refactor(guest): retire legacy guest app and move shared modules

resources/js/shared/guest/queue/xhr.ts

@@ -0,0 +1,45 @@
+import type { QueueItem } from './queue';
+import { buildCsrfHeaders } from '../lib/csrf';
+
+export async function createUpload(
+  url: string,
+  it: QueueItem,
+  deviceId: string,
+  onProgress?: (percent: number) => void
+): Promise<Record<string, unknown>> {
+  return new Promise((resolve, reject) => {
+    const xhr = new XMLHttpRequest();
+    xhr.open('POST', url, true);
+    const headers = buildCsrfHeaders(deviceId);
+    Object.entries(headers).forEach(([key, value]) => {
+      xhr.setRequestHeader(key, value);
+    });
+    const form = new FormData();
+    form.append('photo', it.blob, it.fileName);
+    if (it.emotion_id) form.append('emotion_id', String(it.emotion_id));
+    if (it.task_id) form.append('task_id', String(it.task_id));
+    if (typeof it.live_show_opt_in === 'boolean') {
+      form.append('live_show_opt_in', it.live_show_opt_in ? '1' : '0');
+    }
+    xhr.upload.onprogress = (ev) => {
+      if (onProgress && ev.lengthComputable) {
+        const pct = Math.min(100, Math.round((ev.loaded / ev.total) * 100));
+        onProgress(pct);
+      }
+    };
+    xhr.onload = () => {
+      if (xhr.status >= 200 && xhr.status < 300) {
+        try {
+          resolve(JSON.parse(xhr.responseText));
+        } catch (error) {
+          console.warn('Upload response parse failed', error);
+          resolve({});
+        }
+      } else {
+        reject(new Error('upload failed'));
+      }
+    };
+    xhr.onerror = () => reject(new Error('network error'));
+    xhr.send(form);
+  });
+}