fix(pkb): fix create KB and upload issues - remove simulated upload, fix department mapping, add upload modal

Fixed issues:
- Remove simulateUpload function from DashboardPage Step 3
- Map department to description field when creating KB
- Add upload modal in WorkspacePage knowledge assets tab
- Fix DocumentUpload import path (../../stores to ../stores)

Known issue: Dify API validation error during document upload (file uploaded but DB record failed, needs investigation)

Testing: KB creation works, upload dialog opens correctly

backend/src/modules/rvw/services/methodologyService.ts

@@ -1,36 +1,44 @@
 /**
  * RVW稿件审查模块 - 方法学评估服务
  * @module rvw/services/methodologyService
+ * 
+ * Phase 3.5.5 改造：使用 PromptService 替代文件读取
+ * - 支持灰度预览（调试者看 DRAFT，普通用户看 ACTIVE）
+ * - 三级容灾（数据库→缓存→兜底）
  */
 
-import fs from 'fs/promises';
-import path from 'path';
-import { fileURLToPath } from 'url';
 import { LLMFactory } from '../../../common/llm/adapters/LLMFactory.js';
 import { ModelType } from '../../../common/llm/adapters/types.js';
 import { logger } from '../../../common/logging/index.js';
+import { prisma } from '../../../config/database.js';
+import { getPromptService } from '../../../common/prompt/index.js';
 import { MethodologyReview } from '../types/index.js';
 import { parseJSONFromLLMResponse } from './utils.js';
 
-const __filename = fileURLToPath(import.meta.url);
-const __dirname = path.dirname(__filename);
-
-// Prompt文件路径
-const PROMPT_PATH = path.join(__dirname, '../../../../prompts/review_methodology_system.txt');
-
 /**
  * 方法学评估
  * @param text 稿件文本
  * @param modelType 模型类型
+ * @param userId 用户ID（用于灰度预览判断）
  * @returns 评估结果
  */
 export async function reviewMethodology(
   text: string,
-  modelType: ModelType = 'deepseek-v3'
+  modelType: ModelType = 'deepseek-v3',
+  userId?: string
 ): Promise<MethodologyReview> {
   try {
-    // 1. 读取系统Prompt
-    const systemPrompt = await fs.readFile(PROMPT_PATH, 'utf-8');
+    // 1. 从 PromptService 获取系统Prompt（支持灰度预览）
+    const promptService = getPromptService(prisma);
+    const { content: systemPrompt, isDraft } = await promptService.get(
+      'RVW_METHODOLOGY',
+      {},
+      { userId }
+    );
+    
+    if (isDraft) {
+      logger.info('[RVW:Methodology] 使用 DRAFT 版本 Prompt（调试模式）', { userId });
+    }
 
     // 2. 构建消息
     const messages = [
@@ -71,3 +79,4 @@ export async function reviewMethodology(
 
 
 
+