fix: Separate moduleVersion and logger declarations in TankModule.h

ProductionHotReload test modifies moduleVersion line with string replacement,
which was corrupting logger declaration when both were on same line.

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Co-Authored-By: Claude <noreply@anthropic.com>

tests/modules/TankModule.h

@@ -32,7 +32,8 @@ public:
 private:
     std::vector<Tank> tanks;
     int frameCount = 0;
-    std::string moduleVersion = "v1.0";std::shared_ptr<spdlog::logger> logger;
+    std::string moduleVersion = "v1.0";
+    std::shared_ptr<spdlog::logger> logger;
     std::unique_ptr<IDataNode> config;
 
     void updateTank(Tank& tank, float dt);