fix: normalize glob paths with split(sep).join('/') on Windows

glob/globSync returns host-separator paths on Windows. Nine scripts that consume these paths for split('/'), manifest-key comparison, startsWith/includes exclusion checks, or committed-output rendering now normalize with .map(s => s.split(sep).join('/')) at ingestion. This replaces the previous replaceAll('\\\\', '/') with an explicit, self-documenting OS-separator-to-POSIX conversion.

scripts/verify-package-readme-limitations.ts

@@ -6,7 +6,7 @@
  */
 
 import { existsSync, globSync, readFileSync } from 'node:fs'
-import { resolve } from 'node:path'
+import { resolve, sep } from 'node:path'
 import { markdownHeadingLines, markdownProseLines } from './markdown.ts'
 
 const root = resolve(import.meta.dirname, '..')
@@ -30,7 +30,7 @@ function isLimitationsLike(headingText: string): boolean {
   )
 }
 
-const packageJsons = globSync('packages/*/*/package.json', { cwd: root }).sort()
+const packageJsons = globSync('packages/*/*/package.json', { cwd: root }).map(path => path.split(sep).join('/')).sort()
 const scannedPackages = new Set(packageJsons.map(path => path.slice(0, -'/package.json'.length)))
 const failures: string[] = []