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>

app/(dashboard)/categorias/data.ts

@@ -1,26 +1,26 @@
-import type { CategoryType } from "@/components/categorias/types";
-import { categorias, type Categoria } from "@/db/schema";
-import { db } from "@/lib/db";
 import { eq } from "drizzle-orm";
+import type { CategoryType } from "@/components/categorias/types";
+import { type Categoria, categorias } from "@/db/schema";
+import { db } from "@/lib/db";
 
 export type CategoryData = {
-  id: string;
-  name: string;
-  type: CategoryType;
-  icon: string | null;
+	id: string;
+	name: string;
+	type: CategoryType;
+	icon: string | null;
 };
 
 export async function fetchCategoriesForUser(
-  userId: string
+	userId: string,
 ): Promise<CategoryData[]> {
-  const categoryRows = await db.query.categorias.findMany({
-    where: eq(categorias.userId, userId),
-  });
+	const categoryRows = await db.query.categorias.findMany({
+		where: eq(categorias.userId, userId),
+	});
 
-  return categoryRows.map((category: Categoria) => ({
-    id: category.id,
-    name: category.name,
-    type: category.type as CategoryType,
-    icon: category.icon,
-  }));
+	return categoryRows.map((category: Categoria) => ({
+		id: category.id,
+		name: category.name,
+		type: category.type as CategoryType,
+		icon: category.icon,
+	}));
 }