fix: add missing disableSignUp to auth config objects in CLI

All auth config literals in the CLI were missing the required
disableSignUp field after it was added to authConfigSchema.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

cli/src/commands/configure.ts

@@ -61,6 +61,7 @@ function defaultConfig(): PaperclipConfig {
     },
     auth: {
       baseUrlMode: "auto",
+      disableSignUp: false,
     },
     storage: defaultStorageConfig(),
     secrets: defaultSecretsConfig(),

cli/src/commands/onboard.ts

@@ -185,6 +185,7 @@ function quickstartDefaultsFromEnv(): {
     },
     auth: {
       baseUrlMode: authBaseUrlMode,
+      disableSignUp: false,
       ...(authPublicBaseUrl ? { publicBaseUrl: authPublicBaseUrl } : {}),
     },
     storage: {