vm: show docker containers beside the VMs

Docker.qml mirrors Virsh: the docker CLI, an event stream that runs for the
whole session, and `docker stats --no-stream` on the 2s timer only while the
page is up. Containers are grouped by compose project, since a stack is a
dozen containers that start and stop together; a container outside any
project is a group of one. Verbs are start, stop, restart and resume, by
container id, so no compose file is needed and nothing removes a container.

The event stream is filtered to lifecycle events: health checks emit exec_*
events every few seconds per container, which would make the stream a poll.
It dies with the daemon, so it is retried every 10s.

An inactive Loader keeps its last height and a Column still reserves it, so
collapsing one card left an empty box where its detail had been. Both the
container and VM detail loaders now hide while inactive; the VM one had the
same bug, unseen with a single VM.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 15 insertions, 8 deletions

diff --git a/desktop/modules/vm/VmModule.qml b/desktop/modules/vm/VmModule.qml
index bc6b190..fa88cef 100644
--- a/desktop/modules/vm/VmModule.qml
+++ b/desktop/modules/vm/VmModule.qml
@@ -29,7 +29,7 @@ Module {
 
     page: Component {
         Page {
-            title: "Virtual machines"
+            title: "VMs and containers"
             VmPage { width: parent.width }
         }
     }
@@ -38,14 +38,21 @@ Module {
     // the notification is the only feedback, since virsh output goes nowhere.
     property Process notifyProc: Process {}
 
+    function notify(target, action, message) {
+        notifyProc.command = ["notify-send", "--app-name=vm-manager",
+                              "--urgency=critical", "--icon=error",
+                              `${action} failed: ${target}`, message];
+        notifyProc.running = false;
+        notifyProc.running = true;
+    }
+
     property Connections conn: Connections {
         target: Virsh
-        function onActionFailed(vm, action, message) {
-            mod.notifyProc.command = ["notify-send", "--app-name=vm-manager",
-                                      "--urgency=critical", "--icon=error",
-                                      `${action} failed: ${vm}`, message];
-            mod.notifyProc.running = false;
-            mod.notifyProc.running = true;
-        }
+        function onActionFailed(vm, action, message) { mod.notify(vm, action, message); }
+    }
+
+    property Connections dockerConn: Connections {
+        target: Docker
+        function onActionFailed(target, action, message) { mod.notify(target, "docker " + action, message); }
     }
 }