feat(aia): Integrate PromptService for 10 AI agents

Features:
- Migrate 10 agent prompts from hardcoded to database
- Add grayscale preview support (DRAFT/ACTIVE distribution)
- Implement 3-tier fallback (DB -> Cache -> Hardcoded)
- Add version management and rollback capability

Files changed:
- backend/scripts/migrate-aia-prompts.ts (new migration script)
- backend/src/common/prompt/prompt.fallbacks.ts (add AIA fallbacks)
- backend/src/modules/aia/services/agentService.ts (integrate PromptService)
- backend/src/modules/aia/services/conversationService.ts (pass userId)
- backend/src/modules/aia/types/index.ts (fix AgentStage type)

Documentation:
- docs/03-业务模块/AIA-AI智能问答/06-开发记录/2026-01-18-Prompt管理系统集成.md
- docs/02-通用能力层/00-通用能力层清单.md (add FileCard, Prompt management)
- docs/00-系统总体设计/00-系统当前状态与开发指南.md (update to v3.6)

Prompt codes:
- AIA_SCIENTIFIC_QUESTION, AIA_PICO_ANALYSIS, AIA_TOPIC_EVALUATION
- AIA_OUTCOME_DESIGN, AIA_CRF_DESIGN, AIA_SAMPLE_SIZE
- AIA_PROTOCOL_WRITING, AIA_METHODOLOGY_REVIEW
- AIA_PAPER_POLISH, AIA_PAPER_TRANSLATE

Tested: Migration script executed, all 10 prompts inserted successfully

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

@@ -575,6 +575,9 @@ df['creatinine'] = pd.to_numeric(df['creatinine'], errors='coerce')
 
 
 
+
+
+
 
 
 

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

@@ -413,6 +413,9 @@ npm run dev
 
 
 
+
+
+
 
 
 

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

@@ -990,6 +990,9 @@ export const aiController = new AIController();
 
 
 
+
+
+
 
 
 

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

@@ -1324,6 +1324,9 @@ npm install react-markdown
 
 
 
+
+
+
 
 
 

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

@@ -232,6 +232,9 @@ FMA___基线 | FMA___1个月 | FMA___2个月
 
 
 
+
+
+
 
 
 

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

@@ -390,6 +390,9 @@ formula = "FMA总分（0-100） / 100"
 
 
 
+
+
+
 
 
 

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

@@ -224,6 +224,9 @@ async handleFillnaMice(request, reply) {
 
 
 
+
+
+
 
 
 

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

@@ -196,6 +196,9 @@ method: 'mean' | 'median' | 'mode' | 'constant' | 'ffill' | 'bfill'
 
 
 
+
+
+