Update all .cpp files to use .cc extension (google style)

pipeline/src/data_generation/llama/generate_brewery.cc

@@ -1,5 +1,5 @@
 /**
- * @file data_generation/llama/generate_brewery.cpp
+ * @file data_generation/llama/generate_brewery.cc
  * @brief Builds brewery prompts with regional context, performs retry-based
  * inference, and validates structured JSON output for brewery records.
  */

pipeline/src/data_generation/llama/generate_user.cc

@@ -1,5 +1,5 @@
 /**
- * @file data_generation/llama/generate_user.cpp
+ * @file data_generation/llama/generate_user.cc
  * @brief Generates locale-aware user profiles with strict two-line formatting,
  * retry handling, and output sanitization for downstream parsing.
  */

pipeline/src/data_generation/llama/helpers.cc

@@ -1,5 +1,5 @@
 /**
- * @file data_generation/llama/helpers.cpp
+ * @file data_generation/llama/helpers.cc
  * @brief Provides prompt formatting, whitespace normalization, response
  * parsing, token decoding, and JSON validation helpers for Llama modules.
  */

pipeline/src/data_generation/llama/llama_generator.cc

@@ -1,5 +1,5 @@
 /**
- * @file data_generation/llama/llama_generator.cpp
+ * @file data_generation/llama/llama_generator.cc
  * @brief LlamaGenerator constructor and destructor implementation.
  */
 

pipeline/src/data_generation/llama/load.cc

@@ -1,5 +1,5 @@
 /**
- * @file data_generation/llama/load.cpp
+ * @file data_generation/llama/load.cc
  * @brief Initializes llama backend, loads model weights, creates inference
  * context, and resets prior resources during model initialization.
  */

pipeline/src/data_generation/llama/load_brewery_prompt.cc

@@ -1,5 +1,5 @@
 /**
- * @file data_generation/llama/load_brewery_prompt.cpp
+ * @file data_generation/llama/load_brewery_prompt.cc
  * @brief Resolves brewery system prompt content from cache or a configured
  * filesystem path and provides a robust inline fallback prompt when absent.
  */
@@ -56,4 +56,4 @@ std::string LlamaGenerator::LoadBrewerySystemPrompt(
       prompt_path.string(), prompt.length());
   brewery_system_prompt_ = prompt;
   return brewery_system_prompt_;
-}
+}

pipeline/src/data_generation/mock/deterministic_hash.cc

@@ -1,5 +1,5 @@
 /**
- * @file data_generation/mock/deterministic_hash.cpp
+ * @file data_generation/mock/deterministic_hash.cc
  * @brief Implements a stable hash combiner used by MockGenerator to derive
  * repeatable pseudo-random indices from location input.
  */

pipeline/src/data_generation/mock/generate_brewery.cc

@@ -1,5 +1,5 @@
 /**
- * @file data_generation/mock/generate_brewery.cpp
+ * @file data_generation/mock/generate_brewery.cc
  * @brief Builds deterministic brewery names and descriptions by hashing city
  * and country into fixed mock phrase catalogs.
  */

pipeline/src/data_generation/mock/generate_user.cc

@@ -1,5 +1,5 @@
 /**
- * @file data_generation/mock/generate_user.cpp
+ * @file data_generation/mock/generate_user.cc
  * @brief Generates deterministic mock user profiles by hashing locale values
  * into predefined username and bio collections.
  */