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/dot-icon.tsx

@@ -1,11 +1,11 @@
 type DotIconProps = {
-  bg_dot: string;
+	bg_dot: string;
 };
 
 export default function DotIcon({ bg_dot }: DotIconProps) {
-  return (
-    <span>
-      <span className={`${bg_dot} flex size-2 rounded-full`}></span>
-    </span>
-  );
+	return (
+		<span>
+			<span className={`${bg_dot} flex size-2 rounded-full`}></span>
+		</span>
+	);
 }