add client platform screenshots

content/docs/manage/clients/platforms/android.mdx

@@ -3,6 +3,14 @@ title: "Android"
 description: "Install, configure, and update the Pangolin app for Android"
 ---
 
+<Frame caption="Pangolin for Android — home screen">
+  <img
+    src="/images/android_client_ui.png"
+    alt="Pangolin Android app home screen showing connected status, account, and links"
+    style={{ width: "280px", height: "auto" }}
+  />
+</Frame>
+
 ## Install
 
 - [Pangolin on Google Play](https://play.google.com/store/apps/details?id=net.pangolin.Pangolin) - This is the official page to download the latest Pangolin app for Android devices.

content/docs/manage/clients/platforms/ios.mdx

@@ -3,6 +3,14 @@ title: "iOS/iPadOS"
 description: "Install, configure, and update the Pangolin app for iOS and iPadOS"
 ---
 
+<Frame caption="Pangolin for iOS — home screen">
+  <img
+    src="/images/ios_client_ui.png"
+    alt="Pangolin iOS app home screen showing connected status, account, and links"
+    style={{ width: "280px", height: "auto" }}
+  />
+</Frame>
+
 ## Install
 
 - [Pangolin on the App Store](https://apps.apple.com/us/app/pangolin-client/id6757407406) - This is the official page to download the latest Pangolin app for iOS and iPadOS.

content/docs/manage/clients/platforms/mac.mdx

@@ -3,6 +3,13 @@ title: "Mac"
 description: "Install, configure, and update the Pangolin client for Mac"
 ---
 
+<Frame caption="Pangolin for Mac — preferences and menu bar">
+  <img
+    src="/images/mac_client_ui.jpeg"
+    alt="Pangolin Preferences window and menu bar dropdown on macOS showing connected status"
+  />
+</Frame>
+
 ## Install
 
 - [Pangolin for macOS Installer](https://pangolin.net/downloads/mac) - This is the official page to download the latest installer file for macOS.

content/docs/manage/clients/platforms/windows.mdx

@@ -3,6 +3,13 @@ title: "Windows"
 description: "Install, configure, and update the Pangolin client for Windows"
 ---
 
+<Frame caption="Pangolin for Windows — preferences and system tray menu">
+  <img
+    src="/images/windows_client_ui.png"
+    alt="Pangolin Preferences window and system tray menu on Windows showing connected status"
+  />
+</Frame>
+
 ## Install
 
 - [Pangolin for Windows Installer](https://pangolin.net/downloads/windows) - This is the official page to download the latest installer file for Windows.