修改了主题切换的问题，但登录故障问题还有残留

compress-images.js

@@ -0,0 +1,98 @@
+const sharp = require('sharp')
+const fs = require('fs')
+const path = require('path')
+
+const IMG_DIR = path.join(__dirname, 'src', 'img')
+const QUALITY = 60       // JPG 质量
+const MAX_WIDTH = 800    // 最长边限制
+const MAX_FILE_KB = 80   // 单张上限 KB —— 强制压到 80KB 以下
+
+/**
+ * 压缩单个文件（强制覆盖）
+ */
+async function compressFile(inputPath) {
+  const ext = path.extname(inputPath).toLowerCase()
+  const dir = path.dirname(inputPath)
+  const base = path.basename(inputPath, ext)
+  const finalPath = path.join(dir, base + '.jpg')
+  const isAlreadyJpg = ext === '.jpg' || ext === '.jpeg'
+
+  const stat = fs.statSync(inputPath)
+  const currentKb = stat.size / 1024
+
+  // 如果已经 .jpg、体积已小于上限、且最长边不超，跳过
+  if (isAlreadyJpg && currentKb <= MAX_FILE_KB) {
+    const meta = await sharp(inputPath).metadata()
+    const longEdge = Math.max(meta.width || 0, meta.height || 0)
+    if (longEdge <= MAX_WIDTH) {
+      console.log(`skip ${inputPath} (${currentKb.toFixed(1)}KB, ${longEdge}px)`)
+      return { from: inputPath, to: inputPath, size: stat.size }
+    }
+  }
+
+  // 重建 pipeline
+  const meta = await sharp(inputPath).metadata()
+  const longEdge = Math.max(meta.width || 0, meta.height || 0)
+  const resizeOpts = longEdge > MAX_WIDTH ? { width: MAX_WIDTH, height: MAX_WIDTH, fit: 'inside' } : undefined
+
+  let pipeline = sharp(inputPath).jpeg({ quality: QUALITY, progressive: true, force: true })
+  if (resizeOpts) pipeline = pipeline.resize(resizeOpts)
+
+  const tmpPath = path.join(dir, base + '_tmp.jpg')
+  await pipeline.toFile(tmpPath)
+
+  fs.unlinkSync(inputPath)
+  fs.renameSync(tmpPath, finalPath)
+
+  const newSize = fs.statSync(finalPath).size
+  console.log(
+    `${isAlreadyJpg ? 'compress' : 'convert'} ${base}${ext}  (${currentKb.toFixed(1)}KB, ${longEdge}px → ${(newSize / 1024).toFixed(1)}KB)`
+  )
+
+  return { from: inputPath, to: finalPath, size: newSize }
+}
+
+/**
+ * 递归收集所有图片
+ */
+function collectImages(dir) {
+  let results = []
+  const entries = fs.readdirSync(dir, { withFileTypes: true })
+  for (const entry of entries) {
+    const full = path.join(dir, entry.name)
+    if (entry.isDirectory()) {
+      results = results.concat(collectImages(full))
+    } else if (/\.(png|jpe?g)$/i.test(entry.name)) {
+      results.push(full)
+    }
+  }
+  return results
+}
+
+/**
+ * 主函数
+ */
+async function main() {
+  console.log(`scanning ${IMG_DIR}...\n`)
+  const images = collectImages(IMG_DIR)
+  console.log(`found ${images.length} images\n`)
+
+  let totalBefore = 0
+  let totalAfter = 0
+
+  for (const img of images) {
+    totalBefore += fs.statSync(img).size
+    const result = await compressFile(img)
+    totalAfter += result.size
+  }
+
+  console.log(`\n✅ done`)
+  console.log(`   before: ${(totalBefore / 1024 / 1024).toFixed(2)} MB`)
+  console.log(`   after:  ${(totalAfter / 1024 / 1024).toFixed(2)} MB`)
+  console.log(`   saved:  ${((totalBefore - totalAfter) / 1024 / 1024).toFixed(2)} MB`)
+}
+
+main().catch(err => {
+  console.error(err)
+  process.exit(1)
+})