fix: explicit MIME types for iOS share target

iOS Safari ignores wildcard */* in share_target accept.
List specific MIME types and file extensions so AnyDrop
appears in the iOS share sheet for photos, videos, docs, etc.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/vite.config.ts

@@ -52,7 +52,24 @@ export default defineConfig({
             files: [
               {
                 name: "files",
-                accept: ["*/*"],
+                accept: [
+                  "image/*",
+                  "video/*",
+                  "audio/*",
+                  "application/pdf",
+                  "application/zip",
+                  "application/x-zip-compressed",
+                  "text/*",
+                  "application/msword",
+                  "application/vnd.openxmlformats-officedocument.*",
+                  "application/vnd.ms-excel",
+                  "application/vnd.ms-powerpoint",
+                  ".pdf", ".zip", ".doc", ".docx", ".xls", ".xlsx",
+                  ".ppt", ".pptx", ".txt", ".csv", ".json", ".xml",
+                  ".mp3", ".mp4", ".mov", ".avi", ".mkv", ".webm",
+                  ".png", ".jpg", ".jpeg", ".gif", ".webp", ".heic", ".heif",
+                  ".svg",
+                ],
               },
             ],
           },