improvement: add organization name constraint

backend/src/server/routes/v3/signup-router.ts

@@ -4,6 +4,7 @@ import { UsersSchema } from "@app/db/schemas";
 import { getConfig } from "@app/lib/config/env";
 import { ForbiddenRequestError } from "@app/lib/errors";
 import { authRateLimit } from "@app/server/config/rateLimiter";
+import { OrganizationNameSchema } from "@app/server/lib/schemas";
 import { getServerCfg } from "@app/services/super-admin/super-admin-service";
 import { PostHogEventTypes } from "@app/services/telemetry/telemetry-types";
 
@@ -100,7 +101,7 @@ export const registerSignupRouter = async (server: FastifyZodProvider) => {
         encryptedPrivateKeyTag: z.string().trim(),
         salt: z.string().trim(),
         verifier: z.string().trim(),
-        organizationName: z.string().trim().min(1),
+        organizationName: OrganizationNameSchema,
         providerAuthToken: z.string().trim().optional().nullish(),
         attributionSource: z.string().trim().optional(),
         password: z.string()