feat: Round 5 - Memory Service, Tool Engine, Call Records, Thinking Logs

- Fix: Session history flash (race condition + WS guard)
- Fix: Chat background overlay + sidebar transparency
- Fix: IoT device control (Chinese action names, status field)
- Feat: Independent memory-service (port 8091, 13 endpoints)
- Feat: Independent tool-engine service (port 8092, 13 tools)
- Feat: Tool call logs with paginated DevTools panel
- Feat: Thinking log records with DevTools panel
- Feat: Future development roadmap document
- Chore: Updated .gitignore, go.work, DevTools config
- Chore: 5-service health check, project review docs

frontend/web/src/components/layout/Sidebar.tsx

@@ -98,7 +98,7 @@ export function Sidebar({ onClose }: SidebarProps) {
   };
 
   return (
-    <aside className="h-full bg-white/90 dark:bg-gray-900/90 border-r border-pink-100 dark:border-pink-900 flex flex-col">
+    <aside className="h-full bg-white/70 dark:bg-gray-900/70 backdrop-blur-md border-r border-pink-100 dark:border-pink-900 flex flex-col">
       {/* 主对话按钮 (仅管理员可见) */}
       {isAdmin && (
         <div className="p-3 border-b border-pink-100 dark:border-pink-900 flex gap-2">