♻️ refactor: reorganize project structure and centralize search engine config

- Move all source files from root to src/ directory for better organization
- Create src/config/searchEngines.ts to centralize search engine configurations
  - Define unified SearchEngineConfig interface
  - Support both JSONP and Fetch request methods
  - Implement response parsers for Google, Baidu, Bing, DuckDuckGo, and Bilibili
- Refactor src/utils/suggestions.ts to use centralized config
  - Simplify code from 126 lines to 81 lines
  - Support hybrid JSONP/Fetch mode (Bilibili uses Fetch via Vite proxy)
  - Remove duplicate URL construction and parsing logic
- Update path alias configuration
  - Change @/* from ./* to ./src/* in tsconfig.json
  - Update vite.config.ts alias to point to ./src
- Add Bilibili proxy configuration in vite.config.ts for development
- Remove Bilibili rewrites from vercel.json (use Vite proxy instead)
- Add @vercel/node to devDependencies
- Remove unused files: README.md, i18n/README.md, metadata.json, vite-env.d.ts

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/components/Clock.tsx

@@ -0,0 +1,78 @@
+import React, { useState, useEffect } from 'react';
+import { useTranslation } from '../i18n';
+
+interface ClockProps {
+  showSeconds?: boolean;
+  use24HourFormat?: boolean;
+}
+
+const Clock: React.FC<ClockProps> = ({ showSeconds = true, use24HourFormat = true }) => {
+  const [time, setTime] = useState(new Date());
+  const { language } = useTranslation();
+
+  useEffect(() => {
+    const timer = setInterval(() => {
+      setTime(new Date());
+    }, 1000);
+
+    return () => clearInterval(timer);
+  }, []);
+
+  const rawHours = time.getHours();
+  const rawMinutes = time.getMinutes();
+  const rawSeconds = time.getSeconds();
+
+  let displayHours = rawHours;
+  let ampm = '';
+
+  if (!use24HourFormat) {
+    displayHours = rawHours % 12 || 12; // Convert 0 to 12
+    ampm = rawHours >= 12 ? 'PM' : 'AM';
+  }
+
+  const hoursStr = displayHours.toString().padStart(2, '0');
+  const minutesStr = rawMinutes.toString().padStart(2, '0');
+  const secondsStr = rawSeconds.toString().padStart(2, '0');
+
+  return (
+    <div className="flex flex-col items-center select-none text-white drop-shadow-2xl">
+      <div className="flex items-baseline font-light tracking-tight">
+        {/* Hours */}
+        <span className="text-5xl md:text-6xl lg:text-7xl font-sans font-extralight tracking-tighter tabular-nums text-white/95">
+          {hoursStr}
+        </span>
+
+        {/* Separator */}
+        <span className="text-4xl md:text-5xl lg:text-6xl px-2 md:px-4 text-white/60 animate-pulse -translate-y-1 md:-translate-y-2">
+          :
+        </span>
+
+        {/* Minutes */}
+        <span className="text-5xl md:text-6xl lg:text-7xl font-sans font-extralight tracking-tighter tabular-nums text-white/95">
+          {minutesStr}
+        </span>
+
+        {/* Seconds (Optional small display) */}
+        {showSeconds && (
+          <span className="ml-2 md:ml-3 text-xl md:text-2xl lg:text-3xl font-mono text-white/60 font-light w-12 tabular-nums">
+            {secondsStr}
+          </span>
+        )}
+
+        {/* AM/PM Indicator */}
+        {!use24HourFormat && (
+           <span className="ml-2 md:ml-3 text-lg md:text-xl font-light text-white/60 self-end mb-2 md:mb-3">
+             {ampm}
+           </span>
+        )}
+      </div>
+
+      {/* Date Display */}
+      <div className="mt-4 text-lg md:text-xl font-light text-white/70 tracking-widest uppercase">
+        {time.toLocaleDateString(language === 'zh' ? 'zh-CN' : 'en-US', { weekday: 'long', month: 'long', day: 'numeric' })}
+      </div>
+    </div>
+  );
+};
+
+export default Clock;