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

tests/QUICKSTART_快速开始.md

@@ -146,5 +146,6 @@ INFO:     Uvicorn running on http://0.0.0.0:8001
 
 
 
+
 
 

tests/README_测试说明.md

@@ -302,5 +302,6 @@ df_numeric.to_excel('test_data/numeric_test.xlsx', index=False)
 
 
 
+
 
 

tests/run_tests.bat

@@ -97,5 +97,6 @@ pause
 
 
 
+
 
 

tests/run_tests.sh

@@ -93,5 +93,6 @@ echo "========================================"
 
 
 
+