small fix, don't worry about it

lifetimer/lib/features/ai_chat/application/ai_chat_controller.dart

@@ -27,7 +27,7 @@ class AIChatState {
     this.isRecording = false,
     this.error,
     this.currentTranscription,
-    this.privacyModeEnabled = true,
+    this.privacyModeEnabled = false,
   });
 
   AIChatState copyWith({
@@ -153,6 +153,13 @@ class AIChatController extends StateNotifier<AIChatState> {
     buffer.writeln(
         'User privacy mode is DISABLED. Use the following personal context to personalise your coaching:');
     buffer.writeln('Username: ${user.username}.');
+    
+    if (user.heightCm != null) {
+      buffer.writeln('Height: ${user.heightCm!.toStringAsFixed(1)} cm.');
+    }
+    if (user.weightKg != null) {
+      buffer.writeln('Weight: ${user.weightKg!.toStringAsFixed(1)} kg.');
+    }
 
     if (countdownSummary != null) {
       buffer.writeln(countdownSummary);