fix: fetch 后检查 res.ok 并校验数组类型，防止错误响应导致崩溃

- panic/page.tsx: suggestions fetch 检查 res.ok + Array.isArray
- profile/page.tsx: history/favorites fetch 检查 res.ok + Array.isArray

src/app/panic/page.tsx

@@ -70,9 +70,10 @@ export default function PanicPage() {
     setFetchingSuggestions(true);
     try {
       const res = await fetch(`/api/location/suggest?keywords=${encodeURIComponent(query)}`);
+      if (!res.ok) { setSuggestions([]); setShowSuggestions(false); return; }
       const data: LocationSuggestion[] = await res.json();
-      setSuggestions(data);
+      setSuggestions(Array.isArray(data) ? data : []);
-      setShowSuggestions(data.length > 0);
+      setShowSuggestions(Array.isArray(data) && data.length > 0);
     } catch {
       setSuggestions([]);
     } finally {

src/app/profile/page.tsx

@@ -93,15 +93,15 @@ export default function ProfilePage() {
 
     setHistoryLoading(true);
     fetch(`/api/user/history?userId=${userId}`)
-      .then((r) => r.json())
+      .then((r) => { if (!r.ok) throw new Error(); return r.json(); })
-      .then(setHistory)
+      .then((data) => setHistory(Array.isArray(data) ? data : []))
       .catch(() => {})
       .finally(() => setHistoryLoading(false));
 
     setFavLoading(true);
     fetch(`/api/user/favorite?userId=${userId}`)
-      .then((r) => r.json())
+      .then((r) => { if (!r.ok) throw new Error(); return r.json(); })
-      .then(setFavorites)
+      .then((data) => setFavorites(Array.isArray(data) ? data : []))
       .catch(() => {})
       .finally(() => setFavLoading(false));
   }, [userId]);