fix: scope auto-reconnect failure cleanup to connection and document runtime toggle

Author: datlechin

TablePro/AppDelegate+WindowConfig.swift

@@ -365,18 +365,21 @@ extension AppDelegate {
                     window.close()
                 }
             } catch is CancellationError {
-                for window in NSApp.windows where self.isMainWindow(window) {
+                for window in WindowLifecycleMonitor.shared.windows(for: connection.id) {
                     window.close()
                 }
-                self.openWelcomeWindow()
+                if !NSApp.windows.contains(where: { self.isMainWindow($0) && $0.isVisible }) {
+                    self.openWelcomeWindow()
+                }
             } catch {
                 windowLogger.error("Auto-reconnect failed for '\(connection.name)': \(error.localizedDescription)")
 
-                for window in NSApp.windows where self.isMainWindow(window) {
+                for window in WindowLifecycleMonitor.shared.windows(for: connection.id) {
                     window.close()
                 }
-
-                self.openWelcomeWindow()
+                if !NSApp.windows.contains(where: { self.isMainWindow($0) && $0.isVisible }) {
+                    self.openWelcomeWindow()
+                }
             }
         }
     }

docs/customization/settings.mdx

@@ -303,6 +303,8 @@ Preview tabs show "Preview" in the subtitle and are not persisted across restart
 
 By default, each database connection opens its own window — tabs for the same connection are grouped together, while different connections get separate windows. Enable this setting to group all tabs into a single window regardless of which connection they belong to.
 
+The setting takes effect for newly opened connections. Existing windows keep their current grouping until closed.
+
 ## Keyboard Settings
 
 Customize keyboard shortcuts for menu actions. See [Keyboard Shortcuts](/features/keyboard-shortcuts#customizing-shortcuts) for full details.