Move Check updates into action bar and report results in the tray.

app.js

@@ -8590,7 +8590,12 @@ document.addEventListener('DOMContentLoaded', () => {
     if (typeof window.refreshRegistryPanel === 'function') window.refreshRegistryPanel();
   });
   document.getElementById('check-image-updates-btn')?.addEventListener('click', () => {
-    scheduleImageUpdateCheck({ force: true, clearCache: true, immediate: true });
+    scheduleImageUpdateCheck({
+      force: true,
+      clearCache: true,
+      immediate: true,
+      notify: true,
+    });
   });
 
   // Prefer smart network modal for create buttons
@@ -9712,7 +9717,8 @@ function ensureInitialImageUpdateCheck() {
   if (!peerId) return;
   if (imageUpdateInitialPeerId === peerId) return;
   imageUpdateInitialPeerId = peerId;
-  scheduleImageUpdateCheck({ force: false, immediate: true, initial: true });
+  // Silent: table indicators only — no tray spam on Containers tab open
+  scheduleImageUpdateCheck({ force: false, immediate: true, initial: true, silent: true });
 }
 
 async function runImageUpdateCheck(opts = {}) {
@@ -9720,13 +9726,16 @@ async function runImageUpdateCheck(opts = {}) {
   if (currentView && currentView !== 'containers' && !opts.force) return;
   if (imageUpdateCheckInFlight && !opts.force) return;
   imageUpdateCheckInFlight = true;
+  // Tray only for explicit user-triggered checks — suppress on page-load / background
+  const notify =
+    opts.notify === true || (opts.force === true && opts.initial !== true && opts.silent !== true);
+  const silent = opts.silent === true || opts.initial === true || !notify;
+
   const btn = document.getElementById('check-image-updates-btn');
-  const line = document.getElementById('image-update-status-line');
   if (btn) {
     btn.disabled = true;
-    btn.innerHTML = '<i class="fas fa-sync-alt fa-spin me-1"></i>Checking…';
+    btn.innerHTML = '<i class="fas fa-sync-alt fa-spin"></i><span>Checking…</span>';
   }
-  if (line) line.textContent = 'Checking image digests against registries…';
 
   // Mark visible rows as checking on force or first tab load (no client cache yet)
   const listElement = domCache.containerList || containerList;
@@ -9765,12 +9774,12 @@ async function runImageUpdateCheck(opts = {}) {
         applyImageUpdateToRow(row, row._pdContainer);
       });
     }
+    if (!silent) {
       const statuses = Object.values(byImage);
       const outdated = statuses.filter((s) => s.status === 'outdated').length;
       const updated = statuses.filter((s) => s.status === 'updated').length;
       const unknown = statuses.filter((s) => s.status === 'unknown' || s.status === 'skipped').length;
       const withErr = statuses.filter((s) => s.error).slice(0, 2);
-    if (line) {
       let text =
         outdated > 0
           ? `${outdated} image(s) have updates · ${updated} up to date · ${unknown} unknown/skipped`
@@ -9782,20 +9791,28 @@ async function runImageUpdateCheck(opts = {}) {
       if (withErr.length) {
         text += ` — ${withErr.map((s) => s.error).join('; ')}`;
       }
-      line.textContent = text;
-      line.title = statuses
-        .filter((s) => s.error)
-        .map((s) => `${s.image}: ${s.error}`)
-        .join('\n') || text;
+      const trayType = outdated > 0 ? 'warning' : withErr.length ? 'warning' : 'info';
+      if (typeof notificationManager?.add === 'function') {
+        notificationManager.add(trayType, text, { badge: outdated > 0 });
+      } else if (typeof showAlert === 'function') {
+        showAlert(trayType, text);
+      }
     }
   } catch (err) {
-    if (line) line.textContent = err?.message || 'Update check failed';
     console.warn('[image-updates]', err);
+    if (!silent) {
+      const msg = err?.message || 'Update check failed';
+      if (typeof notificationManager?.add === 'function') {
+        notificationManager.add('danger', msg, { badge: true });
+      } else if (typeof showAlert === 'function') {
+        showAlert('danger', msg);
+      }
+    }
   } finally {
     imageUpdateCheckInFlight = false;
     if (btn) {
       btn.disabled = false;
-      btn.innerHTML = '<i class="fas fa-sync-alt me-1"></i>Check updates';
+      btn.innerHTML = '<i class="fas fa-sync-alt"></i><span>Check updates</span>';
     }
   }
 }

index.html

@@ -999,20 +999,15 @@
             <button type="button" class="btn btn-sm btn-outline-secondary" onclick="window.pruneResource && window.pruneResource('containers')" data-min-role="admin" title="Prune stopped containers">
               <i class="fas fa-broom"></i><span>Prune</span>
             </button>
+            <button type="button" class="btn btn-sm btn-outline-info" id="check-image-updates-btn" title="Recheck registry digests for all containers">
+              <i class="fas fa-sync-alt"></i><span>Check updates</span>
+            </button>
             <button type="button" class="btn btn-sm btn-outline-secondary containers-action-btn" data-bulk-op="clear" onclick="clearContainerSelection()" title="Clear selection" disabled>
               <i class="fas fa-times"></i><span>Clear</span>
             </button>
           </div>
         </div>
       </div>
-      <div class="d-flex flex-wrap align-items-center justify-content-between gap-2 mb-2">
-        <p class="small text-muted mb-0" id="image-update-status-line">
-          Image updates: indicators compare local digests to the registry .
-        </p>
-        <button type="button" class="btn btn-sm btn-outline-info" id="check-image-updates-btn" title="Recheck registry digests for all containers">
-          <i class="fas fa-sync-alt me-1"></i>Check updates
-        </button>
-      </div>
       <div class="table-responsive">
         <table class="table table-dark table-striped" id="containers-table">
           <thead>