fix: normalize vitest RUN line path on Windows for stable snap tests

On Windows CI, vitest outputs short path names (e.g., RUNNER~1) in the
RUN line that don't match the cwd passed to the normalizer. Add a
fallback regex to replace Windows absolute paths in vitest RUN lines
with <cwd>.

Author: fengmk2

packages/tools/src/utils.ts

@@ -40,6 +40,10 @@ export function replaceUnstableOutput(output: string, cwd?: string) {
     // Pattern: backslash between alphanumeric/dot/underscore/hyphen chars
     output = output.replaceAll(/([a-zA-Z0-9._-])\\([a-zA-Z0-9._-])/g, '$1/$2');
   }
+  // Normalize vitest RUN line: path may not match cwd on Windows due to short path names (RUNNER~1).
+  // Format: " RUN  /path" or " RUN  v1.0.0 /path"
+  output = output.replaceAll(/( RUN  (?:v\S+ )?)(?!<cwd>)[A-Za-z]:[\\/]\S+/g, '$1<cwd>');
+
   return (
     output
       // semver version