Remove all browser lifecycle detection - embrace state persistence

- Remove unused reset_ui and on_page_load controllers
- Remove client-side session detection scripts
- Let browser remember last UI state (sessions persist)
- Users can return to landing via Main Page button
- Much simpler and cleaner code

app.py

@@ -23,31 +23,6 @@ from simple_session_manager import SESSION_MANAGER, get_session_by_alias
 server = get_server()
 state, ctrl = server.state, server.controller
 
-# Track client connections to detect new browser sessions
-_active_clients = set()
-
-@server.state.change("trame__busy")
-def _on_client_activity(*args, **kwargs):
-    """
-    Detect new client connections.
-    When trame__busy changes from None, it means a client just connected.
-    """
-    client_id = kwargs.get("__client_id")
-    if client_id and client_id not in _active_clients:
-        print(f"[APP] New client connected: {client_id}")
-        _active_clients.add(client_id)
-        
-        # ALWAYS reset to landing page for new connections
-        # This ensures browser reopens always start at landing
-        print(f"[APP] Resetting to landing page for new client")
-        state.current_page = None
-        state.session_active = False
-        state.session_card_visible = True
-        state.session_alias = ""
-        state.current_session_id = None
-        state.session_alias_input = ""
-        state.session_error = ""
-
 # --- App state
 state.current_page = None  # None = landing, "EM" or "QLBM"
 state.session_active = False
@@ -112,40 +87,6 @@ def on_session_selected(session_id: str):
         print(f"[APP] Error selecting session: {e}")
         state.session_error = str(e)
         state.session_active = False
-
-# --- Controller to reset UI on page load ---
-@ctrl.add("reset_ui")
-def _reset_ui():
-    """Reset UI to landing page (called when browser closes/reopens)."""
-    print(f"[RESET_UI] Resetting to landing page")
-    print(f"[RESET_UI] Current state: page={state.current_page}, session_active={state.session_active}, session_id={state.current_session_id}")
-    
-    state.current_page = None
-    state.session_card_visible = True
-    state.session_active = False
-    state.session_alias = ""
-    state.current_session_id = None
-    state.session_alias_input = ""
-    state.session_error = ""
-    state.session_action_trigger = None
-    
-    print(f"[RESET_UI] State after reset: page={state.current_page}, session_active={state.session_active}")
-
-
-@ctrl.add("on_page_load")
-def _on_page_load(is_new_session: bool):
-    """Handle page load event from browser."""
-    print(f"[PAGE_LOAD] is_new_session={is_new_session}")
-    print(f"[PAGE_LOAD] Current state: page={state.current_page}, session_active={state.session_active}, session_id={state.current_session_id}")
-    
-    if is_new_session:
-        print(f"[PAGE_LOAD] *** NEW BROWSER SESSION DETECTED ***")
-        print(f"[PAGE_LOAD] Resetting to landing page")
-        _reset_ui()
-    else:
-        print(f"[PAGE_LOAD] Page refresh in same browser session - keeping current state")
-
-
 # Watcher to reset navigation when no session is active
 @state.change("session_active")
 def _on_session_status_change(session_active, **kwargs):
@@ -254,37 +195,6 @@ with SinglePageLayout(server) as layout:
         .success-bounce { animation: successBounce 0.6s ease; color: #1e9e3e; }
     """)
     
-    # Simple client-side script to detect new browser sessions
-    # This is MUCH simpler than the complex lifecycle detection
-    with trame_html.Div():
-        trame_html.Script("""
-        console.log('[SESSION-CHECK] Checking browser session state...');
-        
-        // Check if this is a new browser session (sessionStorage is empty when browser reopens)
-        const SESSION_KEY = '__quantum_active__';
-        const wasActive = sessionStorage.getItem(SESSION_KEY);
-        
-        if (!wasActive) {
-            console.log('[SESSION-CHECK] New browser session - sessionStorage was empty');
-            sessionStorage.setItem(SESSION_KEY, 'true');
-            
-            // Wait for Trame to be ready, then reset to landing page
-            setTimeout(function() {
-                if (window.trame && window.trame.state) {
-                    console.log('[SESSION-CHECK] Resetting to landing page');
-                    window.trame.state.current_page = null;
-                    window.trame.state.session_active = false;
-                    window.trame.state.session_card_visible = true;
-                    window.trame.state.current_session_id = null;
-                }
-            }, 200);
-        } else {
-            console.log('[SESSION-CHECK] Same browser session - keeping state');
-        }
-        """)
-
-
-    
     with layout.toolbar:
         vuetify3.VSpacer()