Implement Llama-based brewery and user data generation; remove mock generator and related files

pipeline/includes/data_generator.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <string>
+
+struct BreweryResult {
+  std::string name;
+  std::string description;
+};
+
+struct UserResult {
+  std::string username;
+  std::string bio;
+};
+
+class IDataGenerator {
+public:
+  virtual ~IDataGenerator() = default;
+
+  virtual void load(const std::string &modelPath) = 0;
+
+  virtual BreweryResult generateBrewery(const std::string &cityName,
+                                        const std::string &regionContext) = 0;
+
+  virtual UserResult generateUser(const std::string &locale) = 0;
+};