Refactor Llama generator, helpers, and build assets

make Gemma 4 the default model, enable thinking mode
style updates

pipeline/includes/data_model/brewery_result.h

@@ -0,0 +1,22 @@
+#ifndef BIERGARTEN_PIPELINE_INCLUDES_DATA_MODEL_BREWERY_RESULT_H_
+#define BIERGARTEN_PIPELINE_INCLUDES_DATA_MODEL_BREWERY_RESULT_H_
+
+/**
+ * @file data_model/brewery_result.h
+ * @brief Generated brewery payload.
+ */
+
+#include <string>
+
+/**
+ * @brief Generated brewery payload.
+ */
+struct BreweryResult {
+   /// @brief Brewery display name.
+   std::string name;
+
+   /// @brief Brewery description text.
+   std::string description;
+};
+
+#endif  // BIERGARTEN_PIPELINE_INCLUDES_DATA_MODEL_BREWERY_RESULT_H_