fix: add nlohmann_json dep to renderdoc-core and complete MCP init handshake in integration tests

- Link renderdoc-core against nlohmann_json (snapshot.cpp now uses it)
- Send notifications/initialized in integration test SetUpTestSuite
  to satisfy the new pre-initialization check

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: JiaboLi-GitHub

CMakeLists.txt

@@ -89,6 +89,8 @@ if(RENDERDOC_DIR)
         )
     endif()
 
+    target_link_libraries(renderdoc-core PUBLIC nlohmann_json::nlohmann_json)
+
     if(RENDERDOC_LIB)
         target_link_libraries(renderdoc-core PUBLIC ${RENDERDOC_LIB})
         message(STATUS "Found renderdoc library: ${RENDERDOC_LIB}")

tests/integration/test_protocol.cpp

@@ -264,6 +264,12 @@ class ProtocolTest : public ::testing::Test {
         }
 
         s_initResponse = resp.value();
+
+        // Complete MCP handshake with notifications/initialized
+        json notif;
+        notif["jsonrpc"] = "2.0";
+        notif["method"] = "notifications/initialized";
+        s_runner->sendRequest(notif, 1000);  // notification, no response expected
     }
 
     static void TearDownTestSuite()