docs: clean upload documentation

lib/sanitize.ts

@@ -1,8 +1,7 @@
 import { basename } from 'path'
 
 /**
- * Sanitize a filename: strip path components, replace special chars,
- * collapse underscores, lowercase.
+ * Normalize uploaded filenames before storing them or writing Git paths.
  */
 export function sanitizeFilename(name: string): string {
   return basename(name)