feat: polish alpine shell feedback

apps/ui/js/workspace-setup.js

@@ -342,7 +342,9 @@ async function submitForm() {
       submit.disabled = false;
     }, 1400);
   } catch (error) {
-    alert(error.message || 'Failed to save workspace');
+    if (window.CrankUi) {
+      window.CrankUi.error(error.message || 'Failed to save workspace', 'Save failed');
+    }
     submit.disabled = false;
     submit.textContent = originalLabel;
   }
@@ -404,7 +406,9 @@ async function sendInvite() {
     document.getElementById('invite-success').style.display = '';
     await loadWorkspaceAccessData();
   } catch (error) {
-    alert(error.message || 'Failed to send invite');
+    if (window.CrankUi) {
+      window.CrankUi.error(error.message || 'Failed to send invite', 'Invite failed');
+    }
   }
 }
 
@@ -424,7 +428,9 @@ async function updateRole(select, userId) {
     renderMembers();
   } catch (error) {
     select.value = previous;
-    alert(error.message || 'Failed to update role');
+    if (window.CrankUi) {
+      window.CrankUi.error(error.message || 'Failed to update role', 'Role update failed');
+    }
   } finally {
     select.disabled = false;
   }
@@ -442,7 +448,9 @@ async function removeMember(userId, name) {
     await window.CrankApi.deleteMembership(workspaceFormState.workspaceId, userId);
     await loadWorkspaceAccessData();
   } catch (error) {
-    alert(error.message || 'Failed to remove member');
+    if (window.CrankUi) {
+      window.CrankUi.error(error.message || 'Failed to remove member', 'Member removal failed');
+    }
   }
 }
 
@@ -455,7 +463,9 @@ async function revokeInviteById(invitationId) {
     await window.CrankApi.deleteInvitation(workspaceFormState.workspaceId, invitationId);
     await loadWorkspaceAccessData();
   } catch (error) {
-    alert(error.message || 'Failed to revoke invite');
+    if (window.CrankUi) {
+      window.CrankUi.error(error.message || 'Failed to revoke invite', 'Invite revoke failed');
+    }
   }
 }
 
@@ -489,7 +499,9 @@ async function exportWorkspaceSnapshot() {
       : 'workspace';
     downloadJsonFile(slug + '-snapshot.json', snapshot);
   } catch (error) {
-    alert(error.message || 'Failed to export workspace');
+    if (window.CrankUi) {
+      window.CrankUi.error(error.message || 'Failed to export workspace', 'Export failed');
+    }
   }
 }
 
@@ -505,7 +517,9 @@ async function deleteWorkspaceAction() {
     await window.CrankApi.deleteWorkspace(workspaceFormState.workspaceId);
     await window.CrankAuth.logout();
   } catch (error) {
-    alert(error.message || 'Failed to delete workspace');
+    if (window.CrankUi) {
+      window.CrankUi.error(error.message || 'Failed to delete workspace', 'Delete failed');
+    }
   }
 }
 
@@ -536,7 +550,9 @@ async function initPage() {
     applyWorkspaceRecord(record);
     await loadWorkspaceAccessData();
   } catch (error) {
-    alert(error.message || 'Failed to load workspace');
+    if (window.CrankUi) {
+      window.CrankUi.error(error.message || 'Failed to load workspace', 'Workspace load failed');
+    }
   }
 }