Update README and project cleanup

scripts/fix-tag-coverage.js

@@ -0,0 +1,84 @@
+/**
+ * 修复标签覆盖率统计
+ * 更新所有标签的coverage和coverage_rate字段
+ */
+
+const { getDb } = require('../db/init');
+
+function updateTagStats(dbSuffix = 'onion') {
+  const db = getDb(dbSuffix);
+  
+  try {
+    // 获取总用户数
+    const totalUsersRow = db.prepare('SELECT COUNT(*) as n FROM users').get();
+    const totalUsers = totalUsersRow.n;
+    
+    if (totalUsers === 0) {
+      console.error('❌ 没有用户数据');
+      return;
+    }
+    
+    console.log(`\n🔄 更新标签覆盖率统计（总用户数: ${totalUsers}）`);
+    
+    // 获取所有标签
+    const tags = db.prepare('SELECT id FROM tags').all();
+    
+    let updated = 0;
+    const stmt = db.prepare(`
+      UPDATE tags SET coverage = ?, coverage_rate = ? WHERE id = ?
+    `);
+    
+    for (const tag of tags) {
+      // 计算该标签的覆盖用户数
+      const coverageRow = db.prepare(`
+        SELECT COUNT(DISTINCT user_id) as cnt FROM user_tags WHERE tag_id = ?
+      `).get(tag.id);
+      
+      const coverage = coverageRow.cnt || 0;
+      const coverage_rate = totalUsers > 0 ? +(coverage / totalUsers * 100).toFixed(2) : 0;
+      
+      stmt.run(coverage, coverage_rate, tag.id);
+      updated++;
+      
+      if (updated % 50 === 0) {
+        console.log(`  ✓ 已更新 ${updated} 个标签...`);
+      }
+    }
+    
+    console.log(`\n✅ 更新完成: ${updated} 个标签\n`);
+    
+    // 显示样本
+    console.log('📊 样本数据（前5个标签）:');
+    const samples = db.prepare(`
+      SELECT id, name, coverage, coverage_rate FROM tags LIMIT 5
+    `).all();
+    
+    for (const sample of samples) {
+      console.log(`  • ${sample.name}: ${sample.coverage} users (${sample.coverage_rate}%)`);
+    }
+    
+    // 显示统计
+    console.log('\n📊 整体统计:');
+    const stats = db.prepare(`
+      SELECT 
+        MIN(coverage) as min_coverage,
+        MAX(coverage) as max_coverage,
+        ROUND(AVG(coverage), 2) as avg_coverage,
+        COUNT(*) as total_tags
+      FROM tags
+    `).get();
+    
+    console.log(`  • 总标签数: ${stats.total_tags}`);
+    console.log(`  • 覆盖范围: ${stats.min_coverage} - ${stats.max_coverage} 用户`);
+    console.log(`  • 平均覆盖: ${stats.avg_coverage} 用户`);
+    
+    db.close();
+  } catch (e) {
+    console.error('❌ 错误:', e.message);
+    db.close();
+    process.exit(1);
+  }
+}
+
+// 执行更新
+updateTagStats();