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>

lib/actions/types.ts

@@ -2,22 +2,22 @@
  * Standard action result type
  */
 export type ActionResult<TData = void> =
-  | { success: true; message: string; data?: TData }
-  | { success: false; error: string };
+	| { success: true; message: string; data?: TData }
+	| { success: false; error: string };
 
 /**
  * Success result helper
  */
 export function successResult<TData = void>(
-  message: string,
-  data?: TData
+	message: string,
+	data?: TData,
 ): ActionResult<TData> {
-  return { success: true, message, data };
+	return { success: true, message, data };
 }
 
 /**
  * Error result helper
  */
 export function errorResult(error: string): ActionResult {
-  return { success: false, error };
+	return { success: false, error };
 }