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/dashboard/dashboard-grid.tsx

@@ -3,24 +3,24 @@ import type { DashboardData } from "@/lib/dashboard/fetch-dashboard-data";
 import { widgetsConfig } from "@/lib/dashboard/widgets/widgets-config";
 
 type DashboardGridProps = {
-  data: DashboardData;
-  period: string;
+	data: DashboardData;
+	period: string;
 };
 
 export function DashboardGrid({ data, period }: DashboardGridProps) {
-  return (
-    <section className="grid grid-cols-1 gap-3 @4xl/main:grid-cols-2 @6xl/main:grid-cols-3">
-      {widgetsConfig.map((widget) => (
-        <WidgetCard
-          key={widget.id}
-          title={widget.title}
-          subtitle={widget.subtitle}
-          icon={widget.icon}
-          action={widget.action}
-        >
-          {widget.component({ data, period })}
-        </WidgetCard>
-      ))}
-    </section>
-  );
+	return (
+		<section className="grid grid-cols-1 gap-3 @4xl/main:grid-cols-2 @6xl/main:grid-cols-3">
+			{widgetsConfig.map((widget) => (
+				<WidgetCard
+					key={widget.id}
+					title={widget.title}
+					subtitle={widget.subtitle}
+					icon={widget.icon}
+					action={widget.action}
+				>
+					{widget.component({ data, period })}
+				</WidgetCard>
+			))}
+		</section>
+	);
 }