feat: add shell.rightEdge slot so plugin panels can push the page over

CHANGELOG.md

@@ -9,6 +9,7 @@
 - Windows on ARM builds of the desktop app (installer, MSI and portable)
 - Plugins get an event when a host is added
 - Plugins can start a short-lived session as a user and read the user's language, for tasks that run without a browser
+- Plugins can pin a panel to the right edge of the window that pushes the page over
 
 ### Changed
 

packages/plugin-sdk/PLUGIN-GUIDE.md

@@ -493,7 +493,7 @@ your own host settings, under `host.pluginSettings[<id>]`.
 
 Slots you can fill include `terminal.toolbar`, `terminal.toolbarStatus`, `terminal.sidePanel`,
 `terminal.overlay`, `dashboard.counters`, `dashboard.hostMetrics`, `admin.userTabs`, `hosts.importMenu`,
-`hosts.panel`, `credentials.badges`, `shell.overlay` and `tab.menu`. See
+`hosts.panel`, `credentials.badges`, `shell.overlay`, `shell.rightEdge` and `tab.menu`. See
 https://docs.termix.site/develop/more-extension-points.
 
 ## Looking native

src/ui/AppShell.tsx

@@ -3126,6 +3126,9 @@ export function AppShell({
               {renderSidebarPanels(rightRailView, false)}
             </DockPanel>
           )}
+
+          {/* Plugin panels pinned to the right edge, sized by the plugin */}
+          <ComponentSlot slotId="shell.rightEdge" />
         </div>
       </div>