fix(web): 前端功能验证修复 — 移除硬编码假数据/修正系统信息/修复dev.ps1环境变量

- refactor(Home): 待办任务改为从工作流API获取真实数据
- refactor(Home): 最近动态改为从审计日志API获取真实操作记录
- refactor(Home): 移除硬编码的sparkline趋势图和假统计数据
- fix(Home): 系统信息 PostgreSQL 16→18，模块数量 5→6
- fix(Login): 移除硬编码版本号 v0.1.0
- fix(MainLayout): Footer 更新为 "HMS 健康管理平台"
- fix(dev.ps1): 添加缺失的 WECHAT/HEALTH 环境变量

dev.ps1

@@ -19,6 +19,16 @@ $BackendPort  = 3000
 $FrontendPort = 5174
 $LogDir       = ".logs"
 
+# --- environment variables ---
+$env:ERP__DATABASE__URL            = "postgres://postgres:123123@localhost:5432/erp"
+$env:ERP__JWT__SECRET              = "dev-secret-key-change-in-prod"
+$env:ERP__AUTH__SUPER_ADMIN_PASSWORD = "Admin@2026"
+$env:ERP__REDIS__URL               = "redis://:redis_KBCYJk@129.204.154.246:6379"
+$env:ERP__WECHAT__APPID            = "wx20f4ef9cc2ec66c5"
+$env:ERP__WECHAT__SECRET           = "placeholder_wechat_secret"
+$env:ERP__HEALTH__AES_KEY          = "a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2"
+$env:ERP__HEALTH__HMAC_KEY         = "f6e5d4c3b2a1f6e5d4c3b2a1f6e5d4c3b2a1f6e5d4c3b2a1f6e5d4c3b2a1f6e5"
+
 # --- find PID using port ---
 function Find-PortPid([int]$Port) {
     try {
@@ -135,7 +145,9 @@ function Start-Services {
     $backendLog = Join-Path $LogDir "backend.log"
     $backendErr = Join-Path $LogDir "backend.err"
 
+    $backendDir = Join-Path $PSScriptRoot "crates\erp-server"
     $proc = Start-Process -FilePath "cargo" -ArgumentList "run","-p","erp-server" `
+        -WorkingDirectory $backendDir `
         -RedirectStandardOutput $backendLog -RedirectStandardError $backendErr `
         -WindowStyle Hidden -PassThru