feat: 增加收藏、下载种子数据功能

cloudfunctions/ageRecommendedQuery/index.js

@@ -35,6 +35,13 @@ function difficultyLabel(difficulty) {
     return DIFFICULTY_LABELS[difficulty] || '基础';
 }
 
+function mergeSeedStats(items) {
+    for (const item of items) {
+        item.likes = (item.likes || 0) + (item.likes_seed || 0);
+        item.downloads = (item.downloads || 0) + (item.downloads_seed || 0);
+    }
+}
+
 function toRecommendedItem(ws) {
     return {
         worksheetId: ws._id,
@@ -118,6 +125,7 @@ exports.main = async (event) => {
         const band = AGE_BANDS[ageKey];
         const db = cloud.database();
         const activeWorksheets = await queryActiveWorksheets(db);
+        mergeSeedStats(activeWorksheets);
         const matchedWorksheets = activeWorksheets.filter((ws) =>
             coversAgeBand(ws, band),
         );