nit: no empty strings in schema

Author: stevesarmiento

packages/connector/src/config/schemas.ts

@@ -143,15 +143,24 @@ export const walletSchema = z.custom<import('@wallet-standard/base').Wallet>(
     { message: 'Invalid Wallet Standard wallet object' },
 );
 
+/**
+ * Non-empty trimmed string schema for wallet names.
+ * Trims whitespace and rejects empty strings.
+ */
+const nonEmptyTrimmedStringSchema = z
+    .string()
+    .transform(s => s.trim())
+    .refine(s => s.length > 0, { message: 'Wallet name cannot be empty or whitespace-only' });
+
 /**
  * Wallet list controls for Wallet Standard auto-discovery.
  * Matches by wallet display name (case-insensitive, exact match after trimming).
  */
 export const walletDisplayConfigSchema = z
     .object({
-        allowList: z.array(z.string()).optional(),
-        denyList: z.array(z.string()).optional(),
-        featured: z.array(z.string()).optional(),
+        allowList: z.array(nonEmptyTrimmedStringSchema).optional(),
+        denyList: z.array(nonEmptyTrimmedStringSchema).optional(),
+        featured: z.array(nonEmptyTrimmedStringSchema).optional(),
     })
     .optional();