feat(pkb): Integrate pgvector and create Dify replacement plan

Summary:
- Migrate PostgreSQL to pgvector/pgvector:pg15 Docker image
- Successfully install and verify pgvector 0.8.1 extension
- Create comprehensive Dify-to-pgvector migration plan
- Update PKB module documentation with pgvector status
- Update system documentation with pgvector integration

Key changes:
- docker-compose.yml: Switch to pgvector/pgvector:pg15 image
- Add EkbDocument and EkbChunk data model design
- Design R-C-R-G hybrid retrieval architecture
- Add clinical data JSONB fields (pico, studyDesign, regimen, safety, criteria, endpoints)
- Create detailed 10-day implementation roadmap

Documentation updates:
- PKB module status: pgvector RAG infrastructure ready
- System status: pgvector 0.8.1 integrated
- New: Dify replacement development plan (01-Dify替换为pgvector开发计划.md)
- New: Enterprise medical knowledge base solution V2

Tested: PostgreSQL with pgvector verified, frontend and backend functionality confirmed

docs/08-项目管理/03-每周计划/2025-12-13-Postgres-Only架构改造完成.md

@@ -1044,5 +1044,6 @@ Redis 实例：￥500/月
 
 
 
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docs/08-项目管理/05-技术债务/通用对话服务抽取计划.md

@@ -502,5 +502,6 @@ import { ChatContainer } from '@/shared/components/Chat';
 
 
 
+
 
 

docs/08-项目管理/2026-01-11-数据库事故总结.md

@@ -210,3 +210,4 @@ VALUES ('user-mock-001', '13800000000', ..., 'tenant-mock-001', ...);
 
 
 
+

docs/08-项目管理/PKB前端问题修复报告.md

@@ -422,3 +422,4 @@ frontend-v2/src/modules/pkb/
 
 
 
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docs/08-项目管理/PKB前端验证指南.md

@@ -284,3 +284,4 @@ npm run dev
 
 
 
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docs/08-项目管理/PKB功能审查报告-阶段0.md

@@ -799,3 +799,4 @@ AIA智能问答模块
 
 
 
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docs/08-项目管理/PKB和RVW功能迁移计划.md

@@ -942,5 +942,6 @@ CREATE INDEX idx_rvw_tasks_created_at ON rvw_schema.review_tasks(created_at);
 
 
 
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docs/08-项目管理/PKB精细化优化报告.md

@@ -597,3 +597,4 @@ const typography = {
 
 
 
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docs/08-项目管理/PKB迁移-超级安全执行计划.md

@@ -909,3 +909,4 @@ app.use('/api/v1/knowledge', (req, res) => {
 
 
 
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docs/08-项目管理/PKB迁移-阶段1完成报告.md

@@ -223,3 +223,4 @@ rm -rf src/modules/pkb
 
 
 
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docs/08-项目管理/PKB迁移-阶段2完成报告.md

@@ -398,3 +398,4 @@ GET /api/v2/pkb/batch-tasks/batch/templates
 
 
 
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docs/08-项目管理/PKB迁移-阶段2进行中.md

@@ -42,3 +42,4 @@ import pkbRoutes from './modules/pkb/routes/index.js';
 
 
 
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docs/08-项目管理/PKB迁移-阶段3完成报告.md

@@ -311,3 +311,4 @@ backend/
 
 
 
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docs/08-项目管理/PKB迁移-阶段4完成报告.md

@@ -522,3 +522,4 @@ const response = await fetch('/api/v2/pkb/batch-tasks/batch/execute', {
 
 
 
+