fix(schema): reject empty strings in disabled_mcps array

Author: ReinaMacCredy

assets/oh-my-opencode.schema.json

@@ -21,7 +21,8 @@
             ]
           },
           {
-            "type": "string"
+            "type": "string",
+            "minLength": 1
           }
         ]
       }

src/config/schema.ts

@@ -2,7 +2,7 @@ import { z } from "zod"
 
 export const McpNameSchema = z.enum(["context7", "grep_app", "websearch"])
 export type McpName = z.infer<typeof McpNameSchema>
-export const AnyMcpNameSchema = z.union([McpNameSchema, z.string()])
+export const AnyMcpNameSchema = z.union([McpNameSchema, z.string().min(1)])
 export type AnyMcpName = z.infer<typeof AnyMcpNameSchema>
 
 const PermissionValue = z.enum(["ask", "allow", "deny"])