fix(android): 禁止 Android App 文件卡片内图片点击预览

static/src/components/chat/ShowFileCard.vue

@@ -61,9 +61,10 @@
       <template v-else-if="fileType === 'image'">
         <img
           class="sfc-image"
+          :class="{ 'sfc-image--android': isAndroidApp }"
           :src="contentUrl"
           :alt="displayName"
-          @click="openFullImage"
+          @click="!isAndroidApp && openFullImage()"
           @error="onImageError"
         />
       </template>
@@ -110,6 +111,11 @@ const canPreview = computed(() => {
 
 const canCopy = computed(() => ['text', 'code', 'json', 'csv', 'markdown'].includes(fileType.value));
 
+const isAndroidApp = computed(() => {
+  return typeof (window as any).AndroidDownloadBridge !== 'undefined' ||
+         typeof (window as any).AndroidThemeBridge !== 'undefined';
+});
+
 const metaText = computed(() => {
   if (!rawContent.value) return '';
   const sizeKB = (new Blob([rawContent.value]).size / 1024).toFixed(1);
@@ -465,4 +471,11 @@ onMounted(() => {
   padding: 12px;
 }
 
+.sfc-image--android {
+  cursor: default;
+  pointer-events: none;
+  -webkit-user-select: none;
+  user-select: none;
+}
+
 </style>