refactor: remover funções, tipos e exports não utilizados

Remove createActionHandler, validateHashToken, decimalSchema,
optionalPeriodSchema, dateStringSchema, amountSchema, FeedbackDialog
standalone, CalendarEventType, parseDateKey, entre outros.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lib/categorias/defaults.ts

@@ -3,7 +3,7 @@ import { categorias } from "@/db/schema";
 import type { CategoryType } from "@/lib/categorias/constants";
 import { db } from "@/lib/db";
 
-export type DefaultCategory = {
+type DefaultCategory = {
 	name: string;
 	type: CategoryType;
 	icon: string | null;