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>

public/fonts/font_index.ts

@@ -1,19 +1,19 @@
 import localFont from "next/font/local";
 
 const ai_sans = localFont({
-  src: [
-    {
-      path: "./AISans-Regular.woff2",
-      weight: "400",
-      style: "normal",
-    },
-    {
-      path: "./AISans-Semibold.woff2",
-      weight: "700",
-      style: "normal",
-    },
-  ],
-  display: "swap",
+	src: [
+		{
+			path: "./AISans-Regular.woff2",
+			weight: "400",
+			style: "normal",
+		},
+		{
+			path: "./AISans-Semibold.woff2",
+			weight: "700",
+			style: "normal",
+		},
+	],
+	display: "swap",
 });
 
 const main_font = ai_sans;