diff --git a/apps/desktop/assets/app-icon.icns b/apps/desktop/assets/app-icon.icns
index 13a3da70..6b33bab4 100644
Binary files a/apps/desktop/assets/app-icon.icns and b/apps/desktop/assets/app-icon.icns differ
diff --git a/apps/desktop/assets/app-icon.ico b/apps/desktop/assets/app-icon.ico
index 7a4490dc..4825aac9 100644
Binary files a/apps/desktop/assets/app-icon.ico and b/apps/desktop/assets/app-icon.ico differ
diff --git a/apps/desktop/assets/app-icon.png b/apps/desktop/assets/app-icon.png
new file mode 100644
index 00000000..40f25f92
Binary files /dev/null and b/apps/desktop/assets/app-icon.png differ
diff --git a/apps/desktop/assets/tray-icon.png b/apps/desktop/assets/tray-icon.png
index 59807b0d..2ce30d75 100644
Binary files a/apps/desktop/assets/tray-icon.png and b/apps/desktop/assets/tray-icon.png differ
diff --git a/apps/desktop/electron-builder.yml b/apps/desktop/electron-builder.yml
index 752e858b..42626fff 100644
--- a/apps/desktop/electron-builder.yml
+++ b/apps/desktop/electron-builder.yml
@@ -47,6 +47,7 @@ portable:
   artifactName: OpenPets-${version}-win-${arch}-portable.${ext}
 
 linux:
+  icon: assets/app-icon.png
   target:
     - AppImage
     - deb
diff --git a/apps/desktop/preload.cjs b/apps/desktop/preload.cjs
index 2a127890..4560fd22 100644
--- a/apps/desktop/preload.cjs
+++ b/apps/desktop/preload.cjs
@@ -182,6 +182,8 @@ async function renderAgentSetup(selectedPetId, commandMode) {
   statusTitle.textContent = statusTitleFor(snapshot);
   details.textContent = snapshot.status.details;
   renderPetSelect(select, snapshot, selected);
+  const devModeRow = devMode.closest(".dev-mode-row");
+  if (devModeRow instanceof HTMLElement) devModeRow.hidden = !snapshot.localDevAvailable;
   devMode.checked = snapshot.commandMode === "local";
   devMode.disabled = !snapshot.localDevAvailable;
   commandPreview.textContent = snapshot.preview.displayCommand;