refactor: remove speculative Windows short-path resolution

The CI failure was caused by separator mismatch (mixed vs all-forward-slash),
not by 8.3 short name mismatch. Remove the resolveWindowsLongPath function
and related test since the forward-slash fix already handles the issue.

Author: fengmk2

packages/tools/src/__tests__/utils.spec.ts

@@ -152,22 +152,6 @@ Done in 171ms using pnpm v10.16.1
     });
   });
 
-  test.skipIf(process.platform !== 'win32')(
-    'Windows: resolve short path names (8.3) when replacing cwd',
-    () => {
-      // On Windows CI, tmpdir() may return short names like RUNNER~1.
-      // fs.realpathSync.native() resolves them to long names.
-      // Both forms should be replaced with <cwd>.
-      const fs = require('node:fs');
-      const shortCwd = fs.realpathSync(require('node:os').tmpdir());
-      const longCwd = fs.realpathSync.native(require('node:os').tmpdir());
-      if (shortCwd !== longCwd) {
-        const output = ` RUN  ${longCwd}\n`;
-        expect(replaceUnstableOutput(output, shortCwd)).toBe(' RUN  <cwd>\n');
-      }
-    },
-  );
-
   test('replace tsdown output', () => {
     const output = `
 ℹ tsdown v0.15.1 powered by rolldown v0.15.1

packages/tools/src/utils.ts

@@ -1,4 +1,3 @@
-import fs from 'node:fs';
 import { homedir } from 'node:os';
 import path from 'node:path';
 
@@ -9,22 +8,6 @@ const ANSI_ESCAPE_REGEX = new RegExp(
   'g',
 );
 
-/**
- * On Windows, resolve 8.3 short path names (e.g., RUNNER~1) to long names.
- * Uses fs.realpathSync.native() which calls the OS-level realpath and resolves
- * short names. Falls back to the original path if it doesn't exist.
- */
-function resolveWindowsLongPath(p: string): string {
-  if (process.platform !== 'win32') {
-    return p;
-  }
-  try {
-    return fs.realpathSync.native(p);
-  } catch {
-    return p;
-  }
-}
-
 export function replaceUnstableOutput(output: string, cwd?: string) {
   // Normalize line endings and strip ANSI escapes so snapshots are stable
   // across CI platforms and terminal capabilities.
@@ -46,19 +29,9 @@ export function replaceUnstableOutput(output: string, cwd?: string) {
       output = output.replaceAll(rawPath, placeholder);
     };
     replacePathToken(cwd, '<cwd>');
-    // On Windows, also try the long-path form to handle 8.3 short name mismatches
-    // (e.g., cwd has RUNNER~1 but output has runneradmin, or vice versa).
-    const longCwd = resolveWindowsLongPath(cwd);
-    if (longCwd !== cwd) {
-      replacePathToken(longCwd, '<cwd>');
-    }
     const parent = path.dirname(cwd);
     if (parent !== '/') {
       replacePathToken(parent, '<cwd>/..');
-      const longParent = resolveWindowsLongPath(parent);
-      if (longParent !== parent) {
-        replacePathToken(longParent, '<cwd>/..');
-      }
     }
   }
   // On Windows, normalize path separators in file paths for consistent snapshots.