clear cache always on startup

app.py

@@ -24,7 +24,9 @@ agent = CodeAgent(
     verbosity_level=2,
 )
 
-@cached(LRUCache(maxsize=100))
+cache = LRUCache(maxsize=100)
+
+@cached(cache)
 def get_plantuml_diagram(message):
     prompt = get_prompt(message)
     response = agent.run(prompt)
@@ -37,6 +39,7 @@ def respond(message):
     return "", plantuml_code, svg_output
 
 if __name__ == "__main__":
+    cache.clear()
     demo = create_interface(respond)
     demo.launch()