feat: initialize zhixing-web with React, React Router, and Tailwind CSS

- Set up the main application structure with App component and routing.
- Implemented global state management for UI theme using Zustand.
- Created API utilities for fetching system status.
- Developed system status page with responsive design and theme toggle.
- Added testing setup with Vitest and initial tests for system status page.
- Configured TypeScript with appropriate settings for the application.
- Integrated Tailwind CSS for styling and responsive design.
- Established Vite configuration for development and testing environments.

zhixing-web/src/styles/globals.css

@@ -0,0 +1,72 @@
+@import "tailwindcss";
+
+@custom-variant dark (&:is(.dark *));
+
+@theme inline {
+  --color-background: var(--background);
+  --color-foreground: var(--foreground);
+  --color-card: var(--card);
+  --color-card-foreground: var(--card-foreground);
+  --color-primary: var(--primary);
+  --color-primary-foreground: var(--primary-foreground);
+  --color-muted: var(--muted);
+  --color-muted-foreground: var(--muted-foreground);
+  --color-accent: var(--accent);
+  --color-accent-foreground: var(--accent-foreground);
+  --color-destructive: var(--destructive);
+  --radius-sm: calc(var(--radius) - 4px);
+  --radius-md: calc(var(--radius) - 2px);
+  --radius-lg: var(--radius);
+  --radius-xl: calc(var(--radius) + 4px);
+}
+
+:root {
+  --background: oklch(0.985 0.002 247.839);
+  --foreground: oklch(0.145 0.015 252.417);
+  --card: oklch(1 0 0);
+  --card-foreground: oklch(0.145 0.015 252.417);
+  --primary: oklch(0.488 0.243 264.376);
+  --primary-foreground: oklch(0.97 0.014 254.604);
+  --muted: oklch(0.968 0.007 247.896);
+  --muted-foreground: oklch(0.554 0.046 257.417);
+  --accent: oklch(0.932 0.032 255.585);
+  --accent-foreground: oklch(0.279 0.041 260.031);
+  --destructive: oklch(0.577 0.245 27.325);
+  --radius: 0.75rem;
+}
+
+.dark {
+  --background: oklch(0.129 0.042 264.695);
+  --foreground: oklch(0.984 0.003 247.858);
+  --card: oklch(0.208 0.042 265.755);
+  --card-foreground: oklch(0.984 0.003 247.858);
+  --primary: oklch(0.707 0.165 254.624);
+  --primary-foreground: oklch(0.208 0.042 265.755);
+  --muted: oklch(0.279 0.041 260.031);
+  --muted-foreground: oklch(0.704 0.04 256.788);
+  --accent: oklch(0.279 0.041 260.031);
+  --accent-foreground: oklch(0.984 0.003 247.858);
+  --destructive: oklch(0.704 0.191 22.216);
+}
+
+@layer base {
+  * {
+    @apply border-slate-200 dark:border-slate-800;
+  }
+
+  body {
+    @apply m-0 bg-background text-foreground antialiased;
+    font-family:
+      Inter,
+      ui-sans-serif,
+      system-ui,
+      -apple-system,
+      BlinkMacSystemFont,
+      "Segoe UI",
+      sans-serif;
+  }
+
+  button {
+    font: inherit;
+  }
+}