diff --git a/backend/app/Controller/Api/V1/SkuMappingController.php b/backend/app/Controller/Api/V1/SkuMappingController.php
new file mode 100644
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+++ b/backend/app/Controller/Api/V1/SkuMappingController.php
@@ -0,0 +1,567 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Controller\Api\V1;
+
+use App\Controller\AbstractController;
+use App\Middleware\AuthMiddleware;
+use App\Middleware\PermissionMiddleware;
+use App\Model\SkuMapping;
+use App\Model\SkuOrigin;
+use App\Model\Store;
+use App\Service\OperationLogService;
+use App\Service\SkuService;
+use Hyperf\HttpServer\Annotation\Controller;
+use Hyperf\HttpServer\Annotation\Middleware;
+use Hyperf\HttpServer\Annotation\RequestMapping;
+use OpenApi\Attributes as OA;
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * SKU 平台映射管理接口
+ */
+#[OA\Tag(name: 'SkuMappings', description: 'SKU 平台映射管理')]
+#[Controller(prefix: "/api/v1/sku-mappings")]
+#[Middleware(AuthMiddleware::class)]
+#[Middleware(PermissionMiddleware::class)]
+class SkuMappingController extends AbstractController
+{
+    public function __construct(
+        protected readonly SkuService $skuService,
+    ) {}
+
+    /**
+     * 映射列表
+     */
+    #[OA\Get(
+        path: '/sku-mappings',
+        summary: 'SKU 映射列表',
+        description: '获取 SKU 平台映射列表，支持分页和多维度筛选',
+        security: [['bearerAuth' => []]],
+        tags: ['SkuMappings'],
+        parameters: [
+            new OA\Parameter(name: 'page', in: 'query', required: false, schema: new OA\Schema(type: 'integer', default: 1)),
+            new OA\Parameter(name: 'per_page', in: 'query', required: false, schema: new OA\Schema(type: 'integer', default: 15, maximum: 100)),
+            new OA\Parameter(name: 'company_id', in: 'query', required: false, description: '公司 ID 精确筛选', schema: new OA\Schema(type: 'integer')),
+            new OA\Parameter(name: 'platform_id', in: 'query', required: false, description: '平台 ID 精确筛选', schema: new OA\Schema(type: 'integer')),
+            new OA\Parameter(name: 'store_id', in: 'query', required: false, description: '店铺 ID 精确筛选', schema: new OA\Schema(type: 'integer')),
+            new OA\Parameter(name: 'origin_sku', in: 'query', required: false, description: '原始 SKU 模糊搜索', schema: new OA\Schema(type: 'string')),
+            new OA\Parameter(name: 'platform_outer_sku', in: 'query', required: false, description: '平台侧 SKU 模糊搜索', schema: new OA\Schema(type: 'string')),
+            new OA\Parameter(name: 'enabled', in: 'query', required: false, description: '启用状态', schema: new OA\Schema(type: 'boolean')),
+        ],
+        responses: [
+            new OA\Response(
+                response: 200,
+                description: '获取成功',
+                content: new OA\JsonContent(properties: [
+                    new OA\Property(property: 'code', type: 'integer', example: 0),
+                    new OA\Property(property: 'message', type: 'string', example: '获取成功'),
+                    new OA\Property(property: 'data', properties: [
+                        new OA\Property(property: 'items', type: 'array', items: new OA\Items(ref: '#/components/schemas/SkuMapping')),
+                        new OA\Property(property: 'total', type: 'integer', example: 100),
+                        new OA\Property(property: 'page', type: 'integer', example: 1),
+                        new OA\Property(property: 'per_page', type: 'integer', example: 15),
+                    ], type: 'object'),
+                ])
+            ),
+            new OA\Response(response: 401, description: '未认证', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+            new OA\Response(response: 403, description: '无权限', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+        ]
+    )]
+    #[RequestMapping(path: "", methods: "GET")]
+    public function index(): array
+    {
+        $query = SkuMapping::query()->select([
+            'id', 'company_id', 'platform_id', 'store_id', 'origin_sku',
+            'origin_sku_id', 'platform_outer_sku', 'platform_product_id',
+            'enabled', 'note', 'created_at', 'updated_at',
+        ]);
+
+        $this->applyDataScope($query);
+
+        // 筛选条件
+        $filters = [
+            'company_id' => 'exact',
+            'platform_id' => 'exact',
+            'store_id' => 'exact',
+        ];
+
+        foreach ($filters as $field => $type) {
+            $value = $this->request->input($field);
+            if ($value !== null && $value !== '') {
+                $query->where($field, (int) $value);
+            }
+        }
+
+        $origin_sku = $this->request->input('origin_sku');
+        if ($origin_sku !== null && $origin_sku !== '') {
+            $query->where('origin_sku', 'ilike', "%{$origin_sku}%");
+        }
+
+        $platform_outer_sku = $this->request->input('platform_outer_sku');
+        if ($platform_outer_sku !== null && $platform_outer_sku !== '') {
+            $query->where('platform_outer_sku', 'ilike', "%{$platform_outer_sku}%");
+        }
+
+        $enabled = $this->request->input('enabled');
+        if ($enabled !== null && $enabled !== '') {
+            $query->where('enabled', filter_var($enabled, FILTER_VALIDATE_BOOLEAN));
+        }
+
+        $query->orderBy('created_at', 'desc');
+
+        $per_page = min(max((int) $this->request->input('per_page', 15), 1), 100);
+        $page = max((int) $this->request->input('page', 1), 1);
+
+        $total = $query->count();
+        $items = $query->offset(($page - 1) * $per_page)->limit($per_page)->get();
+
+        return [
+            'code' => 0,
+            'message' => '获取成功',
+            'data' => [
+                'items' => $items,
+                'total' => $total,
+                'page' => $page,
+                'per_page' => $per_page,
+            ],
+        ];
+    }
+
+    /**
+     * 检查重复映射
+     */
+    #[OA\Get(
+        path: '/sku-mappings/check-duplicate',
+        summary: '检查同平台重复映射',
+        description: '检查指定 origin_sku 在某平台下是否已存在映射记录，帮助用户决定是否复用已有编码',
+        security: [['bearerAuth' => []]],
+        tags: ['SkuMappings'],
+        parameters: [
+            new OA\Parameter(name: 'origin_sku_id', in: 'query', required: true, description: '内部 SKU ID', schema: new OA\Schema(type: 'integer')),
+            new OA\Parameter(name: 'platform_id', in: 'query', required: true, description: '平台 ID', schema: new OA\Schema(type: 'integer')),
+        ],
+        responses: [
+            new OA\Response(
+                response: 200,
+                description: '检查完成',
+                content: new OA\JsonContent(properties: [
+                    new OA\Property(property: 'code', type: 'integer', example: 0),
+                    new OA\Property(property: 'data', properties: [
+                        new OA\Property(property: 'has_duplicate', type: 'boolean', example: true),
+                        new OA\Property(property: 'existing_mappings', type: 'array', items: new OA\Items(type: 'object')),
+                        new OA\Property(property: 'message', type: 'string'),
+                    ], type: 'object'),
+                ])
+            ),
+            new OA\Response(response: 422, description: '参数校验失败', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+        ]
+    )]
+    #[RequestMapping(path: "check-duplicate", methods: "GET")]
+    public function checkDuplicate(): ResponseInterface|array
+    {
+        $origin_sku_id = $this->request->input('origin_sku_id');
+        $platform_id = $this->request->input('platform_id');
+
+        if (!$origin_sku_id || !$platform_id) {
+            return $this->response->json([
+                'code' => 422,
+                'message' => '缺少必填参数: origin_sku_id, platform_id',
+            ])->withStatus(422);
+        }
+
+        $result = $this->skuService->checkDuplicate((int) $origin_sku_id, (int) $platform_id);
+
+        return [
+            'code' => 0,
+            'message' => 'success',
+            'data' => $result,
+        ];
+    }
+
+    /**
+     * 自动生成 platform_outer_sku
+     */
+    #[OA\Post(
+        path: '/sku-mappings/generate-sku',
+        summary: '自动生成平台侧 SKU',
+        description: '根据指定策略自动生成 platform_outer_sku，同时返回重复检测结果',
+        security: [['bearerAuth' => []]],
+        tags: ['SkuMappings'],
+        requestBody: new OA\RequestBody(
+            required: true,
+            content: new OA\JsonContent(
+                required: ['origin_sku_id', 'platform_id', 'strategy'],
+                properties: [
+                    new OA\Property(property: 'origin_sku_id', type: 'integer', example: 1),
+                    new OA\Property(property: 'platform_id', type: 'integer', example: 1),
+                    new OA\Property(property: 'strategy', type: 'string', enum: ['prefix', 'prefix_random', 'manual'], example: 'prefix'),
+                    new OA\Property(property: 'prefix', type: 'string', example: 'C03'),
+                    new OA\Property(property: 'random_length', type: 'integer', example: 4),
+                    new OA\Property(property: 'manual_value', type: 'string', nullable: true),
+                ]
+            )
+        ),
+        responses: [
+            new OA\Response(
+                response: 200,
+                description: '生成成功',
+                content: new OA\JsonContent(properties: [
+                    new OA\Property(property: 'code', type: 'integer', example: 0),
+                    new OA\Property(property: 'data', properties: [
+                        new OA\Property(property: 'generated_sku', type: 'string', example: 'C03_0032'),
+                        new OA\Property(property: 'strategy_record', type: 'string', example: 'prefix:C03'),
+                        new OA\Property(property: 'has_duplicate', type: 'boolean'),
+                        new OA\Property(property: 'existing_mappings', type: 'array', items: new OA\Items(type: 'object')),
+                        new OA\Property(property: 'message', type: 'string'),
+                    ], type: 'object'),
+                ])
+            ),
+            new OA\Response(response: 422, description: '参数校验失败', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+        ]
+    )]
+    #[RequestMapping(path: "generate-sku", methods: "POST")]
+    public function generateSku(): ResponseInterface|array
+    {
+        $data = $this->request->all();
+
+        $required = ['origin_sku_id', 'platform_id', 'strategy'];
+        foreach ($required as $field) {
+            if (!isset($data[$field]) || $data[$field] === '') {
+                return $this->response->json([
+                    'code' => 422,
+                    'message' => "缺少必填参数: {$field}",
+                ])->withStatus(422);
+            }
+        }
+
+        $origin_sku_id = (int) $data['origin_sku_id'];
+        $platform_id = (int) $data['platform_id'];
+        $strategy = $data['strategy'];
+        $prefix = $data['prefix'] ?? '';
+        $random_length = (int) ($data['random_length'] ?? 4);
+        $manual_value = $data['manual_value'] ?? null;
+
+        // 查找 origin_sku 记录
+        $sku_origin = SkuOrigin::query()->find($origin_sku_id);
+        if (!$sku_origin) {
+            return $this->response->json([
+                'code' => 422,
+                'message' => '指定的内部 SKU 不存在',
+            ])->withStatus(422);
+        }
+
+        // 生成 platform_outer_sku
+        $generated_sku = $this->skuService->generatePlatformOuterSku(
+            strategy: $strategy,
+            origin_sku: $sku_origin->sku,
+            prefix: $prefix,
+            random_length: $random_length,
+            manual_value: $manual_value,
+        );
+
+        $strategy_record = $this->skuService->buildStrategyRecord($strategy, $prefix, $random_length);
+
+        // 检查重复
+        $duplicate_check = $this->skuService->checkDuplicate($origin_sku_id, $platform_id);
+
+        return [
+            'code' => 0,
+            'message' => 'success',
+            'data' => [
+                'generated_sku' => $generated_sku,
+                'strategy_record' => $strategy_record,
+                'has_duplicate' => $duplicate_check['has_duplicate'],
+                'existing_mappings' => $duplicate_check['existing_mappings'],
+                'message' => $duplicate_check['message'],
+            ],
+        ];
+    }
+
+    /**
+     * 映射详情
+     */
+    #[OA\Get(
+        path: '/sku-mappings/{id}',
+        summary: 'SKU 映射详情',
+        security: [['bearerAuth' => []]],
+        tags: ['SkuMappings'],
+        parameters: [
+            new OA\Parameter(name: 'id', in: 'path', required: true, schema: new OA\Schema(type: 'integer')),
+        ],
+        responses: [
+            new OA\Response(
+                response: 200,
+                description: '获取成功',
+                content: new OA\JsonContent(properties: [
+                    new OA\Property(property: 'code', type: 'integer', example: 0),
+                    new OA\Property(property: 'message', type: 'string', example: '获取成功'),
+                    new OA\Property(property: 'data', ref: '#/components/schemas/SkuMapping'),
+                ])
+            ),
+            new OA\Response(response: 404, description: '数据不存在', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+        ]
+    )]
+    #[RequestMapping(path: "{id}", methods: "GET")]
+    public function show(int $id): ResponseInterface|array
+    {
+        $query = SkuMapping::query();
+        $this->applyDataScope($query);
+        $record = $query->where('id', $id)->first();
+
+        if (!$record) {
+            return $this->response->json([
+                'code' => 404,
+                'message' => '数据不存在',
+            ])->withStatus(404);
+        }
+
+        return [
+            'code' => 0,
+            'message' => '获取成功',
+            'data' => $record,
+        ];
+    }
+
+    /**
+     * 创建映射
+     */
+    #[OA\Post(
+        path: '/sku-mappings',
+        summary: '创建 SKU 映射',
+        security: [['bearerAuth' => []]],
+        tags: ['SkuMappings'],
+        requestBody: new OA\RequestBody(
+            required: true,
+            content: new OA\JsonContent(
+                required: ['company_id', 'platform_id', 'origin_sku', 'platform_product_id'],
+                properties: [
+                    new OA\Property(property: 'company_id', type: 'integer', example: 3),
+                    new OA\Property(property: 'platform_id', type: 'integer', example: 1),
+                    new OA\Property(property: 'store_id', type: 'integer', nullable: true, example: 101),
+                    new OA\Property(property: 'origin_sku', type: 'string', example: '0032'),
+                    new OA\Property(property: 'origin_sku_id', type: 'integer', nullable: true, example: 1),
+                    new OA\Property(property: 'platform_product_id', type: 'string', example: 'ITEM-001'),
+                    new OA\Property(property: 'platform_outer_sku', type: 'string', nullable: true, example: 'C03_0032'),
+                    new OA\Property(property: 'generation_strategy', type: 'string', nullable: true, example: 'prefix:C03'),
+                    new OA\Property(property: 'warehouse_id', type: 'integer', nullable: true),
+                    new OA\Property(property: 'enabled', type: 'boolean', example: true),
+                    new OA\Property(property: 'note', type: 'string', nullable: true),
+                ]
+            )
+        ),
+        responses: [
+            new OA\Response(
+                response: 201,
+                description: '创建成功',
+                content: new OA\JsonContent(properties: [
+                    new OA\Property(property: 'code', type: 'integer', example: 0),
+                    new OA\Property(property: 'message', type: 'string', example: '创建成功'),
+                    new OA\Property(property: 'data', ref: '#/components/schemas/SkuMapping'),
+                ])
+            ),
+            new OA\Response(response: 422, description: '参数校验失败', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+        ]
+    )]
+    #[RequestMapping(path: "", methods: "POST")]
+    public function store(): ResponseInterface|array
+    {
+        $data = $this->request->all();
+
+        $required_fields = ['company_id', 'platform_id', 'origin_sku', 'platform_product_id'];
+        foreach ($required_fields as $field) {
+            if (!isset($data[$field]) || $data[$field] === '') {
+                return $this->response->json([
+                    'code' => 422,
+                    'message' => "缺少必填字段: {$field}",
+                ])->withStatus(422);
+            }
+        }
+
+        $record = SkuMapping::query()->create([
+            'company_id' => (int) $data['company_id'],
+            'platform_id' => (int) $data['platform_id'],
+            'store_id' => isset($data['store_id']) ? (int) $data['store_id'] : null,
+            'origin_sku' => $data['origin_sku'],
+            'origin_sku_id' => isset($data['origin_sku_id']) ? (int) $data['origin_sku_id'] : null,
+            'platform_product_id' => $data['platform_product_id'],
+            'platform_outer_sku' => $data['platform_outer_sku'] ?? null,
+            'generation_strategy' => $data['generation_strategy'] ?? null,
+            'warehouse_id' => isset($data['warehouse_id']) ? (int) $data['warehouse_id'] : null,
+            'enabled' => $data['enabled'] ?? true,
+            'note' => $data['note'] ?? null,
+        ]);
+
+        $user_id = OperationLogService::getCurrentUserId();
+        if ($user_id) {
+            OperationLogService::log(
+                $user_id,
+                'create',
+                'sku_mapping',
+                $record->id,
+                '创建 SKU 映射: ' . $data['origin_sku'] . ' → ' . ($data['platform_outer_sku'] ?? 'N/A'),
+                ip: $this->request->getHeaderLine('x-real-ip') ?: null,
+            );
+        }
+
+        return $this->response->json([
+            'code' => 0,
+            'message' => '创建成功',
+            'data' => $record,
+        ])->withStatus(201);
+    }
+
+    /**
+     * 更新映射
+     */
+    #[OA\Put(
+        path: '/sku-mappings/{id}',
+        summary: '更新 SKU 映射',
+        security: [['bearerAuth' => []]],
+        tags: ['SkuMappings'],
+        parameters: [
+            new OA\Parameter(name: 'id', in: 'path', required: true, schema: new OA\Schema(type: 'integer')),
+        ],
+        requestBody: new OA\RequestBody(
+            required: true,
+            content: new OA\JsonContent(properties: [
+                new OA\Property(property: 'origin_sku', type: 'string'),
+                new OA\Property(property: 'origin_sku_id', type: 'integer', nullable: true),
+                new OA\Property(property: 'platform_product_id', type: 'string'),
+                new OA\Property(property: 'platform_outer_sku', type: 'string', nullable: true),
+                new OA\Property(property: 'generation_strategy', type: 'string', nullable: true),
+                new OA\Property(property: 'store_id', type: 'integer', nullable: true),
+                new OA\Property(property: 'warehouse_id', type: 'integer', nullable: true),
+                new OA\Property(property: 'enabled', type: 'boolean'),
+                new OA\Property(property: 'note', type: 'string', nullable: true),
+            ])
+        ),
+        responses: [
+            new OA\Response(
+                response: 200,
+                description: '更新成功',
+                content: new OA\JsonContent(properties: [
+                    new OA\Property(property: 'code', type: 'integer', example: 0),
+                    new OA\Property(property: 'message', type: 'string', example: '更新成功'),
+                    new OA\Property(property: 'data', ref: '#/components/schemas/SkuMapping'),
+                ])
+            ),
+            new OA\Response(response: 404, description: '数据不存在', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+        ]
+    )]
+    #[RequestMapping(path: "{id}", methods: "PUT")]
+    public function update(int $id): ResponseInterface|array
+    {
+        $query = SkuMapping::query();
+        $this->applyDataScope($query);
+        $record = $query->where('id', $id)->first();
+
+        if (!$record) {
+            return $this->response->json([
+                'code' => 404,
+                'message' => '数据不存在',
+            ])->withStatus(404);
+        }
+
+        $data = $this->request->all();
+        $allowed_fields = [
+            'origin_sku', 'origin_sku_id', 'platform_product_id', 'platform_outer_sku',
+            'generation_strategy', 'store_id', 'warehouse_id', 'enabled', 'note',
+        ];
+        $update_data = array_intersect_key($data, array_flip($allowed_fields));
+
+        $record->update($update_data);
+
+        $user_id = OperationLogService::getCurrentUserId();
+        if ($user_id) {
+            OperationLogService::log(
+                $user_id,
+                'update',
+                'sku_mapping',
+                $record->id,
+                "更新 SKU 映射 #{$record->id}",
+                detail: ['updated_fields' => array_keys($update_data)],
+                ip: $this->request->getHeaderLine('x-real-ip') ?: null,
+            );
+        }
+
+        return [
+            'code' => 0,
+            'message' => '更新成功',
+            'data' => $record->fresh(),
+        ];
+    }
+
+    /**
+     * 删除映射
+     */
+    #[OA\Delete(
+        path: '/sku-mappings/{id}',
+        summary: '删除 SKU 映射',
+        security: [['bearerAuth' => []]],
+        tags: ['SkuMappings'],
+        parameters: [
+            new OA\Parameter(name: 'id', in: 'path', required: true, schema: new OA\Schema(type: 'integer')),
+        ],
+        responses: [
+            new OA\Response(
+                response: 200,
+                description: '删除成功',
+                content: new OA\JsonContent(properties: [
+                    new OA\Property(property: 'code', type: 'integer', example: 0),
+                    new OA\Property(property: 'message', type: 'string', example: '删除成功'),
+                ])
+            ),
+            new OA\Response(response: 404, description: '数据不存在', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+        ]
+    )]
+    #[RequestMapping(path: "{id}", methods: "DELETE")]
+    public function destroy(int $id): ResponseInterface|array
+    {
+        $query = SkuMapping::query();
+        $this->applyDataScope($query);
+        $record = $query->where('id', $id)->first();
+
+        if (!$record) {
+            return $this->response->json([
+                'code' => 404,
+                'message' => '数据不存在',
+            ])->withStatus(404);
+        }
+
+        $record->delete();
+
+        $user_id = OperationLogService::getCurrentUserId();
+        if ($user_id) {
+            OperationLogService::log(
+                $user_id,
+                'delete',
+                'sku_mapping',
+                $id,
+                "删除 SKU 映射 #{$id}",
+                ip: $this->request->getHeaderLine('x-real-ip') ?: null,
+            );
+        }
+
+        return [
+            'code' => 0,
+            'message' => '删除成功',
+        ];
+    }
+
+    /**
+     * DataScope 过滤
+     */
+    private function applyDataScope(\Hyperf\Database\Model\Builder $query): void
+    {
+        $scope_type = $this->request->getAttribute('scope_type');
+        $scope_ids = $this->request->getAttribute('scope_ids', []);
+
+        if ($scope_type === 'store') {
+            $query->whereIn('store_id', $scope_ids);
+        } elseif ($scope_type === 'platform') {
+            $query->whereIn('platform_id', $scope_ids);
+        }
+    }
+}
diff --git a/backend/app/Controller/Api/V1/SkuOriginController.php b/backend/app/Controller/Api/V1/SkuOriginController.php
new file mode 100644
index 0000000..4c35180
--- /dev/null
+++ b/backend/app/Controller/Api/V1/SkuOriginController.php
@@ -0,0 +1,450 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Controller\Api\V1;
+
+use App\Controller\AbstractController;
+use App\Middleware\AuthMiddleware;
+use App\Middleware\PermissionMiddleware;
+use App\Model\SkuOrigin;
+use App\Service\OperationLogService;
+use App\Service\SkuService;
+use Hyperf\HttpServer\Annotation\Controller;
+use Hyperf\HttpServer\Annotation\Middleware;
+use Hyperf\HttpServer\Annotation\RequestMapping;
+use OpenApi\Attributes as OA;
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * 客户内部 SKU 管理接口
+ */
+#[OA\Tag(name: 'SkuOrigins', description: '客户内部 SKU 管理')]
+#[Controller(prefix: "/api/v1/sku-origins")]
+#[Middleware(AuthMiddleware::class)]
+#[Middleware(PermissionMiddleware::class)]
+class SkuOriginController extends AbstractController
+{
+    public function __construct(
+        protected readonly SkuService $skuService,
+    ) {}
+
+    /**
+     * SKU 列表
+     */
+    #[OA\Get(
+        path: '/sku-origins',
+        summary: '客户内部 SKU 列表',
+        description: '获取客户内部 SKU 列表，支持分页和筛选',
+        security: [['bearerAuth' => []]],
+        tags: ['SkuOrigins'],
+        parameters: [
+            new OA\Parameter(name: 'page', in: 'query', required: false, schema: new OA\Schema(type: 'integer', default: 1)),
+            new OA\Parameter(name: 'per_page', in: 'query', required: false, schema: new OA\Schema(type: 'integer', default: 15, maximum: 100)),
+            new OA\Parameter(name: 'company_id', in: 'query', required: false, description: '公司 ID 精确筛选', schema: new OA\Schema(type: 'integer')),
+            new OA\Parameter(name: 'sku', in: 'query', required: false, description: 'SKU 编码模糊搜索', schema: new OA\Schema(type: 'string')),
+            new OA\Parameter(name: 'name', in: 'query', required: false, description: '产品名称模糊搜索', schema: new OA\Schema(type: 'string')),
+            new OA\Parameter(name: 'barcode', in: 'query', required: false, description: '条形码模糊搜索', schema: new OA\Schema(type: 'string')),
+        ],
+        responses: [
+            new OA\Response(
+                response: 200,
+                description: '获取成功',
+                content: new OA\JsonContent(properties: [
+                    new OA\Property(property: 'code', type: 'integer', example: 0),
+                    new OA\Property(property: 'message', type: 'string', example: '获取成功'),
+                    new OA\Property(property: 'data', properties: [
+                        new OA\Property(property: 'items', type: 'array', items: new OA\Items(ref: '#/components/schemas/SkuOrigin')),
+                        new OA\Property(property: 'total', type: 'integer', example: 100),
+                        new OA\Property(property: 'page', type: 'integer', example: 1),
+                        new OA\Property(property: 'per_page', type: 'integer', example: 15),
+                    ], type: 'object'),
+                ])
+            ),
+            new OA\Response(response: 401, description: '未认证', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+            new OA\Response(response: 403, description: '无权限', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+        ]
+    )]
+    #[RequestMapping(path: "", methods: "GET")]
+    public function index(): array
+    {
+        $query = SkuOrigin::query()->select([
+            'id', 'company_id', 'sku', 'barcode', 'name', 'label', 'hs', 'created_at', 'updated_at',
+        ]);
+
+        // DataScope 过滤
+        $this->applyDataScope($query);
+
+        // 筛选条件
+        $company_id = $this->request->input('company_id');
+        if ($company_id !== null && $company_id !== '') {
+            $query->where('company_id', (int) $company_id);
+        }
+
+        $sku = $this->request->input('sku');
+        if ($sku !== null && $sku !== '') {
+            $query->where('sku', 'ilike', "%{$sku}%");
+        }
+
+        $name = $this->request->input('name');
+        if ($name !== null && $name !== '') {
+            $query->where(function ($q) use ($name): void {
+                $q->where('name', 'ilike', "%{$name}%")
+                    ->orWhere('label', 'ilike', "%{$name}%");
+            });
+        }
+
+        $barcode = $this->request->input('barcode');
+        if ($barcode !== null && $barcode !== '') {
+            $query->where('barcode', 'ilike', "%{$barcode}%");
+        }
+
+        $query->orderBy('created_at', 'desc');
+
+        // 分页
+        $per_page = min(max((int) $this->request->input('per_page', 15), 1), 100);
+        $page = max((int) $this->request->input('page', 1), 1);
+
+        $total = $query->count();
+        $items = $query->offset(($page - 1) * $per_page)->limit($per_page)->get();
+
+        return [
+            'code' => 0,
+            'message' => '获取成功',
+            'data' => [
+                'items' => $items,
+                'total' => $total,
+                'page' => $page,
+                'per_page' => $per_page,
+            ],
+        ];
+    }
+
+    /**
+     * SKU 详情
+     */
+    #[OA\Get(
+        path: '/sku-origins/{id}',
+        summary: '客户内部 SKU 详情',
+        security: [['bearerAuth' => []]],
+        tags: ['SkuOrigins'],
+        parameters: [
+            new OA\Parameter(name: 'id', in: 'path', required: true, schema: new OA\Schema(type: 'integer')),
+        ],
+        responses: [
+            new OA\Response(
+                response: 200,
+                description: '获取成功',
+                content: new OA\JsonContent(properties: [
+                    new OA\Property(property: 'code', type: 'integer', example: 0),
+                    new OA\Property(property: 'message', type: 'string', example: '获取成功'),
+                    new OA\Property(property: 'data', ref: '#/components/schemas/SkuOrigin'),
+                ])
+            ),
+            new OA\Response(response: 404, description: '数据不存在', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+        ]
+    )]
+    #[RequestMapping(path: "{id}", methods: "GET")]
+    public function show(int $id): ResponseInterface|array
+    {
+        $query = SkuOrigin::query();
+        $this->applyDataScope($query);
+        $record = $query->where('id', $id)->first();
+
+        if (!$record) {
+            return $this->response->json([
+                'code' => 404,
+                'message' => '数据不存在',
+            ])->withStatus(404);
+        }
+
+        return [
+            'code' => 0,
+            'message' => '获取成功',
+            'data' => $record,
+        ];
+    }
+
+    /**
+     * 创建 SKU
+     */
+    #[OA\Post(
+        path: '/sku-origins',
+        summary: '创建客户内部 SKU',
+        security: [['bearerAuth' => []]],
+        tags: ['SkuOrigins'],
+        requestBody: new OA\RequestBody(
+            required: true,
+            content: new OA\JsonContent(
+                required: ['company_id', 'sku', 'barcode', 'name'],
+                properties: [
+                    new OA\Property(property: 'company_id', type: 'integer', example: 3),
+                    new OA\Property(property: 'sku', type: 'string', example: '0032'),
+                    new OA\Property(property: 'barcode', type: 'string', example: '6901234567890'),
+                    new OA\Property(property: 'name', type: 'string', example: 'Running Shoes Model A'),
+                    new OA\Property(property: 'label', type: 'string', nullable: true, example: '跑步鞋 A 款'),
+                    new OA\Property(property: 'hs', type: 'string', nullable: true, example: '6403990090'),
+                    new OA\Property(property: 'ledger', type: 'string', nullable: true),
+                    new OA\Property(property: 'ext', type: 'object', nullable: true),
+                ]
+            )
+        ),
+        responses: [
+            new OA\Response(
+                response: 201,
+                description: '创建成功',
+                content: new OA\JsonContent(properties: [
+                    new OA\Property(property: 'code', type: 'integer', example: 0),
+                    new OA\Property(property: 'message', type: 'string', example: '创建成功'),
+                    new OA\Property(property: 'data', ref: '#/components/schemas/SkuOrigin'),
+                ])
+            ),
+            new OA\Response(response: 422, description: '参数校验失败', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+        ]
+    )]
+    #[RequestMapping(path: "", methods: "POST")]
+    public function store(): ResponseInterface|array
+    {
+        $data = $this->request->all();
+
+        // 参数校验
+        $required_fields = ['company_id', 'sku', 'barcode', 'name'];
+        foreach ($required_fields as $field) {
+            if (!isset($data[$field]) || $data[$field] === '') {
+                return $this->response->json([
+                    'code' => 422,
+                    'message' => "缺少必填字段: {$field}",
+                ])->withStatus(422);
+            }
+        }
+
+        // 唯一性校验 (company_id + sku)
+        $exists = SkuOrigin::query()
+            ->where('company_id', (int) $data['company_id'])
+            ->where('sku', $data['sku'])
+            ->exists();
+
+        if ($exists) {
+            return $this->response->json([
+                'code' => 422,
+                'message' => "该公司下 SKU '{$data['sku']}' 已存在",
+            ])->withStatus(422);
+        }
+
+        $record = SkuOrigin::query()->create([
+            'company_id' => (int) $data['company_id'],
+            'sku' => $data['sku'],
+            'hs' => $data['hs'] ?? null,
+            'barcode' => $data['barcode'],
+            'name' => $data['name'],
+            'label' => $data['label'] ?? null,
+            'ledger' => $data['ledger'] ?? null,
+            'ext' => $data['ext'] ?? null,
+        ]);
+
+        // 记录操作日志
+        $user_id = OperationLogService::getCurrentUserId();
+        if ($user_id) {
+            OperationLogService::log(
+                $user_id,
+                'create',
+                'sku_origin',
+                $record->id,
+                "创建内部 SKU: {$record->sku}",
+                ip: $this->request->getHeaderLine('x-real-ip') ?: null,
+            );
+        }
+
+        return $this->response->json([
+            'code' => 0,
+            'message' => '创建成功',
+            'data' => $record,
+        ])->withStatus(201);
+    }
+
+    /**
+     * 更新 SKU
+     */
+    #[OA\Put(
+        path: '/sku-origins/{id}',
+        summary: '更新客户内部 SKU',
+        security: [['bearerAuth' => []]],
+        tags: ['SkuOrigins'],
+        parameters: [
+            new OA\Parameter(name: 'id', in: 'path', required: true, schema: new OA\Schema(type: 'integer')),
+        ],
+        requestBody: new OA\RequestBody(
+            required: true,
+            content: new OA\JsonContent(properties: [
+                new OA\Property(property: 'sku', type: 'string'),
+                new OA\Property(property: 'barcode', type: 'string'),
+                new OA\Property(property: 'name', type: 'string'),
+                new OA\Property(property: 'label', type: 'string', nullable: true),
+                new OA\Property(property: 'hs', type: 'string', nullable: true),
+                new OA\Property(property: 'ledger', type: 'string', nullable: true),
+                new OA\Property(property: 'ext', type: 'object', nullable: true),
+            ])
+        ),
+        responses: [
+            new OA\Response(
+                response: 200,
+                description: '更新成功',
+                content: new OA\JsonContent(properties: [
+                    new OA\Property(property: 'code', type: 'integer', example: 0),
+                    new OA\Property(property: 'message', type: 'string', example: '更新成功'),
+                    new OA\Property(property: 'data', ref: '#/components/schemas/SkuOrigin'),
+                ])
+            ),
+            new OA\Response(response: 404, description: '数据不存在', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+            new OA\Response(response: 422, description: '参数校验失败', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+        ]
+    )]
+    #[RequestMapping(path: "{id}", methods: "PUT")]
+    public function update(int $id): ResponseInterface|array
+    {
+        $query = SkuOrigin::query();
+        $this->applyDataScope($query);
+        $record = $query->where('id', $id)->first();
+
+        if (!$record) {
+            return $this->response->json([
+                'code' => 404,
+                'message' => '数据不存在',
+            ])->withStatus(404);
+        }
+
+        $data = $this->request->all();
+        $allowed_fields = ['sku', 'barcode', 'name', 'label', 'hs', 'ledger', 'ext'];
+        $update_data = array_intersect_key($data, array_flip($allowed_fields));
+
+        // 如果修改了 sku，检查唯一性
+        if (isset($update_data['sku']) && $update_data['sku'] !== $record->sku) {
+            $exists = SkuOrigin::query()
+                ->where('company_id', $record->company_id)
+                ->where('sku', $update_data['sku'])
+                ->where('id', '!=', $id)
+                ->exists();
+
+            if ($exists) {
+                return $this->response->json([
+                    'code' => 422,
+                    'message' => "该公司下 SKU '{$update_data['sku']}' 已存在",
+                ])->withStatus(422);
+            }
+        }
+
+        $record->update($update_data);
+
+        $user_id = OperationLogService::getCurrentUserId();
+        if ($user_id) {
+            OperationLogService::log(
+                $user_id,
+                'update',
+                'sku_origin',
+                $record->id,
+                "更新内部 SKU: {$record->sku}",
+                detail: ['updated_fields' => array_keys($update_data)],
+                ip: $this->request->getHeaderLine('x-real-ip') ?: null,
+            );
+        }
+
+        return [
+            'code' => 0,
+            'message' => '更新成功',
+            'data' => $record->fresh(),
+        ];
+    }
+
+    /**
+     * 删除 SKU
+     */
+    #[OA\Delete(
+        path: '/sku-origins/{id}',
+        summary: '删除客户内部 SKU',
+        description: '删除前检查是否有映射引用，有引用时禁止删除',
+        security: [['bearerAuth' => []]],
+        tags: ['SkuOrigins'],
+        parameters: [
+            new OA\Parameter(name: 'id', in: 'path', required: true, schema: new OA\Schema(type: 'integer')),
+        ],
+        responses: [
+            new OA\Response(
+                response: 200,
+                description: '删除成功',
+                content: new OA\JsonContent(properties: [
+                    new OA\Property(property: 'code', type: 'integer', example: 0),
+                    new OA\Property(property: 'message', type: 'string', example: '删除成功'),
+                ])
+            ),
+            new OA\Response(response: 404, description: '数据不存在', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+            new OA\Response(response: 409, description: '存在映射引用', content: new OA\JsonContent(ref: '#/components/schemas/ErrorResponse')),
+        ]
+    )]
+    #[RequestMapping(path: "{id}", methods: "DELETE")]
+    public function destroy(int $id): ResponseInterface|array
+    {
+        $query = SkuOrigin::query();
+        $this->applyDataScope($query);
+        $record = $query->where('id', $id)->first();
+
+        if (!$record) {
+            return $this->response->json([
+                'code' => 404,
+                'message' => '数据不存在',
+            ])->withStatus(404);
+        }
+
+        // 检查映射引用
+        if ($this->skuService->hasReferences($id)) {
+            return $this->response->json([
+                'code' => 409,
+                'message' => '该 SKU 存在映射引用，请先删除相关映射记录',
+            ])->withStatus(409);
+        }
+
+        $sku_value = $record->sku;
+        $record->delete();
+
+        $user_id = OperationLogService::getCurrentUserId();
+        if ($user_id) {
+            OperationLogService::log(
+                $user_id,
+                'delete',
+                'sku_origin',
+                $id,
+                "删除内部 SKU: {$sku_value}",
+                ip: $this->request->getHeaderLine('x-real-ip') ?: null,
+            );
+        }
+
+        return [
+            'code' => 0,
+            'message' => '删除成功',
+        ];
+    }
+
+    /**
+     * DataScope 过滤（基于 company_id）
+     */
+    private function applyDataScope(\Hyperf\Database\Model\Builder $query): void
+    {
+        $scope_type = $this->request->getAttribute('scope_type');
+        $scope_ids = $this->request->getAttribute('scope_ids', []);
+
+        if ($scope_type === 'store') {
+            $company_ids = \App\Model\Store::query()
+                ->whereIn('id', $scope_ids)
+                ->distinct()
+                ->pluck('company_id')
+                ->toArray();
+            $query->whereIn('company_id', $company_ids);
+        } elseif ($scope_type === 'platform') {
+            $company_ids = \App\Model\Store::query()
+                ->whereIn('platform_id', $scope_ids)
+                ->distinct()
+                ->pluck('company_id')
+                ->toArray();
+            $query->whereIn('company_id', $company_ids);
+        }
+    }
+}
diff --git a/backend/app/Model/SkuMapping.php b/backend/app/Model/SkuMapping.php
new file mode 100644
index 0000000..5467b9d
--- /dev/null
+++ b/backend/app/Model/SkuMapping.php
@@ -0,0 +1,105 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Model;
+
+use Hyperf\Database\Model\Relations\BelongsTo;
+use Hyperf\DbConnection\Model\Model;
+use OpenApi\Attributes as OA;
+
+/**
+ * @property int $id 主键
+ * @property int $company_id 公司 ID
+ * @property int $platform_id 平台 ID
+ * @property string $platform_product_id 平台商品 ID
+ * @property string $origin_sku 客户侧匹配的 SKU 编码
+ * @property int|null $origin_sku_id 关联 skus_origin.id
+ * @property string|null $platform_outer_sku 平台侧使用的 SKU 编码
+ * @property string|null $generation_strategy 生成策略记录
+ * @property int|null $store_id 店铺 ID
+ * @property int|null $warehouse_id 仓库 ID
+ * @property boolean $enabled 是否启用
+ * @property string|null $note 备注
+ * @property \Carbon\Carbon $created_at
+ * @property \Carbon\Carbon $updated_at
+ */
+#[OA\Schema(
+    schema: 'SkuMapping',
+    description: 'SKU 平台映射',
+    properties: [
+        new OA\Property(property: 'id', type: 'integer', example: 1),
+        new OA\Property(property: 'company_id', type: 'integer', example: 3),
+        new OA\Property(property: 'platform_id', type: 'integer', example: 1),
+        new OA\Property(property: 'platform_product_id', type: 'string', example: 'ITEM-001'),
+        new OA\Property(property: 'origin_sku', type: 'string', example: '0032'),
+        new OA\Property(property: 'origin_sku_id', type: 'integer', nullable: true, example: 1),
+        new OA\Property(property: 'platform_outer_sku', type: 'string', nullable: true, example: 'C03_0032'),
+        new OA\Property(property: 'generation_strategy', type: 'string', nullable: true, example: 'prefix:C03'),
+        new OA\Property(property: 'store_id', type: 'integer', nullable: true, example: 101),
+        new OA\Property(property: 'warehouse_id', type: 'integer', nullable: true, example: 1),
+        new OA\Property(property: 'enabled', type: 'boolean', example: true),
+        new OA\Property(property: 'note', type: 'string', nullable: true, example: '用于 Shopee 马来站'),
+        new OA\Property(property: 'created_at', type: 'string', format: 'date-time'),
+        new OA\Property(property: 'updated_at', type: 'string', format: 'date-time'),
+    ]
+)]
+class SkuMapping extends Model
+{
+    /**
+     * The table associated with the model.
+     */
+    protected ?string $table = 'skus_mapping';
+
+    /**
+     * The attributes that are mass assignable.
+     */
+    protected array $fillable = [
+        'company_id',
+        'platform_id',
+        'platform_product_id',
+        'origin_sku',
+        'origin_sku_id',
+        'platform_outer_sku',
+        'generation_strategy',
+        'store_id',
+        'warehouse_id',
+        'enabled',
+        'note',
+    ];
+
+    /**
+     * The attributes that should be cast to native types.
+     */
+    protected array $casts = [
+        'id' => 'integer',
+        'company_id' => 'integer',
+        'platform_id' => 'integer',
+        'origin_sku_id' => 'integer',
+        'store_id' => 'integer',
+        'warehouse_id' => 'integer',
+        'enabled' => 'boolean',
+        'created_at' => 'datetime',
+        'updated_at' => 'datetime',
+    ];
+
+    public function company(): BelongsTo
+    {
+        return $this->belongsTo(Company::class, 'company_id');
+    }
+
+    public function platform(): BelongsTo
+    {
+        return $this->belongsTo(Platform::class, 'platform_id');
+    }
+
+    public function store(): BelongsTo
+    {
+        return $this->belongsTo(Store::class, 'store_id');
+    }
+
+    public function skuOrigin(): BelongsTo
+    {
+        return $this->belongsTo(SkuOrigin::class, 'origin_sku_id');
+    }
+}
diff --git a/backend/app/Model/SkuOrigin.php b/backend/app/Model/SkuOrigin.php
new file mode 100644
index 0000000..dbe3d11
--- /dev/null
+++ b/backend/app/Model/SkuOrigin.php
@@ -0,0 +1,83 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Model;
+
+use Hyperf\Database\Model\Relations\BelongsTo;
+use Hyperf\Database\Model\Relations\HasMany;
+use Hyperf\DbConnection\Model\Model;
+use OpenApi\Attributes as OA;
+
+/**
+ * @property int $id 主键
+ * @property int $company_id 公司 ID
+ * @property string $sku 客户侧提供的 SKU
+ * @property string|null $hs 海关商品分类编码
+ * @property string $barcode 条形码/GTIN
+ * @property string $name 产品名称（英文）
+ * @property string|null $label 产品名称（中文）
+ * @property string|null $ledger 账册与批次备注
+ * @property array|null $ext 扩展字段
+ * @property \Carbon\Carbon $created_at
+ * @property \Carbon\Carbon $updated_at
+ */
+#[OA\Schema(
+    schema: 'SkuOrigin',
+    description: '客户内部 SKU',
+    properties: [
+        new OA\Property(property: 'id', type: 'integer', example: 1),
+        new OA\Property(property: 'company_id', type: 'integer', example: 3),
+        new OA\Property(property: 'sku', type: 'string', example: '0032'),
+        new OA\Property(property: 'hs', type: 'string', nullable: true, example: '6403990090'),
+        new OA\Property(property: 'barcode', type: 'string', example: '6901234567890'),
+        new OA\Property(property: 'name', type: 'string', example: 'Running Shoes Model A'),
+        new OA\Property(property: 'label', type: 'string', nullable: true, example: '跑步鞋 A 款'),
+        new OA\Property(property: 'ledger', type: 'string', nullable: true, example: '批次 2026-Q1'),
+        new OA\Property(property: 'ext', type: 'object', nullable: true, description: '扩展字段'),
+        new OA\Property(property: 'created_at', type: 'string', format: 'date-time'),
+        new OA\Property(property: 'updated_at', type: 'string', format: 'date-time'),
+    ]
+)]
+class SkuOrigin extends Model
+{
+    /**
+     * The table associated with the model.
+     */
+    protected ?string $table = 'skus_origin';
+
+    /**
+     * The attributes that are mass assignable.
+     */
+    protected array $fillable = [
+        'company_id',
+        'sku',
+        'hs',
+        'barcode',
+        'name',
+        'label',
+        'ledger',
+        'ext',
+    ];
+
+    /**
+     * The attributes that should be cast to native types.
+     */
+    protected array $casts = [
+        'id' => 'integer',
+        'company_id' => 'integer',
+        'ext' => 'json',
+        'created_at' => 'datetime',
+        'updated_at' => 'datetime',
+    ];
+
+    public function company(): BelongsTo
+    {
+        return $this->belongsTo(Company::class, 'company_id');
+    }
+
+    public function mappings(): HasMany
+    {
+        return $this->hasMany(SkuMapping::class, 'origin_sku_id');
+    }
+}
diff --git a/backend/app/Service/SkuService.php b/backend/app/Service/SkuService.php
new file mode 100644
index 0000000..1b4a925
--- /dev/null
+++ b/backend/app/Service/SkuService.php
@@ -0,0 +1,130 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Service;
+
+use App\Model\SkuMapping;
+use App\Model\SkuOrigin;
+use Hyperf\Stringable\Str;
+
+/**
+ * SKU 业务逻辑服务
+ *
+ * 负责 platform_outer_sku 的自动生成、重复检测等业务逻辑
+ */
+class SkuService
+{
+    /**
+     * 生成 platform_outer_sku
+     *
+     * @param string $strategy 生成策略：prefix | prefix_random | manual
+     * @param string $origin_sku 原始 SKU 编码
+     * @param string $prefix 前缀
+     * @param int $random_length 随机部分长度（仅 prefix_random 模式）
+     * @param string|null $manual_value 手动输入值（仅 manual 模式）
+     * @return string 生成的 platform_outer_sku
+     */
+    public function generatePlatformOuterSku(
+        string $strategy,
+        string $origin_sku,
+        string $prefix = '',
+        int $random_length = 4,
+        ?string $manual_value = null,
+    ): string {
+        return match ($strategy) {
+            'prefix' => $this->generatePrefixSku($prefix, $origin_sku),
+            'prefix_random' => $this->generatePrefixRandomSku($prefix, $random_length),
+            'manual' => $manual_value ?? '',
+            default => throw new \InvalidArgumentException("不支持的生成策略: {$strategy}"),
+        };
+    }
+
+    /**
+     * 前缀模式：{prefix}_{origin_sku}
+     */
+    private function generatePrefixSku(string $prefix, string $origin_sku): string
+    {
+        if ($prefix === '') {
+            return $origin_sku;
+        }
+        return "{$prefix}_{$origin_sku}";
+    }
+
+    /**
+     * 前缀+随机模式：{prefix}_{random_string}
+     */
+    private function generatePrefixRandomSku(string $prefix, int $random_length): string
+    {
+        $random_part = Str::upper(Str::random($random_length));
+        if ($prefix === '') {
+            return $random_part;
+        }
+        return "{$prefix}_{$random_part}";
+    }
+
+    /**
+     * 构建生成策略记录字符串
+     */
+    public function buildStrategyRecord(string $strategy, string $prefix = '', int $random_length = 4): string
+    {
+        return match ($strategy) {
+            'prefix' => "prefix:{$prefix}",
+            'prefix_random' => "prefix_random:{$prefix}:{$random_length}",
+            'manual' => 'manual',
+            default => $strategy,
+        };
+    }
+
+    /**
+     * 检查某个 origin_sku 在指定平台下是否已存在映射记录
+     *
+     * @return array{has_duplicate: bool, existing_mappings: array, message: string}
+     */
+    public function checkDuplicate(int $origin_sku_id, int $platform_id): array
+    {
+        $existing = SkuMapping::query()
+            ->where('origin_sku_id', $origin_sku_id)
+            ->where('platform_id', $platform_id)
+            ->where('enabled', true)
+            ->get(['id', 'store_id', 'platform_outer_sku', 'note']);
+
+        $has_duplicate = $existing->isNotEmpty();
+
+        $message = $has_duplicate
+            ? "该 origin_sku 在当前平台下已有 {$existing->count()} 条映射记录，可直接复用已有的 platform_outer_sku"
+            : '';
+
+        return [
+            'has_duplicate' => $has_duplicate,
+            'existing_mappings' => $existing->toArray(),
+            'message' => $message,
+        ];
+    }
+
+    /**
+     * 检查 origin_sku 是否有映射引用（用于删除前检查）
+     */
+    public function hasReferences(int $origin_sku_id): bool
+    {
+        return SkuMapping::query()
+            ->where('origin_sku_id', $origin_sku_id)
+            ->exists();
+    }
+
+    /**
+     * 检查 platform_outer_sku 在指定平台内是否唯一
+     */
+    public function isPlatformOuterSkuUnique(string $platform_outer_sku, int $platform_id, ?int $exclude_id = null): bool
+    {
+        $query = SkuMapping::query()
+            ->where('platform_outer_sku', $platform_outer_sku)
+            ->where('platform_id', $platform_id);
+
+        if ($exclude_id !== null) {
+            $query->where('id', '!=', $exclude_id);
+        }
+
+        return !$query->exists();
+    }
+}
diff --git a/backend/migrations/2026_04_14_100000_extend_skus_mapping_table.php b/backend/migrations/2026_04_14_100000_extend_skus_mapping_table.php
new file mode 100644
index 0000000..ff65501
--- /dev/null
+++ b/backend/migrations/2026_04_14_100000_extend_skus_mapping_table.php
@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+use Hyperf\Database\Schema\Schema;
+use Hyperf\Database\Schema\Blueprint;
+use Hyperf\Database\Migrations\Migration;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('skus_mapping', function (Blueprint $table) {
+            $table->bigInteger('origin_sku_id')->nullable()->comment('关联 skus_origin.id（FK）');
+            $table->text('platform_outer_sku')->nullable()->comment('平台侧使用的 SKU 编码');
+            $table->text('generation_strategy')->nullable()->comment('生成策略记录，如 prefix:C03、prefix_random:C03:4、manual');
+
+            $table->index(['company_id', 'origin_sku_id', 'platform_id'], 'idx_company_origin_platform');
+            $table->index(['platform_outer_sku', 'platform_id'], 'idx_outer_sku_platform');
+
+            $table->foreign('origin_sku_id')
+                ->references('id')
+                ->on('skus_origin')
+                ->onDelete('restrict')
+                ->onUpdate('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('skus_mapping', function (Blueprint $table) {
+            $table->dropForeign(['origin_sku_id']);
+            $table->dropIndex('idx_company_origin_platform');
+            $table->dropIndex('idx_outer_sku_platform');
+            $table->dropColumn(['origin_sku_id', 'platform_outer_sku', 'generation_strategy']);
+        });
+    }
+};
diff --git a/backend/test/Cases/Unit/Service/SkuServiceTest.php b/backend/test/Cases/Unit/Service/SkuServiceTest.php
new file mode 100644
index 0000000..b794cb5
--- /dev/null
+++ b/backend/test/Cases/Unit/Service/SkuServiceTest.php
@@ -0,0 +1,127 @@
+<?php
+
+declare(strict_types=1);
+
+namespace HyperfTest\Cases\Unit\Service;
+
+use App\Service\SkuService;
+use HyperfTest\TestCase;
+
+/**
+ * SkuService 单元测试
+ *
+ * 验证 SKU 自动生成策略和辅助方法
+ *
+ * @internal
+ * @coversNothing
+ */
+class SkuServiceTest extends TestCase
+{
+    private SkuService $service;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+        $this->service = new SkuService();
+    }
+
+    public function test_generate_prefix_sku(): void
+    {
+        $result = $this->service->generatePlatformOuterSku(
+            strategy: 'prefix',
+            origin_sku: '0032',
+            prefix: 'C03',
+        );
+
+        $this->assertSame('C03_0032', $result);
+    }
+
+    public function test_generate_prefix_sku_without_prefix(): void
+    {
+        $result = $this->service->generatePlatformOuterSku(
+            strategy: 'prefix',
+            origin_sku: '0032',
+            prefix: '',
+        );
+
+        $this->assertSame('0032', $result);
+    }
+
+    public function test_generate_prefix_random_sku(): void
+    {
+        $result = $this->service->generatePlatformOuterSku(
+            strategy: 'prefix_random',
+            origin_sku: '0032',
+            prefix: 'C03',
+            random_length: 4,
+        );
+
+        $this->assertStringStartsWith('C03_', $result);
+        // prefix(3) + _(1) + random(4) = 8
+        $this->assertSame(8, strlen($result));
+    }
+
+    public function test_generate_prefix_random_sku_without_prefix(): void
+    {
+        $result = $this->service->generatePlatformOuterSku(
+            strategy: 'prefix_random',
+            origin_sku: '0032',
+            prefix: '',
+            random_length: 6,
+        );
+
+        // 纯随机部分，6 个字符
+        $this->assertSame(6, strlen($result));
+    }
+
+    public function test_generate_manual_sku(): void
+    {
+        $result = $this->service->generatePlatformOuterSku(
+            strategy: 'manual',
+            origin_sku: '0032',
+            manual_value: 'CUSTOM_SKU_001',
+        );
+
+        $this->assertSame('CUSTOM_SKU_001', $result);
+    }
+
+    public function test_generate_manual_sku_with_null_value(): void
+    {
+        $result = $this->service->generatePlatformOuterSku(
+            strategy: 'manual',
+            origin_sku: '0032',
+            manual_value: null,
+        );
+
+        $this->assertSame('', $result);
+    }
+
+    public function test_generate_invalid_strategy_throws_exception(): void
+    {
+        $this->expectException(\InvalidArgumentException::class);
+        $this->expectExceptionMessage('不支持的生成策略: unknown');
+
+        $this->service->generatePlatformOuterSku(
+            strategy: 'unknown',
+            origin_sku: '0032',
+        );
+    }
+
+    public function test_build_strategy_record_prefix(): void
+    {
+        $result = $this->service->buildStrategyRecord('prefix', 'C03');
+        $this->assertSame('prefix:C03', $result);
+    }
+
+    public function test_build_strategy_record_prefix_random(): void
+    {
+        $result = $this->service->buildStrategyRecord('prefix_random', 'C03', 4);
+        $this->assertSame('prefix_random:C03:4', $result);
+    }
+
+    public function test_build_strategy_record_manual(): void
+    {
+        $result = $this->service->buildStrategyRecord('manual');
+        $this->assertSame('manual', $result);
+    }
+}
diff --git a/frontend/src/components/ApiKeyPanel.vue b/frontend/src/components/ApiKeyPanel.vue
new file mode 100644
index 0000000..7e831da
--- /dev/null
+++ b/frontend/src/components/ApiKeyPanel.vue
@@ -0,0 +1,291 @@
+<script setup lang="ts">
+import { useApiKeyStore, MAX_KEYS_PER_USER } from '@/stores/api-key'
+import { useUserStore } from '@/stores/user'
+import {
+  PlusOutlined,
+  CopyOutlined,
+  DeleteOutlined,
+} from '@ant-design/icons-vue'
+import type { ApiKeyRecord } from '@/types/api'
+import dayjs from 'dayjs'
+
+const apiKeyStore = useApiKeyStore()
+const userStore = useUserStore()
+
+const apiKeyEnabled = computed(() => userStore.user?.api_key_enabled ?? false)
+const hasKeys = computed(() => apiKeyStore.keys.length > 0)
+
+// Create modal
+const createModalOpen = ref(false)
+const createLoading = ref(false)
+const createForm = reactive({
+  name: '',
+  expires_at: null as string | null,
+})
+
+// Plain key modal
+const plainKeyModalOpen = ref(false)
+const plainKey = ref('')
+
+function isExpired(record: ApiKeyRecord): boolean {
+  return !!record.expires_at && dayjs(record.expires_at).isBefore(dayjs())
+}
+
+function formatTime(time: string | null): string {
+  if (!time) return '-'
+  return time.replace('T', ' ').substring(0, 19)
+}
+
+const columns = [
+  { title: '名称', dataIndex: 'name', width: 150 },
+  { title: '前缀', dataIndex: 'key_prefix', width: 120 },
+  { title: '创建时间', dataIndex: 'created_at', width: 170 },
+  { title: '过期时间', key: 'expires_at', width: 170 },
+  { title: '最后使用', dataIndex: 'last_used_at', width: 170 },
+  { title: '状态', key: 'enabled', width: 100 },
+  { title: '操作', key: 'action', width: 80 },
+]
+
+const readonlyColumns = columns.filter((c) => c.key !== 'enabled' && c.key !== 'action')
+
+function showCreateModal() {
+  createForm.name = ''
+  createForm.expires_at = null
+  createModalOpen.value = true
+}
+
+async function handleCreate() {
+  if (!createForm.name.trim()) {
+    message.warning('请输入 API Key 名称')
+    return
+  }
+  createLoading.value = true
+  try {
+    const result = await apiKeyStore.createKey({
+      name: createForm.name.trim(),
+      expires_at: createForm.expires_at || undefined,
+    })
+    if (result) {
+      createModalOpen.value = false
+      plainKey.value = result.plain_key
+      plainKeyModalOpen.value = true
+    }
+  } finally {
+    createLoading.value = false
+  }
+}
+
+async function handleToggle(record: ApiKeyRecord, checked: boolean) {
+  await apiKeyStore.toggleKey(record.id, checked)
+}
+
+async function handleDelete(record: ApiKeyRecord) {
+  await apiKeyStore.deleteKey(record.id)
+}
+
+function handleCopyKey() {
+  navigator.clipboard.writeText(plainKey.value).then(() => {
+    message.success('已复制')
+  })
+}
+
+function handlePlainKeyModalClose() {
+  plainKey.value = ''
+  plainKeyModalOpen.value = false
+}
+
+onMounted(() => {
+  apiKeyStore.fetchMyKeys()
+})
+</script>
+
+<template>
+  <!-- Mode 3: api_key_enabled=false 且无 Key -->
+  <a-empty
+    v-if="!apiKeyEnabled && !hasKeys"
+    description="API Key 功能未启用，请联系管理员开启"
+  />
+
+  <!-- Mode 4: api_key_enabled=false 且有 Key — 警告 + 只读表格 -->
+  <div v-else-if="!apiKeyEnabled && hasKeys">
+    <a-alert
+      type="warning"
+      show-icon
+      class="mb-4"
+      message="API Key 功能已被管理员关闭。您的所有 API Key 当前无法用于认证。已有 Key 不会被删除，功能重新开启后将自动恢复。如需开启，请联系管理员。"
+    />
+    <a-table
+      :columns="readonlyColumns"
+      :data-source="apiKeyStore.keys"
+      :loading="apiKeyStore.loading"
+      :pagination="false"
+      row-key="id"
+      :row-class-name="(record: ApiKeyRecord) => isExpired(record) ? 'expired-row' : ''"
+      size="small"
+    >
+      <template #bodyCell="{ column, record }">
+        <template v-if="column.key === 'expires_at'">
+          <span v-if="!record.expires_at">永不过期</span>
+          <span v-else>
+            <span :class="{ 'text-red-500': isExpired(record) }">
+              {{ formatTime(record.expires_at) }}
+            </span>
+            <a-tag v-if="isExpired(record)" color="red" class="ml-1">已过期</a-tag>
+          </span>
+        </template>
+        <template v-else-if="column.dataIndex === 'key_prefix'">
+          {{ record.key_prefix }}****
+        </template>
+        <template v-else-if="column.dataIndex === 'created_at'">
+          {{ formatTime(record.created_at) }}
+        </template>
+        <template v-else-if="column.dataIndex === 'last_used_at'">
+          {{ record.last_used_at ? formatTime(record.last_used_at) : '从未使用' }}
+        </template>
+      </template>
+    </a-table>
+  </div>
+
+  <!-- Mode 2: api_key_enabled=true 且无 Key — 引导空状态 -->
+  <div v-else-if="apiKeyEnabled && !hasKeys && !apiKeyStore.loading">
+    <a-empty description="还没有 API Key">
+      <a-button type="primary" @click="showCreateModal">
+        <template #icon><PlusOutlined /></template>
+        生成第一个 API Key
+      </a-button>
+    </a-empty>
+  </div>
+
+  <!-- Mode 1: api_key_enabled=true 且有 Key — 完整面板 -->
+  <div v-else-if="apiKeyEnabled">
+    <div class="flex justify-between items-center mb-3">
+      <a-tag>{{ apiKeyStore.keyCount }}/{{ MAX_KEYS_PER_USER }}</a-tag>
+      <a-tooltip
+        v-if="!apiKeyStore.canCreate"
+        title="已达上限，请删除不需要的 Key 后再生成"
+      >
+        <a-button type="primary" disabled>
+          <template #icon><PlusOutlined /></template>
+          生成 API Key
+        </a-button>
+      </a-tooltip>
+      <a-button
+        v-else
+        type="primary"
+        @click="showCreateModal"
+      >
+        <template #icon><PlusOutlined /></template>
+        生成 API Key
+      </a-button>
+    </div>
+
+    <a-table
+      :columns="columns"
+      :data-source="apiKeyStore.keys"
+      :loading="apiKeyStore.loading"
+      :pagination="false"
+      row-key="id"
+      :row-class-name="(record: ApiKeyRecord) => isExpired(record) ? 'expired-row' : ''"
+      size="small"
+    >
+      <template #bodyCell="{ column, record }">
+        <template v-if="column.dataIndex === 'key_prefix'">
+          {{ record.key_prefix }}****
+        </template>
+        <template v-else-if="column.dataIndex === 'created_at'">
+          {{ formatTime(record.created_at) }}
+        </template>
+        <template v-else-if="column.key === 'expires_at'">
+          <span v-if="!record.expires_at">永不过期</span>
+          <span v-else>
+            <span :class="{ 'text-red-500': isExpired(record) }">
+              {{ formatTime(record.expires_at) }}
+            </span>
+            <a-tag v-if="isExpired(record)" color="red" class="ml-1">已过期</a-tag>
+          </span>
+        </template>
+        <template v-else-if="column.dataIndex === 'last_used_at'">
+          {{ record.last_used_at ? formatTime(record.last_used_at) : '从未使用' }}
+        </template>
+        <template v-else-if="column.key === 'enabled'">
+          <a-switch
+            :checked="record.enabled"
+            :disabled="isExpired(record)"
+            size="small"
+            @change="(checked: boolean) => handleToggle(record, checked)"
+          />
+        </template>
+        <template v-else-if="column.key === 'action'">
+          <a-popconfirm
+            title="确定要删除此 API Key 吗？"
+            @confirm="handleDelete(record)"
+          >
+            <a-button type="link" size="small" danger>
+              <template #icon><DeleteOutlined /></template>
+            </a-button>
+          </a-popconfirm>
+        </template>
+      </template>
+    </a-table>
+  </div>
+
+  <!-- Loading state -->
+  <a-spin v-if="apiKeyStore.loading && !hasKeys && apiKeyEnabled" class="mt-4" />
+
+  <!-- Create Modal -->
+  <a-modal
+    v-model:open="createModalOpen"
+    title="生成 API Key"
+    :confirm-loading="createLoading"
+    @ok="handleCreate"
+  >
+    <a-form layout="vertical">
+      <a-form-item label="名称" required>
+        <a-input
+          v-model:value="createForm.name"
+          placeholder="例如：数据同步脚本、监控系统"
+          :maxlength="100"
+          @press-enter="handleCreate"
+        />
+      </a-form-item>
+      <a-form-item label="过期时间">
+        <a-date-picker
+          v-model:value="createForm.expires_at"
+          value-format="YYYY-MM-DD HH:mm:ss"
+          show-time
+          placeholder="留空表示永不过期"
+          style="width: 100%"
+        />
+      </a-form-item>
+    </a-form>
+  </a-modal>
+
+  <!-- Plain Key Modal -->
+  <a-modal
+    :open="plainKeyModalOpen"
+    title="API Key 已生成"
+    :footer="null"
+    :mask-closable="false"
+    @cancel="handlePlainKeyModalClose"
+  >
+    <a-alert
+      type="warning"
+      show-icon
+      class="mb-4"
+      message="此密钥仅显示一次，关闭后无法再次查看。请妥善保存。"
+    />
+    <div class="bg-gray-100 p-3 rounded font-mono text-sm break-all select-all mb-3">
+      {{ plainKey }}
+    </div>
+    <a-button type="primary" block @click="handleCopyKey">
+      <template #icon><CopyOutlined /></template>
+      复制 API Key
+    </a-button>
+  </a-modal>
+</template>
+
+<style scoped>
+:deep(.expired-row) {
+  opacity: 0.5;
+}
+</style>
diff --git a/frontend/src/components/layouts/MainLayout.vue b/frontend/src/components/layouts/MainLayout.vue
index b3ea66c..ee5f62d 100644
--- a/frontend/src/components/layouts/MainLayout.vue
+++ b/frontend/src/components/layouts/MainLayout.vue
@@ -20,6 +20,8 @@ import {
   FileSearchOutlined,
   ApiOutlined,
   HistoryOutlined,
+  BarcodeOutlined,
+  LinkOutlined,
 } from '@ant-design/icons-vue'
 import type { Component } from 'vue'
 
@@ -53,6 +55,7 @@ const initOpenKeys = () => {
   const path = route.path
   if (path.startsWith('/order')) openKeys.value = ['orders-group']
   else if (path.startsWith('/refund')) openKeys.value = ['refunds-group']
+  else if (path.startsWith('/sku-')) openKeys.value = ['sku-group']
   else if (path.startsWith('/logs')) openKeys.value = ['logs-group']
 }
 
@@ -64,6 +67,15 @@ const menuItems: MenuItem[] = [
   { key: '/', icon: DashboardOutlined, label: '首页' },
   { key: '/users', icon: UserOutlined, label: '用户管理', adminOnly: true },
   { key: '/products', icon: ShoppingOutlined, label: '产品管理' },
+  {
+    key: 'sku-group',
+    icon: BarcodeOutlined,
+    label: 'SKU 管理',
+    children: [
+      { key: '/sku-origins', icon: BarcodeOutlined, label: '内部 SKU' },
+      { key: '/sku-mappings', icon: LinkOutlined, label: 'SKU 映射' },
+    ],
+  },
   {
     key: 'orders-group',
     icon: FileTextOutlined,
@@ -126,6 +138,8 @@ const breadcrumbItems = computed(() => {
     '/order-items': '订单子项',
     '/refunds': '退款列表',
     '/refund-items': '退款子项',
+    '/sku-origins': '内部 SKU',
+    '/sku-mappings': 'SKU 映射',
     '/roles': '角色管理',
     '/route-groups': '路由组管理',
     '/mq-status': '队列监控',
diff --git a/frontend/src/pages/sku-mappings/index.vue b/frontend/src/pages/sku-mappings/index.vue
new file mode 100644
index 0000000..69587cf
--- /dev/null
+++ b/frontend/src/pages/sku-mappings/index.vue
@@ -0,0 +1,574 @@
+<script setup lang="ts">
+import {
+  useSkuMappingStore,
+  type SkuMappingForm,
+  type GenerateSkuParams,
+} from '@/stores/sku-mapping'
+import CascadeFilter from '@/components/CascadeFilter.vue'
+import {
+  SearchOutlined,
+  ReloadOutlined,
+  PlusOutlined,
+  EditOutlined,
+  DeleteOutlined,
+  ThunderboltOutlined,
+  QuestionCircleOutlined,
+} from '@ant-design/icons-vue'
+import type { Rule } from 'ant-design-vue/es/form'
+
+const store = useSkuMappingStore()
+
+const columns = [
+  { title: 'ID', dataIndex: 'id', width: 70 },
+  { title: '公司', key: 'company', width: 120 },
+  { title: '平台', key: 'platform', width: 100 },
+  { title: '店铺', key: 'store', width: 140 },
+  { title: '内部 SKU', dataIndex: 'origin_sku', width: 140 },
+  { title: '平台 SKU', dataIndex: 'platform_outer_sku', width: 160 },
+  { title: '平台商品ID', dataIndex: 'platform_product_id', width: 160, ellipsis: true },
+  { title: '状态', key: 'enabled', width: 80 },
+  { title: '更新时间', key: 'updated_at', width: 170 },
+  { title: '操作', key: 'action', width: 200, fixed: 'right' as const },
+]
+
+// Modal state
+const modalVisible = ref(false)
+const modalTitle = ref('新建映射')
+const editingId = ref<number | null>(null)
+const formRef = ref()
+const saving = ref(false)
+
+const defaultForm = (): SkuMappingForm => ({
+  company_id: undefined,
+  platform_id: undefined,
+  store_id: undefined,
+  origin_sku: '',
+  origin_sku_id: undefined,
+  platform_product_id: '',
+  platform_outer_sku: '',
+  generation_strategy: 'prefix',
+  warehouse_id: undefined,
+  enabled: true,
+  note: '',
+})
+
+const form = reactive<SkuMappingForm>(defaultForm())
+
+const rules: Record<string, Rule[]> = {
+  company_id: [{ required: true, message: '请选择公司', trigger: 'change' }],
+  platform_id: [{ required: true, message: '请选择平台', trigger: 'change' }],
+  origin_sku: [{ required: true, message: '请输入内部 SKU', trigger: 'blur' }],
+  platform_outer_sku: [{ required: true, message: '请输入或生成平台 SKU', trigger: 'blur' }],
+}
+
+// Generation modal
+const genModalVisible = ref(false)
+const genLoading = ref(false)
+const genForm = reactive({
+  strategy: 'prefix' as 'prefix' | 'prefix_random' | 'manual',
+  prefix: '',
+  random_length: 4,
+  manual_value: '',
+})
+const genResult = ref('')
+
+// Filtered store options based on cascade
+const filteredStoreOptions = computed(() => {
+  let filtered = store.stores
+  if (form.company_id) {
+    filtered = filtered.filter((s) => s.company_id === form.company_id)
+  }
+  if (form.platform_id) {
+    filtered = filtered.filter((s) => s.platform_id === form.platform_id)
+  }
+  return filtered.map((s) => ({
+    value: s.id,
+    label: s.label && s.label !== 'null' ? s.label : s.name,
+  }))
+})
+
+// Filtered SKU origins by company
+const filteredSkuOrigins = computed(() => {
+  if (!form.company_id) return store.skuOrigins
+  return store.skuOrigins.filter((s) => s.company_id === form.company_id)
+})
+
+onMounted(() => {
+  store.loadLookups()
+  store.loadSkuOrigins()
+  store.fetchItems()
+})
+
+function handleSearch() {
+  store.pagination.page = 1
+  store.fetchItems()
+}
+
+function handleReset() {
+  store.resetFilters()
+  store.fetchItems()
+}
+
+function handlePageChange(page: number, pageSize: number) {
+  store.pagination.page = page
+  store.pagination.per_page = pageSize
+  store.fetchItems()
+}
+
+function formatTime(time: string | null) {
+  if (!time) return '-'
+  return time.replace('T', ' ').substring(0, 16)
+}
+
+function openCreate() {
+  Object.assign(form, defaultForm())
+  editingId.value = null
+  modalTitle.value = '新建映射'
+  modalVisible.value = true
+}
+
+function openEdit(record: SkuMappingForm & { id: number }) {
+  editingId.value = record.id
+  modalTitle.value = '编辑映射'
+  Object.assign(form, {
+    company_id: record.company_id,
+    platform_id: record.platform_id,
+    store_id: record.store_id || undefined,
+    origin_sku: record.origin_sku || '',
+    origin_sku_id: record.origin_sku_id || undefined,
+    platform_product_id: record.platform_product_id || '',
+    platform_outer_sku: record.platform_outer_sku || '',
+    generation_strategy: record.generation_strategy || 'prefix',
+    warehouse_id: record.warehouse_id || undefined,
+    enabled: record.enabled ?? true,
+    note: record.note || '',
+  })
+  modalVisible.value = true
+}
+
+async function handleSubmit() {
+  try {
+    await formRef.value.validate()
+  } catch {
+    return
+  }
+  saving.value = true
+  try {
+    if (editingId.value) {
+      await store.updateItem(editingId.value, { ...form })
+    } else {
+      await store.createItem({ ...form })
+    }
+    modalVisible.value = false
+  } catch (err: unknown) {
+    const msg = err instanceof Error ? err.message : '操作失败'
+    message.error(msg)
+  } finally {
+    saving.value = false
+  }
+}
+
+function handleDelete(record: { id: number; origin_sku: string; platform_outer_sku: string | null }) {
+  Modal.confirm({
+    title: '确认删除',
+    content: `确定删除映射「${record.origin_sku} → ${record.platform_outer_sku || '-'}」？`,
+    okText: '删除',
+    okType: 'danger',
+    cancelText: '取消',
+    async onOk() {
+      try {
+        await store.deleteItem(record.id)
+      } catch (err: unknown) {
+        const msg = err instanceof Error ? err.message : '删除失败'
+        message.error(msg)
+      }
+    },
+  })
+}
+
+function openGenerate() {
+  if (!form.origin_sku_id) {
+    message.warning('请先选择内部 SKU')
+    return
+  }
+  if (!form.platform_id) {
+    message.warning('请先选择平台')
+    return
+  }
+  genForm.strategy = 'prefix'
+  genForm.prefix = ''
+  genForm.random_length = 4
+  genForm.manual_value = ''
+  genResult.value = ''
+  genModalVisible.value = true
+}
+
+async function handleGenerate() {
+  if (genForm.strategy === 'manual' && !genForm.manual_value) {
+    message.warning('请输入手动 SKU 值')
+    return
+  }
+  if ((genForm.strategy === 'prefix' || genForm.strategy === 'prefix_random') && !genForm.prefix) {
+    message.warning('请输入前缀')
+    return
+  }
+  genLoading.value = true
+  try {
+    const params: GenerateSkuParams = {
+      origin_sku_id: form.origin_sku_id!,
+      platform_id: form.platform_id!,
+      strategy: genForm.strategy,
+      prefix: genForm.prefix,
+      random_length: genForm.random_length,
+      manual_value: genForm.manual_value,
+    }
+    const result = await store.generateSku(params)
+    genResult.value = result.generated_sku
+    if (result.has_duplicate) {
+      message.warning(result.message || '该平台已存在相同 SKU 映射')
+    }
+  } catch (err: unknown) {
+    const msg = err instanceof Error ? err.message : '生成失败'
+    message.error(msg)
+  } finally {
+    genLoading.value = false
+  }
+}
+
+function applyGenerated() {
+  if (genResult.value) {
+    form.platform_outer_sku = genResult.value
+    form.generation_strategy = genForm.strategy
+    genModalVisible.value = false
+    message.success('已填入生成的平台 SKU')
+  }
+}
+
+// Watch company change to reload SKU origins
+watch(
+  () => form.company_id,
+  (val) => {
+    store.loadSkuOrigins(val)
+  },
+)
+</script>
+
+<template>
+  <div>
+    <h2 class="text-xl font-semibold mb-4">SKU 映射管理</h2>
+
+    <!-- Filter area -->
+    <a-card class="mb-6">
+      <a-form layout="inline" class="filter-form" @submit.prevent="handleSearch">
+        <a-form-item>
+          <CascadeFilter v-model="store.cascadeValue" />
+        </a-form-item>
+        <a-form-item label="内部 SKU">
+          <a-input
+            v-model:value="store.filters.origin_sku"
+            placeholder="内部 SKU"
+            allow-clear
+            @press-enter="handleSearch"
+          />
+        </a-form-item>
+        <a-form-item label="平台 SKU">
+          <a-input
+            v-model:value="store.filters.platform_outer_sku"
+            placeholder="平台侧 SKU"
+            allow-clear
+            @press-enter="handleSearch"
+          />
+        </a-form-item>
+        <a-form-item label="状态">
+          <a-select
+            v-model:value="store.filters.enabled"
+            placeholder="全部"
+            allow-clear
+            style="width: 100px"
+          >
+            <a-select-option :value="true">启用</a-select-option>
+            <a-select-option :value="false">禁用</a-select-option>
+          </a-select>
+        </a-form-item>
+        <a-form-item>
+          <a-space>
+            <a-button type="primary" html-type="submit">
+              <template #icon><SearchOutlined /></template>
+              搜索
+            </a-button>
+            <a-button @click="handleReset">
+              <template #icon><ReloadOutlined /></template>
+              重置
+            </a-button>
+          </a-space>
+        </a-form-item>
+      </a-form>
+    </a-card>
+
+    <!-- Table -->
+    <a-card>
+      <div class="mb-4 flex justify-between items-center">
+        <span class="text-gray-500">共 {{ store.pagination.total }} 条记录</span>
+        <a-button type="primary" @click="openCreate">
+          <template #icon><PlusOutlined /></template>
+          新建映射
+        </a-button>
+      </div>
+
+      <a-table
+        :columns="columns"
+        :data-source="store.items"
+        :loading="store.loading"
+        :pagination="false"
+        row-key="id"
+        :scroll="{ x: 1400 }"
+      >
+        <template #bodyCell="{ column, record }">
+          <template v-if="column.key === 'company'">
+            {{ store.companyMap.get(record.company_id) || record.company_id }}
+          </template>
+          <template v-else-if="column.key === 'platform'">
+            {{ store.platformMap.get(record.platform_id) || record.platform_id }}
+          </template>
+          <template v-else-if="column.key === 'store'">
+            <template v-if="record.store_id">
+              {{ store.storeMap.get(record.store_id) || record.store_id }}
+            </template>
+            <span v-else class="text-gray-400">平台默认</span>
+          </template>
+          <template v-else-if="column.key === 'enabled'">
+            <a-tag :color="record.enabled ? 'green' : 'default'">
+              {{ record.enabled ? '启用' : '禁用' }}
+            </a-tag>
+          </template>
+          <template v-else-if="column.key === 'updated_at'">
+            {{ formatTime(record.updated_at) }}
+          </template>
+          <template v-else-if="column.key === 'action'">
+            <a-space>
+              <a-button type="link" size="small" @click="openEdit(record)">
+                <template #icon><EditOutlined /></template>
+                编辑
+              </a-button>
+              <a-button type="link" danger size="small" @click="handleDelete(record)">
+                <template #icon><DeleteOutlined /></template>
+                删除
+              </a-button>
+            </a-space>
+          </template>
+        </template>
+      </a-table>
+
+      <div class="mt-4 flex justify-end">
+        <a-pagination
+          :current="store.pagination.page"
+          :page-size="store.pagination.per_page"
+          :total="store.pagination.total"
+          show-size-changer
+          show-quick-jumper
+          :show-total="(total: number) => `共 ${total} 条`"
+          @change="handlePageChange"
+        />
+      </div>
+    </a-card>
+
+    <!-- Create/Edit Modal -->
+    <a-modal
+      v-model:open="modalVisible"
+      :title="modalTitle"
+      :confirm-loading="saving"
+      @ok="handleSubmit"
+      @cancel="modalVisible = false"
+      :width="640"
+    >
+      <a-form
+        ref="formRef"
+        :model="form"
+        :rules="rules"
+        layout="vertical"
+        class="mt-4"
+      >
+        <a-row :gutter="16">
+          <a-col :span="12">
+            <a-form-item label="公司" name="company_id">
+              <a-select
+                v-model:value="form.company_id"
+                placeholder="请选择公司"
+                :options="store.companies.map(c => ({
+                  value: c.id,
+                  label: (c.label && c.label !== 'null') ? c.label : c.name
+                }))"
+                show-search
+                :filter-option="(input: string, option: { label: string }) =>
+                  option.label.toLowerCase().includes(input.toLowerCase())"
+              />
+            </a-form-item>
+          </a-col>
+          <a-col :span="12">
+            <a-form-item label="平台" name="platform_id">
+              <a-select
+                v-model:value="form.platform_id"
+                placeholder="请选择平台"
+                :options="store.platforms.map(p => ({
+                  value: p.id,
+                  label: (p.label && p.label !== 'null') ? p.label : (p.name || `平台 #${p.id}`)
+                }))"
+                show-search
+                :filter-option="(input: string, option: { label: string }) =>
+                  option.label.toLowerCase().includes(input.toLowerCase())"
+              />
+            </a-form-item>
+          </a-col>
+        </a-row>
+
+        <a-row :gutter="16">
+          <a-col :span="12">
+            <a-form-item label="店铺" name="store_id">
+              <a-select
+                v-model:value="form.store_id"
+                placeholder="留空表示平台默认"
+                :options="filteredStoreOptions"
+                allow-clear
+                show-search
+                :filter-option="(input: string, option: { label: string }) =>
+                  option.label.toLowerCase().includes(input.toLowerCase())"
+              />
+            </a-form-item>
+          </a-col>
+          <a-col :span="12">
+            <a-form-item label="内部 SKU" name="origin_sku">
+              <a-select
+                v-model:value="form.origin_sku_id"
+                placeholder="选择已有 SKU"
+                :options="filteredSkuOrigins.map(s => ({
+                  value: s.id,
+                  label: `${s.sku} - ${s.name}`
+                }))"
+                allow-clear
+                show-search
+                :filter-option="(input: string, option: { label: string }) =>
+                  option.label.toLowerCase().includes(input.toLowerCase())"
+                @change="(val: number | undefined) => {
+                  const found = store.skuOrigins.find(s => s.id === val)
+                  form.origin_sku = found?.sku || ''
+                }"
+              />
+              <a-input
+                v-if="!form.origin_sku_id"
+                v-model:value="form.origin_sku"
+                placeholder="或手动输入内部 SKU"
+                class="mt-2"
+              />
+            </a-form-item>
+          </a-col>
+        </a-row>
+
+        <a-row :gutter="16">
+          <a-col :span="16">
+            <a-form-item name="platform_outer_sku">
+              <template #label>
+                <span>
+                  平台 SKU
+                  <a-tooltip title="电商平台侧使用的 SKU 编码，需符合平台填写规则（如不能以 0 开头、不能含特殊字符等）">
+                    <QuestionCircleOutlined class="ml-1 text-gray-400" />
+                  </a-tooltip>
+                </span>
+              </template>
+              <a-input v-model:value="form.platform_outer_sku" placeholder="平台侧 SKU 编码">
+                <template #addonAfter>
+                  <a-button type="link" size="small" @click="openGenerate" :style="{ padding: 0 }">
+                    <ThunderboltOutlined /> 自动生成
+                  </a-button>
+                </template>
+              </a-input>
+            </a-form-item>
+          </a-col>
+          <a-col :span="8">
+            <a-form-item label="状态">
+              <a-switch v-model:checked="form.enabled" checked-children="启用" un-checked-children="禁用" />
+            </a-form-item>
+          </a-col>
+        </a-row>
+
+        <a-form-item label="平台商品 ID" name="platform_product_id">
+          <a-input v-model:value="form.platform_product_id" placeholder="可选" />
+        </a-form-item>
+
+        <a-form-item label="备注" name="note">
+          <a-textarea v-model:value="form.note" placeholder="可选备注" :rows="2" />
+        </a-form-item>
+      </a-form>
+    </a-modal>
+
+    <!-- SKU Generation Modal -->
+    <a-modal
+      v-model:open="genModalVisible"
+      title="自动生成平台 SKU"
+      :width="480"
+      @cancel="genModalVisible = false"
+    >
+      <div class="mt-4">
+        <a-form layout="vertical">
+          <a-form-item label="生成策略">
+            <a-radio-group v-model:value="genForm.strategy">
+              <a-radio-button value="prefix">前缀模式</a-radio-button>
+              <a-radio-button value="prefix_random">前缀+随机</a-radio-button>
+              <a-radio-button value="manual">手动输入</a-radio-button>
+            </a-radio-group>
+          </a-form-item>
+
+          <template v-if="genForm.strategy === 'prefix' || genForm.strategy === 'prefix_random'">
+            <a-form-item label="前缀">
+              <a-input v-model:value="genForm.prefix" placeholder="如 C03" />
+              <div class="text-xs text-gray-400 mt-1">
+                前缀模式：生成 {前缀}_{内部SKU}，如 C03_0032
+              </div>
+            </a-form-item>
+          </template>
+
+          <template v-if="genForm.strategy === 'prefix_random'">
+            <a-form-item label="随机部分长度">
+              <a-input-number v-model:value="genForm.random_length" :min="2" :max="8" />
+              <div class="text-xs text-gray-400 mt-1">
+                前缀+随机模式：生成 {前缀}_{随机字母数字}，如 C03_A7K2
+              </div>
+            </a-form-item>
+          </template>
+
+          <template v-if="genForm.strategy === 'manual'">
+            <a-form-item label="手动输入">
+              <a-input v-model:value="genForm.manual_value" placeholder="手动输入 SKU 值" />
+            </a-form-item>
+          </template>
+
+          <a-form-item>
+            <a-button type="primary" :loading="genLoading" @click="handleGenerate">
+              <ThunderboltOutlined /> 生成预览
+            </a-button>
+          </a-form-item>
+
+          <a-form-item v-if="genResult" label="生成结果">
+            <a-alert type="success" show-icon>
+              <template #message>
+                <span class="font-mono text-base">{{ genResult }}</span>
+              </template>
+            </a-alert>
+          </a-form-item>
+        </a-form>
+      </div>
+
+      <template #footer>
+        <a-button @click="genModalVisible = false">取消</a-button>
+        <a-button type="primary" :disabled="!genResult" @click="applyGenerated">
+          使用此 SKU
+        </a-button>
+      </template>
+    </a-modal>
+  </div>
+</template>
+
+<style scoped>
+.filter-form :deep(.ant-form-item) {
+  margin-bottom: 12px;
+}
+</style>
diff --git a/frontend/src/pages/sku-origins/index.vue b/frontend/src/pages/sku-origins/index.vue
new file mode 100644
index 0000000..7ba61a4
--- /dev/null
+++ b/frontend/src/pages/sku-origins/index.vue
@@ -0,0 +1,296 @@
+<script setup lang="ts">
+import { useSkuOriginStore, type SkuOriginForm } from '@/stores/sku-origin'
+import CascadeFilter from '@/components/CascadeFilter.vue'
+import {
+  SearchOutlined,
+  ReloadOutlined,
+  PlusOutlined,
+  EditOutlined,
+  DeleteOutlined,
+} from '@ant-design/icons-vue'
+import type { Rule } from 'ant-design-vue/es/form'
+
+const store = useSkuOriginStore()
+
+const columns = [
+  { title: 'ID', dataIndex: 'id', width: 80 },
+  { title: '公司', key: 'company', width: 140 },
+  { title: 'SKU', dataIndex: 'sku', width: 160 },
+  { title: '名称', dataIndex: 'name', ellipsis: true },
+  { title: '条形码', dataIndex: 'barcode', width: 160 },
+  { title: '标签', dataIndex: 'label', width: 120 },
+  { title: 'HS 编码', dataIndex: 'hs', width: 120 },
+  { title: '更新时间', key: 'updated_at', width: 170 },
+  { title: '操作', key: 'action', width: 160, fixed: 'right' as const },
+]
+
+// Modal state
+const modalVisible = ref(false)
+const modalTitle = ref('新建内部 SKU')
+const editingId = ref<number | null>(null)
+const formRef = ref()
+const saving = ref(false)
+
+const defaultForm = (): SkuOriginForm => ({
+  company_id: undefined,
+  sku: '',
+  barcode: '',
+  name: '',
+  label: '',
+  hs: '',
+  ledger: '',
+})
+
+const form = reactive<SkuOriginForm>(defaultForm())
+
+const rules: Record<string, Rule[]> = {
+  company_id: [{ required: true, message: '请选择公司', trigger: 'change' }],
+  sku: [{ required: true, message: '请输入 SKU 编码', trigger: 'blur' }],
+  name: [{ required: true, message: '请输入名称', trigger: 'blur' }],
+}
+
+onMounted(() => {
+  store.loadLookups()
+  store.fetchItems()
+})
+
+function handleSearch() {
+  store.pagination.page = 1
+  store.fetchItems()
+}
+
+function handleReset() {
+  store.resetFilters()
+  store.fetchItems()
+}
+
+function handlePageChange(page: number, pageSize: number) {
+  store.pagination.page = page
+  store.pagination.per_page = pageSize
+  store.fetchItems()
+}
+
+function formatTime(time: string | null) {
+  if (!time) return '-'
+  return time.replace('T', ' ').substring(0, 16)
+}
+
+function openCreate() {
+  Object.assign(form, defaultForm())
+  editingId.value = null
+  modalTitle.value = '新建内部 SKU'
+  modalVisible.value = true
+}
+
+function openEdit(record: { id: number; company_id: number; sku: string; barcode: string; name: string; label: string | null; hs: string | null }) {
+  editingId.value = record.id
+  modalTitle.value = '编辑内部 SKU'
+  Object.assign(form, {
+    company_id: record.company_id,
+    sku: record.sku,
+    barcode: record.barcode || '',
+    name: record.name || '',
+    label: record.label || '',
+    hs: record.hs || '',
+    ledger: '',
+  })
+  modalVisible.value = true
+}
+
+async function handleSubmit() {
+  try {
+    await formRef.value.validate()
+  } catch {
+    return
+  }
+  saving.value = true
+  try {
+    if (editingId.value) {
+      await store.updateItem(editingId.value, { ...form })
+    } else {
+      await store.createItem({ ...form })
+    }
+    modalVisible.value = false
+  } catch (err: unknown) {
+    const msg = err instanceof Error ? err.message : '操作失败'
+    message.error(msg)
+  } finally {
+    saving.value = false
+  }
+}
+
+function handleDelete(record: { id: number; sku: string }) {
+  Modal.confirm({
+    title: '确认删除',
+    content: `确定删除 SKU「${record.sku}」？如果该 SKU 已被映射引用将无法删除。`,
+    okText: '删除',
+    okType: 'danger',
+    cancelText: '取消',
+    async onOk() {
+      try {
+        await store.deleteItem(record.id)
+      } catch (err: unknown) {
+        const msg = err instanceof Error ? err.message : '删除失败'
+        message.error(msg)
+      }
+    },
+  })
+}
+</script>
+
+<template>
+  <div>
+    <h2 class="text-xl font-semibold mb-4">内部 SKU 管理</h2>
+
+    <!-- Filter area -->
+    <a-card class="mb-6">
+      <a-form layout="inline" class="filter-form" @submit.prevent="handleSearch">
+        <a-form-item>
+          <CascadeFilter v-model="store.cascadeValue" />
+        </a-form-item>
+        <a-form-item label="SKU">
+          <a-input
+            v-model:value="store.filters.sku"
+            placeholder="SKU 编码"
+            allow-clear
+            @press-enter="handleSearch"
+          />
+        </a-form-item>
+        <a-form-item label="名称">
+          <a-input
+            v-model:value="store.filters.name"
+            placeholder="模糊搜索"
+            allow-clear
+            @press-enter="handleSearch"
+          />
+        </a-form-item>
+        <a-form-item label="条形码">
+          <a-input
+            v-model:value="store.filters.barcode"
+            placeholder="条形码"
+            allow-clear
+            @press-enter="handleSearch"
+          />
+        </a-form-item>
+        <a-form-item>
+          <a-space>
+            <a-button type="primary" html-type="submit">
+              <template #icon><SearchOutlined /></template>
+              搜索
+            </a-button>
+            <a-button @click="handleReset">
+              <template #icon><ReloadOutlined /></template>
+              重置
+            </a-button>
+          </a-space>
+        </a-form-item>
+      </a-form>
+    </a-card>
+
+    <!-- Table -->
+    <a-card>
+      <div class="mb-4 flex justify-between items-center">
+        <span class="text-gray-500">共 {{ store.pagination.total }} 条记录</span>
+        <a-button type="primary" @click="openCreate">
+          <template #icon><PlusOutlined /></template>
+          新建 SKU
+        </a-button>
+      </div>
+
+      <a-table
+        :columns="columns"
+        :data-source="store.items"
+        :loading="store.loading"
+        :pagination="false"
+        row-key="id"
+        :scroll="{ x: 1200 }"
+      >
+        <template #bodyCell="{ column, record }">
+          <template v-if="column.key === 'company'">
+            {{ store.companyMap.get(record.company_id) || record.company_id }}
+          </template>
+          <template v-else-if="column.key === 'updated_at'">
+            {{ formatTime(record.updated_at) }}
+          </template>
+          <template v-else-if="column.key === 'action'">
+            <a-space>
+              <a-button type="link" size="small" @click="openEdit(record)">
+                <template #icon><EditOutlined /></template>
+                编辑
+              </a-button>
+              <a-button type="link" danger size="small" @click="handleDelete(record)">
+                <template #icon><DeleteOutlined /></template>
+                删除
+              </a-button>
+            </a-space>
+          </template>
+        </template>
+      </a-table>
+
+      <div class="mt-4 flex justify-end">
+        <a-pagination
+          :current="store.pagination.page"
+          :page-size="store.pagination.per_page"
+          :total="store.pagination.total"
+          show-size-changer
+          show-quick-jumper
+          :show-total="(total: number) => `共 ${total} 条`"
+          @change="handlePageChange"
+        />
+      </div>
+    </a-card>
+
+    <!-- Create/Edit Modal -->
+    <a-modal
+      v-model:open="modalVisible"
+      :title="modalTitle"
+      :confirm-loading="saving"
+      @ok="handleSubmit"
+      @cancel="modalVisible = false"
+      :width="560"
+    >
+      <a-form
+        ref="formRef"
+        :model="form"
+        :rules="rules"
+        layout="vertical"
+        class="mt-4"
+      >
+        <a-form-item label="公司" name="company_id">
+          <a-select
+            v-model:value="form.company_id"
+            placeholder="请选择公司"
+            :options="store.companies.map(c => ({
+              value: c.id,
+              label: (c.label && c.label !== 'null') ? c.label : c.name
+            }))"
+            show-search
+            :filter-option="(input: string, option: { label: string }) =>
+              option.label.toLowerCase().includes(input.toLowerCase())"
+          />
+        </a-form-item>
+        <a-form-item label="SKU 编码" name="sku">
+          <a-input v-model:value="form.sku" placeholder="客户内部 SKU 编码" />
+        </a-form-item>
+        <a-form-item label="名称" name="name">
+          <a-input v-model:value="form.name" placeholder="SKU 名称/描述" />
+        </a-form-item>
+        <a-form-item label="条形码" name="barcode">
+          <a-input v-model:value="form.barcode" placeholder="可选" />
+        </a-form-item>
+        <a-form-item label="标签" name="label">
+          <a-input v-model:value="form.label" placeholder="可选别名" />
+        </a-form-item>
+        <a-form-item label="HS 编码" name="hs">
+          <a-input v-model:value="form.hs" placeholder="可选" />
+        </a-form-item>
+      </a-form>
+    </a-modal>
+  </div>
+</template>
+
+<style scoped>
+.filter-form :deep(.ant-form-item) {
+  margin-bottom: 12px;
+}
+</style>
diff --git a/frontend/src/stores/api-key.ts b/frontend/src/stores/api-key.ts
new file mode 100644
index 0000000..c3ed131
--- /dev/null
+++ b/frontend/src/stores/api-key.ts
@@ -0,0 +1,70 @@
+import { api } from '@/utils/request'
+import type { ApiKeyRecord, ApiKeyCreateParams, ApiKeyCreateResult } from '@/types/api'
+
+export const MAX_KEYS_PER_USER = 10
+
+export const useApiKeyStore = defineStore('api-key', () => {
+  const keys = ref<ApiKeyRecord[]>([])
+  const loading = ref(false)
+
+  const canCreate = computed(() => keys.value.length < MAX_KEYS_PER_USER)
+  const keyCount = computed(() => keys.value.length)
+
+  async function fetchMyKeys() {
+    loading.value = true
+    try {
+      const data = await api.get<ApiKeyRecord[]>('/api/v1/me/api-keys')
+      keys.value = data
+    } catch (err: unknown) {
+      const msg = err instanceof Error ? err.message : '获取 API Key 列表失败'
+      message.error(msg)
+    } finally {
+      loading.value = false
+    }
+  }
+
+  async function createKey(params: ApiKeyCreateParams): Promise<ApiKeyCreateResult | null> {
+    try {
+      const data = await api.post<ApiKeyCreateResult>('/api/v1/me/api-keys', params)
+      await fetchMyKeys()
+      return data
+    } catch (err: unknown) {
+      const msg = err instanceof Error ? err.message : '创建 API Key 失败'
+      message.error(msg)
+      return null
+    }
+  }
+
+  async function toggleKey(id: number, enabled: boolean) {
+    try {
+      await api.patch(`/api/v1/me/api-keys/${id}/toggle`, { enabled })
+      await fetchMyKeys()
+    } catch (err: unknown) {
+      const msg = err instanceof Error ? err.message : '操作失败'
+      message.error(msg)
+    }
+  }
+
+  async function deleteKey(id: number) {
+    try {
+      await api.delete(`/api/v1/me/api-keys/${id}`)
+      await fetchMyKeys()
+      message.success('已删除')
+    } catch (err: unknown) {
+      const msg = err instanceof Error ? err.message : '删除失败'
+      message.error(msg)
+    }
+  }
+
+  return {
+    keys,
+    loading,
+    canCreate,
+    keyCount,
+    MAX_KEYS_PER_USER,
+    fetchMyKeys,
+    createKey,
+    toggleKey,
+    deleteKey,
+  }
+})
diff --git a/frontend/src/stores/sku-mapping.ts b/frontend/src/stores/sku-mapping.ts
new file mode 100644
index 0000000..810ec15
--- /dev/null
+++ b/frontend/src/stores/sku-mapping.ts
@@ -0,0 +1,251 @@
+import { api } from '@/utils/request'
+import type { PaginatedData } from '@/types/api'
+
+// ─── Types ───
+
+export interface SkuMappingRecord {
+  id: number
+  company_id: number
+  platform_id: number
+  store_id: number | null
+  origin_sku: string
+  origin_sku_id: number | null
+  platform_outer_sku: string | null
+  platform_product_id: string
+  enabled: boolean
+  note: string | null
+  created_at: string
+  updated_at: string
+}
+
+export interface SkuMappingFilters {
+  origin_sku: string
+  platform_outer_sku: string
+  enabled: boolean | undefined
+}
+
+export interface SkuMappingForm {
+  company_id: number | undefined
+  platform_id: number | undefined
+  store_id: number | undefined
+  origin_sku: string
+  origin_sku_id: number | undefined
+  platform_product_id: string
+  platform_outer_sku: string
+  generation_strategy: string
+  warehouse_id: number | undefined
+  enabled: boolean
+  note: string
+}
+
+export interface GenerateSkuParams {
+  origin_sku_id: number
+  platform_id: number
+  strategy: 'prefix' | 'prefix_random' | 'manual'
+  prefix: string
+  random_length: number
+  manual_value: string
+}
+
+export interface GenerateSkuResult {
+  generated_sku: string
+  strategy_record: string
+  has_duplicate: boolean
+  existing_mappings: Array<{
+    id: number
+    store_id: number | null
+    platform_outer_sku: string | null
+    note: string | null
+  }>
+  message: string
+}
+
+export interface DuplicateCheckResult {
+  has_duplicate: boolean
+  existing_mappings: Array<{
+    id: number
+    store_id: number | null
+    platform_outer_sku: string | null
+    note: string | null
+  }>
+  message: string
+}
+
+// ─── Store ───
+
+export const useSkuMappingStore = defineStore('skuMapping', () => {
+  const items = ref<SkuMappingRecord[]>([])
+  const loading = ref(false)
+  const pagination = reactive({
+    page: 1,
+    per_page: 15,
+    total: 0,
+  })
+  const cascadeValue = reactive({
+    company_id: undefined as number | undefined,
+    platform_id: undefined as number | undefined,
+    store_id: undefined as number | undefined,
+  })
+  const filters = reactive<SkuMappingFilters>({
+    origin_sku: '',
+    platform_outer_sku: '',
+    enabled: undefined,
+  })
+
+  // Lookups
+  const companies = ref<{ id: number; name: string; label: string | null }[]>([])
+  const platforms = ref<{ id: number; name: string; label: string | null }[]>([])
+  const stores = ref<
+    { id: number; company_id: number; platform_id: number; name: string; label: string | null }[]
+  >([])
+
+  const companyMap = computed(
+    () =>
+      new Map(
+        companies.value.map((c) => [
+          c.id,
+          c.label && c.label !== 'null' ? c.label : c.name,
+        ]),
+      ),
+  )
+  const platformMap = computed(
+    () =>
+      new Map(
+        platforms.value.map((p) => [
+          p.id,
+          p.label && p.label !== 'null' ? p.label : p.name || `平台 #${p.id}`,
+        ]),
+      ),
+  )
+  const storeMap = computed(
+    () =>
+      new Map(
+        stores.value.map((s) => [
+          s.id,
+          s.label && s.label !== 'null' ? s.label : s.name,
+        ]),
+      ),
+  )
+
+  // SKU Origin lookups for select
+  const skuOrigins = ref<{ id: number; company_id: number; sku: string; name: string }[]>([])
+
+  async function loadLookups() {
+    try {
+      const [c, p, s] = await Promise.all([
+        api.get<typeof companies.value>('/api/v1/companies'),
+        api.get<typeof platforms.value>('/api/v1/platforms'),
+        api.get<typeof stores.value>('/api/v1/stores'),
+      ])
+      companies.value = c
+      platforms.value = p
+      stores.value = s
+    } catch (err) {
+      console.warn('加载查找表数据失败', err)
+    }
+  }
+
+  async function loadSkuOrigins(company_id?: number) {
+    try {
+      const data = await api.get<PaginatedData<{ id: number; company_id: number; sku: string; name: string }>>('/api/v1/sku-origins', {
+        company_id,
+        per_page: 100,
+      })
+      skuOrigins.value = data.items
+    } catch (err) {
+      console.warn('加载 SKU Origin 列表失败', err)
+    }
+  }
+
+  async function fetchItems() {
+    loading.value = true
+    try {
+      const data = await api.get<PaginatedData<SkuMappingRecord>>('/api/v1/sku-mappings', {
+        page: pagination.page,
+        per_page: pagination.per_page,
+        company_id: cascadeValue.company_id,
+        platform_id: cascadeValue.platform_id,
+        store_id: cascadeValue.store_id,
+        origin_sku: filters.origin_sku || undefined,
+        platform_outer_sku: filters.platform_outer_sku || undefined,
+        enabled: filters.enabled,
+      })
+      items.value = data.items
+      pagination.total = data.total
+      pagination.page = data.page
+    } catch (err: unknown) {
+      items.value = []
+      pagination.total = 0
+      const msg = err instanceof Error ? err.message : '获取映射列表失败'
+      message.error(msg)
+    } finally {
+      loading.value = false
+    }
+  }
+
+  function resetFilters() {
+    filters.origin_sku = ''
+    filters.platform_outer_sku = ''
+    filters.enabled = undefined
+    cascadeValue.company_id = undefined
+    cascadeValue.platform_id = undefined
+    cascadeValue.store_id = undefined
+    pagination.page = 1
+  }
+
+  async function createItem(form: SkuMappingForm) {
+    await api.post('/api/v1/sku-mappings', form)
+    message.success('创建成功')
+    await fetchItems()
+  }
+
+  async function updateItem(id: number, form: Partial<SkuMappingForm>) {
+    await api.put(`/api/v1/sku-mappings/${id}`, form)
+    message.success('更新成功')
+    await fetchItems()
+  }
+
+  async function deleteItem(id: number) {
+    await api.delete(`/api/v1/sku-mappings/${id}`)
+    message.success('删除成功')
+    await fetchItems()
+  }
+
+  async function generateSku(params: GenerateSkuParams): Promise<GenerateSkuResult> {
+    return await api.post<GenerateSkuResult>('/api/v1/sku-mappings/generate-sku', params)
+  }
+
+  async function checkDuplicate(
+    origin_sku_id: number,
+    platform_id: number,
+  ): Promise<DuplicateCheckResult> {
+    return await api.get<DuplicateCheckResult>('/api/v1/sku-mappings/check-duplicate', {
+      origin_sku_id,
+      platform_id,
+    })
+  }
+
+  return {
+    items,
+    loading,
+    pagination,
+    cascadeValue,
+    filters,
+    companies,
+    platforms,
+    stores,
+    companyMap,
+    platformMap,
+    storeMap,
+    skuOrigins,
+    loadLookups,
+    loadSkuOrigins,
+    fetchItems,
+    resetFilters,
+    createItem,
+    updateItem,
+    deleteItem,
+    generateSku,
+    checkDuplicate,
+  }
+})
diff --git a/frontend/src/stores/sku-origin.ts b/frontend/src/stores/sku-origin.ts
new file mode 100644
index 0000000..e9323e1
--- /dev/null
+++ b/frontend/src/stores/sku-origin.ts
@@ -0,0 +1,149 @@
+import { api } from '@/utils/request'
+import type { PaginatedData } from '@/types/api'
+
+// ─── Types ───
+
+export interface SkuOriginRecord {
+  id: number
+  company_id: number
+  sku: string
+  barcode: string
+  name: string
+  label: string | null
+  hs: string | null
+  created_at: string
+  updated_at: string
+}
+
+export interface SkuOriginDetail extends SkuOriginRecord {
+  ledger: string | null
+  ext: Record<string, unknown> | null
+}
+
+export interface SkuOriginFilters {
+  sku: string
+  name: string
+  barcode: string
+}
+
+export interface SkuOriginForm {
+  company_id: number | undefined
+  sku: string
+  barcode: string
+  name: string
+  label: string
+  hs: string
+  ledger: string
+}
+
+// ─── Store ───
+
+export const useSkuOriginStore = defineStore('skuOrigin', () => {
+  const items = ref<SkuOriginRecord[]>([])
+  const loading = ref(false)
+  const pagination = reactive({
+    page: 1,
+    per_page: 15,
+    total: 0,
+  })
+  const cascadeValue = reactive({
+    company_id: undefined as number | undefined,
+    platform_id: undefined as number | undefined,
+    store_id: undefined as number | undefined,
+  })
+  const filters = reactive<SkuOriginFilters>({
+    sku: '',
+    name: '',
+    barcode: '',
+  })
+
+  // Lookup maps
+  const companies = ref<{ id: number; name: string; label: string | null }[]>([])
+  const companyMap = computed(
+    () =>
+      new Map(
+        companies.value.map((c) => [
+          c.id,
+          c.label && c.label !== 'null' ? c.label : c.name,
+        ]),
+      ),
+  )
+
+  async function loadLookups() {
+    try {
+      companies.value = await api.get<{ id: number; name: string; label: string | null }[]>(
+        '/api/v1/companies',
+      )
+    } catch (err) {
+      console.warn('加载查找表数据失败', err)
+    }
+  }
+
+  async function fetchItems() {
+    loading.value = true
+    try {
+      const data = await api.get<PaginatedData<SkuOriginRecord>>('/api/v1/sku-origins', {
+        page: pagination.page,
+        per_page: pagination.per_page,
+        company_id: cascadeValue.company_id,
+        sku: filters.sku || undefined,
+        name: filters.name || undefined,
+        barcode: filters.barcode || undefined,
+      })
+      items.value = data.items
+      pagination.total = data.total
+      pagination.page = data.page
+    } catch (err: unknown) {
+      items.value = []
+      pagination.total = 0
+      const msg = err instanceof Error ? err.message : '获取 SKU 列表失败'
+      message.error(msg)
+    } finally {
+      loading.value = false
+    }
+  }
+
+  function resetFilters() {
+    filters.sku = ''
+    filters.name = ''
+    filters.barcode = ''
+    cascadeValue.company_id = undefined
+    cascadeValue.platform_id = undefined
+    cascadeValue.store_id = undefined
+    pagination.page = 1
+  }
+
+  async function createItem(form: SkuOriginForm) {
+    await api.post('/api/v1/sku-origins', form)
+    message.success('创建成功')
+    await fetchItems()
+  }
+
+  async function updateItem(id: number, form: Partial<SkuOriginForm>) {
+    await api.put(`/api/v1/sku-origins/${id}`, form)
+    message.success('更新成功')
+    await fetchItems()
+  }
+
+  async function deleteItem(id: number) {
+    await api.delete(`/api/v1/sku-origins/${id}`)
+    message.success('删除成功')
+    await fetchItems()
+  }
+
+  return {
+    items,
+    loading,
+    pagination,
+    cascadeValue,
+    filters,
+    companies,
+    companyMap,
+    loadLookups,
+    fetchItems,
+    resetFilters,
+    createItem,
+    updateItem,
+    deleteItem,
+  }
+})
diff --git a/frontend/src/stores/user.ts b/frontend/src/stores/user.ts
index 74a95e3..667402a 100644
--- a/frontend/src/stores/user.ts
+++ b/frontend/src/stores/user.ts
@@ -7,6 +7,7 @@ export interface UserInfo {
   email: string
   role: string
   status: number
+  api_key_enabled?: boolean
   ext?: Record<string, unknown> | null
 }
 
diff --git a/frontend/src/types/api.ts b/frontend/src/types/api.ts
index b52fab4..77f59c5 100644
--- a/frontend/src/types/api.ts
+++ b/frontend/src/types/api.ts
@@ -304,6 +304,30 @@ export interface OperationLogFilters {
   created_at_range: [string, string] | null
 }
 
+/** ─── API Key ─── */
+
+export interface ApiKeyRecord {
+  id: number
+  user_id: number
+  name: string
+  key_prefix: string
+  last_used_at: string | null
+  expires_at: string | null
+  enabled: boolean
+  created_at: string
+  user?: { id: number; username: string; api_key_enabled?: boolean }
+}
+
+export interface ApiKeyCreateParams {
+  name: string
+  expires_at?: string | null
+}
+
+export interface ApiKeyCreateResult {
+  plain_key: string
+  api_key: ApiKeyRecord
+}
+
 /** 业务异常 */
 export class ApiError extends Error {
   code: number