ * Auth middleware is used to authenticate HTTP requests and deny
+ * access to unauthenticated users.
+ */
+export default class AuthMiddleware {
+  redirectTo = '/login'
+
+  async handle(
+    ctx: HttpContext,
+    next: NextFn,
+    options: { guards?: (keyof Authenticators)[] } = {}
+  ) {
+    await ctx.auth.authenticateUsing(options.guards, { loginRoute: this.redirectTo })
+    return next()
+  }
+}
--- a/backend/app/middleware/container_bindings_middleware.ts
+++ b/backend/app/middleware/container_bindings_middleware.ts
@ -0,0 +1,15 @@
+import { Logger } from '@adonisjs/core/logger'
+import { HttpContext } from '@adonisjs/core/http'
+import type { NextFn } from '@adonisjs/core/types/http'
+
+/**
+ * The container bindings middleware binds classes to their request
+ * specific value using the container resolver.
+ */
+export default class ContainerBindingsMiddleware {
+  handle(ctx: HttpContext, next: NextFn) {
+    ctx.containerResolver.bindValue(HttpContext, ctx)
+    ctx.containerResolver.bindValue(Logger, ctx.logger)
+    return next()
+  }
+}
--- a/backend/app/models/history.ts
+++ b/backend/app/models/history.ts
@ -0,0 +1,61 @@
+import { DateTime } from 'luxon'
+import { BaseModel, column, belongsTo } from '@adonisjs/lucid/orm'
+import type { BelongsTo } from '@adonisjs/lucid/types/relations'
+import Product from '#models/product'
+
+export interface SupplierPricePoint {
+  price: number
+  date?: string
+  source?: string
+  [k: string]: any
+}
+
+export interface EbayData {
+  sold: Array<Record<string, any>>
+  sale: Array<Record<string, any>>
+}
+
+/**
+ * Snapshot dữ liệu mỗi lần lấy về để đưa AI gợi ý giá.
+ * Lưu nguyên đầu vào (supplier + eBay) phục vụ audit & re-run.
+ */
+export default class History extends BaseModel {
+  @column({ isPrimary: true })
+  declare id: number
+
+  @column()
+  declare username: string
+
+  @column()
+  declare productId: number
+
+  /** [{ price, date, source, ... }, ...] — lịch sử giá nguồn (ERP, supplier). */
+  @column({
+    columnName: 'data_sources',
+    prepare: (v) => JSON.stringify(v ?? []),
+    consume: (v) => (typeof v === 'string' ? JSON.parse(v) : v),
+  })
+  declare dataSources: SupplierPricePoint[]
+
+  /** { sold: [...], sale: [...] } — dữ liệu eBay (đã bán / đang bán). */
+  @column({
+    columnName: 'data_ebay',
+    prepare: (v) => JSON.stringify(v ?? { sold: [], sale: [] }),
+    consume: (v) => (typeof v === 'string' ? JSON.parse(v) : v),
+  })
+  declare dataEbay: EbayData
+
+  /** Kết quả AI tại thời điểm đó (tùy chọn). */
+  @column({
+    columnName: 'ai_result',
+    prepare: (v) => (v === null || v === undefined ? null : JSON.stringify(v)),
+    consume: (v) => (typeof v === 'string' ? JSON.parse(v) : v),
+  })
+  declare aiResult: Record<string, any> | null
+
+  @column.dateTime({ autoCreate: true, columnName: 'time' })
+  declare time: DateTime
+
+  @belongsTo(() => Product)
+  declare product: BelongsTo<typeof Product>
+}
--- a/backend/app/models/log.ts
+++ b/backend/app/models/log.ts
@ -0,0 +1,39 @@
+import { DateTime } from 'luxon'
+import { BaseModel, column, belongsTo } from '@adonisjs/lucid/orm'
+import type { BelongsTo } from '@adonisjs/lucid/types/relations'
+import Product from '#models/product'
+
+/**
+ * Nhật ký thao tác CUD của người dùng lên sản phẩm.
+ */
+export default class Log extends BaseModel {
+  @column({ isPrimary: true })
+  declare id: number
+
+  @column()
+  declare username: string
+
+  /** Tên hành động dễ đọc, vd: "Tạo sản phẩm", "Cập nhật giá". */
+  @column()
+  declare actionName: string
+
+  /** Mã hành động: create | update | delete | import | sync | suggest. */
+  @column()
+  declare action: string
+
+  @column()
+  declare productId: number | null
+
+  /** Dữ liệu trước/sau (diff) — tùy chọn, hữu ích để truy vết. */
+  @column({
+    prepare: (v) => (v === null || v === undefined ? null : JSON.stringify(v)),
+    consume: (v) => (typeof v === 'string' ? JSON.parse(v) : v),
+  })
+  declare meta: Record<string, any> | null
+
+  @column.dateTime({ autoCreate: true, columnName: 'time' })
+  declare time: DateTime
+
+  @belongsTo(() => Product)
+  declare product: BelongsTo<typeof Product>
+}
--- a/backend/app/models/product.ts
+++ b/backend/app/models/product.ts
@ -0,0 +1,72 @@
+import { DateTime } from 'luxon'
+import { BaseModel, column, hasMany } from '@adonisjs/lucid/orm'
+import type { HasMany } from '@adonisjs/lucid/types/relations'
+import Log from '#models/log'
+import History from '#models/history'
+
+/**
+ * Một product có thể đến từ ERP (sync) hoặc nhập thủ công.
+ *   - erpId != null  -> sản phẩm sync từ ERP
+ *   - erpId == null  -> sản phẩm manual / import excel
+ */
+export default class Product extends BaseModel {
+  @column({ isPrimary: true })
+  declare id: number
+
+  @column()
+  declare sku: string
+
+  @column()
+  declare condition: string
+
+  @column()
+  declare qty: number
+
+  /** Giá bán hiện tại (đang áp dụng). */
+  @column()
+  declare price: number
+
+  /** Giá do AI gợi ý gần nhất (có thể chưa được áp dụng). */
+  @column()
+  declare aiPrice: number | null
+
+  /** Giá vốn / chi phí theo nhiều currency. */
+  @column({
+    prepare: (value) => (value == null ? null : JSON.stringify(value)),
+    consume: (value) => (typeof value === 'string' ? JSON.parse(value) : value),
+  })
+  declare costs: Array<{ currency: string; price: number }> | null
+
+  /** Số lượng đơn vị trong 1 package. */
+  @column()
+  declare packageContain: string | null
+
+  /** Loại / nhóm sản phẩm. */
+  @column()
+  declare type: string | null
+
+  /** ID tham chiếu bên ERP (null = manual). */
+  @column()
+  declare erpId: string | null
+
+  @column.dateTime({ autoCreate: true })
+  declare createdAt: DateTime
+
+  @column.dateTime({ autoCreate: true, autoUpdate: true })
+  declare updatedAt: DateTime
+
+  @hasMany(() => Log)
+  declare logs: HasMany<typeof Log>
+
+  @hasMany(() => History)
+  declare histories: HasMany<typeof History>
+
+  /** Kho hàng. */
+  @column()
+  declare warehouse: string | null
+
+  /** true nếu sản phẩm được sync từ ERP. */
+  get isSynced() {
+    return this.erpId !== null && this.erpId !== undefined
+  }
+}
--- a/backend/app/models/user.ts
+++ b/backend/app/models/user.ts
@ -0,0 +1,40 @@
+import { DateTime } from 'luxon'
+import hash from '@adonisjs/core/services/hash'
+import { compose } from '@adonisjs/core/helpers'
+import { BaseModel, column } from '@adonisjs/lucid/orm'
+import { withAuthFinder } from '@adonisjs/auth/mixins/lucid'
+import { DbAccessTokensProvider } from '@adonisjs/auth/access_tokens'
+
+const AuthFinder = withAuthFinder(() => hash.use('scrypt'), {
+  uids: ['username'],
+  passwordColumnName: 'password',
+})
+
+export default class User extends compose(BaseModel, AuthFinder) {
+  @column({ isPrimary: true })
+  declare id: number
+
+  @column()
+  declare username: string
+
+  @column({ serializeAs: null })
+  declare password: string
+
+  @column.dateTime({ autoCreate: true })
+  declare createdAt: DateTime
+
+  @column.dateTime({ autoCreate: true, autoUpdate: true })
+  declare updatedAt: DateTime | null
+
+  @column()
+  declare firstName: string | null
+
+  @column()
+  declare lastName: string | null
+
+  /**
+   * Bearer tokens used to authenticate API requests.
+   * (Bảng auth_access_tokens — chính là "token" trong schema của bạn.)
+   */
+  static accessTokens = DbAccessTokensProvider.forModel(User)
+}
--- a/backend/app/services/ai_service.ts
+++ b/backend/app/services/ai_service.ts
@ -0,0 +1,178 @@
+import env from '#start/env'
+import logger from '@adonisjs/core/services/logger'
+import type Product from '#models/product'
+import type { SupplierPricePoint, EbayData } from '#models/history'
+import axios from 'axios'
+
+export interface SuggestionInput {
+  product: Product
+  dataSources: SupplierPricePoint[]
+  dataEbay: EbayData
+}
+
+export interface Suggestion {
+  suggestedPrice: number
+  priceRange: { min: number; max: number }
+  reasoning: string
+  engine: 'rule' | 'ai'
+}
+
+const round = (n: number) => Math.round(n * 100) / 100
+const median = (arr: number[]) => {
+  if (!arr.length) return undefined
+  const s = [...arr].sort((a, b) => a - b)
+  const m = Math.floor(s.length / 2)
+  return s.length % 2 ? s[m] : (s[m - 1] + s[m]) / 2
+}
+
+/**
+ * Engine gợi ý giá: dùng OpenAI khi cấu hình, ngược lại fallback rule-based
+ * (port từ heuristic của prototype cũ).
+ */
+export default class AiService {
+  static async suggest(input: SuggestionInput): Promise<Suggestion> {
+    try {
+      return await this.openAi(input)
+    } catch (error) {
+      logger.error({ err: error }, 'OpenAI suggest lỗi — fallback rule-based')
+      return this.ruleBased(input)
+    }
+  }
+
+  // --- Rule-based ---
+  private static ruleBased({ product, dataSources, dataEbay }: SuggestionInput): Suggestion {
+    const floorMarkup = Number(env.get('PRICING_FLOOR_MARKUP', 1.25))
+    const supplierCost =
+      (product.costs?.find((entry) => entry.currency === 'USD')?.price ?? Number(product.costs?.[0]?.price)) ||
+      dataSources.at(-1)?.price ||
+      (dataSources.length ? dataSources.reduce((a, b) => a + b.price, 0) / dataSources.length : 100)
+
+    const soldMed = median(dataEbay.sold.map((x) => Number(x.price)).filter(Boolean))
+    const saleMed = median(dataEbay.sale.map((x) => Number(x.price)).filter(Boolean))
+
+    const anchor = soldMed ?? saleMed ?? supplierCost * 1.6
+    const floor = round(supplierCost * floorMarkup)
+    const suggested = round(Math.max(anchor * 0.98, floor))
+
+    const reasoning = [
+      `Chi phí supplier ~$${round(supplierCost)} (condition ${product.condition}).`,
+      soldMed != null ? `Giá đã bán eBay (median) ~$${round(soldMed)}.` : 'Chưa có dữ liệu sold.',
+      saleMed != null ? `Giá đang bán (median) ~$${round(saleMed)}.` : 'Chưa có dữ liệu sale.',
+      `Đề xuất $${suggested}: neo quanh thị trường, nhỉnh dưới median để dễ bán, giữ sàn $${floor}.`,
+    ].join(' ')
+
+    return {
+      suggestedPrice: suggested,
+      priceRange: { min: round(suggested * 0.92), max: round(suggested * 1.08) },
+      reasoning,
+      engine: 'rule',
+    }
+  }
+
+  // --- OpenAI ---
+  /**
+   * System prompt cho engine AI. Tách riêng để dễ tinh chỉnh & kiểm thử.
+   *
+   * Nguyên tắc định giá (giữ đồng bộ với rule-based để kết quả nhất quán):
+   *   - Đơn vị: USD.
+   *   - Neo giá quanh giá eBay đã bán (sold) > đang bán (sale) > chi phí supplier.
+   *   - Sàn giá = chi phí supplier * floorMarkup để luôn đảm bảo biên lợi nhuận.
+   *   - Khử nhiễu: loại các điểm giá lệch quá xa median trước khi tính.
+   *   - BẮT BUỘC trả về đúng JSON schema (không kèm markdown/giải thích ngoài JSON).
+   */
+  static buildSystemPrompt(floorMarkup: number): string {
+    return [
+      'Bạn là chuyên gia định giá listing trên eBay (thị trường Úc/Mỹ).',
+      'Nhiệm vụ: dựa trên chi phí supplier và dữ liệu giá eBay (đã bán "sold" và đang bán "sale"),',
+      'đề xuất MỘT mức giá listing tối ưu bằng USD: cạnh tranh để dễ bán nhưng vẫn đảm bảo biên lợi nhuận.',
+      '',
+      'Quy tắc định giá:',
+      '1. Ưu tiên neo giá theo median giá ĐÃ BÁN (sold); nếu thiếu, dùng median giá ĐANG BÁN (sale);',
+      '   nếu vẫn thiếu, suy ra từ chi phí supplier với biên hợp lý (~1.6x).',
+      '2. Khử nhiễu: loại bỏ các điểm giá quá cao hoặc quá thấp bất thường so với median trước khi tính.',
+      `3. Sàn giá tuyệt đối = chi phí supplier (USD) * ${floorMarkup}. Giá đề xuất KHÔNG được thấp hơn sàn này.`,
+      '4. Nhỉnh dưới median thị trường một chút để tăng khả năng bán.',
+      '5. priceRange là khoảng dao động hợp lý quanh giá đề xuất (min < suggestedPrice < max).',
+      '',
+      'Chỉ trả về DUY NHẤT một object JSON hợp lệ (không markdown, không text ngoài JSON) theo schema:',
+      '{',
+      '  "suggestedPrice": number,            // giá đề xuất (USD), > 0',
+      '  "priceRange": { "min": number, "max": number },',
+      '  "reasoning": string                  // giải thích ngắn gọn bằng tiếng Việt',
+      '}',
+    ].join('\n')
+  }
+
+  private static async openAi({ product, dataSources, dataEbay }: SuggestionInput): Promise<Suggestion> {
+    const floorMarkup = Number(env.get('PRICING_FLOOR_MARKUP', 1.25))
+    const payload = {
+      sku: product.sku,
+      condition: product.condition,
+      cost: product.costs?.find((entry) => entry.currency === 'USD')?.price ?? product.costs?.[0]?.price ?? null,
+      supplier: dataSources,
+      ebaySold: dataEbay.sold,
+      ebaySale: dataEbay.sale,
+    }
+    const gptPayload = {
+      model: process.env.OPENAI_MODEL,
+      response_format: { type: 'json_object' },
+      messages: [
+        { role: 'system', content: this.buildSystemPrompt(floorMarkup) },
+        { role: 'user', content: JSON.stringify(payload) },
+      ],
+    }
+    const externalApiUrl = process.env.ERP_API_URL;
+
+    const remoteResp = await axios.post(
+      externalApiUrl + '/api/transferPostData',
+      {
+        urlAPI: '/api/open-ai-sfp/model-image-info',
+        data: gptPayload,
+      },
+      {
+        headers: {
+          Authorization: 'Bearer ' + process.env.ERP_API_KEY,
+        },
+      }
+    )
+    if (!remoteResp.data?.Status || remoteResp.data?.Status !== 'OK') {
+      throw new Error('OpenAI suggest lỗi: ' + JSON.stringify(remoteResp.data))
+    }
+    return this.normalize(remoteResp.data?.data)
+  }
+
+  /**
+   * Chuẩn hoá kết quả AI về đúng shape `Suggestion`.
+   * AI có thể trả về string JSON, object lồng trong nhiều dạng key khác nhau,
+   * hoặc thiếu priceRange — ta coerce an toàn để downstream luôn dùng được.
+   */
+  private static normalize(raw: any): Suggestion {
+    let data = raw
+    if (typeof data === 'string') {
+      try {
+        data = JSON.parse(data)
+      } catch {
+        throw new Error('OpenAI trả về không phải JSON hợp lệ: ' + raw)
+      }
+    }
+    // một số API bọc kết quả trong { data } hoặc { result }
+    data = data?.suggestedPrice != null ? data : (data?.data ?? data?.result ?? data)
+
+    const suggestedPrice = round(Number(data?.suggestedPrice))
+    if (!Number.isFinite(suggestedPrice) || suggestedPrice <= 0) {
+      throw new Error('OpenAI không trả về suggestedPrice hợp lệ: ' + JSON.stringify(raw))
+    }
+
+    const min = Number(data?.priceRange?.min)
+    const max = Number(data?.priceRange?.max)
+    return {
+      suggestedPrice,
+      priceRange: {
+        min: Number.isFinite(min) ? round(min) : round(suggestedPrice * 0.92),
+        max: Number.isFinite(max) ? round(max) : round(suggestedPrice * 1.08),
+      },
+      reasoning: typeof data?.reasoning === 'string' ? data.reasoning : '',
+      engine: 'ai',
+    }
+  }
+}
--- a/backend/app/services/ebay_scraper_service.ts
+++ b/backend/app/services/ebay_scraper_service.ts
@ -0,0 +1,300 @@
+import logger from '@adonisjs/core/services/logger'
+import type { Browser, Page } from 'puppeteer'
+
+/** 1 listing đã bán scrape được từ trang kết quả eBay. */
+export interface ScrapedSoldItem {
+  id: string
+  link_detail: string
+  title: string
+  description: string
+  condition_item: string
+  price: number
+  currencyID: string
+  priceText: string
+  date: string
+  source: 'ebay-scrape'
+  [k: string]: any
+}
+
+/** Map marketplace id -> domain eBay tương ứng để build URL search. */
+const MARKETPLACE_DOMAIN: Record<string, string> = {
+  EBAY_US: 'www.ebay.com',
+  EBAY_AU: 'www.ebay.com.au',
+  EBAY_GB: 'www.ebay.co.uk',
+  EBAY_DE: 'www.ebay.de',
+  EBAY_CA: 'www.ebay.ca',
+}
+
+const wait = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms))
+
+/**
+ * Scrape listing ĐÃ BÁN (sold/completed) trên eBay bằng Puppeteer.
+ *
+ * Dùng khi không có quyền gọi Marketplace Insights API (Limited Release).
+ * Browser được tái sử dụng (lazy singleton) để tiết kiệm tài nguyên khi
+ * chạy batch; nhớ gọi `EbayScraperService.close()` khi tiến trình kết thúc
+ * (command / worker) để giải phóng Chromium.
+ */
+export default class EbayScraperService {
+  private static _browser: Browser | null = null
+  private static _launching: Promise<Browser> | null = null
+
+  /** Lấy (hoặc khởi tạo) browser dùng chung. Tránh launch trùng khi gọi song song. */
+  private static async getBrowser(): Promise<Browser> {
+    if (this._browser?.connected) return this._browser
+    if (this._launching) return this._launching
+
+    this._launching = (async () => {
+      const { default: puppeteer } = await import('puppeteer')
+      const browser = await puppeteer.launch({
+        headless: true,
+        args: [
+          '--no-sandbox',
+          '--disable-setuid-sandbox',
+          '--disable-dev-shm-usage',
+          '--disable-gpu',
+          '--no-zygote',
+        ],
+      })
+      this._browser = browser
+      this._launching = null
+      return browser
+    })()
+
+    return this._launching
+  }
+
+  /** Đóng browser dùng chung (gọi khi command/worker tắt). */
+  static async close(): Promise<void> {
+    if (this._browser) {
+      await this._browser.close().catch(() => {})
+      this._browser = null
+    }
+  }
+
+  /** Build URL trang kết quả "đã bán" của eBay cho 1 sku + condition. */
+  private static buildSoldUrl(sku: string, conditionId: string | undefined, marketplace: string): string {
+    const domain = MARKETPLACE_DOMAIN[marketplace] || 'www.ebay.com'
+    const params = new URLSearchParams({
+      _nkw: sku,
+      LH_Sold: '1',
+      LH_Complete: '1',
+      _ipg: '60', // items per page
+    })
+    if (conditionId) params.set('LH_ItemCondition', conditionId)
+    return `https://${domain}/sch/i.html?${params.toString()}`
+  }
+
+  /**
+   * Scrape danh sách listing đã bán cho 1 SKU.
+   * @param conditionId  ID condition của eBay (1000/3000...) để lọc trên URL.
+   * @param marketplace  Marketplace eBay (EBAY_US/EBAY_AU...) -> chọn domain.
+   */
+  static async scrapeSold(
+    rawSku: string,
+    conditionId?: string,
+    marketplace: string = 'EBAY_AU'
+  ): Promise<ScrapedSoldItem[]> {
+    const sku = rawSku?.trim()
+    if (!sku) return []
+
+    const url = this.buildSoldUrl(sku, conditionId, marketplace)
+    const timeout = Number(process.env.EBAY_SCRAPE_TIMEOUT || 60000)
+    const maxRetries = Number(process.env.EBAY_SCRAPE_RETRIES || 10)
+
+    const browser = await this.getBrowser()
+    let page: Page | null = null
+    try {
+      page = await browser.newPage()
+      await page.setUserAgent(
+        'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 ' +
+          '(KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36'
+      )
+      await page.setExtraHTTPHeaders({ 'Accept-Language': 'en-US,en;q=0.9' })
+      // Ẩn dấu hiệu automation để giảm khả năng bị eBay chặn.
+      await page.evaluateOnNewDocument(() => {
+        Object.defineProperty(navigator, 'webdriver', { get: () => undefined })
+      })
+
+      // Tối ưu băng thông: chặn ảnh, font, media (KHÔNG chặn stylesheet/script
+      // để trang search render đúng, tránh bị eBay trả "Error Page").
+      await page.setRequestInterception(true)
+      page.on('request', (req) => {
+        if (['image', 'font', 'media'].includes(req.resourceType())) req.abort()
+        else req.continue()
+      })
+
+      // QUAN TRỌNG: eBay chặn truy cập trực tiếp vào /sch/i.html (trả Error Page).
+      // Phải vào homepage trước để lấy cookie/session, rồi mới điều hướng tới search.
+      const origin = new URL(url).origin
+      await page.goto(origin + '/', { waitUntil: 'domcontentloaded', timeout }).catch(() => {})
+      await wait(1500)
+
+      await page.goto(url, { waitUntil: 'networkidle2', timeout })
+
+      // Chờ qua màn anti-bot / Error Page / chờ card xuất hiện.
+      let retries = 0
+      while (retries < maxRetries) {
+        const html = await this.safeGetContent(page)
+        const blocked =
+          html.includes('Checking your browser') ||
+          html.includes('Pardon Our Interruption') ||
+          html.includes('Something went wrong on our end')
+        if (blocked) {
+          // Bị chặn -> quay lại homepage rồi vào lại search.
+          await page.goto(new URL(url).origin + '/', { waitUntil: 'domcontentloaded', timeout }).catch(() => {})
+          await wait(1500)
+          await page.goto(url, { waitUntil: 'networkidle2', timeout }).catch(() => {})
+          retries++
+          continue
+        }
+        if (await page.$('li.s-card--horizontal, li.s-item, li.s-card')) break
+        await wait(2000)
+        retries++
+      }
+
+      // Chỉ lấy text thô từ DOM; toàn bộ parse/quy đổi tiền tệ làm ở Node để dễ kiểm thử.
+      const raw = await page.$$eval(
+        'li.s-card--horizontal, li.s-item, li.s-card',
+        (nodes) =>
+          nodes.map((node) => {
+            const linkEl: any =
+              node.querySelector('div.su-image a') ||
+              node.querySelector('a.s-card__link, a.s-item__link, a.su-link')
+            return {
+              link_detail: linkEl && linkEl.href ? linkEl.href : '',
+              listingId: node.getAttribute('data-listingid') || '',
+              title: (node.querySelector('.s-card__title, .s-item__title')?.textContent || '')
+                .replace(/New\s*listing/i, '')
+                .trim(),
+              condition_item: (
+                node.querySelector('.s-card__subtitle, .SECONDARY_INFO, .s-item__subtitle')?.textContent || ''
+              ).trim(),
+              caption: (
+                node.querySelector('.s-card__caption, .s-item__caption, .POSITIVE')?.textContent || ''
+              ).trim(),
+              priceText: (node.querySelector('.s-card__price, .s-item__price')?.textContent || '').trim(),
+            }
+          })
+      )
+
+      const targetCurrency = (process.env.EBAY_TARGET_CURRENCY || 'USD').toUpperCase()
+      const fx = this.fxRates()
+      let skippedFx = 0
+
+      const normalized = raw
+        .map((it) => {
+          // Bỏ qua dòng quảng cáo "Shop on eBay" / không phải listing đã bán.
+          if (!/sold/i.test(it.caption)) return null
+
+          const idMatch = it.link_detail.match(/\/itm\/(\d+)/)
+          const id = idMatch ? idMatch[1] : it.listingId
+          if (!id) return null
+
+          const { amount, currency } = this.parsePrice(it.priceText)
+          if (!Number.isFinite(amount) || amount <= 0) return null
+
+          // Quy đổi về target currency (eBay đổi tiền theo geo-IP nên có thể trả VND/AUD...).
+          const cur = currency || targetCurrency
+          const converted = this.convert(amount, cur, targetCurrency, fx)
+          if (converted == null) {
+            skippedFx++
+            return null
+          }
+
+          return {
+            id,
+            link_detail: it.link_detail,
+            title: it.title || sku,
+            description: it.title || '',
+            condition_item: it.condition_item,
+            price: Math.round(converted * 100) / 100,
+            currencyID: targetCurrency,
+            priceText: it.priceText,
+            date: this.parseDate(it.caption),
+            source: 'ebay-scrape' as const,
+          }
+        })
+        .filter(Boolean) as ScrapedSoldItem[]
+
+      logger.info(
+        { sku, count: normalized.length, skippedFx, targetCurrency, url },
+        'eBay scrape sold xong'
+      )
+      return normalized
+    } catch (err) {
+      logger.error({ err, url }, `eBay scrape lỗi cho SKU ${sku}`)
+      return []
+    } finally {
+      if (page) await page.close().catch(() => {})
+    }
+  }
+
+  /** Lấy content an toàn (page có thể đang điều hướng). */
+  private static async safeGetContent(page: Page): Promise<string> {
+    try {
+      return await page.content()
+    } catch {
+      return ''
+    }
+  }
+
+  /** Parse text ngày eBay (vd "Sold  Mar 12, 2024") -> "YYYY-MM-DD"; lỗi thì rỗng. */
+  private static parseDate(text?: string): string {
+    if (!text) return ''
+    const m = text.match(/([A-Za-z]{3,}\.?\s+\d{1,2},?\s+\d{4})/)
+    const cleaned = (m ? m[1] : text.replace(/sold\s*/i, '')).trim()
+    const ts = Date.parse(cleaned)
+    if (Number.isNaN(ts)) return ''
+    return new Date(ts).toISOString().slice(0, 10)
+  }
+
+  /** Tách số tiền + mã tiền tệ từ text giá eBay (vd "AU $1,234.50", "2.702.130 VND"). */
+  private static parsePrice(text: string): { amount: number; currency: string } {
+    const t = (text || '').toUpperCase()
+    let currency = ''
+    if (t.includes('VND') || text.includes('₫')) currency = 'VND'
+    else if (t.includes('GBP') || text.includes('£')) currency = 'GBP'
+    else if (t.includes('EUR') || text.includes('€')) currency = 'EUR'
+    else if (t.includes('AUD') || t.includes('AU $') || t.includes('AU$')) currency = 'AUD'
+    else if (t.includes('CAD') || t.includes('C $') || t.includes('C$')) currency = 'CAD'
+    else if (t.includes('USD') || t.includes('US $') || t.includes('US$') || text.includes('$')) currency = 'USD'
+
+    // Lấy số đầu tiên (eBay có thể hiện khoảng giá "x to y" -> lấy x). Comma = phân cách nghìn.
+    const numMatch = text.replace(/,/g, '').match(/\d+(\.\d+)?/)
+    const amount = numMatch ? Number(numMatch[0]) : NaN
+    return { amount, currency }
+  }
+
+  /** Tỉ giá quy về USD (1 đơn vị tiền -> USD). Override qua env EBAY_FX_RATES (JSON). */
+  private static fxRates(): Record<string, number> {
+    const defaults: Record<string, number> = {
+      USD: 1,
+      VND: 0.00004,
+      AUD: 0.65,
+      GBP: 1.27,
+      EUR: 1.08,
+      CAD: 0.73,
+    }
+    try {
+      const override = process.env.EBAY_FX_RATES ? JSON.parse(process.env.EBAY_FX_RATES) : {}
+      return { ...defaults, ...override }
+    } catch {
+      return defaults
+    }
+  }
+
+  /** Quy đổi amount từ `from` sang `to`. Trả null nếu thiếu tỉ giá (để bỏ qua item). */
+  private static convert(
+    amount: number,
+    from: string,
+    to: string,
+    fx: Record<string, number>
+  ): number | null {
+    if (from === to) return amount
+    const rFrom = fx[from]
+    const rTo = fx[to]
+    if (!rFrom || !rTo) return null
+    return (amount * rFrom) / rTo
+  }
+}
--- a/backend/app/services/ebay_service.ts
+++ b/backend/app/services/ebay_service.ts
@ -0,0 +1,267 @@
+import type Product from '#models/product'
+import type { EbayData } from '#models/history'
+
+const EBAY_CONDITION_ID: Record<string, string> = {
+  NEW: '1000',
+  OPEN_BOX: '1500',
+  REFURBISHED: '2000',
+  USED: '3000',
+  FOR_PARTS: '7000',
+}
+
+/** Scope cơ bản — đủ cho Browse API (listing đang bán). */
+const SCOPE_BASE = 'https://api.ebay.com/oauth/api_scope'
+/**
+ * Scope cho Marketplace Insights API (listing đã bán).
+ * Lưu ý: đây là Limited Release — app phải được eBay duyệt mới được cấp scope này,
+ * nếu chưa duyệt thì token request trả invalid_scope / API trả 403.
+ */
+const SCOPE_INSIGHTS = 'https://api.ebay.com/oauth/api_scope/buy.marketplace.insights'
+
+/**
+ * Lấy dữ liệu eBay: đã bán (sold) + đang bán (sale/active).
+ * Nếu chưa cấu hình OAuth thì trả về dữ liệu mock để hệ thống vẫn chạy.
+ */
+export default class EbayService {
+  static async getMarketData(product: Product): Promise<EbayData> {
+    const sku = product.sku?.trim()
+    const condition = this.normalizeCondition(product.condition)
+
+    if (!sku) {
+      return { sold: [], sale: [] }
+    }
+
+    const clientId = process.env.EBAY_CLIENT_ID
+    const clientSecret = process.env.EBAY_CLIENT_SECRET
+    const baseUrl = process.env.EBAY_BASE_URL || 'https://api.ebay.com'
+    const hasApiCreds = !!(clientId && clientSecret && baseUrl)
+
+    const conditionId = this.getConditionId(condition)
+    // Marketplace theo warehouse của product: US -> EBAY_US, còn lại -> EBAY_AU.
+    const marketplace = this.resolveMarketplace(product.warehouse)
+
+    // Hai nguồn độc lập: lỗi nguồn này không được làm mất nguồn kia.
+    // - sale (Browse API): cần API creds; thiếu creds thì bỏ qua (->[]).
+    // - sold: mặc định scrape (không cần creds) hoặc Insights API tùy EBAY_SOLD_SOURCE.
+    const [sale, sold] = await Promise.all([
+      hasApiCreds
+        ? this.tryFetch('sale', () =>
+            this.getAccessToken(clientId!, clientSecret!, baseUrl, SCOPE_BASE).then((token) =>
+              this.searchActiveListings(token, baseUrl, sku, conditionId, marketplace)
+            )
+          )
+        : Promise.resolve([] as Array<Record<string, any>>),
+      this.tryFetch('sold', () =>
+        this.getSoldListings(clientId, clientSecret, baseUrl, sku, conditionId, marketplace)
+      ),
+    ])
+
+    // Chỉ dùng mock khi KHÔNG có dữ liệu thật nào — giữ lại nguồn nào còn sống.
+    if (!sale.length && !sold.length) {
+      return this.buildMockData(sku, condition)
+    }
+    return { sale, sold }
+  }
+
+  /**
+   * Nguồn listing ĐÃ BÁN. Chọn theo env EBAY_SOLD_SOURCE:
+   *   - 'scrape' (mặc định): scrape bằng Puppeteer (không cần quyền Insights API).
+   *   - 'api': gọi Marketplace Insights API (cần Limited Release approval).
+   */
+  private static async getSoldListings(
+    clientId: string | undefined,
+    clientSecret: string | undefined,
+    baseUrl: string,
+    sku: string,
+    conditionId: string,
+    marketplace: string
+  ): Promise<Array<Record<string, any>>> {
+    const source = (process.env.EBAY_SOLD_SOURCE || 'scrape').toLowerCase()
+
+    if (source === 'api') {
+      if (!clientId || !clientSecret) throw new Error('Thiếu EBAY creds cho Insights API')
+      const token = await this.getAccessToken(clientId, clientSecret, baseUrl, SCOPE_INSIGHTS)
+      return this.searchSoldListings(token, baseUrl, sku, conditionId, marketplace)
+    }
+
+    const { default: EbayScraperService } = await import('#services/ebay_scraper_service')
+    return EbayScraperService.scrapeSold(sku, conditionId, marketplace)
+  }
+
+  /** Marketplace eBay theo warehouse: 'US' -> EBAY_US, mọi giá trị khác -> EBAY_AU. */
+  private static resolveMarketplace(warehouse?: string | null): string {
+    return (warehouse || '').trim().toUpperCase() === 'US' ? 'EBAY_US' : 'EBAY_AU'
+  }
+
+  /** Chạy 1 nguồn dữ liệu, nuốt lỗi và trả [] để không kéo sập nguồn còn lại. */
+  private static async tryFetch(
+    label: string,
+    fn: () => Promise<Array<Record<string, any>>>
+  ): Promise<Array<Record<string, any>>> {
+    try {
+      return await fn()
+    } catch (error) {
+      console.warn(`eBay ${label} fetch failed:`, (error as Error).message)
+      return []
+    }
+  }
+
+  private static async getAccessToken(
+    clientId: string,
+    clientSecret: string,
+    baseUrl: string,
+    scope: string = SCOPE_BASE
+  ): Promise<string> {
+    const credentials = Buffer.from(`${clientId}:${clientSecret}`).toString('base64')
+    const response = await fetch(`${baseUrl.replace(/\/$/, '')}/identity/v1/oauth2/token`, {
+      method: 'POST',
+      headers: {
+        Authorization: `Basic ${credentials}`,
+        'Content-Type': 'application/x-www-form-urlencoded',
+      },
+      body: `grant_type=client_credentials&scope=${encodeURIComponent(scope)}`,
+    })
+
+    if (!response.ok) {
+      // 400 invalid_scope -> app chưa được cấp scope (vd Insights Limited Release).
+      const detail = await response.text().catch(() => '')
+      throw new Error(`eBay OAuth lỗi: ${response.status} ${detail}`.trim())
+    }
+
+    const data = (await response.json()) as { access_token?: string }
+    if (!data.access_token) {
+      throw new Error('eBay OAuth không trả về access token')
+    }
+
+    return data.access_token
+  }
+
+  private static async searchActiveListings(
+    token: string,
+    baseUrl: string,
+    sku: string,
+    conditionId: string,
+    marketplace: string
+  ) {
+    const response = await fetch(
+      `${baseUrl.replace(/\/$/, '')}/buy/browse/v1/item_summary/search?q=${encodeURIComponent(sku)}&filter=conditionIds:{${conditionId}}&limit=100`,
+      {
+        headers: {
+          Authorization: `Bearer ${token}`,
+          'X-EBAY-C-MARKETPLACE-ID': marketplace,
+        },
+      }
+    )
+
+    if (!response.ok) {
+      throw new Error(`eBay Browse lỗi: ${response.status}`)
+    }
+
+    const data = (await response.json()) as { itemSummaries?: Array<Record<string, any>> }
+    const today = new Date().toISOString().slice(0, 10)
+
+    return (data.itemSummaries || [])
+      .map((item) => {
+        const price = Number(item?.price?.value ?? item?.sellingStatus?.currentPrice?.value ?? item?.price)
+        if (!Number.isFinite(price)) {
+          return null
+        }
+
+        return {
+          date: today,
+          price,
+          source: 'ebay',
+          title: item?.title || sku,
+          itemId: item?.itemId,
+        }
+      })
+      .filter(Boolean) as Array<Record<string, any>>
+  }
+
+  private static async searchSoldListings(
+    token: string,
+    baseUrl: string,
+    sku: string,
+    conditionId: string,
+    marketplace: string
+  ) {
+    const response = await fetch(
+      `${baseUrl.replace(/\/$/, '')}/buy/marketplace_insights/v1_beta/item_sales/search?q=${encodeURIComponent(sku)}&filter=conditionIds:{${conditionId}}&limit=50`,
+      {
+        headers: {
+          Authorization: `Bearer ${token}`,
+          'X-EBAY-C-MARKETPLACE-ID': marketplace,
+        },
+      }
+    )
+
+    if (!response.ok) {
+      throw new Error(`eBay Insights lỗi: ${response.status}`)
+    }
+    const data = (await response.json()) as { itemSales?: Array<Record<string, any>> }
+
+    return (data.itemSales || [])
+      .map((item) => {
+        const price = Number(item?.lastSoldPrice?.value ?? item?.price?.value ?? item?.price)
+        const date = typeof item?.lastSoldDate === 'string' ? item.lastSoldDate.slice(0, 10) : ''
+        if (!date || !Number.isFinite(price)) {
+          return null
+        }
+
+        return {
+          date,
+          price,
+          source: 'ebay',
+          title: item?.title || sku,
+          itemId: item?.itemId,
+        }
+      })
+      .filter(Boolean) as Array<Record<string, any>>
+  }
+
+  private static buildMockData(sku: string, condition: string): EbayData {
+    const basePrice = 80 + this.hashString(`${sku}:${condition}`) % 220
+    const today = new Date().toISOString().slice(0, 10)
+
+    const sale = Array.from({ length: 6 }, (_, index) => ({
+      date: today,
+      price: Number((basePrice * (1 + index * 0.03)).toFixed(2)),
+      source: 'ebay-mock',
+      title: sku,
+      condition,
+    }))
+
+    const sold = Array.from({ length: 5 }, (_, index) => ({
+      date: new Date(Date.now() - index * 86400000).toISOString().slice(0, 10),
+      price: Number((basePrice * 0.9 * (1 + index * 0.02)).toFixed(2)),
+      source: 'ebay-mock',
+      title: sku,
+      condition,
+    }))
+
+    return { sale, sold }
+  }
+
+  private static normalizeCondition(condition?: string): string {
+    const normalized = (condition || 'USED').toUpperCase().replace(/[^A-Z0-9]+/g, '_').replace(/^_+|_+$/g, '')
+    return normalized || 'USED'
+  }
+
+  private static getConditionId(condition: string): string {
+    if (condition.includes('OPEN')) return EBAY_CONDITION_ID.OPEN_BOX
+    if (condition.includes('REFURB')) return EBAY_CONDITION_ID.REFURBISHED
+    if (condition.includes('PART')) return EBAY_CONDITION_ID.FOR_PARTS
+    if (condition.includes('NEW') || condition.includes('NIB') || condition.includes('NOB')) return EBAY_CONDITION_ID.NEW
+    if (condition.includes('USE')) return EBAY_CONDITION_ID.USED
+
+    return EBAY_CONDITION_ID.USED
+  }
+
+  private static hashString(value: string): number {
+    let hash = 0
+    for (let index = 0; index < value.length; index += 1) {
+      hash = (hash * 31 + value.charCodeAt(index)) | 0
+    }
+    return Math.abs(hash)
+  }
+}
--- a/backend/app/services/erp_service.ts
+++ b/backend/app/services/erp_service.ts
@ -0,0 +1,155 @@
+import env from '#start/env'
+import logger from '@adonisjs/core/services/logger'
+import type Product from '#models/product'
+import type { SupplierPricePoint } from '#models/history'
+import axios from 'axios'
+
+interface ErpProductListParams {
+  limit?: number
+  skip?: number
+  order?: string
+  where?: {
+    sku?: string
+    warehouse?: string
+    condition?: string
+  }
+}
+
+export interface ErpProductItem {
+  sku: string
+  condition: string
+  qty: number
+  price: number
+  costs?: Array<{ currency: string; price: number }> | null
+  packageContain?: string | null
+  type?: string | null
+  erpId?: string | null
+  warehouse?: string | null
+}
+
+export interface ErpProductPage {
+  items: ErpProductItem[]
+  /** Tổng số bản ghi ở ERP (dùng để phân trang vòng lặp sync) */
+  total: number
+  skip: number
+  limit: number
+}
+
+/**
+ * Gọi ERP để lấy lịch sử giá supplier theo SKU/condition.
+ */
+export default class ErpService {
+  static async getSupplierPricing(product: Product): Promise<SupplierPricePoint[]> {
+    const url = env.get('ERP_API_URL')
+    if (!url) throw new Error('ERP_API_URL chưa cấu hình')
+
+    const body = {
+      urlAPI: '/api/wtbquote-result/get-result-list',
+      filter: {
+        limit: 50,
+        skip: 0,
+        order: 'updatedAt desc',
+        where: { _q: product.sku, condition: product.condition },
+      },
+    }
+
+    const resp = await axios.post(url + "/api/transferGetData", body, {
+      headers: {
+        Authorization: `Bearer ${env.get('ERP_API_KEY')}`,
+        'Content-Type': 'application/json',
+      },
+    })
+    if (!resp.data) throw new Error(`ERP API lỗi: ${resp.status}`)
+
+    const data: any = await resp.data
+    logger.debug({ count: data?.data?.length }, 'ERP supplier pricing fetched')
+
+    return (data?.data ?? []).map((r: any) => ({
+      price: Number(r.price),
+      date: r.createdAt,
+      source: 'erp',
+    }))
+  }
+
+  /**
+   * Gọi ERP để lấy danh sách sản phẩm tồn kho cho sync.
+   */
+  static async getProductsForSync(params: ErpProductListParams = {}): Promise<ErpProductPage> {
+    const url = env.get('ERP_API_URL')
+    if (!url) throw new Error('ERP_API_URL chưa cấu hình')
+    const limit = params.limit ?? 20
+    const skip = params.skip ?? 0
+    try {
+      const body = {
+        urlAPI: '/api/products/instock',
+        filter: {
+          limit,
+          skip,
+          order: params.order ?? '',
+          where: {
+            sku: params.where?.sku ?? '',
+            warehouse: params.where?.warehouse ?? '',
+            condition: params.where?.condition ?? '',
+          },
+        },
+      }
+
+      const resp = await axios.post(url + "/api/transferGetData", body, {
+        headers: {
+          Authorization: `Bearer ${env.get('ERP_API_KEY')}`,
+        },
+      })
+      if (!resp.data) throw new Error(`ERP API lỗi: ${resp.status}`)
+
+      const data: any = await resp.data
+      const raw = Array.isArray(data?.data) ? data.data : Array.isArray(data) ? data : []
+      const total = Number(data?.total ?? raw.length)
+
+      logger.debug({ count: raw.length, total, skip }, 'ERP products fetched for sync')
+
+      const items: ErpProductItem[] = raw.map((item: any) => {
+        const sku = String(item?.sku ?? item?.SKU ?? item?.productSku ?? item?.product?.sku ?? '').trim()
+        const condition = String(
+          item?.condition ?? item?.Condition ?? item?.conditionName ?? item?.productCondition ?? ''
+        ).trim()
+        const qty = Number(item?.qty ?? item?.quantity ?? item?.stock ?? item?.availableQty ?? item?.inStockQty ?? 0)
+        const price = Number(item?.price ?? item?.salePrice ?? item?.listPrice ?? item?.unitPrice ?? 0)
+        const costs = Array.isArray(item?.costs)
+          ? item.costs.map((entry: any) => ({
+            currency: String(entry?.currency ?? 'USD').trim(),
+            price: Number(entry?.price ?? 0),
+          }))
+          : item?.cost != null || item?.purchasePrice != null || item?.costPrice != null
+            ? [
+              {
+                currency: 'USD',
+                price: Number(item?.cost ?? item?.purchasePrice ?? item?.costPrice ?? 0),
+              },
+            ]
+            : null
+        const packageContain = item?.packageContain ?? item?.package_contain ?? item?.packageQty ?? null
+        const erpId = item?.productId ?? null
+        const warehouse = item?.warehouse ?? 'AU'
+
+        return {
+          sku,
+          condition,
+          qty: Number.isFinite(qty) ? qty : 0,
+          price: Number.isFinite(price) ? price : 0,
+          costs,
+          packageContain: packageContain == null ? null : String(packageContain),
+          type: 'ERP',
+          erpId: erpId ? String(erpId) : null,
+          warehouse,
+        }
+      })
+
+      return { items, total: Number.isFinite(total) ? total : items.length, skip, limit }
+    }
+    catch (error) {
+      logger.error({ err: error }, 'ERP getProductsForSync lỗi')
+      // throw error
+      return { items: [], total: 0, skip, limit }
+    }
+  }
+}
--- a/backend/app/services/history_service.ts
+++ b/backend/app/services/history_service.ts
@ -0,0 +1,32 @@
+import History from '#models/history'
+import type { SupplierPricePoint, EbayData } from '#models/history'
+
+interface RecordHistoryInput {
+  username: string
+  productId: number
+  dataSources: SupplierPricePoint[]
+  dataEbay: EbayData
+  aiResult?: Record<string, any> | null
+}
+
+/**
+ * Lưu snapshot dữ liệu mỗi lần lấy về để AI gợi ý giá.
+ */
+export default class HistoryService {
+  static async record(input: RecordHistoryInput): Promise<History> {
+    return History.create({
+      username: input.username,
+      productId: input.productId,
+      dataSources: input.dataSources,
+      dataEbay: input.dataEbay,
+      aiResult: input.aiResult ?? null,
+    })
+  }
+
+  static async listForProduct(productId: number, limit = 50) {
+    return History.query()
+      .where('product_id', productId)
+      .orderBy('time', 'desc')
+      .limit(limit)
+  }
+}
--- a/backend/app/services/import_service.ts
+++ b/backend/app/services/import_service.ts
@ -0,0 +1,100 @@
+import xlsx from 'xlsx'
+import ProductService from '#services/product_service'
+import LogService from '#services/log_service'
+
+export interface ImportRowResult {
+  row: number
+  sku?: string
+  status: 'created' | 'updated' | 'error'
+  message?: string
+}
+
+export interface ImportSummary {
+  total: number
+  created: number
+  updated: number
+  failed: number
+  rows: ImportRowResult[]
+}
+
+const VALID_HEADERS = ['sku', 'condition', 'qty', 'price']
+
+/**
+ * Import sản phẩm từ file Excel. Cột yêu cầu: sku, condition, qty, price.
+ */
+export default class ImportService {
+  static async importFromFile(filePath: string, username: string): Promise<ImportSummary> {
+    const wb = xlsx.readFile(filePath)
+    const sheet = wb.Sheets[wb.SheetNames[0]]
+    const rows = xlsx.utils.sheet_to_json<Record<string, any>>(sheet, { defval: null })
+    return this.processRows(rows, username)
+  }
+
+  static async importFromBuffer(buffer: Buffer, username: string): Promise<ImportSummary> {
+    const wb = xlsx.read(buffer, { type: 'buffer' })
+    const sheet = wb.Sheets[wb.SheetNames[0]]
+    const rows = xlsx.utils.sheet_to_json<Record<string, any>>(sheet, { defval: null })
+    return this.processRows(rows, username)
+  }
+
+  private static async processRows(
+    rows: Record<string, any>[],
+    username: string
+  ): Promise<ImportSummary> {
+    const summary: ImportSummary = { total: rows.length, created: 0, updated: 0, failed: 0, rows: [] }
+
+    for (let i = 0; i < rows.length; i++) {
+      const rowNo = i + 2 // +1 header, +1 1-based
+      const raw = this.normalizeKeys(rows[i])
+
+      const error = this.validateRow(raw)
+      if (error) {
+        summary.failed++
+        summary.rows.push({ row: rowNo, sku: raw.sku, status: 'error', message: error })
+        continue
+      }
+
+      try {
+        const { created } = await ProductService.upsert({
+          sku: String(raw.sku).trim(),
+          condition: String(raw.condition).trim(),
+          qty: Number(raw.qty),
+          price: Number(raw.price),
+        })
+        created ? summary.created++ : summary.updated++
+        summary.rows.push({ row: rowNo, sku: raw.sku, status: created ? 'created' : 'updated' })
+      } catch (e: any) {
+        summary.failed++
+        summary.rows.push({ row: rowNo, sku: raw.sku, status: 'error', message: e.message })
+      }
+    }
+
+    await LogService.record({
+      username,
+      actionName: 'Import Excel',
+      action: 'import',
+      meta: { total: summary.total, created: summary.created, updated: summary.updated, failed: summary.failed },
+    })
+
+    return summary
+  }
+
+  private static normalizeKeys(row: Record<string, any>): Record<string, any> {
+    const out: Record<string, any> = {}
+    for (const [k, v] of Object.entries(row)) {
+      out[String(k).trim().toLowerCase()] = v
+    }
+    return out
+  }
+
+  private static validateRow(raw: Record<string, any>): string | null {
+    for (const h of VALID_HEADERS) {
+      if (raw[h] === null || raw[h] === undefined || raw[h] === '') {
+        return `Thiếu cột "${h}"`
+      }
+    }
+    if (Number.isNaN(Number(raw.qty))) return 'qty không hợp lệ'
+    if (Number.isNaN(Number(raw.price))) return 'price không hợp lệ'
+    return null
+  }
+}
--- a/backend/app/services/log_service.ts
+++ b/backend/app/services/log_service.ts
@ -0,0 +1,40 @@
+import Log from '#models/log'
+
+export type LogAction = 'create' | 'update' | 'delete' | 'import' | 'sync' | 'suggest'
+
+interface RecordLogInput {
+  username: string
+  actionName: string
+  action: LogAction
+  productId?: number | null
+  meta?: Record<string, any> | null
+}
+
+/**
+ * Ghi nhật ký thao tác CUD của người dùng lên sản phẩm.
+ */
+export default class LogService {
+  static async record(input: RecordLogInput): Promise<Log> {
+    return Log.create({
+      username: input.username,
+      actionName: input.actionName,
+      action: input.action,
+      productId: input.productId ?? null,
+      meta: input.meta ?? null,
+    })
+  }
+
+  /** Ghi log hàng loạt (vd import nhiều dòng). */
+  static async recordMany(inputs: RecordLogInput[]): Promise<void> {
+    if (!inputs.length) return
+    await Log.createMany(
+      inputs.map((i) => ({
+        username: i.username,
+        actionName: i.actionName,
+        action: i.action,
+        productId: i.productId ?? null,
+        meta: i.meta ?? null,
+      }))
+    )
+  }
+}
--- a/backend/app/services/pricing_service.ts
+++ b/backend/app/services/pricing_service.ts
@ -0,0 +1,119 @@
+import env from '#start/env'
+import Product from '#models/product'
+import ErpService from '#services/erp_service'
+import EbayService from '#services/ebay_service'
+import AiService from '#services/ai_service'
+import type { Suggestion } from '#services/ai_service'
+import HistoryService from '#services/history_service'
+import LogService from '#services/log_service'
+
+export interface SuggestResult {
+  productId: number
+  suggestion: Suggestion
+  applied: boolean
+  oldPrice: number
+  newPrice: number
+  historyId: number
+}
+
+/**
+ * Orchestrator của service gợi ý giá — lõi của hệ thống.
+ *
+ * Luồng:
+ *   1. Lấy dữ liệu supplier (ERP) + eBay (sold/sale)
+ *   2. Lưu snapshot vào history
+ *   3. Gọi AI/rule engine -> suggestion
+ *   4. Lưu ai_price vào product
+ *   5. Hybrid áp giá: chênh lệch <= ngưỡng -> tự áp price; vượt -> chờ duyệt
+ */
+export default class PricingService {
+  /**
+   * Gợi ý giá cho 1 product (on-demand).
+   *
+   * @param forceApply  true = luôn áp giá AI vào `price` (bỏ qua ngưỡng hybrid).
+   *                    false (mặc định) = chỉ tự áp khi chênh lệch <= ngưỡng.
+   */
+  static async suggestForProduct(
+    productId: number,
+    username: string,
+    forceApply = false
+  ): Promise<SuggestResult> {
+    const product = await Product.findOrFail(productId)
+
+    const [dataSources, dataEbay] = await Promise.all([
+      ErpService.getSupplierPricing(product),
+      EbayService.getMarketData(product),
+    ])
+
+    const suggestion = await AiService.suggest({ product, dataSources, dataEbay })
+
+    const history = await HistoryService.record({
+      username,
+      productId: product.id,
+      dataSources,
+      dataEbay,
+      aiResult: suggestion,
+    })
+
+    const oldPrice = Number(product.price)
+    const thresholdPct = Number(env.get('PRICING_AUTO_APPLY_THRESHOLD_PCT', 5))
+    const diffPct = oldPrice > 0 ? (Math.abs(suggestion.suggestedPrice - oldPrice) / oldPrice) * 100 : 100
+
+    // luôn cập nhật ai_price (giá gợi ý gần nhất)
+    product.aiPrice = suggestion.suggestedPrice
+
+    // hybrid: chỉ tự áp khi trong ngưỡng; forceApply bỏ qua ngưỡng để luôn áp.
+    const applied = forceApply || diffPct <= thresholdPct
+    if (applied) {
+      product.price = suggestion.suggestedPrice
+    }
+    await product.save()
+
+    await LogService.record({
+      username,
+      actionName: applied
+        ? forceApply
+          ? 'Áp giá AI (force)'
+          : 'Tự áp giá AI'
+        : 'Gợi ý giá (chờ duyệt)',
+      action: 'suggest',
+      productId: product.id,
+      meta: { oldPrice, suggested: suggestion.suggestedPrice, diffPct: Math.round(diffPct * 100) / 100, applied },
+    })
+
+    return {
+      productId: product.id,
+      suggestion,
+      applied,
+      oldPrice,
+      newPrice: Number(product.price),
+      historyId: history.id,
+    }
+  }
+
+  /** Duyệt & áp giá AI gợi ý (cho trường hợp vượt ngưỡng). */
+  static async approve(productId: number, username: string, price?: number): Promise<Product> {
+    const product = await Product.findOrFail(productId)
+    const oldPrice = Number(product.price)
+    const newPrice = price ?? Number(product.aiPrice)
+    if (!newPrice) throw new Error('Chưa có giá AI để duyệt')
+
+    product.price = newPrice
+    await product.save()
+
+    await LogService.record({
+      username,
+      actionName: 'Duyệt & áp giá AI',
+      action: 'update',
+      productId: product.id,
+      meta: { oldPrice, newPrice },
+    })
+    return product
+  }
+
+  /** Lấy danh sách id product để chạy batch (mặc định toàn bộ). */
+  static async productIdsForBatch(): Promise<number[]> {
+    const rows = await Product.query().select('id')
+    return rows.map((r) => r.id)
+  }
+}
--- a/backend/app/services/product_service.ts
+++ b/backend/app/services/product_service.ts
@ -0,0 +1,137 @@
+import Product from '#models/product'
+import LogService from '#services/log_service'
+
+interface ListParams {
+  page?: number
+  perPage?: number
+  search?: string
+  condition?: string
+  type?: string
+  origin?: 'sync' | 'manual'
+}
+
+interface ProductData {
+  sku: string
+  condition: string
+  qty: number
+  price: number
+  costs?: Array<{ currency: string; price: number }> | null
+  aiPrice?: number | null
+  packageContain?: string | null
+  type?: string | null
+  erpId?: string | null
+  warehouse?: string | null
+}
+
+/**
+ * CRUD sản phẩm (manual + sync) + ghi log thao tác.
+ */
+export default class ProductService {
+  static async list(params: ListParams) {
+    const page = params.page ?? 1
+    const perPage = params.perPage ?? 25
+
+    const query = Product.query()
+
+    if (params.condition) query.where('condition', params.condition)
+    if (params.type) query.where('type', params.type)
+    if (params.search) {
+      // FULLTEXT khi có, fallback LIKE
+      query.where((b) => {
+        b.where('sku', 'like', `%${params.search}%`).orWhere('type', 'like', `%${params.search}%`)
+      })
+    }
+
+    return query.orderBy('updated_at', 'desc').paginate(page, perPage)
+  }
+
+  static async create(data: ProductData, username: string): Promise<Product> {
+    const product = await Product.create(data)
+    await LogService.record({
+      username,
+      actionName: 'Tạo sản phẩm',
+      action: 'create',
+      productId: product.id,
+      meta: { sku: product.sku, condition: product.condition },
+    })
+    return product
+  }
+
+  static async update(id: number, data: Partial<ProductData>, username: string): Promise<Product> {
+    const product = await Product.findOrFail(id)
+    const before = product.serialize()
+    product.merge(data)
+    await product.save()
+
+    await LogService.record({
+      username,
+      actionName: 'Cập nhật sản phẩm',
+      action: 'update',
+      productId: product.id,
+      meta: { before, after: product.serialize() },
+    })
+    return product
+  }
+
+  static async destroy(id: number, username: string): Promise<void> {
+    const product = await Product.findOrFail(id)
+    const snapshot = product.serialize()
+    await product.delete()
+
+    await LogService.record({
+      username,
+      actionName: 'Xóa sản phẩm',
+      action: 'delete',
+      productId: id,
+      meta: snapshot,
+    })
+  }
+
+  /**
+   * Upsert dùng cho import & sync (chạy hằng ngày).
+   *
+   * Định danh bản ghi theo ĐÚNG khóa unique của bảng: (sku, condition, warehouse).
+   * Tồn tại -> update (gồm cả cập nhật lại erp_id), không -> insert mới.
+   *
+   * LƯU Ý: KHÔNG tra cứu theo erp_id vì ERP có thể trả nhiều dòng cùng
+   * (sku, condition, warehouse) với erp_id khác nhau -> nếu match theo erp_id sẽ
+   * không tìm thấy và insert trùng -> lỗi Duplicate entry. Khóa tra cứu phải
+   * khớp khóa unique để upsert idempotent.
+   *
+   * Trả về { product, created }.
+   */
+  static async upsert(data: ProductData): Promise<{ product: Product; created: boolean }> {
+    const warehouse = data.warehouse ?? 'AU'
+
+    const findExisting = () =>
+      Product.query()
+        .where('sku', data.sku)
+        .where('condition', data.condition)
+        .where('warehouse', warehouse)
+        .first()
+
+    const existing = await findExisting()
+    if (existing) {
+      existing.merge({ ...data, warehouse })
+      await existing.save()
+      return { product: existing, created: false }
+    }
+
+    try {
+      const created = await Product.create({ ...data, warehouse })
+      return { product: created, created: true }
+    } catch (err: any) {
+      // Race: 1 worker khác vừa insert cùng (sku, condition, warehouse) giữa lúc
+      // ta SELECT và INSERT -> tìm lại rồi update thay vì để lỗi.
+      if (err?.code === 'ER_DUP_ENTRY') {
+        const raced = await findExisting()
+        if (raced) {
+          raced.merge({ ...data, warehouse })
+          await raced.save()
+          return { product: raced, created: false }
+        }
+      }
+      throw err
+    }
+  }
+}
--- a/backend/app/services/queue_service.ts
+++ b/backend/app/services/queue_service.ts
@ -0,0 +1,136 @@
+import { Queue } from 'bullmq'
+import env from '#start/env'
+import type { ErpProductItem } from '#services/erp_service'
+
+export const redisConnection = {
+  host: env.get('REDIS_HOST', '127.0.0.1'),
+  port: Number(env.get('REDIS_PORT', 6379)),
+  password: env.get('REDIS_PASSWORD') || undefined,
+}
+
+export const QUEUE_NAMES = {
+  pricing: 'pricing',
+  sync: 'sync',
+  product: 'product',
+  import: 'import',
+} as const
+
+export const JOB_NAMES = {
+  /** Job orchestrator: quét ERP rồi fan-out các job upsert. */
+  erpSync: 'erp',
+  /** Job upsert 1 sản phẩm (BullMQ tự retry khi lỗi). */
+  upsertProduct: 'upsert',
+} as const
+
+const defaultJobOptions = {
+  attempts: 3,
+  backoff: { type: 'exponential' as const, delay: 5000 },
+  removeOnComplete: 1000,
+  removeOnFail: 5000,
+}
+
+/*
+| Lazy singletons — chỉ mở kết nối Redis khi thực sự enqueue, tránh việc
+| import module (vd ace liệt kê command) lại tự mở kết nối và treo process.
+*/
+let _pricingQueue: Queue | undefined
+let _syncQueue: Queue | undefined
+let _productQueue: Queue | undefined
+let _importQueue: Queue | undefined
+
+export function pricingQueue(): Queue {
+  if (!_pricingQueue) {
+    _pricingQueue = new Queue(QUEUE_NAMES.pricing, { connection: redisConnection, defaultJobOptions })
+  }
+  return _pricingQueue
+}
+
+export function syncQueue(): Queue {
+  if (!_syncQueue) {
+    _syncQueue = new Queue(QUEUE_NAMES.sync, { connection: redisConnection, defaultJobOptions })
+  }
+  return _syncQueue
+}
+
+export function productQueue(): Queue {
+  if (!_productQueue) {
+    _productQueue = new Queue(QUEUE_NAMES.product, { connection: redisConnection, defaultJobOptions })
+  }
+  return _productQueue
+}
+
+export function importQueue(): Queue {
+  if (!_importQueue) {
+    _importQueue = new Queue(QUEUE_NAMES.import, { connection: redisConnection, defaultJobOptions })
+  }
+  return _importQueue
+}
+
+/**
+ * Đóng tất cả kết nối Redis của các queue đã mở.
+ * Dùng cho command chạy 1 lần để tiến trình thoát sạch.
+ */
+export async function closeQueues(): Promise<void> {
+  await Promise.all([
+    _pricingQueue?.close(),
+    _syncQueue?.close(),
+    _productQueue?.close(),
+    _importQueue?.close(),
+  ])
+  _pricingQueue = _syncQueue = _productQueue = _importQueue = undefined
+}
+
+/** Đẩy job gợi ý giá cho 1 product. */
+export async function enqueuePricingSuggest(productId: number, username: string) {
+  return pricingQueue().add('suggest', { productId, username })
+}
+
+/** Đẩy nhiều job gợi ý giá (batch). */
+export async function enqueuePricingBatch(productIds: number[], username: string) {
+  return pricingQueue().addBulk(
+    productIds.map((productId) => ({ name: 'suggest', data: { productId, username } }))
+  )
+}
+
+/** Đẩy job orchestrator đồng bộ ERP (job này sẽ tự fan-out các job upsert). */
+export async function enqueueSync(username: string) {
+  return syncQueue().add(JOB_NAMES.erpSync, { username })
+}
+
+/** ID cố định cho scheduler sync hằng ngày (idempotent). */
+export const SYNC_SCHEDULER_ID = 'daily-erp-sync'
+
+/**
+ * Tạo/cập nhật job scheduler chạy sync ERP định kỳ (cron).
+ * Idempotent: gọi lại nhiều lần chỉ cập nhật lịch, không nhân đôi.
+ */
+export async function upsertSyncScheduler(
+  pattern: string,
+  tz: string | undefined,
+  username = 'cron'
+) {
+  return syncQueue().upsertJobScheduler(
+    SYNC_SCHEDULER_ID,
+    { pattern, ...(tz ? { tz } : {}) },
+    { name: JOB_NAMES.erpSync, data: { username } }
+  )
+}
+
+/** Gỡ scheduler sync định kỳ. */
+export async function removeSyncScheduler() {
+  return syncQueue().removeJobScheduler(SYNC_SCHEDULER_ID)
+}
+
+/**
+ * Đẩy batch job upsert sản phẩm — mỗi sản phẩm 1 job.
+ * BullMQ tự retry job lỗi theo `defaultJobOptions` (attempts + backoff),
+ * nên các sản phẩm lỗi sẽ được sync lại tự động sau cùng.
+ */
+export async function enqueueProductUpserts(items: ErpProductItem[], username: string) {
+  return productQueue().addBulk(
+    items.map((item) => ({
+      name: JOB_NAMES.upsertProduct,
+      data: { item, username },
+    }))
+  )
+}
--- a/backend/app/services/sync_service.ts
+++ b/backend/app/services/sync_service.ts
@ -0,0 +1,119 @@
+import logger from '@adonisjs/core/services/logger'
+import ProductService from '#services/product_service'
+import LogService from '#services/log_service'
+import ErpService, { type ErpProductItem } from '#services/erp_service'
+import { enqueueProductUpserts } from '#services/queue_service'
+
+export interface SyncSummary {
+  /** Tổng số bản ghi ERP tự báo cáo (field `total`) — CHỈ tham khảo, không tin cậy. */
+  total: number
+  /** Số item fetch về từ ERP. */
+  fetched: number
+  /** Số item hợp lệ đã đẩy lên queue. */
+  enqueued: number
+  /** Số item bị bỏ qua (sku rỗng / rác). */
+  skipped: number
+  /** Số lần gọi ERP (số page). */
+  pages: number
+  startedAt: string
+  finishedAt?: string
+}
+
+interface SyncOptions {
+  /** Bước phân trang (giá trị `skip` tăng mỗi lần). Mặc định 100. */
+  pageSize?: number
+  /** Trần số trang để chặn lặp vô hạn nếu ERP không bao giờ trả rỗng. Mặc định 1000. */
+  maxPages?: number
+}
+
+/**
+ * Service đồng bộ sản phẩm từ ERP qua BullMQ.
+ *
+ * Luồng:
+ *   1. `syncFromErp` (chạy trong job `erp`) — orchestrator: quét toàn bộ ERP
+ *      theo phân trang và fan-out mỗi sản phẩm thành 1 job `upsert`.
+ *   2. Worker xử lý job `upsert` gọi `upsertProduct`. Nếu lỗi, BullMQ tự retry
+ *      theo `attempts` + exponential backoff -> sản phẩm lỗi được sync lại sau
+ *      cùng (sau backoff), không cần hàng đợi retry thủ công.
+ *
+ * LƯU Ý PHÂN TRANG (ERP /api/products/instock):
+ *   - ERP BỎ QUA `limit` (trả số item/trang tùy ý, vd 195/309), và `total` báo
+ *     về KHÔNG khớp số bản ghi thật -> KHÔNG dùng `total` làm điều kiện dừng.
+ *   - `skip` hoạt động như cursor bước `pageSize`: skip=0 và skip=100 cho 2 block
+ *     RỜI NHAU. Vì vậy tăng `skip += pageSize` và lặp tới khi trang trả về RỖNG.
+ */
+export default class SyncService {
+  static async syncFromErp(username = 'system', options: SyncOptions = {}): Promise<SyncSummary> {
+    const pageSize = options.pageSize ?? 100
+    const maxPages = options.maxPages ?? 1000
+
+    const summary: SyncSummary = {
+      total: 0,
+      fetched: 0,
+      enqueued: 0,
+      skipped: 0,
+      pages: 0,
+      startedAt: new Date().toISOString(),
+    }
+
+    let skip = 0
+
+    while (summary.pages < maxPages) {
+      const page = await ErpService.getProductsForSync({
+        limit: pageSize,
+        skip,
+        order: '',
+        where: { sku: '', warehouse: '', condition: '' },
+      })
+
+      summary.pages++
+      if (Number.isFinite(page.total)) summary.total = page.total
+
+      // Điều kiện dừng TIN CẬY: ERP hết dữ liệu (trả trang rỗng).
+      if (page.items.length === 0) break
+
+      summary.fetched += page.items.length
+
+      // Bỏ qua item rác không có sku (sku rỗng gây trùng unique key -> lỗi insert).
+      const valid = page.items.filter((i) => i.sku && i.sku.trim() !== '')
+      summary.skipped += page.items.length - valid.length
+
+      if (valid.length > 0) {
+        // Fan-out: mỗi sản phẩm 1 job upsert. BullMQ lo retry khi lỗi.
+        await enqueueProductUpserts(valid, username)
+        summary.enqueued += valid.length
+      }
+
+      logger.info(
+        { skip, fetched: page.items.length, valid: valid.length, reportedTotal: page.total },
+        'ERP page đã enqueue'
+      )
+      skip += pageSize
+    }
+
+    if (summary.pages >= maxPages) {
+      logger.warn({ maxPages }, 'Sync ERP chạm trần maxPages — có thể chưa quét hết, kiểm tra lại')
+    }
+
+    summary.finishedAt = new Date().toISOString()
+
+    await LogService.record({
+      username,
+      actionName: 'Đồng bộ ERP',
+      action: 'sync',
+      meta: summary,
+    })
+
+    logger.info(summary, 'Sync ERP: đã enqueue toàn bộ sản phẩm')
+    return summary
+  }
+
+  /**
+   * Xử lý 1 job upsert (gọi bởi worker).
+   * Cố tình ném lỗi khi thất bại để BullMQ tự retry job.
+   */
+  static async upsertProduct(item: ErpProductItem): Promise<{ sku: string; condition: string; created: boolean }> {
+    const { created } = await ProductService.upsert(item)
+    return { sku: item.sku, condition: item.condition, created }
+  }
+}
--- a/backend/app/validators/auth.ts
+++ b/backend/app/validators/auth.ts
@ -0,0 +1,15 @@
+import vine from '@vinejs/vine'
+
+export const registerValidator = vine.compile(
+  vine.object({
+    username: vine.string().trim().minLength(3).maxLength(100),
+    password: vine.string().minLength(6).maxLength(180),
+  })
+)
+
+export const loginValidator = vine.compile(
+  vine.object({
+    username: vine.string().trim(),
+    password: vine.string(),
+  })
+)
--- a/backend/app/validators/product.ts
+++ b/backend/app/validators/product.ts
@ -0,0 +1,52 @@
+import vine from '@vinejs/vine'
+
+const base = {
+  sku: vine.string().trim().maxLength(191),
+  condition: vine.string().trim().maxLength(50),
+  qty: vine.number().min(0),
+  price: vine.number().min(0),
+  costs: vine.array(
+    vine.object({
+      currency: vine.string().trim().maxLength(10),
+      price: vine.number().min(0),
+    })
+  ).optional().nullable(),
+  aiPrice: vine.number().min(0).optional().nullable(),
+  packageContain: vine.string().trim().maxLength(100).optional().nullable(),
+  type: vine.string().trim().maxLength(100).optional().nullable(),
+  erpId: vine.string().trim().maxLength(191).optional().nullable(),
+}
+
+export const createProductValidator = vine.compile(vine.object(base))
+
+export const updateProductValidator = vine.compile(
+  vine.object({
+    sku: vine.string().trim().maxLength(191).optional(),
+    condition: vine.string().trim().maxLength(50).optional(),
+    qty: vine.number().min(0).optional(),
+    price: vine.number().min(0).optional(),
+    costs: vine.array(
+      vine.object({
+        currency: vine.string().trim().maxLength(10),
+        price: vine.number().min(0),
+      })
+    ).optional().nullable(),
+    aiPrice: vine.number().min(0).optional().nullable(),
+    packageContain: vine.string().trim().maxLength(100).optional().nullable(),
+    type: vine.string().trim().maxLength(100).optional().nullable(),
+    erpId: vine.string().trim().maxLength(191).optional().nullable(),
+  })
+)
+
+export const listProductValidator = vine.compile(
+  vine.object({
+    page: vine.number().min(1).optional(),
+    perPage: vine.number().min(1).max(200).optional(),
+    sku: vine.string().trim(),
+    condition: vine.string().trim(),
+    warehouse: vine.string().trim().optional(),
+    type: vine.string().trim().optional(),
+    order: vine.string().trim().optional(),
+    direction: vine.string().trim().optional(),
+  })
+)
--- a/backend/bin/console.ts
+++ b/backend/bin/console.ts
@ -0,0 +1,31 @@
+/*
+|--------------------------------------------------------------------------
+| Ace console entrypoint
+|--------------------------------------------------------------------------
+*/
+import 'reflect-metadata'
+import { Ignitor, prettyPrintError } from '@adonisjs/core'
+
+const APP_ROOT = new URL('../', import.meta.url)
+
+const IMPORTER = (filePath: string) => {
+  if (filePath.startsWith('./') || filePath.startsWith('../')) {
+    return import(new URL(filePath, APP_ROOT).href)
+  }
+  return import(filePath)
+}
+
+new Ignitor(APP_ROOT, { importer: IMPORTER })
+  .tap((app) => {
+    app.booting(async () => {
+      await import('#start/env')
+    })
+    app.listen('SIGTERM', () => app.terminate())
+    app.listenIf(app.managedByPm2, 'SIGINT', () => app.terminate())
+  })
+  .ace()
+  .handle(process.argv.splice(2))
+  .catch((error) => {
+    process.exitCode = 1
+    prettyPrintError(error)
+  })
--- a/backend/bin/server.ts
+++ b/backend/bin/server.ts
@ -0,0 +1,34 @@
+/*
+|--------------------------------------------------------------------------
+| HTTP server entrypoint
+|--------------------------------------------------------------------------
+|
+| Boots the AdonisJS application and starts the HTTP server.
+|
+*/
+import 'reflect-metadata'
+import { Ignitor, prettyPrintError } from '@adonisjs/core'
+
+const APP_ROOT = new URL('../', import.meta.url)
+
+const IMPORTER = (filePath: string) => {
+  if (filePath.startsWith('./') || filePath.startsWith('../')) {
+    return import(new URL(filePath, APP_ROOT).href)
+  }
+  return import(filePath)
+}
+
+new Ignitor(APP_ROOT, { importer: IMPORTER })
+  .tap((app) => {
+    app.booting(async () => {
+      await import('#start/env')
+    })
+    app.listen('SIGTERM', () => app.terminate())
+    app.listenIf(app.managedByPm2, 'SIGINT', () => app.terminate())
+  })
+  .httpServer()
+  .start()
+  .catch((error) => {
+    process.exitCode = 1
+    prettyPrintError(error)
+  })
--- a/backend/commands/ai_suggest.ts
+++ b/backend/commands/ai_suggest.ts
@ -0,0 +1,150 @@
+import { BaseCommand, args, flags } from '@adonisjs/core/ace'
+import type { CommandOptions } from '@adonisjs/core/types/ace'
+
+/**
+ * Chạy AI gợi ý giá cho sản phẩm và cập nhật `ai_price` (luôn) + `price`.
+ *
+ * Khác với queue (`node ace queue:work`), command này chạy ĐỒNG BỘ ngay trong
+ * tiến trình và in kết quả ra màn hình — tiện để chạy thủ công / cron đơn giản.
+ *
+ *   node ace ai:suggest 12                  # 1 sản phẩm theo id
+ *   node ace ai:suggest                     # toàn bộ sản phẩm
+ *   node ace ai:suggest --sku ABC123        # lọc theo SKU
+ *   node ace ai:suggest --warehouse AU --condition New --limit 50
+ *   node ace ai:suggest --only-missing      # chỉ sản phẩm chưa có ai_price
+ *   node ace ai:suggest --force             # luôn ghi đè `price` bằng giá AI
+ *   node ace ai:suggest --dry-run           # chỉ xem, không lưu DB
+ *
+ * Mặc định (không --force): áp dụng hybrid — chỉ tự ghi `price` khi chênh lệch
+ * so với giá hiện tại <= PRICING_AUTO_APPLY_THRESHOLD_PCT, ngược lại chỉ lưu
+ * `ai_price` để chờ duyệt. `ai_price` LUÔN được cập nhật.
+ */
+export default class AiSuggest extends BaseCommand {
+  static commandName = 'ai:suggest'
+  static description = 'Chạy AI gợi ý giá & cập nhật price/ai_price cho sản phẩm'
+  static options: CommandOptions = { startApp: true }
+
+  @args.string({ description: 'ID sản phẩm cần gợi ý (bỏ trống = theo bộ lọc/toàn bộ)', required: false })
+  declare productId?: string
+
+  @flags.string({ description: 'Lọc theo SKU' })
+  declare sku?: string
+
+  @flags.string({ description: 'Lọc theo warehouse' })
+  declare warehouse?: string
+
+  @flags.string({ description: 'Lọc theo condition' })
+  declare condition?: string
+
+  @flags.number({ description: 'Giới hạn số sản phẩm xử lý' })
+  declare limit?: number
+
+  @flags.boolean({ description: 'Chỉ xử lý sản phẩm chưa có ai_price' })
+  declare onlyMissing: boolean
+
+  @flags.boolean({ description: 'Luôn ghi đè `price` bằng giá AI (bỏ qua ngưỡng hybrid)' })
+  declare force: boolean
+
+  @flags.boolean({ description: 'Chạy thử: gọi AI nhưng KHÔNG lưu DB' })
+  declare dryRun: boolean
+
+  @flags.string({ description: 'Tên người thực hiện (ghi vào log/history)', default: 'cli' })
+  declare username: string
+
+  async run() {
+    const { default: Product } = await import('#models/product')
+    const { default: PricingService } = await import('#services/pricing_service')
+    const { default: AiService } = await import('#services/ai_service')
+    const { default: ErpService } = await import('#services/erp_service')
+    const { default: EbayService } = await import('#services/ebay_service')
+    const { default: EbayScraperService } = await import('#services/ebay_scraper_service')
+
+    try {
+      // 1. Thu thập danh sách id sản phẩm cần xử lý
+      let ids: number[]
+    if (this.productId) {
+      ids = [Number(this.productId)]
+    } else {
+      const query = Product.query().select('id')
+      if (this.sku) query.where('sku', this.sku)
+      if (this.warehouse) query.where('warehouse', this.warehouse)
+      if (this.condition) query.where('condition', this.condition)
+      if (this.onlyMissing) query.whereNull('ai_price')
+      if (this.limit) query.limit(this.limit)
+      ids = (await query).map((p: any) => p.id)
+    }
+
+    if (!ids.length) {
+      this.logger.warning('Không có sản phẩm nào khớp bộ lọc.')
+      return
+    }
+
+    this.logger.info(
+      `Xử lý ${ids.length} sản phẩm` +
+        (this.force ? ' (force áp giá)' : '') +
+        (this.dryRun ? ' (dry-run, không lưu)' : '')
+    )
+
+    const rows: string[][] = []
+    let ok = 0
+    let fail = 0
+
+    for (const id of ids) {
+      try {
+        if (this.dryRun) {
+          // Dry-run: chạy y hệt luồng AI nhưng không ghi DB.
+          const product = await Product.findOrFail(id)
+          const [dataSources, dataEbay] = await Promise.all([
+            ErpService.getSupplierPricing(product),
+            EbayService.getMarketData(product),
+          ])
+          const suggestion = await AiService.suggest({ product, dataSources, dataEbay })
+          rows.push([
+            String(id),
+            product.sku,
+            `$${Number(product.price)}`,
+            `$${suggestion.suggestedPrice}`,
+            '—',
+            suggestion.engine,
+          ])
+        } else {
+          const result = await PricingService.suggestForProduct(id, this.username, this.force)
+          rows.push([
+            String(id),
+            '', // SKU điền sau (suggestForProduct không trả sku)
+            `$${result.oldPrice}`,
+            `$${result.suggestion.suggestedPrice}`,
+            result.applied ? `áp -> $${result.newPrice}` : 'chờ duyệt',
+            result.suggestion.engine,
+          ])
+        }
+        ok++
+      } catch (error) {
+        fail++
+        rows.push([String(id), '—', '—', '—', `LỖI: ${(error as Error).message}`, '—'])
+      }
+    }
+
+    // SKU cho nhánh non-dry-run (suggestForProduct không trả sku) — nạp 1 lần.
+    const skuMap = new Map<number, string>()
+    if (!this.dryRun) {
+      const prods = await Product.query().whereIn('id', ids).select('id', 'sku')
+      prods.forEach((p: any) => skuMap.set(p.id, p.sku))
+      for (const r of rows) {
+        const idNum = Number(r[0])
+        if (skuMap.has(idNum)) r[1] = skuMap.get(idNum)!
+      }
+    }
+
+    const table = this.ui.table()
+    table.head(['ID', 'SKU', 'Giá cũ', 'Giá AI', 'Kết quả', 'Engine'])
+    rows.forEach((r) => table.row(r))
+    table.render()
+
+    this.logger.success(`Hoàn tất: ${ok} thành công, ${fail} lỗi.`)
+    } finally {
+      // Đóng Chromium dùng chung của scraper để tiến trình thoát sạch.
+      await EbayScraperService.close()
+    }
+  }
+}
--- a/backend/commands/make_user.ts
+++ b/backend/commands/make_user.ts
@ -0,0 +1,24 @@
+import { BaseCommand, args } from '@adonisjs/core/ace'
+import type { CommandOptions } from '@adonisjs/core/types/ace'
+
+/**
+ * Tạo nhanh user đăng nhập.
+ * Chạy: `node ace make:user admin secret123`
+ */
+export default class MakeUser extends BaseCommand {
+  static commandName = 'make:user'
+  static description = 'Tạo user mới (username, password)'
+  static options: CommandOptions = { startApp: true }
+
+  @args.string({ description: 'Username' })
+  declare username: string
+
+  @args.string({ description: 'Password' })
+  declare password: string
+
+  async run() {
+    const { default: User } = await import('#models/user')
+    const user = await User.create({ username: this.username, password: this.password })
+    this.logger.success(`Đã tạo user #${user.id} (${user.username})`)
+  }
+}
--- a/backend/commands/queue_work.ts
+++ b/backend/commands/queue_work.ts
@ -0,0 +1,86 @@
+import { BaseCommand } from '@adonisjs/core/ace'
+import type { CommandOptions } from '@adonisjs/core/types/ace'
+import app from '@adonisjs/core/services/app'
+import { Worker } from 'bullmq'
+import { QUEUE_NAMES, JOB_NAMES, redisConnection, upsertSyncScheduler } from '#services/queue_service'
+import env from '#start/env'
+import PricingService from '#services/pricing_service'
+import SyncService from '#services/sync_service'
+
+/**
+ * Worker xử lý job nền (pricing batch, sync ERP).
+ * Chạy: `node ace queue:work`  (process riêng với HTTP server).
+ */
+export default class QueueWork extends BaseCommand {
+  static commandName = 'queue:work'
+  static description = 'Khởi động worker xử lý queue (pricing, sync, import)'
+  static options: CommandOptions = { startApp: true, staysAlive: true }
+
+  async run() {
+    const concurrency = 5
+    this.logger.info('Queue worker đang chạy...')
+
+    // Đăng ký cron sync ERP hằng ngày (idempotent) — luôn active khi worker chạy.
+    const cronPattern = env.get('SYNC_CRON', '0 2 * * *')
+    const cronTz = env.get('SYNC_TZ', 'Australia/Sydney')
+    await upsertSyncScheduler(cronPattern, cronTz, 'cron')
+    this.logger.info(`Cron sync ERP: "${cronPattern}" (tz: ${cronTz})`)
+
+    const pricingWorker = new Worker(
+      QUEUE_NAMES.pricing,
+      async (job) => {
+        if (job.name === 'suggest') {
+          const { productId, username } = job.data
+          return PricingService.suggestForProduct(productId, username)
+        }
+      },
+      { connection: redisConnection, concurrency }
+    )
+
+    // Orchestrator: quét ERP rồi fan-out job upsert. Để concurrency 1 (1 lần sync).
+    const syncWorker = new Worker(
+      QUEUE_NAMES.sync,
+      async (job) => {
+        if (job.name === JOB_NAMES.erpSync) {
+          return SyncService.syncFromErp(job.data?.username)
+        }
+      },
+      { connection: redisConnection, concurrency: 1 }
+    )
+
+    // Worker upsert từng sản phẩm — chạy song song để xử lý nhanh khối lượng lớn.
+    // Job lỗi sẽ được BullMQ tự retry (attempts + backoff) -> sync lại sau cùng.
+    const productWorker = new Worker(
+      QUEUE_NAMES.product,
+      async (job) => {
+        if (job.name === JOB_NAMES.upsertProduct) {
+          return SyncService.upsertProduct(job.data?.item)
+        }
+      },
+      { connection: redisConnection, concurrency: 10 }
+    )
+
+    for (const [name, w] of [
+      ['pricing', pricingWorker],
+      ['sync', syncWorker],
+      ['product', productWorker],
+    ] as const) {
+      w.on('completed', (job) => this.logger.info(`[${name}] job ${job.id} done`))
+      w.on('failed', (job, err) => this.logger.error(`[${name}] job ${job?.id} failed: ${err.message}`))
+    }
+
+    // Giữ process sống cho tới khi nhận tín hiệu tắt
+    await new Promise<void>((resolve) => {
+      app.terminating(async () => {
+        const { default: EbayScraperService } = await import('#services/ebay_scraper_service')
+        await Promise.all([
+          pricingWorker.close(),
+          syncWorker.close(),
+          productWorker.close(),
+          EbayScraperService.close(),
+        ])
+        resolve()
+      })
+    })
+  }
+}
--- a/backend/commands/sync_erp.ts
+++ b/backend/commands/sync_erp.ts
@ -0,0 +1,61 @@
+import { BaseCommand, flags } from '@adonisjs/core/ace'
+import type { CommandOptions } from '@adonisjs/core/types/ace'
+import env from '#start/env'
+
+/**
+ * Trigger đồng bộ sản phẩm từ ERP qua queue.
+ *
+ *   node ace sync:erp                 # đẩy 1 job sync NGAY (worker xử lý)
+ *   node ace sync:erp --schedule      # tạo/cập nhật cron sync hằng ngày
+ *   node ace sync:erp --unschedule    # gỡ cron
+ *   node ace sync:erp --schedule --pattern "0 3 * * *" --tz "Australia/Sydney"
+ *
+ * Lưu ý: việc upsert thực tế do worker `node ace queue:work` đảm nhận,
+ * command này chỉ đưa job vào hàng đợi.
+ */
+export default class SyncErp extends BaseCommand {
+  static commandName = 'sync:erp'
+  static description = 'Đồng bộ ERP: đẩy job sync ngay, hoặc tạo/gỡ cron hằng ngày'
+  static options: CommandOptions = { startApp: true }
+
+  @flags.boolean({ description: 'Tạo/cập nhật cron sync hằng ngày thay vì chạy ngay' })
+  declare schedule: boolean
+
+  @flags.boolean({ description: 'Gỡ cron sync hằng ngày' })
+  declare unschedule: boolean
+
+  @flags.string({ description: 'Cron pattern (mặc định lấy từ SYNC_CRON hoặc "0 2 * * *")' })
+  declare pattern: string
+
+  @flags.string({ description: 'Timezone cho cron (mặc định SYNC_TZ hoặc "Australia/Sydney")' })
+  declare tz: string
+
+  async run() {
+    const { upsertSyncScheduler, removeSyncScheduler, enqueueSync, closeQueues } = await import(
+      '#services/queue_service'
+    )
+
+    try {
+      if (this.unschedule) {
+        await removeSyncScheduler()
+        this.logger.success('Đã gỡ cron sync ERP hằng ngày')
+        return
+      }
+
+      if (this.schedule) {
+        const pattern = this.pattern ?? env.get('SYNC_CRON', '0 2 * * *')
+        const tz = this.tz ?? env.get('SYNC_TZ', 'Australia/Sydney')
+        await upsertSyncScheduler(pattern, tz, 'cron')
+        this.logger.success(`Đã đặt cron sync ERP: "${pattern}" (tz: ${tz})`)
+        return
+      }
+
+      // Mặc định: đẩy 1 job sync ngay.
+      const job = await enqueueSync('cli')
+      this.logger.success(`Đã đẩy job sync ERP #${job.id} vào queue. Worker sẽ xử lý.`)
+    } finally {
+      // Đóng kết nối Redis để command thoát sạch.
+      await closeQueues()
+    }
+  }
+}
--- a/backend/config/app.ts
+++ b/backend/config/app.ts
@ -0,0 +1,20 @@
+import env from '#start/env'
+import app from '@adonisjs/core/services/app'
+import { Secret } from '@adonisjs/core/helpers'
+import { defineConfig } from '@adonisjs/core/http'
+
+export const appKey = new Secret(env.get('APP_KEY'))
+
+export const http = defineConfig({
+  generateRequestId: true,
+  allowMethodSpoofing: false,
+  useAsyncLocalStorage: false,
+  cookie: {
+    domain: '',
+    path: '/',
+    maxAge: '2h',
+    httpOnly: true,
+    secure: app.inProduction,
+    sameSite: 'lax',
+  },
+})
--- a/backend/config/auth.ts
+++ b/backend/config/auth.ts
@ -0,0 +1,24 @@
+import { defineConfig } from '@adonisjs/auth'
+import { tokensGuard, tokensUserProvider } from '@adonisjs/auth/access_tokens'
+import type { InferAuthEvents, Authenticators } from '@adonisjs/auth/types'
+
+const authConfig = defineConfig({
+  default: 'api',
+  guards: {
+    api: tokensGuard({
+      provider: tokensUserProvider({
+        tokens: 'accessTokens',
+        model: () => import('#models/user'),
+      }),
+    }),
+  },
+})
+
+export default authConfig
+
+declare module '@adonisjs/auth/types' {
+  export interface Authenticators extends InferAuthenticators<typeof authConfig> {}
+}
+declare module '@adonisjs/core/types' {
+  interface EventsList extends InferAuthEvents<Authenticators> {}
+}
--- a/backend/config/bodyparser.ts
+++ b/backend/config/bodyparser.ts
@ -0,0 +1,30 @@
+import { defineConfig } from '@adonisjs/core/bodyparser'
+
+const bodyParserConfig = defineConfig({
+  allowedMethods: ['POST', 'PUT', 'PATCH', 'DELETE'],
+
+  form: {
+    convertEmptyStringsToNull: true,
+    types: ['application/x-www-form-urlencoded'],
+  },
+
+  json: {
+    convertEmptyStringsToNull: true,
+    types: [
+      'application/json',
+      'application/json-patch+json',
+      'application/vnd.api+json',
+      'application/csp-report',
+    ],
+  },
+
+  multipart: {
+    autoProcess: true,
+    convertEmptyStringsToNull: true,
+    processManually: [],
+    limit: '20mb',
+    types: ['multipart/form-data'],
+  },
+})
+
+export default bodyParserConfig
--- a/backend/config/cors.ts
+++ b/backend/config/cors.ts
@ -0,0 +1,13 @@
+import { defineConfig } from '@adonisjs/cors'
+
+const corsConfig = defineConfig({
+  enabled: true,
+  origin: true,
+  methods: ['GET', 'HEAD', 'POST', 'PUT', 'PATCH', 'DELETE'],
+  headers: true,
+  exposeHeaders: [],
+  credentials: true,
+  maxAge: 90,
+})
+
+export default corsConfig
--- a/backend/config/database.ts
+++ b/backend/config/database.ts
@ -0,0 +1,35 @@
+import env from '#start/env'
+import { defineConfig } from '@adonisjs/lucid'
+
+const dbConfig = defineConfig({
+  connection: 'mysql',
+  connections: {
+    mysql: {
+      client: 'mysql2',
+      connection: {
+        host: env.get('DB_HOST'),
+        port: env.get('DB_PORT'),
+        user: env.get('DB_USER'),
+        password: env.get('DB_PASSWORD'),
+        database: env.get('DB_DATABASE'),
+      },
+      pool: {
+        min: 2,
+        max: 10,
+        // MariaDB/MySQL mặc định bật NO_ZERO_DATE (strict) → cột timestamp not-null
+        // không có default sẽ lỗi "Invalid default value". Nới sql_mode cho mỗi kết nối.
+        afterCreate: (conn: any, done: (err: Error | null, conn: any) => void) => {
+          conn.query("SET SESSION sql_mode='NO_ENGINE_SUBSTITUTION'", (err: Error | null) =>
+            done(err, conn)
+          )
+        },
+      },
+      migrations: {
+        naturalSort: true,
+        paths: ['database/migrations'],
+      },
+    },
+  },
+})
+
+export default dbConfig
--- a/backend/config/hash.ts
+++ b/backend/config/hash.ts
@ -0,0 +1,19 @@
+import { defineConfig, drivers } from '@adonisjs/core/hash'
+
+const hashConfig = defineConfig({
+  default: 'scrypt',
+  list: {
+    scrypt: drivers.scrypt({
+      cost: 16384,
+      blockSize: 8,
+      parallelization: 1,
+      maxMemory: 33554432,
+    }),
+  },
+})
+
+export default hashConfig
+
+declare module '@adonisjs/core/types' {
+  export interface HashersList extends InferHashers<typeof hashConfig> {}
+}
--- a/backend/config/logger.ts
+++ b/backend/config/logger.ts
@ -0,0 +1,26 @@
+import env from '#start/env'
+import app from '@adonisjs/core/services/app'
+import { defineConfig, targets } from '@adonisjs/core/logger'
+
+const loggerConfig = defineConfig({
+  default: 'app',
+  loggers: {
+    app: {
+      enabled: true,
+      name: 'suggestprice',
+      level: env.get('LOG_LEVEL', 'info'),
+      transport: {
+        targets: targets()
+          .pushIf(!app.inProduction, targets.pretty())
+          .pushIf(app.inProduction, targets.file({ destination: 1 }))
+          .toArray(),
+      },
+    },
+  },
+})
+
+export default loggerConfig
+
+declare module '@adonisjs/core/types' {
+  export interface LoggersList extends InferLoggers<typeof loggerConfig> {}
+}
--- a/backend/database/migrations/1700000000001_create_users_table.ts
+++ b/backend/database/migrations/1700000000001_create_users_table.ts
@ -0,0 +1,19 @@
+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+export default class extends BaseSchema {
+  protected tableName = 'users'
+
+  async up() {
+    this.schema.createTable(this.tableName, (table) => {
+      table.increments('id').notNullable()
+      table.string('username', 100).notNullable().unique()
+      table.string('password').notNullable()
+      table.timestamp('created_at').notNullable()
+      table.timestamp('updated_at').nullable()
+    })
+  }
+
+  async down() {
+    this.schema.dropTable(this.tableName)
+  }
+}
--- a/backend/database/migrations/1700000000002_create_access_tokens_table.ts
+++ b/backend/database/migrations/1700000000002_create_access_tokens_table.ts
@ -0,0 +1,31 @@
+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+export default class extends BaseSchema {
+  protected tableName = 'auth_access_tokens'
+
+  async up() {
+    this.schema.createTable(this.tableName, (table) => {
+      table.increments('id')
+      table
+        .integer('tokenable_id')
+        .notNullable()
+        .unsigned()
+        .references('id')
+        .inTable('users')
+        .onDelete('CASCADE')
+
+      table.string('type').notNullable()
+      table.string('name').nullable()
+      table.string('hash').notNullable()
+      table.text('abilities').notNullable()
+      table.timestamp('created_at')
+      table.timestamp('updated_at')
+      table.timestamp('last_used_at').nullable()
+      table.timestamp('expires_at').nullable()
+    })
+  }
+
+  async down() {
+    this.schema.dropTable(this.tableName)
+  }
+}
--- a/backend/database/migrations/1700000000003_create_products_table.ts
+++ b/backend/database/migrations/1700000000003_create_products_table.ts
@ -0,0 +1,36 @@
+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+export default class extends BaseSchema {
+  protected tableName = 'products'
+
+  async up() {
+    this.schema.createTable(this.tableName, (table) => {
+      table.increments('id').notNullable()
+      table.string('sku', 191).notNullable()
+      table.string('condition', 50).notNullable()
+      table.integer('qty').notNullable().defaultTo(0)
+      table.decimal('price', 12, 2).notNullable().defaultTo(0)
+      table.decimal('ai_price', 12, 2).nullable()
+      table.json('costs').nullable()
+      table.string('package_contain', 255).nullable()
+      table.string('type', 100).nullable()
+      table.string('erp_id', 191).nullable()
+      table.timestamp('created_at').notNullable()
+      table.timestamp('updated_at').notNullable()
+
+      // Một SKU có thể có nhiều condition -> unique theo (sku, condition)
+      table.unique(['sku', 'condition'])
+      // ERP id duy nhất khi có (sync idempotent)
+      table.index(['erp_id'], 'products_erp_id_index')
+    })
+
+    // Full-text search theo sku + type (MySQL 8 / MariaDB 10.5+)
+    this.schema.raw(
+      'ALTER TABLE `products` ADD FULLTEXT `products_fulltext` (`sku`, `type`)'
+    )
+  }
+
+  async down() {
+    this.schema.dropTable(this.tableName)
+  }
+}
--- a/backend/database/migrations/1700000000004_create_logs_table.ts
+++ b/backend/database/migrations/1700000000004_create_logs_table.ts
@ -0,0 +1,30 @@
+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+export default class extends BaseSchema {
+  protected tableName = 'logs'
+
+  async up() {
+    this.schema.createTable(this.tableName, (table) => {
+      table.increments('id').notNullable()
+      table.string('username', 100).notNullable()
+      table.string('action_name', 191).notNullable()
+      table.string('action', 50).notNullable()
+      table
+        .integer('product_id')
+        .unsigned()
+        .nullable()
+        .references('id')
+        .inTable('products')
+        .onDelete('SET NULL')
+      table.json('meta').nullable()
+      table.timestamp('time').notNullable()
+
+      table.index(['product_id'])
+      table.index(['action'])
+    })
+  }
+
+  async down() {
+    this.schema.dropTable(this.tableName)
+  }
+}
--- a/backend/database/migrations/1700000000005_create_histories_table.ts
+++ b/backend/database/migrations/1700000000005_create_histories_table.ts
@ -0,0 +1,29 @@
+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+export default class extends BaseSchema {
+  protected tableName = 'histories'
+
+  async up() {
+    this.schema.createTable(this.tableName, (table) => {
+      table.increments('id').notNullable()
+      table.string('username', 100).notNullable()
+      table
+        .integer('product_id')
+        .unsigned()
+        .notNullable()
+        .references('id')
+        .inTable('products')
+        .onDelete('CASCADE')
+      table.json('data_sources').notNullable()
+      table.json('data_ebay').notNullable()
+      table.json('ai_result').nullable()
+      table.timestamp('time').notNullable()
+
+      table.index(['product_id'])
+    })
+  }
+
+  async down() {
+    this.schema.dropTable(this.tableName)
+  }
+}
--- a/backend/database/migrations/1782434488737_add_first_name_and_last_name_to_users_table.ts
+++ b/backend/database/migrations/1782434488737_add_first_name_and_last_name_to_users_table.ts
@ -0,0 +1,19 @@
+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+export default class extends BaseSchema {
+  protected tableName = 'users'
+
+  async up() {
+    this.schema.alterTable(this.tableName, (table) => {
+      table.string('first_name', 100).nullable()
+      table.string('last_name', 100).nullable()
+    })
+  }
+
+  async down() {
+    this.schema.alterTable(this.tableName, (table) => {
+      table.dropColumn('first_name')
+      table.dropColumn('last_name')
+    })
+  }
+}
--- a/backend/database/migrations/1782442666456_add_warehouse_to_products_table.ts
+++ b/backend/database/migrations/1782442666456_add_warehouse_to_products_table.ts
@ -0,0 +1,17 @@
+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+export default class extends BaseSchema {
+  protected tableName = 'products'
+
+  async up() {
+    this.schema.alterTable(this.tableName, (table) => {
+      table.string('warehouse')
+    })
+  }
+
+  async down() {
+    this.schema.alterTable(this.tableName, (table) => {
+      table.dropColumn('warehouse')
+    })
+  }
+}
--- a/backend/database/migrations/1790000000000_update_products_unique_warehouse.ts
+++ b/backend/database/migrations/1790000000000_update_products_unique_warehouse.ts
@ -0,0 +1,26 @@
+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+export default class extends BaseSchema {
+  protected tableName = 'products'
+
+  async up() {
+    // Backfill warehouse trống -> 'AU' để unique key ổn định.
+    this.defer(async (db) => {
+      await db.from(this.tableName).whereNull('warehouse').update({ warehouse: 'AU' })
+    })
+
+    this.schema.alterTable(this.tableName, (table) => {
+      // Bỏ unique cũ (sku, condition).
+      table.dropUnique(['sku', 'condition'])
+      // Key mới gồm warehouse: cùng 1 sku+condition có thể tồn ở nhiều kho.
+      table.unique(['sku', 'condition', 'warehouse'])
+    })
+  }
+
+  async down() {
+    this.schema.alterTable(this.tableName, (table) => {
+      table.dropUnique(['sku', 'condition', 'warehouse'])
+      table.unique(['sku', 'condition'])
+    })
+  }
+}
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
--- a/backend/package.json
+++ b/backend/package.json
@ -0,0 +1,62 @@
+{
+  "name": "suggestprice-api",
+  "version": "1.0.0",
+  "private": true,
+  "type": "module",
+  "license": "UNLICENSED",
+  "scripts": {
+    "start": "node bin/server.js",
+    "build": "node ace build",
+    "dev": "node ace serve --hmr",
+    "worker": "node ace queue:work",
+    "test": "node ace test",
+    "lint": "eslint .",
+    "typecheck": "tsc --noEmit"
+  },
+  "imports": {
+    "#controllers/*": "./app/controllers/*.js",
+    "#models/*": "./app/models/*.js",
+    "#services/*": "./app/services/*.js",
+    "#validators/*": "./app/validators/*.js",
+    "#middleware/*": "./app/middleware/*.js",
+    "#exceptions/*": "./app/exceptions/*.js",
+    "#providers/*": "./providers/*.js",
+    "#start/*": "./start/*.js",
+    "#config/*": "./config/*.js",
+    "#database/*": "./database/*.js",
+    "#commands/*": "./commands/*.js"
+  },
+  "dependencies": {
+    "@adonisjs/auth": "^9.2.3",
+    "@adonisjs/core": "^6.14.0",
+    "@adonisjs/cors": "^2.2.1",
+    "@adonisjs/lucid": "^21.3.0",
+    "@vinejs/vine": "^2.1.0",
+    "axios": "^1.18.1",
+    "bullmq": "^5.12.0",
+    "ioredis": "^5.4.1",
+    "luxon": "^3.5.0",
+    "mysql2": "^3.11.0",
+    "openai": "^4.56.0",
+    "puppeteer": "^24.43.1",
+    "reflect-metadata": "^0.2.2",
+    "xlsx": "^0.18.5"
+  },
+  "devDependencies": {
+    "@adonisjs/assembler": "^7.8.0",
+    "@adonisjs/tsconfig": "^1.4.0",
+    "@swc/core": "^1.7.0",
+    "@types/luxon": "^3.4.2",
+    "@types/node": "^22.5.0",
+    "hot-hook": "^0.4.0",
+    "pino-pretty": "^11.2.2",
+    "ts-node-maintained": "^10.9.4",
+    "typescript": "~5.5"
+  },
+  "hotHook": {
+    "boundaries": [
+      "./app/controllers/**/*.ts",
+      "./app/middleware/*.ts"
+    ]
+  }
+}
--- a/backend/start/env.ts
+++ b/backend/start/env.ts
@ -0,0 +1,57 @@
+import { Env } from '@adonisjs/core/env'
+
+export default await Env.create(new URL('../', import.meta.url), {
+  NODE_ENV: Env.schema.enum(['development', 'production', 'test'] as const),
+  PORT: Env.schema.number(),
+  APP_KEY: Env.schema.string(),
+  HOST: Env.schema.string({ format: 'host' }),
+  LOG_LEVEL: Env.schema.string.optional(),
+
+  /*
+  |----------------------------------------------------------
+  | Database (MySQL)
+  |----------------------------------------------------------
+  */
+  DB_HOST: Env.schema.string({ format: 'host' }),
+  DB_PORT: Env.schema.number(),
+  DB_USER: Env.schema.string(),
+  DB_PASSWORD: Env.schema.string.optional(),
+  DB_DATABASE: Env.schema.string(),
+
+  /*
+  |----------------------------------------------------------
+  | Redis (queue / BullMQ)
+  |----------------------------------------------------------
+  */
+  REDIS_HOST: Env.schema.string({ format: 'host' }),
+  REDIS_PORT: Env.schema.number(),
+  REDIS_PASSWORD: Env.schema.string.optional(),
+
+  /*
+  |----------------------------------------------------------
+  | Sync ERP định kỳ (cron cho BullMQ job scheduler)
+  |----------------------------------------------------------
+  | SYNC_CRON: biểu thức cron (mặc định 2h sáng mỗi ngày).
+  | SYNC_TZ:   timezone áp cho cron (mặc định Australia/Sydney).
+  */
+  SYNC_CRON: Env.schema.string.optional(),
+  SYNC_TZ: Env.schema.string.optional(),
+
+  /*
+  |----------------------------------------------------------
+  | Pricing engine / external services
+  |----------------------------------------------------------
+  */
+  OPENAI_API_KEY: Env.schema.string.optional(),
+  OPENAI_MODEL: Env.schema.string.optional(),
+  PRICING_AUTO_APPLY_THRESHOLD_PCT: Env.schema.number.optional(),
+  PRICING_FLOOR_MARKUP: Env.schema.number.optional(),
+
+  // ERP (sync service — API hoàn thiện sau)
+  ERP_API_URL: Env.schema.string.optional(),
+  ERP_API_KEY: Env.schema.string.optional(),
+
+  // eBay
+  EBAY_CLIENT_ID: Env.schema.string.optional(),
+  EBAY_CLIENT_SECRET: Env.schema.string.optional(),
+})
--- a/backend/start/kernel.ts
+++ b/backend/start/kernel.ts
@ -0,0 +1,30 @@
+import router from '@adonisjs/core/services/router'
+import server from '@adonisjs/core/services/server'
+
+/**
+ * The error handler is used to convert an exception to a HTTP response.
+ */
+server.errorHandler(() => import('#exceptions/handler'))
+
+/**
+ * Server middleware run on all requests (even unregistered routes).
+ */
+server.use([
+  () => import('#middleware/container_bindings_middleware'),
+  () => import('@adonisjs/cors/cors_middleware'),
+  () => import('@adonisjs/core/bodyparser_middleware'),
+])
+
+/**
+ * Router middleware run only on routes that match a registered route.
+ */
+router.use([
+  () => import('@adonisjs/auth/initialize_auth_middleware'),
+])
+
+/**
+ * Named middleware available to assign to routes.
+ */
+export const middleware = router.named({
+  auth: () => import('#middleware/auth_middleware'),
+})
--- a/backend/start/routes.ts
+++ b/backend/start/routes.ts
@ -0,0 +1,49 @@
+import router from '@adonisjs/core/services/router'
+import { middleware } from '#start/kernel'
+
+const AuthController = () => import('#controllers/auth_controller')
+const ProductsController = () => import('#controllers/products_controller')
+const ImportsController = () => import('#controllers/imports_controller')
+const PricingController = () => import('#controllers/pricing_controller')
+const LogsController = () => import('#controllers/logs_controller')
+const HistoriesController = () => import('#controllers/histories_controller')
+
+router.get('/', async () => ({ service: 'suggestprice-api', status: 'ok' }))
+router.get('/api/health', async () => ({ ok: true }))
+router.get('/api/products/syncProductBySku', [ProductsController, 'syncProductBySku'])
+router.get('/api/products', [ProductsController, 'index'])
+
+router
+  .group(() => {
+    // --- Auth ---
+    router.post('/auth/register', [AuthController, 'register'])
+    router.post('/auth/login', [AuthController, 'login'])
+
+    router
+      .group(() => {
+        router.post('/auth/logout', [AuthController, 'logout'])
+        router.get('/auth/me', [AuthController, 'me'])
+
+        // --- Products (CRUD: manual + sync) ---
+
+        router.post('/products', [ProductsController, 'store'])
+        router.get('/products/:id', [ProductsController, 'show'])
+        router.patch('/products/:id', [ProductsController, 'update'])
+        router.delete('/products/:id', [ProductsController, 'destroy'])
+
+        // --- Import Excel ---
+        router.post('/imports/products', [ImportsController, 'products'])
+
+        // --- Pricing (service gợi ý giá) ---
+        router.post('/pricing/suggest/:id', [PricingController, 'suggest'])
+        router.post('/pricing/suggest/:id/approve', [PricingController, 'approve'])
+        router.post('/pricing/batch', [PricingController, 'batch'])
+
+        // --- Log & History ---
+        router.get('/logs', [LogsController, 'index'])
+        router.get('/histories', [HistoriesController, 'index'])
+        router.get('/histories/:id', [HistoriesController, 'show'])
+      })
+      .use(middleware.auth())
+  })
+  .prefix('/api')
--- a/backend/tests/services/ai_suggestion.spec.ts
+++ b/backend/tests/services/ai_suggestion.spec.ts
@ -0,0 +1,40 @@
+import assert from 'node:assert/strict'
+import { Ignitor } from '@adonisjs/core'
+
+const APP_ROOT = new URL('../../', import.meta.url)
+const IMPORTER = (filePath: string) => {
+   if (filePath.startsWith('./') || filePath.startsWith('../')) {
+      return import(new URL(filePath, APP_ROOT).href)
+   }
+   return import(filePath)
+}
+
+const ignitor = new Ignitor(APP_ROOT, { importer: IMPORTER })
+const app = ignitor.createApp('web')
+await app.init()
+await app.boot()
+
+const ErpService = (await import('#services/erp_service')).default
+const AiService = (await import('#services/ai_service')).default
+const Product = (await import('#models/product')).default
+const EbayService = (await import('#services/ebay_service')).default
+
+async function runSyncServiceTest() {
+   const product = await Product.query().first()
+   if (!product) {
+      throw new Error('Không có sản phẩm nào trong database để test AI suggest')
+   }
+   console.log(Date.now())
+   console.log(`Testing AI suggest for product SKU=${product.sku}, condition=${product.condition}`)
+   const dataSources = await ErpService.getSupplierPricing(product)
+   console.log("dataSources", dataSources.length)
+   const dataEbay = await EbayService.getMarketData(product)
+   console.log("dataEbay", dataEbay.sale.length, dataEbay.sold.length)
+   const result = await AiService.suggest({ dataEbay, dataSources, product })
+
+   assert.ok(result, 'Không nhận được dữ liệu từ AI suggest')
+   console.log(result)
+   console.log(Date.now())
+}
+
+await runSyncServiceTest()
--- a/backend/tests/services/sync_service.spec.ts
+++ b/backend/tests/services/sync_service.spec.ts
@ -0,0 +1,26 @@
+import { Ignitor } from '@adonisjs/core'
+
+const APP_ROOT = new URL('../../', import.meta.url)
+const IMPORTER = (filePath: string) => {
+   if (filePath.startsWith('./') || filePath.startsWith('../')) {
+      return import(new URL(filePath, APP_ROOT).href)
+   }
+   return import(filePath)
+}
+
+const ignitor = new Ignitor(APP_ROOT, { importer: IMPORTER })
+const app = ignitor.createApp('web')
+await app.init()
+await app.boot()
+
+const SyncService = (await import('#services/sync_service')).default
+
+async function runSyncServiceTest() {
+   const startedAt = Date.now()
+   // syncFromErp giờ là orchestrator: chỉ quét ERP và enqueue job upsert lên BullMQ.
+   // Việc upsert thực tế (và retry khi lỗi) do worker `node ace queue:work` xử lý.
+   const summary = await SyncService.syncFromErp('tester', { pageSize: 100 })
+   console.log(`Enqueued ${summary.enqueued}/${summary.total} sản phẩm trong ${Date.now() - startedAt}ms`, summary)
+}
+
+await runSyncServiceTest()
--- a/backend/tsconfig.json
+++ b/backend/tsconfig.json
@ -0,0 +1,20 @@
+{
+  "extends": "@adonisjs/tsconfig/tsconfig.app.json",
+  "compilerOptions": {
+    "rootDir": "./",
+    "outDir": "./build",
+    "paths": {
+      "#controllers/*": ["./app/controllers/*.js"],
+      "#models/*": ["./app/models/*.js"],
+      "#services/*": ["./app/services/*.js"],
+      "#validators/*": ["./app/validators/*.js"],
+      "#middleware/*": ["./app/middleware/*.js"],
+      "#exceptions/*": ["./app/exceptions/*.js"],
+      "#providers/*": ["./providers/*.js"],
+      "#start/*": ["./start/*.js"],
+      "#config/*": ["./config/*.js"],
+      "#database/*": ["./database/*.js"],
+      "#commands/*": ["./commands/*.js"]
+    }
+  }
+}
--- a/frontend/.gitignore
+++ b/frontend/.gitignore
@ -0,0 +1,2 @@
+node_modules/
+dist/
--- a/frontend/favicon.png
+++ b/frontend/favicon.png
--- a/frontend/index.html
+++ b/frontend/index.html
@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="vi">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <link rel="icon" type="image/png" href="/favicon.png" />
+    <title>Listing - Suggest Price</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.jsx"></script>
+  </body>
+</html>
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
--- a/frontend/package.json
+++ b/frontend/package.json
@ -0,0 +1,20 @@
+{
+  "name": "suggestprice-web",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1",
+    "recharts": "^2.12.7"
+  },
+  "devDependencies": {
+    "@vitejs/plugin-react": "^4.3.1",
+    "vite": "^5.4.0"
+  }
+}
--- a/frontend/src/App.jsx
+++ b/frontend/src/App.jsx
@ -0,0 +1,168 @@
+import { useState } from 'react';
+import ProductTablePanel from './components/ProductTablePanel.jsx';
+import ProductFormPanel from './components/ProductFormPanel.jsx';
+import FeedPanel from './components/FeedPanel.jsx';
+
+const initialErpProducts = [
+  { id: 1, sku: 'ERP-001', title: 'Apple iPhone 15', category: 'Phone', price: 999, status: 'Active' },
+  { id: 2, sku: 'ERP-002', title: 'Samsung Galaxy S24', category: 'Phone', price: 899, status: 'Active' },
+  { id: 3, sku: 'ERP-003', title: 'Sony WH-1000XM5', category: 'Audio', price: 349, status: 'Draft' },
+];
+
+const initialManualProducts = [
+  { id: 10, sku: 'MAN-001', title: 'Dell XPS 13', category: 'Laptop', price: 1299, status: 'Listed' },
+  { id: 11, sku: 'MAN-002', title: 'Logitech MX Master 3', category: 'Accessory', price: 99, status: 'Draft' },
+];
+
+const initialFeed = [
+  { id: 1, message: 'Add sản phẩm tên ABCD bị trùng', type: 'warning' },
+  { id: 2, message: 'List thành công sản phẩm XYZ', type: 'success' },
+];
+
+const initialForm = {
+  sku: '',
+  title: '',
+  category: '',
+  price: '',
+  status: 'Draft',
+};
+
+export default function App() {
+  const [isLoggedIn, setIsLoggedIn] = useState(true);
+  const [currentUser, setCurrentUser] = useState('Nguyễn Văn A');
+  const [erpProducts, setErpProducts] = useState(initialErpProducts);
+  const [manualProducts, setManualProducts] = useState(initialManualProducts);
+  const [feedEntries, setFeedEntries] = useState(initialFeed);
+  const [formMode, setFormMode] = useState('add');
+  const [form, setForm] = useState(initialForm);
+
+  function resetForm() {
+    setFormMode('add');
+    setForm(initialForm);
+  }
+
+  function handleSelectProduct(product, source) {
+    setFormMode('edit');
+    setForm({
+      sku: product.sku,
+      title: product.title,
+      category: product.category,
+      price: product.price,
+      status: product.status,
+    });
+
+    if (source === 'erp') {
+      setFeedEntries((prev) => [
+        { id: Date.now(), message: `Đã chọn ERP product ${product.title} để chỉnh sửa`, type: 'info' },
+        ...prev,
+      ]);
+    }
+  }
+
+  function handleImportFromErp() {
+    const selected = erpProducts[0];
+    if (!selected) return;
+    setForm({
+      sku: selected.sku,
+      title: selected.title,
+      category: selected.category,
+      price: selected.price,
+      status: 'Draft',
+    });
+    setFeedEntries((prev) => [
+      { id: Date.now(), message: `Import sản phẩm ${selected.title} từ ERP`, type: 'info' },
+      ...prev,
+    ]);
+  }
+
+  function handleChange(event) {
+    const { name, value } = event.target;
+    setForm((prev) => ({ ...prev, [name]: value }));
+  }
+
+  function handleSubmit(event) {
+    event.preventDefault();
+
+    if (formMode === 'add') {
+      const newProduct = {
+        id: Date.now(),
+        sku: form.sku || `MAN-${Date.now()}`,
+        title: form.title,
+        category: form.category,
+        price: Number(form.price) || 0,
+        status: form.status,
+      };
+
+      setManualProducts((prev) => [newProduct, ...prev]);
+      setFeedEntries((prev) => [
+        { id: Date.now(), message: `Add sản phẩm ${newProduct.title} thành công`, type: 'success' },
+        ...prev,
+      ]);
+    } else {
+      setManualProducts((prev) =>
+        prev.map((item) => (item.sku === form.sku ? { ...item, ...form, price: Number(form.price) || 0 } : item))
+      );
+      setFeedEntries((prev) => [
+        { id: Date.now(), message: `Cập nhật sản phẩm ${form.title} thành công`, type: 'success' },
+        ...prev,
+      ]);
+    }
+
+    resetForm();
+  }
+
+  return (
+    <div className="app-shell">
+      <header className="topbar">
+        <div className="topbar-left">
+          {isLoggedIn ? (
+            <span className="user-pill">Hi, {currentUser}</span>
+          ) : (
+            <span className="user-pill">Chưa đăng nhập</span>
+          )}
+        </div>
+
+        <div className="page-title">Listing - Suggest Price</div>
+
+        <div className="topbar-actions">
+          {isLoggedIn ? (
+            <button type="button" className="secondary" onClick={() => setIsLoggedIn(false)}>
+              Logout
+            </button>
+          ) : (
+            <button type="button" onClick={() => setIsLoggedIn(true)}>
+              Login
+            </button>
+          )}
+        </div>
+      </header>
+
+      <main className="dashboard-grid">
+        <ProductTablePanel
+          title="Product ERP"
+          badge="Source"
+          products={erpProducts}
+          onSelect={(product) => handleSelectProduct(product, 'erp')}
+        />
+
+        <ProductTablePanel
+          title="Product Manual"
+          badge="Local"
+          products={manualProducts}
+          onSelect={(product) => handleSelectProduct(product, 'manual')}
+        />
+
+        <ProductFormPanel
+          formMode={formMode}
+          form={form}
+          onChange={handleChange}
+          onSubmit={handleSubmit}
+          onImport={handleImportFromErp}
+          onClear={resetForm}
+        />
+
+        <FeedPanel entries={feedEntries} />
+      </main>
+    </div>
+  );
+}
--- a/frontend/src/components/AiResult.jsx
+++ b/frontend/src/components/AiResult.jsx
@ -0,0 +1,15 @@
+export default function AiResult({ ai }) {
+  if (!ai) return null;
+  return (
+    <div className="ai-card">
+      <div>
+        <span className="ai-price">${ai.suggestedPrice}</span>
+        {ai._mock && <span className="mock-badge">MOCK</span>}
+      </div>
+      <div className="ai-range">
+        Khoảng đề xuất: ${ai.priceRange?.min} – ${ai.priceRange?.max}
+      </div>
+      <div className="ai-reasoning">{ai.reasoning}</div>
+    </div>
+  );
+}
--- a/frontend/src/components/FeedPanel.jsx
+++ b/frontend/src/components/FeedPanel.jsx
@ -0,0 +1,18 @@
+export default function FeedPanel({ entries }) {
+   return (
+      <section className="panel">
+         <div className="panel-header">
+            <h2>New Feed</h2>
+            <span className="panel-badge">Activity</span>
+         </div>
+         <div className="feed-list">
+            {entries.map((entry) => (
+               <div key={entry.id} className={`feed-item ${entry.type}`}>
+                  <span className="feed-dot" />
+                  <span>{entry.message}</span>
+               </div>
+            ))}
+         </div>
+      </section>
+   )
+}
--- a/frontend/src/components/PriceChart.jsx
+++ b/frontend/src/components/PriceChart.jsx
@ -0,0 +1,66 @@
+import {
+  LineChart,
+  Line,
+  XAxis,
+  YAxis,
+  CartesianGrid,
+  Tooltip,
+  Legend,
+  ResponsiveContainer,
+} from 'recharts';
+
+/**
+ * Gộp nhiều series ({date, price}) theo ngày thành 1 mảng cho Recharts.
+ * lines: [{ key, name, color, data: [{date, price}] }]
+ */
+function mergeByDate(lines) {
+  const map = new Map();
+  for (const line of lines) {
+    for (const pt of line.data || []) {
+      if (!map.has(pt.date)) map.set(pt.date, { date: pt.date });
+      map.get(pt.date)[line.key] = pt.price;
+    }
+  }
+  return [...map.values()].sort((a, b) => a.date.localeCompare(b.date));
+}
+
+export default function PriceChart({ title, lines }) {
+  const hasData = lines.some((l) => (l.data || []).length > 0);
+  const merged = mergeByDate(lines);
+
+  return (
+    <div className="chart-card">
+      <h3>{title}</h3>
+      {!hasData ? (
+        <p className="empty">Chưa có dữ liệu.</p>
+      ) : (
+        <ResponsiveContainer width="100%" height={280}>
+          <LineChart data={merged} margin={{ top: 8, right: 16, bottom: 8, left: 0 }}>
+            <CartesianGrid strokeDasharray="3 3" stroke="#eee" />
+            <XAxis dataKey="date" tick={{ fontSize: 11 }} />
+            <YAxis
+              tick={{ fontSize: 11 }}
+              width={56}
+              tickFormatter={(v) => `$${v}`}
+              domain={['auto', 'auto']}
+            />
+            <Tooltip formatter={(v) => `$${v}`} />
+            <Legend />
+            {lines.map((l) => (
+              <Line
+                key={l.key}
+                type="monotone"
+                dataKey={l.key}
+                name={l.name}
+                stroke={l.color}
+                dot={false}
+                connectNulls
+                strokeWidth={2}
+              />
+            ))}
+          </LineChart>
+        </ResponsiveContainer>
+      )}
+    </div>
+  );
+}
--- a/frontend/src/components/ProductFormPanel.jsx
+++ b/frontend/src/components/ProductFormPanel.jsx
@ -0,0 +1,48 @@
+export default function ProductFormPanel({ formMode, form, onChange, onSubmit, onImport, onClear }) {
+   return (
+      <section className="panel form-panel">
+         <div className="panel-header">
+            <h2>{formMode === 'add' ? 'Add Product' : 'Edit Product'}</h2>
+            {formMode === 'add' && (
+               <button type="button" className="secondary" onClick={onImport}>
+                  Import
+               </button>
+            )}
+         </div>
+
+         <form className="product-form" onSubmit={onSubmit}>
+            <label>
+               SKU
+               <input name="sku" value={form.sku} onChange={onChange} placeholder="SKU" />
+            </label>
+            <label>
+               Tên sản phẩm
+               <input name="title" value={form.title} onChange={onChange} placeholder="Tên sản phẩm" />
+            </label>
+            <label>
+               Category
+               <input name="category" value={form.category} onChange={onChange} placeholder="Category" />
+            </label>
+            <label>
+               Price
+               <input name="price" type="number" value={form.price} onChange={onChange} placeholder="Price" />
+            </label>
+            <label>
+               Status
+               <select name="status" value={form.status} onChange={onChange}>
+                  <option value="Draft">Draft</option>
+                  <option value="Listed">Listed</option>
+                  <option value="Active">Active</option>
+               </select>
+            </label>
+
+            <div className="form-actions">
+               <button type="submit">{formMode === 'add' ? 'Add' : 'Save'}</button>
+               <button type="button" className="secondary" onClick={onClear}>
+                  Clear
+               </button>
+            </div>
+         </form>
+      </section>
+   )
+}
--- a/frontend/src/components/ProductTablePanel.jsx
+++ b/frontend/src/components/ProductTablePanel.jsx
@ -0,0 +1,32 @@
+export default function ProductTablePanel({ title, badge, products, onSelect }) {
+   return (
+      <section className="panel">
+         <div className="panel-header">
+            <h2>{title}</h2>
+            <span className="panel-badge">{badge}</span>
+         </div>
+         <table className="data-table">
+            <thead>
+               <tr>
+                  <th>SKU</th>
+                  <th>Tên</th>
+                  <th>Category</th>
+                  <th>Price</th>
+                  <th>Status</th>
+               </tr>
+            </thead>
+            <tbody>
+               {products.map((product) => (
+                  <tr key={product.id} onClick={() => onSelect(product)}>
+                     <td>{product.sku}</td>
+                     <td>{product.title}</td>
+                     <td>{product.category}</td>
+                     <td>${product.price}</td>
+                     <td>{product.status}</td>
+                  </tr>
+               ))}
+            </tbody>
+         </table>
+      </section>
+   )
+}
--- a/frontend/src/components/SuggestForm.jsx
+++ b/frontend/src/components/SuggestForm.jsx
@ -0,0 +1,40 @@
+const CONDITIONS = [
+  { value: 'NEW', label: 'New' },
+  { value: 'REF', label: 'Refurbished' },
+  { value: 'USED', label: 'Used' },
+];
+
+export default function SuggestForm({ sku, setSku, condition, setCondition, onSubmit, loading }) {
+  return (
+    <form
+      className="form"
+      onSubmit={(e) => {
+        e.preventDefault();
+        onSubmit();
+      }}
+    >
+      <div className="field">
+        <label htmlFor="sku">SKU</label>
+        <input
+          id="sku"
+          value={sku}
+          onChange={(e) => setSku(e.target.value)}
+          placeholder="VD: C9200L-24T-4G-E"
+        />
+      </div>
+      <div className="field">
+        <label htmlFor="condition">Condition</label>
+        <select id="condition" value={condition} onChange={(e) => setCondition(e.target.value)}>
+          {CONDITIONS.map((c) => (
+            <option key={c.value} value={c.value}>
+              {c.label}
+            </option>
+          ))}
+        </select>
+      </div>
+      <button type="submit" disabled={loading || !sku.trim()}>
+        {loading ? 'Đang xử lý…' : 'Suggest'}
+      </button>
+    </form>
+  );
+}
--- a/frontend/src/main.jsx
+++ b/frontend/src/main.jsx
@ -0,0 +1,10 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import App from './App.jsx';
+import './styles.css';
+
+ReactDOM.createRoot(document.getElementById('root')).render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);
--- a/frontend/src/styles.css
+++ b/frontend/src/styles.css
@ -0,0 +1,212 @@
+* {
+  box-sizing: border-box;
+}
+body {
+  margin: 0;
+  font-family:
+    system-ui,
+    -apple-system,
+    "Segoe UI",
+    Roboto,
+    sans-serif;
+  background: #f3f5f9;
+  color: #1f2937;
+}
+
+button {
+  border: none;
+  border-radius: 8px;
+  padding: 9px 14px;
+  font-size: 14px;
+  font-weight: 600;
+  cursor: pointer;
+  background: #2563eb;
+  color: white;
+}
+
+button.secondary {
+  background: #e5e7eb;
+  color: #111827;
+}
+
+.app-shell {
+  min-height: 100vh;
+  padding: 20px;
+}
+
+.topbar {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  background: white;
+  border-radius: 16px;
+  padding: 16px 20px;
+  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
+  margin-bottom: 20px;
+}
+
+.topbar-left,
+.topbar-actions {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+}
+
+.brand {
+  font-size: 18px;
+  font-weight: 700;
+  color: #1d4ed8;
+}
+
+.user-pill,
+.panel-badge {
+  display: inline-flex;
+  align-items: center;
+  padding: 6px 10px;
+  border-radius: 999px;
+  background: #eff6ff;
+  color: #1d4ed8;
+  font-size: 12px;
+  font-weight: 600;
+}
+
+.page-title {
+  font-size: 20px;
+  font-weight: 700;
+  color: #111827;
+}
+
+.dashboard-grid {
+  display: grid;
+  grid-template-columns: repeat(4, minmax(0, 1fr));
+  gap: 20px;
+  align-items: stretch;
+}
+
+.panel {
+  background: white;
+  border-radius: 16px;
+  padding: 16px;
+  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
+  height: 86vh;
+}
+
+.panel-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 12px;
+}
+
+.panel-header h2 {
+  margin: 0;
+  font-size: 16px;
+}
+
+.data-table {
+  width: 100%;
+  border-collapse: collapse;
+  font-size: 14px;
+}
+
+.data-table th,
+.data-table td {
+  text-align: left;
+  padding: 10px 8px;
+  border-bottom: 1px solid #e5e7eb;
+}
+
+.data-table tbody tr {
+  cursor: pointer;
+}
+
+.data-table tbody tr:hover {
+  background: #f8fafc;
+}
+
+.form-panel {
+  min-height: 100%;
+}
+
+.product-form {
+  display: grid;
+  gap: 12px;
+}
+
+.product-form label {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  font-size: 13px;
+  font-weight: 600;
+  color: #374151;
+}
+
+.product-form input,
+.product-form select {
+  border: 1px solid #d1d5db;
+  border-radius: 8px;
+  padding: 9px 10px;
+  font-size: 14px;
+}
+
+.form-actions {
+  display: flex;
+  gap: 10px;
+  margin-top: 6px;
+}
+
+.feed-list {
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.feed-item {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 10px 12px;
+  border-radius: 10px;
+  background: #f8fafc;
+  color: #374151;
+}
+
+.feed-item.warning {
+  background: #fff7ed;
+  color: #9a2c00;
+}
+
+.feed-item.success {
+  background: #ecfdf3;
+  color: #166534;
+}
+
+.feed-item.info {
+  background: #eff6ff;
+  color: #1d4ed8;
+}
+
+.feed-dot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  background: currentColor;
+}
+
+@media (max-width: 1200px) {
+  .dashboard-grid {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+}
+
+@media (max-width: 900px) {
+  .dashboard-grid {
+    grid-template-columns: 1fr;
+  }
+
+  .topbar {
+    flex-direction: column;
+    gap: 10px;
+  }
+}
--- a/frontend/vite.config.js
+++ b/frontend/vite.config.js
@ -0,0 +1,12 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    port: 5173,
+    proxy: {
+      '/api': 'http://localhost:8386',
+    },
+  },
+});