fix: correction erreur 405 suppression, ajout navigation chats et mise a jour Roadmap

main.py

@@ -157,7 +157,7 @@ def render_sidebar():
         pin_icon = "📌" if data.get('pinned', False) else "📍"
         items.append(
             Div(
-                Span(data['title'], style="flex:1; cursor:pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;"),
+                Span(data['title'], hx_post=f"/load_chat/{chat_id}", hx_target="body", style="flex:1; cursor:pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;"),
                 # Bouton Épingler
                 Button(pin_icon, cls="history-btn", hx_post=f"/pin/{chat_id}", hx_target="#sidebar-content", hx_swap="innerHTML"),
                 # Bouton Renommer