[PM-35288] feat: auto-close sso tab after authentication completes

apps/browser/src/background/runtime.background.ts

@@ -224,6 +224,31 @@ export default class RuntimeBackground {
       case "getUrlAutofillTargetingRules": {
         return await this.main.domainSettingsService.getTargetingRulesForUrl(sender.tab?.url);
       }
+      case "authResult": {
+        if (!(await this.isValidVaultReferrer(msg.referrer))) {
+          return;
+        }
+
+        if (msg.lastpass) {
+          this.messagingService.send("importCallbackLastPass", {
+            code: msg.code,
+            state: msg.state,
+          });
+        } else {
+          try {
+            await openSsoAuthResultPopout(msg);
+          } catch {
+            this.logService.error("Unable to open sso popout tab");
+          }
+        }
+
+        if (sender.tab?.id) {
+          await BrowserApi.closeTab(sender.tab.id).catch((error) => {
+            this.logService.error("Unable to close SSO tab", error);
+          });
+        }
+        break;
+      }
     }
   }
 
@@ -354,25 +379,6 @@ export default class RuntimeBackground {
         await this.main.reseedStorage();
         break;
       }
-      case "authResult": {
-        if (!(await this.isValidVaultReferrer(msg.referrer))) {
-          return;
-        }
-
-        if (msg.lastpass) {
-          this.messagingService.send("importCallbackLastPass", {
-            code: msg.code,
-            state: msg.state,
-          });
-        } else {
-          try {
-            await openSsoAuthResultPopout(msg);
-          } catch {
-            this.logService.error("Unable to open sso popout tab");
-          }
-        }
-        break;
-      }
       case "webAuthnResult": {
         if (!(await this.isValidVaultReferrer(msg.referrer))) {
           return;