chore: update package version and dependencies

- Bump version from 0.0.39 to 0.0.40 in package.json
- Update @kevisual/query from ^0.0.31 to ^0.0.32
- Update @types/node from ^24.10.2 to ^25.0.3
- Update rollup from ^4.53.3 to ^4.53.5
- Update zod from ^4.1.13 to ^4.2.1
- Update send from ^1.2.0 to ^1.2.1

refactor: improve error handling in CustomError class

- Refactor isError method to use type guard for better type checking

fix: change cookie import path in server.ts

- Update cookie import from 'cookie' to './cookie.ts'

feat: implement cookie parsing and stringifying functionality

- Add cookie.ts with functions for parsing and stringifying cookies
- Implement cookie name, value, domain, path, max-age, and other attributes handling

src/result/error.ts

@@ -40,11 +40,8 @@ export class CustomError extends Error {
    * @param err
    * @returns
    */
-  static isError(err: any) {
-    if (err instanceof CustomError || err?.code) {
-      return true;
-    }
-    return false;
+  static isError(error: unknown): error is CustomError {
+    return error instanceof CustomError || (typeof error === 'object' && error !== null && 'code' in error);
   }
   parse(e?: CustomError) {
     if (e) {