feat(platform): Complete Postgres-Only architecture refactoring (Phase 1-7)

Major Changes:
- Implement Platform-Only architecture pattern (unified task management)
- Add PostgresCacheAdapter for unified caching (platform_schema.app_cache)
- Add PgBossQueue for job queue management (platform_schema.job)
- Implement CheckpointService using job.data (generic for all modules)
- Add intelligent threshold-based dual-mode processing (THRESHOLD=50)
- Add task splitting mechanism (auto chunk size recommendation)
- Refactor ASL screening service with smart mode selection
- Refactor DC extraction service with smart mode selection
- Register workers for ASL and DC modules

Technical Highlights:
- All task management data stored in platform_schema.job.data (JSONB)
- Business tables remain clean (no task management fields)
- CheckpointService is generic (shared by all modules)
- Zero code duplication (DRY principle)
- Follows 3-layer architecture principle
- Zero additional cost (no Redis needed, save 8400 CNY/year)

Code Statistics:
- New code: ~1750 lines
- Modified code: ~500 lines
- Test code: ~1800 lines
- Documentation: ~3000 lines

Testing:
- Unit tests: 8/8 passed
- Integration tests: 2/2 passed
- Architecture validation: passed
- Linter errors: 0

Files:
- Platform layer: PostgresCacheAdapter, PgBossQueue, CheckpointService, utils
- ASL module: screeningService, screeningWorker
- DC module: ExtractionController, extractionWorker
- Tests: 11 test files
- Docs: Updated 4 key documents

Status: Phase 1-7 completed, Phase 8-9 pending

deploy-to-sae.ps1

@@ -0,0 +1,136 @@
+# ===================================================================
+# AI临床研究平台 - SAE部署自动化脚本
+# ===================================================================
+# 用途：自动构建Docker镜像并推送到阿里云容器镜像服务
+# 使用方法：.\deploy-to-sae.ps1 -Version "v1.0.0"
+# 作者：技术架构师
+# 日期：2025-12-11
+# ===================================================================
+
+param(
+    [Parameter(Mandatory=$true)]
+    [string]$Version,
+    
+    [Parameter(Mandatory=$false)]
+    [string]$Registry = "registry.cn-hangzhou.aliyuncs.com",
+    
+    [Parameter(Mandatory=$false)]
+    [string]$Namespace = "aiclinical",
+    
+    [Parameter(Mandatory=$false)]
+    [string]$Repository = "backend-dev"
+)
+
+# 颜色输出函数
+function Write-ColorOutput($ForegroundColor) {
+    $fc = $host.UI.RawUI.ForegroundColor
+    $host.UI.RawUI.ForegroundColor = $ForegroundColor
+    if ($args) {
+        Write-Output $args
+    }
+    $host.UI.RawUI.ForegroundColor = $fc
+}
+
+# 标题
+Write-ColorOutput Cyan "================================================"
+Write-ColorOutput Cyan "   AI临床研究平台 - SAE部署脚本"
+Write-ColorOutput Cyan "================================================"
+Write-Host ""
+
+# 检查Docker是否运行
+Write-ColorOutput Yellow "🔍 检查Docker状态..."
+try {
+    docker ps > $null 2>&1
+    if ($LASTEXITCODE -ne 0) {
+        Write-ColorOutput Red "❌ Docker未运行，请先启动Docker Desktop"
+        exit 1
+    }
+    Write-ColorOutput Green "✅ Docker运行正常"
+} catch {
+    Write-ColorOutput Red "❌ Docker未安装或未运行"
+    exit 1
+}
+
+# 构建镜像
+Write-Host ""
+Write-ColorOutput Yellow "🔨 开始构建Docker镜像..."
+Write-Host "版本: $Version"
+Write-Host "目录: backend/"
+Write-Host ""
+
+Set-Location backend
+
+$imageName = "aiclinical-backend"
+$fullImageName = "${Registry}/${Namespace}/${Repository}:${Version}"
+
+Write-ColorOutput Cyan "执行: docker build -t ${imageName}:${Version} ."
+docker build -t "${imageName}:${Version}" .
+
+if ($LASTEXITCODE -ne 0) {
+    Write-ColorOutput Red "❌ Docker镜像构建失败"
+    exit 1
+}
+
+Write-ColorOutput Green "✅ Docker镜像构建成功"
+
+# 打标签
+Write-Host ""
+Write-ColorOutput Yellow "🏷️  为镜像打标签..."
+Write-ColorOutput Cyan "执行: docker tag ${imageName}:${Version} ${fullImageName}"
+docker tag "${imageName}:${Version}" $fullImageName
+
+if ($LASTEXITCODE -ne 0) {
+    Write-ColorOutput Red "❌ 打标签失败"
+    exit 1
+}
+
+Write-ColorOutput Green "✅ 标签创建成功"
+
+# 推送镜像
+Write-Host ""
+Write-ColorOutput Yellow "📤 推送镜像到阿里云..."
+Write-Host "目标仓库: $fullImageName"
+Write-Host ""
+Write-ColorOutput Cyan "提示：如果提示需要登录，请执行以下命令："
+Write-ColorOutput Cyan "docker login --username=<你的阿里云账号> ${Registry}"
+Write-Host ""
+
+Write-ColorOutput Cyan "执行: docker push ${fullImageName}"
+docker push $fullImageName
+
+if ($LASTEXITCODE -ne 0) {
+    Write-ColorOutput Red "❌ 镜像推送失败"
+    Write-ColorOutput Yellow "请检查："
+    Write-Host "  1. 是否已登录阿里云容器镜像服务"
+    Write-Host "  2. 命名空间和仓库名称是否正确"
+    Write-Host "  3. 网络连接是否正常"
+    exit 1
+}
+
+Write-ColorOutput Green "✅ 镜像推送成功"
+
+# 完成
+Write-Host ""
+Write-ColorOutput Cyan "================================================"
+Write-ColorOutput Green "🎉 部署准备完成！"
+Write-ColorOutput Cyan "================================================"
+Write-Host ""
+Write-Host "镜像信息："
+Write-ColorOutput Cyan "  完整地址: $fullImageName"
+Write-ColorOutput Cyan "  版本号: $Version"
+Write-Host ""
+Write-Host "下一步操作："
+Write-Host "  1. 登录阿里云SAE控制台"
+Write-Host "  2. 进入应用 '${Repository}'"
+Write-Host "  3. 点击'部署应用'"
+Write-Host "  4. 选择镜像版本: $Version"
+Write-Host "  5. 点击'确定'开始部署"
+Write-Host ""
+Write-ColorOutput Cyan "部署文档: docs/05-部署文档/02-SAE部署完全指南(产品经理版).md"
+Write-Host ""
+
+Set-Location ..
+
+
+
+