Drop the Actions tab and give wide panels the full width

shopdb/plugins/base.py

@@ -372,8 +372,7 @@ class BasePlugin(ABC):
             'position':   int,        # order among panels
             'group':      str,        # OPTIONAL. Which tab on the detail page:
                                       # 'details' | 'software' | 'metrics'
-                                      # | 'actions' | 'activity'. Omitted means
-                                      # 'details'.
+                                      # | 'activity'. Omitted means 'details'.
         }
 
         ON 'group'. The detail pages are tabbed, and a panel says which tab it
@@ -384,8 +383,14 @@ class BasePlugin(ABC):
         existing plugin working untouched: an unknown or absent group resolves
         to 'details', which is the tab that holds what an asset IS. Reach for
         another group only when the panel is the thing that tab exists for -
-        an inventory listing, live telemetry, controls that act on the machine,
-        or a history feed.
+        an inventory listing, live telemetry, or a history feed.
+
+        There is deliberately no group for controls. A panel that acts on the
+        machine belongs beside the state it acts on: tracked services read as
+        telemetry first and a Start/Stop second, so they live in 'metrics' with
+        the rest of what the endpoint reports. Splitting the buttons away from
+        the state they change made a tab that held one card and answered no
+        question on its own.
 
         Consumed by GET /api/pluginui/asset-panels?assetid=<id>, which returns
         the panels matching that asset's type. Disabled plugins