feat: implement database schema discovery and management services with frontend integration

backend/routes/api.php

@@ -20,6 +20,7 @@ Route::prefix('schema')->group(function () {
     Route::post('/bulk-action', [SchemaController::class, 'bulkAction']);
     Route::get('/{table}', [SchemaController::class, 'schema']);
     Route::get('/{table}/data', [SchemaController::class, 'data']);
+    Route::post('/{table}/batch-update', [SchemaController::class, 'batchUpdate']);
     Route::post('/execute', [SchemaController::class, 'execute']);
     Route::post('/export', [SchemaController::class, 'export']);
     Route::post('/import', [SchemaController::class, 'import']);