Fix error masking in validate-bundle cleanup

Wrap cleanup `Deno.removeSync` calls in try-catch so that failures
to remove files that don't yet exist (e.g. when validation fails
before creating them) don't mask the real error.

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

Author: cderv

package/src/common/validate-bundle.ts

@@ -66,8 +66,11 @@ export async function validateBundle(
   } finally {
     const cleanupFiles = [moveScriptDest, outFile, "package-lock.json", "node_modules"];
     cleanupFiles.forEach((file) => {
-      Deno.removeSync(file, {recursive: true});
+      try {
+        Deno.removeSync(file, {recursive: true});
+      } catch (_e) {
+        // File may not exist if validation failed early
+      }
     })
-
   }
 }