refactor: migrate route definitions to path builders

frontend/src/config/routes.ts

@@ -1,3 +1,4 @@
+// Route PATTERNS
 export const ROUTES = {
   HOME: "/",
   ONBOARD: "/onboard",
@@ -5,6 +6,13 @@ export const ROUTES = {
   ACTIVATE: "/activate/:uidb64/:token",
   LOGIN: "/login",
   DRAWER: "/drawer",
-  WRITE: (public_id?: string) => `/quill/${public_id ? public_id : ""}`,
-  READ: (public_id?: string) => `/read/${public_id ? public_id : ""}`,
+  WRITE: "/quill/:public_id?", // ← static pattern
+  READ: "/read/:public_id",
+};
+
+// Path BUILDERS
+export const PATHS = {
+  write: (public_id?: string) => `/quill/${public_id ?? ""}`,
+  read: (public_id: string) => `/read/${public_id}`,
+  activate: (uidb64: string, token: string) => `/activate/${uidb64}/${token}`,
 };