v3: search engine, responsive header with compact user menu

api/model/interfaces.ts

@@ -1,21 +1,9 @@
+import { VALIDATION } from "../config.ts";
+
 /**
  * Backend
  */
 
-// ── Validation constants (shared with frontend via src/config/api.ts) ──────────
-export const VALIDATION = {
-  USERNAME_MIN: 1,
-  USERNAME_MAX: 32,
-  PASSWORD_MIN: 8,
-  PASSWORD_MAX: 128,
-  DUMP_TITLE_MAX: 200,
-  DUMP_COMMENT_MAX: 5000,
-  PLAYLIST_TITLE_MAX: 100,
-  PLAYLIST_DESCRIPTION_MAX: 2000,
-  COMMENT_BODY_MAX: 5000,
-  USER_DESCRIPTION_MAX: 2000,
-} as const;
-
 export interface RichContent {
   type: string;
   url: string;