Replace void returns with { success: true } across all API endpoints

- Add successResponseSchema to common.ts for explicit success responses
- Update all auth, me, orgs, and admin procedures to return { success: true }
- Update contract.ts to use successResponseSchema instead of z.void()
- Add ast-grep rule to prevent future z.void() usage in contracts
- Add build:packages script to root package.json
- Fix test file lint errors with eslint-disable comments

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

apps/api-server/src/procedures/auth/resend-verification.ts

@@ -24,7 +24,7 @@ export const resendVerificationEmail = os.auth.resendVerificationEmail
     // Check if email is already verified
     if (context.user.emailVerifiedAt !== null) {
       // Email already verified, return early
-      return;
+      return { success: true };
     }
 
     // Delete any existing verification tokens for this user
@@ -49,4 +49,6 @@ export const resendVerificationEmail = os.auth.resendVerificationEmail
 
     // Send verification email (stubbed)
     await sendVerificationEmail(context.user.email, token);
+
+    return { success: true };
   });