feat(medications): 优化药品管理功能和登录流程

- 更新默认药品图片为专用图标
- 移除未使用的 loading 状态选择器
- 优化 Apple 登录按钮样式，支持毛玻璃效果和加载状态
- 添加登录成功后返回功能(shouldBack 参数)
- 药品详情页添加信息卡片点击交互
- 添加药品添加页面的登录状态检查
- 增强时间选择器错误处理和数据验证
- 修复药品图片显示逻辑，支持网络图片
- 优化药品卡片样式和布局
- 添加图片加载错误处理

app/auth/login.tsx

@@ -4,7 +4,7 @@ import { GlassView, isLiquidGlassAvailable } from 'expo-glass-effect';
 import { LinearGradient } from 'expo-linear-gradient';
 import { useLocalSearchParams, useRouter } from 'expo-router';
 import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react';
-import { Alert, Animated, Linking, Pressable, ScrollView, StyleSheet, Text, TouchableOpacity, View } from 'react-native';
+import { ActivityIndicator, Alert, Animated, Linking, Pressable, ScrollView, StyleSheet, Text, TouchableOpacity, View } from 'react-native';
 import { SafeAreaView } from 'react-native-safe-area-context';
 
 import { ThemedText } from '@/components/ThemedText';
@@ -18,7 +18,7 @@ import Toast from 'react-native-toast-message';
 
 export default function LoginScreen() {
   const router = useRouter();
-  const searchParams = useLocalSearchParams<{ redirectTo?: string; redirectParams?: string }>();
+  const searchParams = useLocalSearchParams<{ redirectTo?: string; redirectParams?: string; shouldBack?: string }>();
   const scheme = (useColorScheme() ?? 'light') as 'light' | 'dark';
   const color = Colors[scheme];
   const pageBackground = scheme === 'light' ? color.pageBackgroundEmphasis : color.background;
@@ -122,16 +122,24 @@ export default function LoginScreen() {
         type: 'success',
       });
       // 登录成功后处理重定向
-      const to = searchParams?.redirectTo as string | undefined;
-      const paramsJson = searchParams?.redirectParams as string | undefined;
-      let parsedParams: Record<string, any> | undefined;
-      if (paramsJson) {
-        try { parsedParams = JSON.parse(paramsJson); } catch { }
-      }
-      if (to) {
-        router.replace({ pathname: to, params: parsedParams } as any);
-      } else {
+      const shouldBack = searchParams?.shouldBack === 'true';
+      
+      if (shouldBack) {
+        // 如果设置了 shouldBack，直接返回上一页
         router.back();
+      } else {
+        // 否则按照原有逻辑进行重定向
+        const to = searchParams?.redirectTo as string | undefined;
+        const paramsJson = searchParams?.redirectParams as string | undefined;
+        let parsedParams: Record<string, any> | undefined;
+        if (paramsJson) {
+          try { parsedParams = JSON.parse(paramsJson); } catch { }
+        }
+        if (to) {
+          router.replace({ pathname: to, params: parsedParams } as any);
+        } else {
+          router.back();
+        }
       }
     } catch (err: any) {
       console.log('err.code', err.code);
@@ -248,20 +256,55 @@ export default function LoginScreen() {
 
           {/* Apple 登录 */}
           {appleAvailable && (
-            <Pressable
+            <TouchableOpacity
               accessibilityRole="button"
               onPress={() => guardAgreement(onAppleLogin)}
               disabled={loading}
-              style={({ pressed }) => [
-                styles.appleButton,
-                { backgroundColor: '#000000' },
-                loading && { opacity: 0.7 },
-                pressed && { transform: [{ scale: 0.98 }] },
-              ]}
+              activeOpacity={0.7}
             >
-              <Ionicons name="logo-apple" size={22} color="#FFFFFF" style={{ marginRight: 10 }} />
-              <Text style={styles.appleText}>使用 Apple 登录</Text>
-            </Pressable>
+              {isLiquidGlassAvailable() ? (
+                <GlassView
+                  style={styles.appleButton}
+                  glassEffectStyle="regular"
+                  tintColor="rgba(0, 0, 0, 0.8)"
+                  isInteractive={true}
+                >
+                  {loading ? (
+                    <>
+                      <ActivityIndicator
+                        size="small"
+                        color="#FFFFFF"
+                        style={{ marginRight: 10 }}
+                      />
+                      <Text style={styles.appleText}>登录中...</Text>
+                    </>
+                  ) : (
+                    <>
+                      <Ionicons name="logo-apple" size={22} color="#FFFFFF" style={{ marginRight: 10 }} />
+                      <Text style={styles.appleText}>使用 Apple 登录</Text>
+                    </>
+                  )}
+                </GlassView>
+              ) : (
+                <View style={[styles.appleButton, styles.appleButtonFallback, loading && { opacity: 0.7 }]}>
+                  {loading ? (
+                    <>
+                      <ActivityIndicator
+                        size="small"
+                        color="#FFFFFF"
+                        style={{ marginRight: 10 }}
+                      />
+                      <Text style={styles.appleText}>登录中...</Text>
+                    </>
+                  ) : (
+                    <>
+                      <Ionicons name="logo-apple" size={22} color="#FFFFFF" style={{ marginRight: 10 }} />
+                      <Text style={styles.appleText}>使用 Apple 登录</Text>
+                    </>
+                  )}
+                </View>
+              )}
+            </TouchableOpacity>
           )}
 
           {/* 协议勾选 */}
@@ -343,12 +386,16 @@ const styles = StyleSheet.create({
     justifyContent: 'center',
     flexDirection: 'row',
     marginBottom: 16,
+    overflow: 'hidden',
     shadowColor: '#000',
     shadowOffset: { width: 0, height: 8 },
     shadowOpacity: 0.15,
     shadowRadius: 12,
     elevation: 2,
   },
+  appleButtonFallback: {
+    backgroundColor: '#000000',
+  },
   appleText: {
     fontSize: 16,
     color: '#FFFFFF',