feat(payers): gerar share_code na aplicação e remover pgcrypto

Move a geração do share_code do PostgreSQL para a camada de aplicação,
eliminando a dependência da extensão pgcrypto no setup do banco.

- schema: drop default substr(encode(gen_random_bytes(24), 'base64'), 1, 24)
  da coluna share_code em pagadores (continua NOT NULL)
- nova util generateShareCode() em shared/lib/payers/share-code.ts
  (server-only, usa crypto.randomBytes do Node)
- chamadas explícitas em createPayerAction, ensureDefaultPagadorForUser,
  resetUserAppData e mock-data ao inserir pagadores
- migration 0028_fancy_reaper renumerada (0027 já estava ocupado por
  arquivo órfão); journal e snapshot atualizados
- remove etapa de habilitação de pgcrypto do docker-entrypoint.sh
- remove scripts/postgres/ (init.sql e enable-extensions.ts)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/features/payers/actions.ts

@@ -1,6 +1,5 @@
 "use server";
 
-import { randomBytes } from "node:crypto";
 import { and, eq } from "drizzle-orm";
 import { revalidatePath } from "next/cache";
 import { z } from "zod";
@@ -17,6 +16,7 @@ import {
 	PAYER_ROLE_THIRD_PARTY,
 	PAYER_STATUS_OPTIONS,
 } from "@/shared/lib/payers/constants";
+import { generateShareCode } from "@/shared/lib/payers/share-code";
 import { normalizeAvatarPath } from "@/shared/lib/payers/utils";
 import { noteSchema, uuidSchema } from "@/shared/lib/schemas/common";
 import type { ActionResult } from "@/shared/lib/types/actions";
@@ -83,12 +83,6 @@ type ShareCodeRegenerateInput = z.infer<typeof shareCodeRegenerateSchema>;
 
 const revalidate = (userId: string) => revalidateForEntity("payers", userId);
 
-const generateShareCode = () => {
-	// base64url já retorna apenas [a-zA-Z0-9_-]
-	// 18 bytes = 24 caracteres em base64
-	return randomBytes(18).toString("base64url").slice(0, 24);
-};
-
 export async function createPayerAction(
 	input: CreateInput,
 ): Promise<ActionResult> {

src/features/settings/actions.ts

@@ -17,6 +17,7 @@ import {
 	PAYER_STATUS_OPTIONS,
 } from "@/shared/lib/payers/constants";
 import { getAdminPayerId } from "@/shared/lib/payers/get-admin-id";
+import { generateShareCode } from "@/shared/lib/payers/share-code";
 import { normalizeNameFromEmail } from "@/shared/lib/payers/utils";
 import { deleteS3Object } from "@/shared/lib/storage/presign";
 
@@ -153,6 +154,7 @@ async function resetUserAppData(
 			note: null,
 			role: PAYER_ROLE_ADMIN,
 			isAutoSend: false,
+			shareCode: generateShareCode(),
 			userId,
 		});
 	});