feat: companion unique id firefox (#26791)

companion/wxt.config.ts

@@ -46,6 +46,9 @@ export default defineConfig({
     "build:manifestGenerated": (_wxt, manifest) => {
       manifest.browser_specific_settings ??= {};
       manifest.browser_specific_settings.gecko ??= {};
+      // Stable extension ID for Firefox development - ensures consistent OAuth redirect URL
+      // This must be an email-like string for Firefox to accept it
+      manifest.browser_specific_settings.gecko.id = "companion@cal.com";
       manifest.browser_specific_settings.gecko.data_collection_permissions = {
         required: ["none"],
       };