feat(logs): redesign LogsPage with structured log parsing and virtual scrolling

- Add log line parser to extract timestamp, level, status code, latency, IP, HTTP method, and path
  - Implement virtual scrolling with load-more on scroll-up to handle large log files efficiently
  - Replace monolithic pre block with structured grid layout for better readability
  - Add visual badges for log levels and HTTP status codes with color-coded severity
  - Add IconRefreshCw icon component
  - Update ToggleSwitch to accept ReactNode as label
  - Fix fetchConfig calls to use default parameters consistently
  - Add request deduplication in useConfigStore to prevent duplicate /config API calls
  - Add i18n keys for load_more_hint and hidden_lines

src/components/ui/ToggleSwitch.tsx

@@ -1,9 +1,9 @@
-import type { ChangeEvent } from 'react';
+import type { ChangeEvent, ReactNode } from 'react';
 
 interface ToggleSwitchProps {
   checked: boolean;
   onChange: (value: boolean) => void;
-  label?: string;
+  label?: ReactNode;
   disabled?: boolean;
 }
 

src/components/ui/icons.tsx

@@ -117,6 +117,15 @@ export function IconInfo({ size = 20, ...props }: IconProps) {
   );
 }
 
+export function IconRefreshCw({ size = 20, ...props }: IconProps) {
+  return (
+    <svg {...baseSvgProps} width={size} height={size} {...props}>
+      <path d="M21 12a9 9 0 1 1-9-9c2.52 0 4.93 1 6.74 2.74L21 8" />
+      <path d="M21 3v5h-5" />
+    </svg>
+  );
+}
+
 export function IconDownload({ size = 20, ...props }: IconProps) {
   return (
     <svg {...baseSvgProps} width={size} height={size} {...props}>
@@ -257,4 +266,3 @@ export function IconDollarSign({ size = 20, ...props }: IconProps) {
     </svg>
   );
 }
-