feat: Add application, lifecycle, and render controllers for service orchestration

src/controllers/application_controller.cpp

@@ -0,0 +1,66 @@
+#include "application_controller.hpp"
+#include "../logging/logger.hpp"
+#include "../services/interfaces/i_window_service.hpp"
+#include "../services/interfaces/i_input_service.hpp"
+#include "../events/event_bus.hpp"
+#include "../events/event_types.hpp"
+
+namespace sdl3cpp::controllers {
+
+ApplicationController::ApplicationController(di::ServiceRegistry& registry)
+    : registry_(registry), running_(false) {
+    logging::TraceGuard trace;
+}
+
+ApplicationController::~ApplicationController() {
+    logging::TraceGuard trace;
+}
+
+void ApplicationController::Run() {
+    logging::TraceGuard trace;
+    logging::Logger::GetInstance().Info("Application starting main loop");
+
+    running_ = true;
+    auto lastTime = std::chrono::high_resolution_clock::now();
+
+    while (running_) {
+        auto currentTime = std::chrono::high_resolution_clock::now();
+        float deltaTime = std::chrono::duration<float>(currentTime - lastTime).count();
+        lastTime = currentTime;
+
+        HandleEvents();
+        ProcessFrame(deltaTime);
+    }
+
+    logging::Logger::GetInstance().Info("Application exiting main loop");
+}
+
+void ApplicationController::HandleEvents() {
+    // Window service polls SDL events and publishes to event bus
+    auto windowService = registry_.GetService<services::IWindowService>();
+    if (windowService) {
+        windowService->PollEvents();
+    }
+
+    // Check for quit events
+    auto eventBus = registry_.GetService<events::EventBus>();
+    if (eventBus) {
+        // Process queued events
+        eventBus->ProcessQueue();
+    }
+
+    // Check if window should close
+    if (windowService && windowService->ShouldClose()) {
+        running_ = false;
+    }
+}
+
+void ApplicationController::ProcessFrame(float deltaTime) {
+    logging::TraceGuard trace;
+
+    // Render controller will handle rendering pipeline
+    // Physics, scripts, audio updates happen here
+    // This is a placeholder - full implementation in RenderController
+}
+
+}  // namespace sdl3cpp::controllers