diff --git a/services/web-ui/public/screens-asset.jsx b/services/web-ui/public/screens-asset.jsx
index 12f35a3..f622c4d 100644
--- a/services/web-ui/public/screens-asset.jsx
+++ b/services/web-ui/public/screens-asset.jsx
@@ -243,7 +243,11 @@ function AssetDetail({ asset, onClose }) {
     setDownloading(true);
     window.ZAMPP_API.fetch('/assets/' + assetId + '/hires')
       .then(function(r) {
-        if (!r || !r.url) { window.alert('No hi-res source available for this asset.'); return; }
+        if (!r || !r.url) { 
+          if (window.toast) window.toast.error('No hi-res source available for this asset.');
+          else window.alert('No hi-res source available for this asset.'); 
+          return; 
+        }
         const a = document.createElement('a');
         a.href = r.url;
         a.download = r.filename || (asset.name + '.' + (r.ext || 'mov'));
@@ -253,7 +257,10 @@ function AssetDetail({ asset, onClose }) {
         a.click();
         document.body.removeChild(a);
       })
-      .catch(function(e) { window.alert('Download failed: ' + (e.message || 'unknown error')); })
+      .catch(function(e) { 
+        if (window.toast) window.toast.error('Download failed: ' + (e.message || 'unknown error'));
+        else window.alert('Download failed: ' + (e.message || 'unknown error')); 
+      })
       .finally(function() { setDownloading(false); });
   };
 
@@ -279,7 +286,10 @@ function AssetDetail({ asset, onClose }) {
     }))) return;
     window.ZAMPP_API.fetch('/assets/' + assetId + '?hard=true', { method: 'DELETE' })
       .then(function() { onClose && onClose(); })
-      .catch(function(e) { window.alert('Delete failed: ' + e.message); });
+      .catch(function(e) { 
+        if (window.toast) window.toast.error('Delete failed: ' + e.message);
+        else window.alert('Delete failed: ' + e.message); 
+      });
   };
 
   const retryProcessing = function() {
@@ -287,9 +297,13 @@ function AssetDetail({ asset, onClose }) {
     setRetrying(true);
     window.ZAMPP_API.fetch('/assets/' + assetId + '/retry', { method: 'POST' })
       .then(function() {
-        window.alert('Re-queued for processing. The proxy worker will pick it up shortly; refresh in a minute to see the player.');
+        if (window.toast) window.toast.success('Re-queued for processing. The proxy worker will pick it up shortly; refresh in a minute to see the player.');
+        else window.alert('Re-queued for processing. The proxy worker will pick it up shortly; refresh in a minute to see the player.');
+      })
+      .catch(function(e) { 
+        if (window.toast) window.toast.error('Retry failed: ' + (e.message || 'unknown error'));
+        else window.alert('Retry failed: ' + (e.message || 'unknown error')); 
       })
-      .catch(function(e) { window.alert('Retry failed: ' + (e.message || 'unknown error')); })
       .finally(function() { setRetrying(false); });
   };
 
@@ -298,16 +312,26 @@ function AssetDetail({ asset, onClose }) {
     setReprocessing(type);
     window.ZAMPP_API.fetch('/assets/' + assetId + '/reprocess?type=' + type, { method: 'POST' })
       .then(function() {
-        window.alert((type === 'proxy' ? 'Proxy' : 'Thumbnail') + ' job queued. Refresh in a moment to see the result.');
+        if (window.toast) window.toast.success((type === 'proxy' ? 'Proxy' : 'Thumbnail') + ' job queued. Refresh in a moment to see the result.');
+        else window.alert((type === 'proxy' ? 'Proxy' : 'Thumbnail') + ' job queued. Refresh in a moment to see the result.');
+      })
+      .catch(function(e) { 
+        if (window.toast) window.toast.error('Reprocess failed: ' + (e.message || 'unknown error'));
+        else window.alert('Reprocess failed: ' + (e.message || 'unknown error')); 
       })
-      .catch(function(e) { window.alert('Reprocess failed: ' + (e.message || 'unknown error')); })
       .finally(function() { setReprocessing(null); });
   };
 
   const regenFilmstrip = function() {
     window.ZAMPP_API.fetch('/assets/' + assetId + '/reprocess?type=filmstrip', { method: 'POST' })
-      .then(function() { window.alert('Filmstrip job queued: it will appear automatically when ready.'); })
-      .catch(function(e) { window.alert('Failed to queue filmstrip: ' + (e.message || 'unknown error')); });
+      .then(function() { 
+        if (window.toast) window.toast.success('Filmstrip job queued: it will appear automatically when ready.');
+        else window.alert('Filmstrip job queued: it will appear automatically when ready.'); 
+      })
+      .catch(function(e) { 
+        if (window.toast) window.toast.error('Failed to queue filmstrip: ' + (e.message || 'unknown error'));
+        else window.alert('Failed to queue filmstrip: ' + (e.message || 'unknown error')); 
+      });
   };
 
   // Map a /assets/:id/comments row into the legacy shape the consumer
@@ -352,7 +376,8 @@ function AssetDetail({ asset, onClose }) {
         setComments(function(c) { return [...c, _normalizeComment(row)]; });
       })
       .catch(function(e) {
-        window.alert('Could not post comment: ' + (e.message || 'unknown error'));
+        if (window.toast) window.toast.error('Could not post comment: ' + (e.message || 'unknown error'));
+        else window.alert('Could not post comment: ' + (e.message || 'unknown error'));
         setNewComment(text);
       });
   };
@@ -374,7 +399,10 @@ function AssetDetail({ asset, onClose }) {
       .then(function() {
         setComments(function(prev) { return prev.filter(x => x.id !== c.id); });
       })
-      .catch(function(e) { window.alert('Delete failed: ' + e.message); });
+      .catch(function(e) { 
+        if (window.toast) window.toast.error('Delete failed: ' + e.message);
+        else window.alert('Delete failed: ' + e.message); 
+      });
   };
 
   const visibleComments = comments.filter(function(c) { return showResolved || !c.resolved; });
diff --git a/services/web-ui/public/screens-library.jsx b/services/web-ui/public/screens-library.jsx
index a747c69..0e35fbc 100644
--- a/services/web-ui/public/screens-library.jsx
+++ b/services/web-ui/public/screens-library.jsx
@@ -35,7 +35,11 @@ function Library({ navigate, onOpenAsset, openProject, onClearProject, onOpenPro
   const [expandedBins, setExpandedBins] = React.useState(() => new Set((window.ZAMPP_DATA?.BINS||[]).map(b=>b.id)));
 
   const createBin = () => {
-    if (!openProject) { window.alert('Open a project first (Projects → click a project), then create a bin inside it.'); return; }
+    if (!openProject) { 
+      if (window.toast) window.toast.error('Open a project first (Projects → click a project), then create a bin inside it.');
+      else window.alert('Open a project first (Projects → click a project), then create a bin inside it.'); 
+      return; 
+    }
     setCreatingChildOf(null); setNewBinName(''); setCreatingBin(true);
   };
   const createSubBin = (parentId) => {
@@ -55,8 +59,15 @@ function Library({ navigate, onOpenAsset, openProject, onClearProject, onOpenPro
       body: JSON.stringify({ project_id: openProject.id, name: name.trim(), parent_id: parentId || null }),
     })
       .then(() => window.ZAMPP_API.fetch('/bins?project_id=' + openProject.id))
-      .then(list => { const n = (list||[]).map(b=>({...b,count:b.asset_count||0,icon:b.type||'grid'})); setBins(n); if (parentId) setExpandedBins(prev => { const s=new Set(prev); s.add(parentId); return s; }); })
-      .catch(e => window.alert('Could not create bin: ' + e.message));
+      .then(list => { 
+        const n = (list||[]).map(b=>({...b,count:b.asset_count||0,icon:b.type||'grid'})); 
+        setBins(n); 
+        if (parentId) setExpandedBins(prev => { const s=new Set(prev); s.add(parentId); return s; }); 
+      })
+      .catch(e => {
+        if (window.toast) window.toast.error('Could not create bin: ' + e.message);
+        else window.alert('Could not create bin: ' + e.message);
+      });
   };
   const [view, setView] = React.useState('grid');
   const [filter, setFilter] = React.useState('all'); // 'all', 'ready', 'processing', 'live', 'error', 'recent'
@@ -599,7 +610,8 @@ function AssetContextMenu({ asset, x, y, bins, onClose, onChanged, onOpen, onRen
     window.ZAMPP_API.fetch('/assets/' + asset.id + '/promote', { method: 'POST' })
       .then(function() {
         if (onChanged) onChanged();
-        window.alert('Promotion job queued. The file is being uploaded to S3 in the background.');
+        if (window.toast) window.toast.success('Promotion job queued. The file is being uploaded to S3 in the background.');
+        else window.alert('Promotion job queued. The file is being uploaded to S3 in the background.');
       })
       .catch(function(e) { alert('Promotion failed: ' + e.message); });
   };