新功能：个性化推荐算法

client/app/(app)/home.tsx

@@ -14,12 +14,20 @@ import Animated, {
 import { MOCK_CONTENT } from '@/src/constants/mockContent';
 import {
   addFavorite,
+  getRecoFeedCache,
+  getRecoFeedHistory,
   getThemeMode,
   getUserProfile,
+  getUserProfileScoring,
+  recordRecoFeedServed,
+  recordRecoFeedTouched,
+  setRecoFeedCache,
   setReaction,
   setThemeMode,
+  type RecoFeedCacheItem,
   type ThemeMode,
 } from '@/src/storage/appStorage';
+import { fetchRecoFeed } from '@/src/services/recoApi';
 
 import ProfileModal from '@/components/home/ProfileModal';
 import ThemeModal from '@/components/home/ThemeModal';
@@ -41,8 +49,11 @@ export default function HomeScreen() {
   const [profileName, setProfileName] = useState<string | undefined>(undefined);
   const [busy, setBusy] = useState(false);
   const [likeFilled, setLikeFilled] = useState(false);
+  const [feedItems, setFeedItems] = useState<Array<{ content_id: number; text: string }>>([]);
 
-  const item = useMemo(() => MOCK_CONTENT[index % MOCK_CONTENT.length], [index]);
+  const currentList = feedItems.length > 0 ? feedItems : MOCK_CONTENT;
+  const item = useMemo(() => currentList[index % currentList.length], [currentList, index]);
+  const currentContentId = typeof (item as any)?.content_id === 'number' ? Number((item as any).content_id) : null;
 
   // 动画相关 Shared Values
   const translateY = useSharedValue(0);
@@ -66,6 +77,55 @@ export default function HomeScreen() {
     }, [])
   );
 
+  // 首次进入：先读缓存，再拉后端 feed（失败则保持 mock/缓存）
+  useEffect(() => {
+    let cancelled = false;
+    (async () => {
+      const cache = await getRecoFeedCache();
+      if (!cancelled && cache?.items?.length) {
+        setFeedItems(cache.items.map((x: RecoFeedCacheItem) => ({ content_id: x.content_id, text: x.text })));
+      }
+
+      const scoring = await getUserProfileScoring();
+      if (!scoring) return;
+
+      try {
+        const hist = await getRecoFeedHistory();
+        const out = await fetchRecoFeed({
+          k: 30,
+          user_profile: {
+            profile_version: scoring.profile_version,
+            profile_source: scoring.profile_source,
+            profile_generated_at: scoring.profile_generated_at,
+            profile_confidence: scoring.profile_confidence,
+            profile_answered: scoring.profile_answered,
+            stage: scoring.stage,
+            emotion_score: scoring.emotion_score,
+            context: scoring.context,
+            need: scoring.need,
+          },
+          already_recommended_ids: hist.already_recommended_ids,
+          touched_or_viewed_ids: hist.touched_or_viewed_ids,
+        });
+
+        if (!cancelled && out.items?.length) {
+          setFeedItems(out.items.map((x) => ({ content_id: x.content_id, text: x.text })));
+          await setRecoFeedCache({
+            saved_at: new Date().toISOString(),
+            items: out.items.map((x) => ({ content_id: x.content_id, text: x.text })),
+            meta: out.meta as Record<string, unknown>,
+          });
+          await recordRecoFeedServed(out.items.map((x) => x.content_id));
+        }
+      } catch {
+        // 忽略：保持缓存/本地 mock
+      }
+    })();
+    return () => {
+      cancelled = true;
+    };
+  }, []);
+
   const backgroundColor = themeMode === 'color' ? '#F3D0E1' : '#F4D6C2';
 
   useLayoutEffect(() => {
@@ -105,6 +165,11 @@ export default function HomeScreen() {
     if (busy) return;
     setBusy(true);
 
+    // 记录“看过/划过”的内容 id（用于下一次向后端请求时去重/频控）
+    if (typeof currentContentId === 'number') {
+      void recordRecoFeedTouched(currentContentId);
+    }
+
     // 1. 当前文案向上移动并消失
     translateY.value = withTiming(-40, { duration: 300, easing: Easing.out(Easing.quad) });
     opacity.value = withTiming(0, { duration: 300 }, (finished) => {
@@ -125,7 +190,7 @@ export default function HomeScreen() {
         });
       }
     });
-  }, [busy, index, translateY, opacity]);
+  }, [busy, currentContentId, index, translateY, opacity]);
 
   const lastTapRef = useRef<number>(0);
   
@@ -176,7 +241,7 @@ export default function HomeScreen() {
 
     // 2. 保存到收藏夹，包含当前背景信息
     await addFavorite({
-      id: item.id,
+      id: typeof currentContentId === 'number' ? String(currentContentId) : (item as any).id,
       date: dateStr,
       themeMode: themeMode,
       background: backgroundColor, // 目前存储的是颜色值