Extract emails into separate package with clean interface

- Create packages/emails/ with EmailClient interface abstraction
- Wrap Postmark ServerClient in adapter for clean typing
- Add createLoggingEmailClient for dev mode (logs to console)
- Split email templates into individual files with full test coverage
- Update api-server to use new package via context injection
- Remove EMAIL_DEV_MODE - now uses POSTMARK_API_KEY presence
- Delete apps/api-server/src/utils/email.ts

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

apps/api-server/src/procedures/auth/login-password.ts

@@ -4,8 +4,8 @@
  */
 
 import { ORPCError } from "@orpc/server";
+import { sendLoginConfirmationEmail } from "@reviq/emails";
 import { COOKIE_NAMES, getCookie } from "../../utils/cookies.js";
-import { sendLoginConfirmationEmail } from "../../utils/email.js";
 import { verifyPassword } from "../../utils/password.js";
 import { isDeviceTrusted } from "../../utils/session.js";
 import { os } from "../base.js";
@@ -108,7 +108,14 @@ export const loginPassword = os.auth.loginPassword.handler(
     } else {
       // Device is untrusted - send confirmation email with existing token
       // The same base58 token is used for both cookie lookup and email confirmation
-      await sendLoginConfirmationEmail(result.email, result.token);
+      await sendLoginConfirmationEmail({
+        client: context.email.client,
+        fromAddress: context.email.fromAddress,
+        baseUrl: context.email.baseUrl,
+        email: result.email,
+        token: result.token,
+        expiryMinutes: 15,
+      });
     }
 
     return { success: true };