Fix collapse, group skew, empty tables and the tab strip scrollbar

frontend/src/assets/style.css

@@ -1083,6 +1083,21 @@ td.actions .btn + .btn {
   display: contents;
 }
 
+/* Full-width alternative to .content-grid, for a tab holding one long list
+   rather than short fact cards. An application inventory or an event feed
+   split into two balanced columns reads as two unrelated lists, and the eye
+   has to hunt for where the first one ended. */
+.detail-full {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+  margin-bottom: 25px;
+}
+
+.detail-full > * {
+  min-width: 0;
+}
+
 /* Section Cards */
 .section-card {
   background: var(--bg-card);

frontend/src/components/AssetDetailTabs.vue

@@ -70,11 +70,21 @@ function onKey(event, index) {
 .adt {
   display: flex;
   gap: 2px;
+  /* overflow-y MUST be stated. Per the spec, when one axis is not `visible`
+     the other computes from `visible` to `auto` - so `overflow-x: auto` alone
+     silently makes this scrollable vertically too, and the -1px margin the
+     tabs use to sit on the border is enough to trip it. The result is a tiny
+     vertical scrollbar inside the strip. */
   overflow-x: auto;
+  overflow-y: hidden;
+  scrollbar-width: thin;
   border-bottom: 1px solid var(--border);
   margin-bottom: 1.25rem;
 }
 .adt-tab {
+  /* Never shrink: a squeezed tab wraps its label, which grows the strip and is
+     what horizontal scrolling exists to avoid. */
+  flex: none;
   font: inherit;
   font-size: 0.875rem;
   font-weight: 500;

frontend/src/components/PluginAssetPanels.vue

@@ -191,18 +191,30 @@ const props = defineProps({
 
 const panels = ref([])
 
-// The server resolves every panel's group before we see it, so an unknown or
+// The groups this build renders. A panel in any other group would be fetched,
-// absent one is already 'details' by the time it arrives here. Filtering can
+// held, and shown on no tab at all.
-// therefore be a plain equality check and nothing falls through the gap.
+//
+// The server normalises group before we see it, so a version-matched pair
+// never lands here. A MISMATCHED pair does: deploy a new frontend against a
+// server still serving an older vocabulary and every panel in a group that
+// has since been renamed or removed silently disappears. That is what happened
+// to tracked services when it moved out of 'actions' - the backend still said
+// 'actions', this build had no such tab, and the card was simply gone with
+// nothing logged. Fall back the same way the server does rather than drop it.
+const RENDERED_GROUPS = ['details', 'software', 'metrics', 'activity']
+function groupOf(panel) {
+  return RENDERED_GROUPS.includes(panel.group) ? panel.group : 'details'
+}
+
 const groupedPanels = computed(() =>
-  props.group ? panels.value.filter((p) => p.group === props.group) : panels.value
+  props.group ? panels.value.filter((p) => groupOf(p) === props.group) : panels.value
 )
 
 // Which groups actually have a panel with data, so a parent can hide a tab
 // rather than offering an empty one.
 const populatedGroups = computed(() => {
   const seen = new Set()
-  panels.value.forEach((p) => { if (panelVisible(p)) seen.add(p.group || 'details') })
+  panels.value.forEach((p) => { if (panelVisible(p)) seen.add(groupOf(p)) })
   return seen
 })
 

frontend/src/components/pluginAssetPanels.js

@@ -246,11 +246,17 @@ export function rowAction(panel, item) {
   }
 }
 
+// A panel declaring `empty` is asking to stay visible with nothing in it and
+// say so - "No installed software reported." is an answer, where an absent
+// card is a question. `list` honoured that and `table` did not, for no reason
+// anybody wrote down, so a table panel with an empty message still vanished.
+// It matters more now that a panel can be the only thing in a tab: the tab
+// itself disappears with it.
 export function panelVisible(panel) {
   if (panel.render === 'tabs') return tabSections(panel).length > 0
   if (panel.render === 'list') return rows(panel).length > 0 || !!panel.empty
   if (panel.render === 'keyvalue') return keyvalueFields(panel).length > 0
-  if (panel.render === 'table') return rows(panel).length > 0
+  if (panel.render === 'table') return rows(panel).length > 0 || !!panel.empty
   if (panel.render === 'badge') return badges(panel).length > 0
   return false
 }

frontend/src/components/pluginAssetPanels.spec.js

@@ -327,3 +327,16 @@ describe('facet chips on a card that shows a health dot', () => {
     expect(facetedRows(services, ['Start Pending']).length).toBe(1)
   })
 })
+
+describe('panelVisible and empty', () => {
+  it('keeps a table panel that declares an empty message', () => {
+    // It is the only card in the Software tab, so hiding it hides the tab and
+    // the reader cannot tell "nothing reported" from "feature missing".
+    const panel = { render: 'table', _data: { items: [] }, empty: 'No installed software reported.' }
+    expect(panelVisible(panel)).toBe(true)
+  })
+
+  it('still hides a table panel with nothing to say', () => {
+    expect(panelVisible({ render: 'table', _data: { items: [] } })).toBe(false)
+  })
+})

plugins/computers/frontend/views/PCDetail.vue

@@ -603,11 +603,6 @@ async function confirmRetire() {
 </script>
 
 <style scoped>
-/* Software and Activity are single long lists, so they use the full page width
-   rather than .content-grid's two balanced columns. Cards inside still need
-   their own vertical rhythm, which the column flow was providing. */
-.detail-full { display: flex; flex-direction: column; gap: 1rem; }
-.detail-full > * { min-width: 0; }
 
 /* PC-specific styles - shared styles are in global style.css */
 

plugins/endpoints/plugin.py

@@ -462,17 +462,20 @@ class EndpointsPlugin(BasePlugin):
                 'group': 'metrics',
             },
             {
-                # Installed-software (SBOM) inventory. Low-priority reference
+                # Installed-software (SBOM) inventory. Raw discovered list for
-                # data, not something looked at on every visit, so it starts
-                # collapsed and sits near the bottom. Raw discovered list for
                 # now: no managed-application linkage is surfaced yet.
+                #
+                # NOT collapsible. It used to be, and started collapsed, because
+                # it was low-priority reference data sitting near the bottom of
+                # one long page. It is now the Software tab's whole reason to
+                # exist, and somebody who clicked that tab has already said what
+                # they came for - making them click again to see it is a step
+                # that asks a question already answered.
                 'id': 'endpoints-applications',
                 'title': 'Installed software',
                 'assettypes': ['computer'],
                 'endpoint': '/api/endpoints/asset/{assetid}/applications',
                 'render': 'table',
-                'collapsible': True,
-                'collapsedDefault': True,
                 'columns': [
                     {'key': 'displayname', 'label': 'Name'},
                     {'key': 'displayversion', 'label': 'Version'},