feat: 开发采集、采集箱和商品编辑功能

extension-v2/entrypoints/background.ts

@@ -0,0 +1,44 @@
+import { uploadMaterials } from '../src/api/client';
+
+// Background Service Worker —— 唯一出网口（代理图片 fetch / 上传服务端，绕 CORS / 防盗链）
+export default defineBackground(() => {
+  console.log('[套娃采集助手] background started');
+
+  // 点击扩展图标 → 打开 Side Panel
+  chrome.sidePanel.setPanelBehavior({ openPanelOnActionClick: true });
+
+  chrome.runtime.onMessage.addListener((msg, _sender, sendResponse) => {
+    if (msg?.action === 'fetchImage') {
+      fetchImageAsDataUrl(msg.url)
+        .then((dataUrl) => sendResponse({ ok: true, dataUrl }))
+        .catch((err) => sendResponse({ ok: false, error: err instanceof Error ? err.message : String(err) }));
+      return true; // 保持异步通道
+    }
+
+    if (msg?.action === 'uploadMaterials') {
+      uploadMaterials(msg.baseUrl, msg.token, msg.payload)
+        .then((data) => sendResponse({ ok: true, data }))
+        .catch((err) => sendResponse({ ok: false, error: err instanceof Error ? err.message : String(err) }));
+      return true;
+    }
+
+    return false;
+  });
+});
+
+/** 代理取图，返回 base64 data URL（结构化克隆可安全跨消息传递） */
+async function fetchImageAsDataUrl(url: string): Promise<string> {
+  const res = await fetch(url);
+  if (!res.ok) throw new Error(`HTTP ${res.status}`);
+  const type = res.headers.get('content-type') || 'image/jpeg';
+  const buf = await res.arrayBuffer();
+  const bytes = new Uint8Array(buf);
+
+  // 分块转二进制串，避免超长参数列表
+  let bin = '';
+  const chunk = 0x8000;
+  for (let i = 0; i < bytes.length; i += chunk) {
+    bin += String.fromCharCode(...bytes.subarray(i, i + chunk));
+  }
+  return `data:${type};base64,${btoa(bin)}`;
+}