refactor: migrate from ESLint to Biome and extract SQL queries to data.ts

- Replace ESLint with Biome for linting and formatting
- Configure Biome with tabs, double quotes, and organized imports
- Move all SQL/Drizzle queries from page.tsx files to data.ts files
- Create new data.ts files for: ajustes, dashboard, relatorios/categorias
- Update existing data.ts files: extrato, fatura (add lancamentos queries)
- Remove all drizzle-orm imports from page.tsx files
- Update README.md with new tooling info

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

components/auth/auth-footer.tsx

@@ -1,17 +1,17 @@
 import { FieldDescription } from "@/components/ui/field";
 
 export function AuthFooter() {
-  return (
-    <FieldDescription className="px-6 text-center">
-      Ao continuar, você concorda com nossos{" "}
-      <a href="/terms" className="underline underline-offset-4">
-        Termos de Serviço
-      </a>{" "}
-      e{" "}
-      <a href="/privacy" className="underline underline-offset-4">
-        Política de Privacidade
-      </a>
-      .
-    </FieldDescription>
-  );
+	return (
+		<FieldDescription className="px-6 text-center">
+			Ao continuar, você concorda com nossos{" "}
+			<a href="/terms" className="underline underline-offset-4">
+				Termos de Serviço
+			</a>{" "}
+			e{" "}
+			<a href="/privacy" className="underline underline-offset-4">
+				Política de Privacidade
+			</a>
+			.
+		</FieldDescription>
+	);
 }