refactor: update model name from gpt-4o-mini to gpt-5-nano across all files

examples/python/camera/camera-basic.py

@@ -28,7 +28,7 @@ def capture_and_analyze():
         role="Camera Feed Analyzer",
         goal="Analyze camera captures in real-time",
         backstory="Expert in real-time visual analysis with computer vision skills",
-        llm="gpt-4o-mini"
+        llm="gpt-5-nano"
     )
     
     # Initialize camera (0 for default camera)

examples/python/camera/camera-continuous.py

@@ -42,7 +42,7 @@ class ContinuousCameraMonitor:
             role="Security Camera Analyst",
             goal="Monitor camera feeds for activities and security events",
             backstory="Expert security analyst with computer vision skills specialized in real-time monitoring",
-            llm="gpt-4o-mini"
+            llm="gpt-5-nano"
         )
     
     def capture_frame(self, cap):

examples/python/camera/camera-multi-agent.py

@@ -57,7 +57,7 @@ def analyze_with_multiple_agents():
         role="Security Specialist",
         goal="Identify security threats and suspicious activities",
         backstory="Expert security analyst with years of experience in surveillance and threat detection",
-        llm="gpt-4o-mini"
+        llm="gpt-5-nano"
     )
     
     object_detector = Agent(
@@ -65,7 +65,7 @@ def analyze_with_multiple_agents():
         role="Object Recognition Specialist", 
         goal="Identify and catalog all objects in the scene",
         backstory="Computer vision expert specializing in object detection and classification",
-        llm="gpt-4o-mini"
+        llm="gpt-5-nano"
     )
     
     scene_analyst = Agent(
@@ -73,7 +73,7 @@ def analyze_with_multiple_agents():
         role="Scene Understanding Expert",
         goal="Provide comprehensive scene analysis and context",
         backstory="Environmental analyst expert in understanding spatial relationships and scene context",
-        llm="gpt-4o-mini"
+        llm="gpt-5-nano"
     )
     
     # Create specialized tasks

examples/python/camera/camera-video-analysis.py

@@ -39,7 +39,7 @@ class CameraVideoAnalyzer:
             role="Video Content Analyzer",
             goal="Analyze video content for activities, objects, and events",
             backstory="Expert in video analysis and temporal event detection with computer vision expertise",
-            llm="gpt-4o-mini"
+            llm="gpt-5-nano"
         )
     
     def record_video_segment(self, duration_seconds=10):