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/resend-verification.ts

@@ -10,12 +10,12 @@
  * 5. Send verification email (stubbed)
  */
 
+import { sendVerificationEmail } from "@reviq/emails";
 import { TOKEN_DURATIONS } from "../../utils/cookies.js";
 import {
   generateExpiry,
   generateSecureBase58Token,
 } from "../../utils/crypto.js";
-import { sendVerificationEmail } from "../../utils/email.js";
 import { authMiddleware, os } from "../base.js";
 
 export const resendVerificationEmail = os.auth.resendVerificationEmail
@@ -47,8 +47,15 @@ export const resendVerificationEmail = os.auth.resendVerificationEmail
       })
       .execute();
 
-    // Send verification email (stubbed)
-    await sendVerificationEmail(context.user.email, token);
+    // Send verification email
+    await sendVerificationEmail({
+      client: context.email.client,
+      fromAddress: context.email.fromAddress,
+      baseUrl: context.email.baseUrl,
+      email: context.user.email,
+      token,
+      expiryHours: 24,
+    });
 
     return { success: true };
   });