Fix merge conflicts and add withTransaction helper

- Add withTransaction helper that gracefully handles nested transactions
  (reuses existing transaction in tests, starts new one otherwise)
- Update auth procedures to use withTransaction instead of direct .transaction()
- Add email config to all e2e test contexts (required by merged code)
- Remove duplicate verification token code from signup procedure

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/api-server/src/__tests__/e2e/admin.test.ts

@@ -39,6 +39,7 @@ import {
   uniqueTestId,
   withTestTransaction,
 } from "@reviq/test-helpers";
+import { createLoggingEmailClient } from "@reviq/emails";
 import { router } from "../../router.js";
 import { COOKIE_NAMES } from "../../utils/cookies.js";
 import { hashToken } from "../../utils/crypto.js";
@@ -75,6 +76,11 @@ function createAPIContext(
     rpName: TEST_RP.rpName,
     reqHeaders,
     resHeaders: new Headers(),
+    email: {
+      client: createLoggingEmailClient(),
+      fromAddress: "test@example.com",
+      baseUrl: TEST_RP.origin,
+    },
   };
 }