refactor: move implementation details to source files and finalize recursion depth constants in validator

Author: nan-yu

agent_sdks/cpp/CMakeLists.txt

@@ -19,6 +19,7 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 include(FetchContent)
+find_package(Python3 REQUIRED COMPONENTS Interpreter)
 
 # Fetch nlohmann/json
 FetchContent_Declare(
@@ -68,7 +69,7 @@ set(GENERATED_SCHEMAS_FILE "${CMAKE_CURRENT_BINARY_DIR}/generated/embedded_schem
 # Custom command to run Python script
 add_custom_command(
   OUTPUT "${GENERATED_SCHEMAS_FILE}"
-  COMMAND python3 "${CMAKE_CURRENT_SOURCE_DIR}/scripts/generate_embedded_schemas.py" "${REPO_ROOT}" "${GENERATED_SCHEMAS_FILE}"
+  COMMAND Python3::Interpreter "${CMAKE_CURRENT_SOURCE_DIR}/scripts/generate_embedded_schemas.py" "${REPO_ROOT}" "${GENERATED_SCHEMAS_FILE}"
   DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/generate_embedded_schemas.py"
           "${REPO_ROOT}/specification/v0_8/json/server_to_client.json"
           "${REPO_ROOT}/specification/v0_9/json/server_to_client.json"
@@ -85,6 +86,9 @@ add_library(a2ui_sdk
   src/schema/utils.cc
   src/parser/parser.cc
   src/parser/streaming.cc
+  src/parser/streaming_impl.cc
+  src/parser/streaming_v08.cc
+  src/parser/streaming_v09.cc
   src/parser/payload_fixer.cc
   src/template/manager.cc
   src/basic_catalog/provider.cc

agent_sdks/cpp/include/a2ui/basic_catalog/constants.h

@@ -16,12 +16,12 @@
 
 #pragma once
 
-#include <string>
+#include <string_view>
 
 namespace a2ui {
 namespace basic_catalog {
 
-const std::string BASIC_CATALOG_NAME = "basic";
+inline constexpr std::string_view BASIC_CATALOG_NAME = "basic";
 
 } // namespace basic_catalog
 } // namespace a2ui

agent_sdks/cpp/src/basic_catalog/provider.cc

@@ -51,7 +51,7 @@ nlohmann::json BundledCatalogProvider::load() {
 
 CatalogConfig BasicCatalog::get_config(const std::string& version, const std::optional<std::string>& examples_path) {
     return CatalogConfig{
-        BASIC_CATALOG_NAME,
+        std::string(BASIC_CATALOG_NAME),
         std::make_shared<BundledCatalogProvider>(version),
         examples_path
     };