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

docs/03-业务模块/DC-数据清洗整理/04-开发计划/工具C_AI_Few-shot示例库.md

@@ -570,6 +570,9 @@ df['creatinine'] = pd.to_numeric(df['creatinine'], errors='coerce')
 
 
 
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docs/03-业务模块/DC-数据清洗整理/04-开发计划/工具C_Bug修复总结_2025-12-08.md

@@ -408,6 +408,9 @@ npm run dev
 
 
 
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docs/03-业务模块/DC-数据清洗整理/04-开发计划/工具C_Day3开发计划.md

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docs/03-业务模块/DC-数据清洗整理/04-开发计划/工具C_Day4-5前端开发计划.md

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docs/03-业务模块/DC-数据清洗整理/04-开发计划/工具C_Pivot列顺序优化总结.md

@@ -227,6 +227,9 @@ FMA___基线 | FMA___1个月 | FMA___2个月
 
 
 
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docs/03-业务模块/DC-数据清洗整理/04-开发计划/工具C_方案B实施总结_2025-12-09.md

@@ -385,6 +385,9 @@ formula = "FMA总分（0-100） / 100"
 
 
 
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docs/03-业务模块/DC-数据清洗整理/04-开发计划/工具C_缺失值处理_开发进度_2025-12-10.md

@@ -219,6 +219,9 @@ async handleFillnaMice(request, reply) {
 
 
 
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docs/03-业务模块/DC-数据清洗整理/04-开发计划/工具C_缺失值处理功能_更新说明.md

@@ -191,6 +191,9 @@ method: 'mean' | 'median' | 'mode' | 'constant' | 'ffill' | 'bfill'
 
 
 
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