feat(iit): Initialize IIT Manager Agent MVP - Day 1 complete

- Add iit_schema with 5 tables
- Create module structure and types (223 lines)
- WeChat integration verified (Access Token success)
- Update system docs to v2.4
- Add REDCap source folders to .gitignore
- Day 1/14 complete (11/11 tasks)

git-commit-day1.ps1

@@ -0,0 +1,72 @@
+# Git Commit Script for IIT Manager Agent Day 1
+# Encoding: UTF-8
+
+cd D:\MyCursor\AIclinicalresearch
+
+# Add all changes
+git add .
+
+# Commit with detailed message (English to avoid encoding issues)
+git commit -m "feat(iit): Initialize IIT Manager Agent MVP - Day 1 foundation complete
+
+Summary:
+- Launch strategic new module: IIT Manager Agent (AI-driven IIT research assistant)
+- Complete Day 1/14 MVP development: Database schema, module structure, and WeChat integration
+
+Database Layer:
+- Add iit_schema to Prisma with 5 tables (IitProject, IitPendingAction, IitTaskRun, IitUserMapping, IitAuditLog)
+- Include V1.1 new fields: cachedRules, lastSyncAt, miniProgramOpenId
+- Database sync successful (prisma db push)
+- Prisma Client generated
+- CRUD tests passed (all 5 tables verified)
+
+Module Structure:
+- Create backend/src/modules/iit-manager/ with 7 subdirectories
+- Implement types/index.ts with 223 lines of TypeScript definitions
+- Create routes/index.ts with health check endpoint (/api/v1/iit/health)
+- Add test scripts: test-iit-database.ts (passed), test-wechat-push.ts (Access Token verified)
+
+System Integration:
+- Register IIT routes in backend/src/index.ts
+- Add WeChat config to backend/src/config/env.ts (wechatCorpId, wechatCorpSecret, wechatAgentId)
+- Health check endpoint working
+
+WeChat Enterprise Integration:
+- Successfully registered WeChat Enterprise app: IIT Manager Agent
+- CorpID: ww6ab493470ab4f377, AgentID: 1000002
+- Access Token retrieval successful (core verification passed)
+- IP whitelist issue noted (does not affect development)
+
+Documentation:
+- Update system status doc (v2.3 -> v2.4, add IIT module overview)
+- Create complete IIT Manager Agent doc structure (00-system-design, 02-tech-design, 04-dev-plan, 06-dev-log)
+- Technical development plan V1.1 (2170 lines, architectural review corrections integrated)
+- MVP development task list (615 lines, 14-day sprint plan)
+- WeChat registration guide (209 lines)
+
+Architecture Highlights (V1.1):
+- Hybrid sync mode: Webhook + Polling (99.9% reliability)
+- Postgres-Only architecture: Reuse platform cache and pg-boss queue
+- Shadow state mechanism: PROPOSED -> APPROVED -> EXECUTED workflow
+- Dify RAG integration: Protocol knowledge retrieval + rule pre-caching
+- Frontend stack: Taro 4.x (React syntax, supports mini-program + H5)
+
+Files Created:
+- backend/prisma/schema.prisma (add iit_schema)
+- backend/src/modules/iit-manager/* (complete module structure)
+- backend/src/config/env.ts (add WeChat config)
+- docs/03-业务模块/IIT Manager Agent/* (complete documentation)
+- docs/00-系统总体设计/00-系统当前状态与开发指南.md (update to v2.4)
+
+Testing Results:
+- Database CRUD: All 5 tables passed
+- System integration: Health check endpoint working
+- WeChat API: Access Token retrieved successfully
+
+Status: Day 1 complete (11/11 tasks, 100%), ready for Day 2 REDCap integration"
+
+# Push to remote
+git push origin master
+
+Write-Host "Git commit and push completed!" -ForegroundColor Green
+