Use Thunderbird background scripts for MV3

docs/psitransfer-notes.md

@@ -106,7 +106,7 @@ This document records the PsiTransfer behavior inferred from the local source at
 - A stable public delete endpoint for previously uploaded files suitable for Thunderbird `onFileDeleted`.
 - A stable public rename endpoint suitable for Thunderbird `onFileRename`.
 - Whether the Thunderbird provider should upload one file per bucket or group related files into a shared bucket. PsiTransfer is bucket-oriented, while Thunderbird `cloudFile` uploads are file-oriented.
-- Whether Thunderbird MV3 background service workers expose every browser primitive expected by the vendored `tus-js-client` bundle in all supported Thunderbird versions. The current implementation assumes the vendored bundle runs in the background worker.
+- Whether Thunderbird MV3 background scripts expose every browser primitive expected by the vendored `tus-js-client` bundle in all supported Thunderbird versions. The current implementation assumes the vendored bundle runs in the background context.
 
 ## Implemented minimal-v1 mapping
 

manifest.json

@@ -17,7 +17,9 @@
     "https://*/*"
   ],
   "background": {
-    "service_worker": "src/background.js",
+    "scripts": [
+      "src/background.js"
+    ],
     "type": "module"
   },
   "cloud_file": {

src/background.js

@@ -26,5 +26,5 @@ async function bootstrap() {
 }
 
 bootstrap().catch(caughtError => {
-  logError("Failed to bootstrap background service worker", caughtError);
+  logError("Failed to bootstrap background script", caughtError);
 });

src/psitransfer/client.js

@@ -106,7 +106,7 @@ export class PsiTransferClient {
     };
 
     if (!tus?.Upload) {
-      throw new Error("Vendored tus client did not load. Verify vendor/tus.js is packaged and accessible to the background service worker.");
+      throw new Error("Vendored tus client did not load. Verify vendor/tus.js is packaged and accessible to the background context.");
     }
   }