docs: remove obsolete mobile sidebar references

apps/docs/docs/getting-started/after-the-installation.mdx

@@ -18,7 +18,6 @@ import addContentMenuCurrent from "./img/onboarding-add-content-menu-current.png
 import chooseItemCurrent from "./img/onboarding-choose-item-current.png";
 import editItemCurrent from "./img/onboarding-edit-item-current.png";
 import boardsHomeMobileMenu from "./img/onboarding-boards-home-mobile-menu.png";
-import layoutSettingsCurrent from "./img/onboarding-layout-settings-current.png";
 import moveResizeMenuCurrent from "./img/onboarding-move-resize-menu-current.png";
 import currentBoardMobileView from "./img/onboarding-board-mobile-current.png";
 import manageExportOldHomarr from "./img/old-homarr-export-data.png";
@@ -175,17 +174,6 @@ New boards start with **Mobile** and **Base** responsive layouts automatically,
 desktops without creating extra layouts first. Mobile starts at `0px` with 3 columns and Base at `768px` with 10 columns.
 Each layout keeps its own tile positions and sizes.
 
-<figure>
-  <img
-    src={layoutSettingsCurrent}
-    alt="Board Settings Layout section showing independent Mobile and Base layout cards"
-    style={{ maxWidth: "100%" }}
-  />
-  <figcaption>
-    Mobile and Base are protected layouts inside the same board; each keeps its own positions and sizes.
-  </figcaption>
-</figure>
-
 ## Add your first app to Homarr
 
 To add links to your dashboard, you must first add them as an "app".

apps/docs/docs/management/boards/index.mdx

@@ -13,7 +13,6 @@ import iconColorImage from "./img/icon-color.png";
 import itemRadiusImage from "./img/item-radius.png";
 import layoutSettingsImage from "./img/layout-settings.png";
 import layoutSettingsCustomRailsImage from "./img/layout-settings-custom-rails.png";
-import layoutSettingsMobileImage from "./img/layout-settings-mobile.png";
 import boardViewModeImage from "./img/board-view-mode.png";
 import boardEditModeImage from "./img/board-edit-mode.png";
 import addBoardContentMenuImage from "./img/add-board-content-menu.png";
@@ -237,14 +236,6 @@ pixel of the screen range where the layout is active.
 
 Choose **Edit layout** to open the real board editor at that representative width on desktop. Save returns to Layout Settings. Cancel discards the local changes. On phones and tablets, the normal board editor continues to use the layout selected by the device width.
 
-On a narrow screen, the same settings page stacks each layout card vertically so the preview and controls remain usable:
-
-<img
-  src={layoutSettingsMobileImage}
-  alt="Responsive board layout settings stacked in a narrow mobile viewport"
-  style={{ maxWidth: "390px" }}
-/>
-
 ### Containers and rails
 
 Containers can hold apps, widgets, and nested Containers.