Add VitePress site with local login and deployment docs

Enable static site build on port 12100 with Express session auth, auto sidebar, and DEPLOY.md for Ubuntu/NPS setup.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/prepare-public.mjs

@@ -0,0 +1,34 @@
+import fs from 'node:fs'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+
+const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..')
+const publicDir = path.join(root, '.vitepress', 'public')
+
+function copyDir(source, target) {
+  if (!fs.existsSync(source)) return
+  fs.mkdirSync(target, { recursive: true })
+
+  for (const entry of fs.readdirSync(source, { withFileTypes: true })) {
+    const from = path.join(source, entry.name)
+    const to = path.join(target, entry.name)
+    if (entry.isDirectory()) {
+      copyDir(from, to)
+    } else {
+      fs.copyFileSync(from, to)
+    }
+  }
+}
+
+function resetPublicDir() {
+  if (fs.existsSync(publicDir)) {
+    fs.rmSync(publicDir, { recursive: true, force: true })
+  }
+  fs.mkdirSync(publicDir, { recursive: true })
+}
+
+resetPublicDir()
+copyDir(path.join(root, 'assets'), path.join(publicDir, 'assets'))
+copyDir(path.join(root, 'images'), path.join(publicDir, 'images'))
+
+console.log('[prepare-public] assets 与 images 已同步到 .vitepress/public')