fix: proxy B站图片 CDN 解决 web 端防盗链图片不显示问题

- dev-proxy.js 新增 /bilibili-img 路由，代理 *.hdslb.com 并注入正确 Referer
- utils/imageUrl.ts 新增 proxyImageUrl()，web 端将图片 URL 转为本地代理地址
- VideoCard / CommentItem / MiniPlayer / [bvid] 对所有 B站图片应用 proxyImageUrl

components/CommentItem.tsx

@@ -3,13 +3,14 @@ import { View, Text, Image, StyleSheet } from 'react-native';
 import { Ionicons } from '@expo/vector-icons';
 import type { Comment } from '../services/types';
 import { formatTime } from '../utils/format';
+import { proxyImageUrl } from '../utils/imageUrl';
 
 interface Props { item: Comment; }
 
 export function CommentItem({ item }: Props) {
   return (
     <View style={styles.row}>
-      <Image source={{ uri: item.member.avatar }} style={styles.avatar} />
+      <Image source={{ uri: proxyImageUrl(item.member.avatar) }} style={styles.avatar} />
       <View style={styles.content}>
         <Text style={styles.username}>{item.member.uname}</Text>
         <Text style={styles.message}>{item.content.message}</Text>

components/MiniPlayer.tsx

@@ -7,6 +7,7 @@ import { useRouter } from 'expo-router';
 import { useSafeAreaInsets } from 'react-native-safe-area-context';
 import { Ionicons } from '@expo/vector-icons';
 import { useVideoStore } from '../store/videoStore';
+import { proxyImageUrl } from '../utils/imageUrl';
 
 export function MiniPlayer() {
   const { isActive, bvid, title, cover, clearVideo } = useVideoStore();
@@ -42,7 +43,7 @@ export function MiniPlayer() {
         onPress={() => router.push(`/video/${bvid}` as any)}
         activeOpacity={0.85}
       >
-        <Image source={{ uri: cover }} style={styles.cover} />
+        <Image source={{ uri: proxyImageUrl(cover) }} style={styles.cover} />
         <Text style={styles.title} numberOfLines={1}>{title}</Text>
       </TouchableOpacity>
       <TouchableOpacity style={styles.closeBtn} onPress={clearVideo}>

components/VideoCard.tsx

@@ -3,6 +3,7 @@ import { View, Text, Image, TouchableOpacity, StyleSheet, Dimensions } from 'rea
 import { Ionicons } from '@expo/vector-icons';
 import type { VideoItem } from '../services/types';
 import { formatCount, formatDuration } from '../utils/format';
+import { proxyImageUrl } from '../utils/imageUrl';
 
 const { width } = Dimensions.get('window');
 const CARD_WIDTH = (width - 24) / 2;
@@ -17,7 +18,7 @@ export function VideoCard({ item, onPress }: Props) {
     <TouchableOpacity style={styles.card} onPress={onPress} activeOpacity={0.85}>
       <View style={styles.thumbContainer}>
         <Image
-          source={{ uri: item.pic }}
+          source={{ uri: proxyImageUrl(item.pic) }}
           style={styles.thumb}
           resizeMode="cover"
         />