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/forgot-password.ts

@@ -57,5 +57,6 @@ export const forgotPassword = os.auth.forgotPassword.handler(
 
     // Always return success (anti-enumeration)
     // Don't reveal whether the email exists or not
+    return { success: true };
   },
 );

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

@@ -41,7 +41,7 @@ export const loginPasswordConfirm = os.auth.loginPasswordConfirm.handler(
 
     // If already completed, return success (idempotent)
     if (loginRequest.completed_at !== null) {
-      return;
+      return { success: true };
     }
 
     // Mark as completed
@@ -50,5 +50,7 @@ export const loginPasswordConfirm = os.auth.loginPasswordConfirm.handler(
       .set({ completed_at: new Date() })
       .where("id", "=", loginRequest.id)
       .execute();
+
+    return { success: true };
   },
 );

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

@@ -111,6 +111,6 @@ export const loginPassword = os.auth.loginPassword.handler(
       await sendLoginConfirmationEmail(result.email, result.token);
     }
 
-    // Return void (success)
+    return { success: true };
   },
 );

apps/api-server/src/procedures/auth/logout.ts

@@ -23,4 +23,6 @@ export const logout = os.auth.logout
 
     // Clear the session cookie
     deleteCookie(context.resHeaders, COOKIE_NAMES.SESSION_TOKEN);
+
+    return { success: true };
   });

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 };
   });

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

@@ -84,6 +84,6 @@ export const resetPassword = os.auth.resetPassword.handler(
       .where("revoked_at", "is", null)
       .execute();
 
-    // Return void on success
+    return { success: true };
   },
 );

apps/api-server/src/procedures/auth/signup.ts

@@ -280,4 +280,6 @@ export const signup = os.auth.signup.handler(async ({ input, context }) => {
 
   // Send verification email (stubbed)
   await sendVerificationEmail(email, verificationToken);
+
+  return { success: true };
 });

apps/api-server/src/procedures/auth/verify-email.ts

@@ -54,5 +54,7 @@ export const verifyEmail = os.auth.verifyEmail.handler(
       .deleteFrom("email_verifications")
       .where("id", "=", verification.id)
       .execute();
+
+    return { success: true };
   },
 );