Extend DFTE template engine debug API and refine renderer logging.

Add helpers in DeviceFrameworkTemplateEngineDebug and wire clearer
instrumentation in DeviceFrameworkTemplateRenderer; update README.

src/DeviceFrameworkTemplateEngineDebug.cpp

@@ -2,21 +2,39 @@
 
 // Global logger pointer - starts as nullptr (disabled by default)
 DeviceFrameworkTemplateEngineLogger* deviceFrameworkTemplateEngineLogger = nullptr;
+const void* deviceFrameworkTemplateEngineLoggerOwner = nullptr;
 
 // ============================================================================
 // LOGGING CONFIGURATION IMPLEMENTATIONS
 // ============================================================================
 
 bool deviceFrameworkTemplateEngineEnableLogging(DeviceFrameworkTemplateEngineLogger* logger) {
+    return deviceFrameworkTemplateEngineEnableLogging(logger, nullptr);
+}
+
+bool deviceFrameworkTemplateEngineEnableLogging(DeviceFrameworkTemplateEngineLogger* logger, const void* ownerTag) {
     if (logger == nullptr) {
         return false;
     }
     deviceFrameworkTemplateEngineLogger = logger;
+    deviceFrameworkTemplateEngineLoggerOwner = ownerTag ? ownerTag : static_cast<const void*>(logger);
     return true;
 }
 
 void deviceFrameworkTemplateEngineDisableLogging() {
     deviceFrameworkTemplateEngineLogger = nullptr;
+    deviceFrameworkTemplateEngineLoggerOwner = nullptr;
+}
+
+bool deviceFrameworkTemplateEngineDisableLoggingForOwner(const void* ownerTag) {
+    if (deviceFrameworkTemplateEngineLogger == nullptr || ownerTag == nullptr) {
+        return false;
+    }
+    if (deviceFrameworkTemplateEngineLoggerOwner != ownerTag) {
+        return false;
+    }
+    deviceFrameworkTemplateEngineDisableLogging();
+    return true;
 }
 
 bool deviceFrameworkTemplateEngineIsLoggingEnabled() {
@@ -25,4 +43,8 @@ bool deviceFrameworkTemplateEngineIsLoggingEnabled() {
 
 DeviceFrameworkTemplateEngineLogger* deviceFrameworkTemplateEngineGetLogger() {
     return deviceFrameworkTemplateEngineLogger;
+}
+
+const void* deviceFrameworkTemplateEngineGetLoggerOwner() {
+    return deviceFrameworkTemplateEngineLoggerOwner;
 }