Create biergarten brewery pipeline project (#199)

pipeline/includes/services/enrichment_service.h

@@ -0,0 +1,30 @@
+#ifndef BIERGARTEN_PIPELINE_INCLUDES_SERVICES_ENRICHMENT_SERVICE_H_
+#define BIERGARTEN_PIPELINE_INCLUDES_SERVICES_ENRICHMENT_SERVICE_H_
+
+/**
+ * @file services/enrichment_service.h
+ * @brief Abstraction for resolving contextual enrichment for a location.
+ */
+
+#include <string>
+
+#include "data_model/location.h"
+
+/**
+ * @brief Interface for services that can enrich a location with context.
+ */
+class IEnrichmentService {
+ public:
+  /// @brief Virtual destructor for polymorphic cleanup.
+  virtual ~IEnrichmentService() = default;
+
+  /**
+   * @brief Resolves contextual enrichment for a location.
+   *
+   * @param loc Location to enrich.
+   * @return Context text, or an empty string if unavailable.
+   */
+  virtual std::string GetLocationContext(const Location& loc) = 0;
+};
+
+#endif  // BIERGARTEN_PIPELINE_INCLUDES_SERVICES_ENRICHMENT_SERVICE_H_