R2 storage from env + filename normalization

dist/modules/media/normalizeFilename.d.ts

@@ -0,0 +1,25 @@
+import type { CollectionBeforeOperationHook } from 'payload';
+/**
+ * Normalizes a filename: slugifies the NAME part (diacritics, spaces, case)
+ * while preserving the extension. Keeps uploaded media URLs clean and portable.
+ *
+ *   "Zdjęcie jeden nad morzem.jpg"  → "zdjecie-jeden-nad-morzem.jpg"
+ *   "Faktura #12 (2024).PDF"        → "faktura-12-2024.pdf"
+ *   "already-clean.webp"            → "already-clean.webp"
+ *
+ * Why not toSlug(): toSlug uses strict:true, which would strip the dot and
+ * merge name+extension. Here we split on the LAST dot, slug the stem, lowercase
+ * the extension, and rejoin.
+ */
+export declare function normalizeFilename(filename: string): string;
+/**
+ * beforeOperation hook for an upload collection (e.g. Media). Rewrites the
+ * incoming file's name to its normalized form before Payload stores it, so both
+ * the stored file and its DB filename are clean. Works with local disk and with
+ * cloud storage adapters (R2/S3) — it runs before the storage layer.
+ *
+ * Wire into your Media collection:
+ *   import { normalizeFilenameHook } from '@intecion/ipal-kit'
+ *   hooks: { beforeOperation: [normalizeFilenameHook] }
+ */
+export declare const normalizeFilenameHook: CollectionBeforeOperationHook;