Fix zod imports with ast-grep namespace import rule

Applied ast-grep rule to convert named zod imports to namespace imports
across the api-contract package for consistency.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/api-contract/tsconfig.json

@@ -1,12 +1,6 @@
 {
   "extends": "@macalinao/tsconfig/tsconfig.base.json",
   "compilerOptions": {
-    "outDir": "./dist",
-    "rootDir": "./src",
-    "declaration": true,
-    "declarationMap": true,
     "isolatedDeclarations": false
-  },
-  "include": ["src/**/*"],
-  "exclude": ["node_modules", "dist"]
+  }
 }