diff --git a/apps/sim/app/api/folders/[id]/route.ts b/apps/sim/app/api/folders/[id]/route.ts
index 8c42b9656..773427e23 100644
--- a/apps/sim/app/api/folders/[id]/route.ts
+++ b/apps/sim/app/api/folders/[id]/route.ts
@@ -141,6 +141,23 @@ export async function DELETE(
       )
     }
 
+    // Check if deleting this folder would delete the last workflow(s) in the workspace
+    const workflowsInFolder = await countWorkflowsInFolderRecursively(
+      id,
+      existingFolder.workspaceId
+    )
+    const totalWorkflowsInWorkspace = await db
+      .select({ id: workflow.id })
+      .from(workflow)
+      .where(eq(workflow.workspaceId, existingFolder.workspaceId))
+
+    if (workflowsInFolder > 0 && workflowsInFolder >= totalWorkflowsInWorkspace.length) {
+      return NextResponse.json(
+        { error: 'Cannot delete folder containing the only workflow(s) in the workspace' },
+        { status: 400 }
+      )
+    }
+
     // Recursively delete folder and all its contents
     const deletionStats = await deleteFolderRecursively(id, existingFolder.workspaceId)
 
@@ -202,6 +219,34 @@ async function deleteFolderRecursively(
   return stats
 }
 
+/**
+ * Counts the number of workflows in a folder and all its subfolders recursively.
+ */
+async function countWorkflowsInFolderRecursively(
+  folderId: string,
+  workspaceId: string
+): Promise<number> {
+  let count = 0
+
+  const workflowsInFolder = await db
+    .select({ id: workflow.id })
+    .from(workflow)
+    .where(and(eq(workflow.folderId, folderId), eq(workflow.workspaceId, workspaceId)))
+
+  count += workflowsInFolder.length
+
+  const childFolders = await db
+    .select({ id: workflowFolder.id })
+    .from(workflowFolder)
+    .where(and(eq(workflowFolder.parentId, folderId), eq(workflowFolder.workspaceId, workspaceId)))
+
+  for (const childFolder of childFolders) {
+    count += await countWorkflowsInFolderRecursively(childFolder.id, workspaceId)
+  }
+
+  return count
+}
+
 // Helper function to check for circular references
 async function checkForCircularReference(folderId: string, parentId: string): Promise<boolean> {
   let currentParentId: string | null = parentId
diff --git a/apps/sim/app/api/workflows/[id]/route.test.ts b/apps/sim/app/api/workflows/[id]/route.test.ts
index def0eff81..abae66199 100644
--- a/apps/sim/app/api/workflows/[id]/route.test.ts
+++ b/apps/sim/app/api/workflows/[id]/route.test.ts
@@ -14,6 +14,7 @@ const mockGetWorkflowById = vi.fn()
 const mockGetWorkflowAccessContext = vi.fn()
 const mockDbDelete = vi.fn()
 const mockDbUpdate = vi.fn()
+const mockDbSelect = vi.fn()
 
 vi.mock('@/lib/auth', () => ({
   getSession: () => mockGetSession(),
@@ -49,6 +50,7 @@ vi.mock('@sim/db', () => ({
   db: {
     delete: () => mockDbDelete(),
     update: () => mockDbUpdate(),
+    select: () => mockDbSelect(),
   },
   workflow: {},
 }))
@@ -327,6 +329,13 @@ describe('Workflow By ID API Route', () => {
         isWorkspaceOwner: false,
       })
 
+      // Mock db.select() to return multiple workflows so deletion is allowed
+      mockDbSelect.mockReturnValue({
+        from: vi.fn().mockReturnValue({
+          where: vi.fn().mockResolvedValue([{ id: 'workflow-123' }, { id: 'workflow-456' }]),
+        }),
+      })
+
       mockDbDelete.mockReturnValue({
         where: vi.fn().mockResolvedValue([{ id: 'workflow-123' }]),
       })
@@ -347,6 +356,46 @@ describe('Workflow By ID API Route', () => {
       expect(data.success).toBe(true)
     })
 
+    it('should prevent deletion of the last workflow in workspace', async () => {
+      const mockWorkflow = {
+        id: 'workflow-123',
+        userId: 'user-123',
+        name: 'Test Workflow',
+        workspaceId: 'workspace-456',
+      }
+
+      mockGetSession.mockResolvedValue({
+        user: { id: 'user-123' },
+      })
+
+      mockGetWorkflowById.mockResolvedValue(mockWorkflow)
+      mockGetWorkflowAccessContext.mockResolvedValue({
+        workflow: mockWorkflow,
+        workspaceOwnerId: 'workspace-456',
+        workspacePermission: 'admin',
+        isOwner: true,
+        isWorkspaceOwner: false,
+      })
+
+      // Mock db.select() to return only 1 workflow (the one being deleted)
+      mockDbSelect.mockReturnValue({
+        from: vi.fn().mockReturnValue({
+          where: vi.fn().mockResolvedValue([{ id: 'workflow-123' }]),
+        }),
+      })
+
+      const req = new NextRequest('http://localhost:3000/api/workflows/workflow-123', {
+        method: 'DELETE',
+      })
+      const params = Promise.resolve({ id: 'workflow-123' })
+
+      const response = await DELETE(req, { params })
+
+      expect(response.status).toBe(400)
+      const data = await response.json()
+      expect(data.error).toBe('Cannot delete the only workflow in the workspace')
+    })
+
     it.concurrent('should deny deletion for non-admin users', async () => {
       const mockWorkflow = {
         id: 'workflow-123',
diff --git a/apps/sim/app/api/workflows/[id]/route.ts b/apps/sim/app/api/workflows/[id]/route.ts
index e62c245da..c4bab613d 100644
--- a/apps/sim/app/api/workflows/[id]/route.ts
+++ b/apps/sim/app/api/workflows/[id]/route.ts
@@ -228,6 +228,21 @@ export async function DELETE(
       return NextResponse.json({ error: 'Access denied' }, { status: 403 })
     }
 
+    // Check if this is the last workflow in the workspace
+    if (workflowData.workspaceId) {
+      const totalWorkflowsInWorkspace = await db
+        .select({ id: workflow.id })
+        .from(workflow)
+        .where(eq(workflow.workspaceId, workflowData.workspaceId))
+
+      if (totalWorkflowsInWorkspace.length <= 1) {
+        return NextResponse.json(
+          { error: 'Cannot delete the only workflow in the workspace' },
+          { status: 400 }
+        )
+      }
+    }
+
     // Check if workflow has published templates before deletion
     const { searchParams } = new URL(request.url)
     const checkTemplates = searchParams.get('check-templates') === 'true'
diff --git a/apps/sim/app/workspace/[workspaceId]/knowledge/components/create-base-modal/create-base-modal.tsx b/apps/sim/app/workspace/[workspaceId]/knowledge/components/create-base-modal/create-base-modal.tsx
index d71a3641d..4d95232a0 100644
--- a/apps/sim/app/workspace/[workspaceId]/knowledge/components/create-base-modal/create-base-modal.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/knowledge/components/create-base-modal/create-base-modal.tsx
@@ -339,12 +339,31 @@ export function CreateBaseModal({
             <div ref={scrollContainerRef} className='min-h-0 flex-1 overflow-y-auto'>
               <div className='space-y-[12px]'>
                 <div className='flex flex-col gap-[8px]'>
-                  <Label htmlFor='name'>Name</Label>
+                  <Label htmlFor='kb-name'>Name</Label>
+                  {/* Hidden decoy fields to prevent browser autofill */}
+                  <input
+                    type='text'
+                    name='fakeusernameremembered'
+                    autoComplete='username'
+                    style={{
+                      position: 'absolute',
+                      left: '-9999px',
+                      opacity: 0,
+                      pointerEvents: 'none',
+                    }}
+                    tabIndex={-1}
+                    readOnly
+                  />
                   <Input
-                    id='name'
+                    id='kb-name'
                     placeholder='Enter knowledge base name'
                     {...register('name')}
                     className={cn(errors.name && 'border-[var(--text-error)]')}
+                    autoComplete='off'
+                    autoCorrect='off'
+                    autoCapitalize='off'
+                    data-lpignore='true'
+                    data-form-type='other'
                   />
                 </div>
 
diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/api-keys/api-keys.tsx b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/api-keys/api-keys.tsx
index d7b5bfa69..bbe606381 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/api-keys/api-keys.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/api-keys/api-keys.tsx
@@ -490,6 +490,20 @@ export function ApiKeys({ onOpenChange, registerCloseHandler }: ApiKeysProps) {
                 <p className='font-medium text-[13px] text-[var(--text-secondary)]'>
                   Enter a name for your API key to help you identify it later.
                 </p>
+                {/* Hidden decoy fields to prevent browser autofill */}
+                <input
+                  type='text'
+                  name='fakeusernameremembered'
+                  autoComplete='username'
+                  style={{
+                    position: 'absolute',
+                    left: '-9999px',
+                    opacity: 0,
+                    pointerEvents: 'none',
+                  }}
+                  tabIndex={-1}
+                  readOnly
+                />
                 <EmcnInput
                   value={newKeyName}
                   onChange={(e) => {
@@ -499,6 +513,12 @@ export function ApiKeys({ onOpenChange, registerCloseHandler }: ApiKeysProps) {
                   placeholder='e.g., Development, Production'
                   className='h-9'
                   autoFocus
+                  name='api_key_label'
+                  autoComplete='off'
+                  autoCorrect='off'
+                  autoCapitalize='off'
+                  data-lpignore='true'
+                  data-form-type='other'
                 />
                 {createError && (
                   <p className='text-[11px] text-[var(--text-error)] leading-tight'>
diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/team-management/components/member-invitation-card/member-invitation-card.tsx b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/team-management/components/member-invitation-card/member-invitation-card.tsx
index 4285142fe..15b36fffb 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/team-management/components/member-invitation-card/member-invitation-card.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/team-management/components/member-invitation-card/member-invitation-card.tsx
@@ -141,12 +141,37 @@ export function MemberInvitationCard({
         {/* Main invitation input */}
         <div className='flex items-start gap-2'>
           <div className='flex-1'>
+            {/* Hidden decoy fields to prevent browser autofill */}
+            <input
+              type='text'
+              name='fakeusernameremembered'
+              autoComplete='username'
+              style={{ position: 'absolute', left: '-9999px', opacity: 0, pointerEvents: 'none' }}
+              tabIndex={-1}
+              readOnly
+            />
+            <input
+              type='email'
+              name='fakeemailremembered'
+              autoComplete='email'
+              style={{ position: 'absolute', left: '-9999px', opacity: 0, pointerEvents: 'none' }}
+              tabIndex={-1}
+              readOnly
+            />
             <Input
               placeholder='Enter email address'
               value={inviteEmail}
               onChange={handleEmailChange}
               disabled={isInviting || !hasAvailableSeats}
               className={cn(emailError && 'border-red-500 focus-visible:ring-red-500')}
+              name='member_invite_field'
+              autoComplete='off'
+              autoCorrect='off'
+              autoCapitalize='off'
+              spellCheck={false}
+              data-lpignore='true'
+              data-form-type='other'
+              aria-autocomplete='none'
             />
             {emailError && (
               <p className='mt-1 text-[#DC2626] text-[11px] leading-tight dark:text-[#F87171]'>
diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/team-management/components/no-organization-view/no-organization-view.tsx b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/team-management/components/no-organization-view/no-organization-view.tsx
index 40e1754c8..582ca27d3 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/team-management/components/no-organization-view/no-organization-view.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/team-management/components/no-organization-view/no-organization-view.tsx
@@ -55,16 +55,31 @@ export function NoOrganizationView({
 
           {/* Form fields - clean layout without card */}
           <div className='space-y-4'>
+            {/* Hidden decoy field to prevent browser autofill */}
+            <input
+              type='text'
+              name='fakeusernameremembered'
+              autoComplete='username'
+              style={{ position: 'absolute', left: '-9999px', opacity: 0, pointerEvents: 'none' }}
+              tabIndex={-1}
+              readOnly
+            />
             <div>
-              <Label htmlFor='orgName' className='font-medium text-[13px]'>
+              <Label htmlFor='team-name-field' className='font-medium text-[13px]'>
                 Team Name
               </Label>
               <Input
-                id='orgName'
+                id='team-name-field'
                 value={orgName}
                 onChange={onOrgNameChange}
                 placeholder='My Team'
                 className='mt-1'
+                name='team_name_field'
+                autoComplete='off'
+                autoCorrect='off'
+                autoCapitalize='off'
+                data-lpignore='true'
+                data-form-type='other'
               />
             </div>
 
@@ -116,31 +131,52 @@ export function NoOrganizationView({
             </ModalHeader>
 
             <div className='space-y-4'>
+              {/* Hidden decoy field to prevent browser autofill */}
+              <input
+                type='text'
+                name='fakeusernameremembered'
+                autoComplete='username'
+                style={{ position: 'absolute', left: '-9999px', opacity: 0, pointerEvents: 'none' }}
+                tabIndex={-1}
+                readOnly
+              />
               <div>
-                <Label htmlFor='org-name' className='font-medium text-[13px]'>
+                <Label htmlFor='org-name-field' className='font-medium text-[13px]'>
                   Organization Name
                 </Label>
                 <Input
-                  id='org-name'
+                  id='org-name-field'
                   placeholder='Enter organization name'
                   value={orgName}
                   onChange={onOrgNameChange}
                   disabled={isCreatingOrg}
                   className='mt-1'
+                  name='org_name_field'
+                  autoComplete='off'
+                  autoCorrect='off'
+                  autoCapitalize='off'
+                  data-lpignore='true'
+                  data-form-type='other'
                 />
               </div>
 
               <div>
-                <Label htmlFor='org-slug' className='font-medium text-[13px]'>
+                <Label htmlFor='org-slug-field' className='font-medium text-[13px]'>
                   Organization Slug
                 </Label>
                 <Input
-                  id='org-slug'
+                  id='org-slug-field'
                   placeholder='organization-slug'
                   value={orgSlug}
                   onChange={(e) => setOrgSlug(e.target.value)}
                   disabled={isCreatingOrg}
                   className='mt-1'
+                  name='org_slug_field'
+                  autoComplete='off'
+                  autoCorrect='off'
+                  autoCapitalize='off'
+                  data-lpignore='true'
+                  data-form-type='other'
                 />
               </div>
             </div>
diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/template-profile/template-profile.tsx b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/template-profile/template-profile.tsx
index 1b955bbb6..882e59f42 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/template-profile/template-profile.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/template-profile/template-profile.tsx
@@ -390,11 +390,26 @@ export function TemplateProfile() {
                   disabled={isUploadingProfilePicture}
                 />
               </div>
+              {/* Hidden decoy field to prevent browser autofill */}
+              <input
+                type='text'
+                name='fakeusernameremembered'
+                autoComplete='username'
+                style={{ position: 'absolute', left: '-9999px', opacity: 0, pointerEvents: 'none' }}
+                tabIndex={-1}
+                readOnly
+              />
               <Input
                 placeholder='Name'
                 value={formData.name}
                 onChange={(e) => updateField('name', e.target.value)}
                 className='h-9 flex-1'
+                name='profile_display_name'
+                autoComplete='off'
+                autoCorrect='off'
+                autoCapitalize='off'
+                data-lpignore='true'
+                data-form-type='other'
               />
             </div>
             {uploadError && <p className='text-[12px] text-[var(--text-error)]'>{uploadError}</p>}
diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/workflow-list/components/folder-item/folder-item.tsx b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/workflow-list/components/folder-item/folder-item.tsx
index c1a87b63e..f29103dd5 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/workflow-list/components/folder-item/folder-item.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/workflow-list/components/folder-item/folder-item.tsx
@@ -1,6 +1,6 @@
 'use client'
 
-import { useCallback, useState } from 'react'
+import { useCallback, useMemo, useState } from 'react'
 import clsx from 'clsx'
 import { ChevronRight, Folder, FolderOpen } from 'lucide-react'
 import { useParams, useRouter } from 'next/navigation'
@@ -15,7 +15,11 @@ import {
   useItemRename,
 } from '@/app/workspace/[workspaceId]/w/components/sidebar/hooks'
 import { SIDEBAR_SCROLL_EVENT } from '@/app/workspace/[workspaceId]/w/components/sidebar/sidebar'
-import { useDeleteFolder, useDuplicateFolder } from '@/app/workspace/[workspaceId]/w/hooks'
+import {
+  useCanDelete,
+  useDeleteFolder,
+  useDuplicateFolder,
+} from '@/app/workspace/[workspaceId]/w/hooks'
 import { useCreateFolder, useUpdateFolder } from '@/hooks/queries/folders'
 import { useCreateWorkflow } from '@/hooks/queries/workflows'
 import type { FolderTreeNode } from '@/stores/folders/store'
@@ -52,6 +56,9 @@ export function FolderItem({ folder, level, hoverHandlers }: FolderItemProps) {
   const createFolderMutation = useCreateFolder()
   const userPermissions = useUserPermissionsContext()
 
+  const { canDeleteFolder } = useCanDelete({ workspaceId })
+  const canDelete = useMemo(() => canDeleteFolder(folder.id), [canDeleteFolder, folder.id])
+
   // Delete modal state
   const [isDeleteModalOpen, setIsDeleteModalOpen] = useState(false)
 
@@ -316,7 +323,7 @@ export function FolderItem({ folder, level, hoverHandlers }: FolderItemProps) {
         disableCreate={!userPermissions.canEdit || createWorkflowMutation.isPending}
         disableCreateFolder={!userPermissions.canEdit || createFolderMutation.isPending}
         disableDuplicate={!userPermissions.canEdit}
-        disableDelete={!userPermissions.canEdit}
+        disableDelete={!userPermissions.canEdit || !canDelete}
       />
 
       {/* Delete Modal */}
diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/workflow-list/components/workflow-item/workflow-item.tsx b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/workflow-list/components/workflow-item/workflow-item.tsx
index a4018c63d..ceeab77d1 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/workflow-list/components/workflow-item/workflow-item.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/workflow-list/components/workflow-item/workflow-item.tsx
@@ -14,6 +14,7 @@ import {
   useItemRename,
 } from '@/app/workspace/[workspaceId]/w/components/sidebar/hooks'
 import {
+  useCanDelete,
   useDeleteWorkflow,
   useDuplicateWorkflow,
   useExportWorkflow,
@@ -44,10 +45,14 @@ export function WorkflowItem({ workflow, active, level, onWorkflowClick }: Workf
   const userPermissions = useUserPermissionsContext()
   const isSelected = selectedWorkflows.has(workflow.id)
 
+  // Can delete check hook
+  const { canDeleteWorkflows } = useCanDelete({ workspaceId })
+
   // Delete modal state
   const [isDeleteModalOpen, setIsDeleteModalOpen] = useState(false)
   const [workflowIdsToDelete, setWorkflowIdsToDelete] = useState<string[]>([])
   const [deleteModalNames, setDeleteModalNames] = useState<string | string[]>('')
+  const [canDeleteCaptured, setCanDeleteCaptured] = useState(true)
 
   // Presence avatars state
   const [hasAvatars, setHasAvatars] = useState(false)
@@ -172,10 +177,13 @@ export function WorkflowItem({ workflow, active, level, onWorkflowClick }: Workf
         workflowNames: workflowNames.length > 1 ? workflowNames : workflowNames[0],
       }
 
+      // Check if the captured selection can be deleted
+      setCanDeleteCaptured(canDeleteWorkflows(workflowIds))
+
       // If already selected with multiple selections, keep all selections
       handleContextMenuBase(e)
     },
-    [workflow.id, workflows, handleContextMenuBase]
+    [workflow.id, workflows, handleContextMenuBase, canDeleteWorkflows]
   )
 
   // Rename hook
@@ -319,7 +327,7 @@ export function WorkflowItem({ workflow, active, level, onWorkflowClick }: Workf
         disableRename={!userPermissions.canEdit}
         disableDuplicate={!userPermissions.canEdit}
         disableExport={!userPermissions.canEdit}
-        disableDelete={!userPermissions.canEdit}
+        disableDelete={!userPermissions.canEdit || !canDeleteCaptured}
       />
 
       {/* Delete Confirmation Modal */}
diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/workspace-header/components/invite-modal/invite-modal.tsx b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/workspace-header/components/invite-modal/invite-modal.tsx
index a4749cde7..3aaba70b4 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/workspace-header/components/invite-modal/invite-modal.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/workspace-header/components/invite-modal/invite-modal.tsx
@@ -677,16 +677,48 @@ export function InviteModal({ open, onOpenChange, workspaceName }: InviteModalPr
       <ModalContent className='w-[500px]'>
         <ModalHeader>Invite members to {workspaceName || 'Workspace'}</ModalHeader>
 
-        <form ref={formRef} onSubmit={handleSubmit} className='flex min-h-0 flex-1 flex-col'>
+        <form
+          ref={formRef}
+          onSubmit={handleSubmit}
+          className='flex min-h-0 flex-1 flex-col'
+          autoComplete='off'
+        >
           <ModalBody>
             <div className='space-y-[12px]'>
               <div>
                 <Label
-                  htmlFor='emails'
+                  htmlFor='invite-field'
                   className='mb-[6.5px] block pl-[2px] font-medium text-[13px] text-[var(--text-primary)]'
                 >
                   Email Addresses
                 </Label>
+                {/* Hidden decoy fields to prevent browser autofill */}
+                <input
+                  type='text'
+                  name='fakeusernameremembered'
+                  autoComplete='username'
+                  style={{
+                    position: 'absolute',
+                    left: '-9999px',
+                    opacity: 0,
+                    pointerEvents: 'none',
+                  }}
+                  tabIndex={-1}
+                  readOnly
+                />
+                <input
+                  type='email'
+                  name='fakeemailremembered'
+                  autoComplete='email'
+                  style={{
+                    position: 'absolute',
+                    left: '-9999px',
+                    opacity: 0,
+                    pointerEvents: 'none',
+                  }}
+                  tabIndex={-1}
+                  readOnly
+                />
                 <div className='scrollbar-hide flex max-h-32 min-h-9 flex-wrap items-center gap-x-[8px] gap-y-[4px] overflow-y-auto rounded-[4px] border border-[var(--surface-11)] bg-[var(--surface-6)] px-[6px] py-[4px] focus-within:outline-none dark:bg-[var(--surface-9)]'>
                   {invalidEmails.map((email, index) => (
                     <EmailTag
@@ -706,7 +738,8 @@ export function InviteModal({ open, onOpenChange, workspaceName }: InviteModalPr
                     />
                   ))}
                   <Input
-                    id='emails'
+                    id='invite-field'
+                    name='invite_search_field'
                     type='text'
                     value={inputValue}
                     onChange={(e) => setInputValue(e.target.value)}
@@ -726,6 +759,13 @@ export function InviteModal({ open, onOpenChange, workspaceName }: InviteModalPr
                     )}
                     autoFocus={userPerms.canAdmin}
                     disabled={isSubmitting || !userPerms.canAdmin}
+                    autoComplete='off'
+                    autoCorrect='off'
+                    autoCapitalize='off'
+                    spellCheck={false}
+                    data-lpignore='true'
+                    data-form-type='other'
+                    aria-autocomplete='none'
                   />
                 </div>
               </div>
diff --git a/apps/sim/app/workspace/[workspaceId]/w/hooks/index.ts b/apps/sim/app/workspace/[workspaceId]/w/hooks/index.ts
index 5b4c1153a..1ebc8bfbf 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/hooks/index.ts
+++ b/apps/sim/app/workspace/[workspaceId]/w/hooks/index.ts
@@ -1,3 +1,4 @@
+export { useCanDelete } from './use-can-delete'
 export { useDeleteFolder } from './use-delete-folder'
 export { useDeleteWorkflow } from './use-delete-workflow'
 export { useDuplicateFolder } from './use-duplicate-folder'
diff --git a/apps/sim/app/workspace/[workspaceId]/w/hooks/use-can-delete.ts b/apps/sim/app/workspace/[workspaceId]/w/hooks/use-can-delete.ts
new file mode 100644
index 000000000..f206fa90c
--- /dev/null
+++ b/apps/sim/app/workspace/[workspaceId]/w/hooks/use-can-delete.ts
@@ -0,0 +1,130 @@
+import { useCallback, useMemo } from 'react'
+import { useFolderStore } from '@/stores/folders/store'
+import { useWorkflowRegistry } from '@/stores/workflows/registry/store'
+
+interface UseCanDeleteProps {
+  /**
+   * Current workspace ID
+   */
+  workspaceId: string
+}
+
+interface UseCanDeleteReturn {
+  /**
+   * Checks if the given workflow IDs can be deleted.
+   * Returns false if deleting them would leave no workflows in the workspace.
+   */
+  canDeleteWorkflows: (workflowIds: string[]) => boolean
+  /**
+   * Checks if the given folder can be deleted.
+   * Returns false if deleting it would leave no workflows in the workspace.
+   */
+  canDeleteFolder: (folderId: string) => boolean
+  /**
+   * Total number of workflows in the workspace.
+   */
+  totalWorkflows: number
+}
+
+/**
+ * Hook for checking if workflows or folders can be deleted.
+ * Prevents deletion if it would leave the workspace with no workflows.
+ *
+ * Uses pre-computed lookup maps for O(1) access instead of repeated filter() calls.
+ *
+ * @param props - Hook configuration
+ * @returns Functions to check deletion eligibility
+ */
+export function useCanDelete({ workspaceId }: UseCanDeleteProps): UseCanDeleteReturn {
+  const { workflows } = useWorkflowRegistry()
+  const { folders } = useFolderStore()
+
+  /**
+   * Pre-computed data structures for efficient lookups
+   */
+  const { totalWorkflows, workflowIdSet, workflowsByFolderId, childFoldersByParentId } =
+    useMemo(() => {
+      const workspaceWorkflows = Object.values(workflows).filter(
+        (w) => w.workspaceId === workspaceId
+      )
+
+      const idSet = new Set(workspaceWorkflows.map((w) => w.id))
+
+      const byFolderId = new Map<string, number>()
+      for (const w of workspaceWorkflows) {
+        if (w.folderId) {
+          byFolderId.set(w.folderId, (byFolderId.get(w.folderId) || 0) + 1)
+        }
+      }
+
+      const childrenByParent = new Map<string, string[]>()
+      for (const folder of Object.values(folders)) {
+        if (folder.workspaceId === workspaceId && folder.parentId) {
+          const children = childrenByParent.get(folder.parentId) || []
+          children.push(folder.id)
+          childrenByParent.set(folder.parentId, children)
+        }
+      }
+
+      return {
+        totalWorkflows: workspaceWorkflows.length,
+        workflowIdSet: idSet,
+        workflowsByFolderId: byFolderId,
+        childFoldersByParentId: childrenByParent,
+      }
+    }, [workflows, folders, workspaceId])
+
+  /**
+   * Count workflows in a folder and all its subfolders recursively.
+   * Uses pre-computed maps for efficient lookups.
+   */
+  const countWorkflowsInFolder = useCallback(
+    (folderId: string): number => {
+      let count = workflowsByFolderId.get(folderId) || 0
+
+      const childFolders = childFoldersByParentId.get(folderId)
+      if (childFolders) {
+        for (const childId of childFolders) {
+          count += countWorkflowsInFolder(childId)
+        }
+      }
+
+      return count
+    },
+    [workflowsByFolderId, childFoldersByParentId]
+  )
+
+  /**
+   * Check if the given workflow IDs can be deleted.
+   * Returns false if deleting would remove all workflows from the workspace.
+   */
+  const canDeleteWorkflows = useCallback(
+    (workflowIds: string[]): boolean => {
+      const workflowsToDelete = workflowIds.filter((id) => workflowIdSet.has(id)).length
+
+      // Must have at least one workflow remaining after deletion
+      return totalWorkflows > 0 && workflowsToDelete < totalWorkflows
+    },
+    [totalWorkflows, workflowIdSet]
+  )
+
+  /**
+   * Check if the given folder can be deleted.
+   * Empty folders are always deletable. Folders containing all workspace workflows are not.
+   */
+  const canDeleteFolder = useCallback(
+    (folderId: string): boolean => {
+      const workflowsInFolder = countWorkflowsInFolder(folderId)
+
+      if (workflowsInFolder === 0) return true
+      return workflowsInFolder < totalWorkflows
+    },
+    [totalWorkflows, countWorkflowsInFolder]
+  )
+
+  return {
+    canDeleteWorkflows,
+    canDeleteFolder,
+    totalWorkflows,
+  }
+}
diff --git a/apps/sim/components/emcn/components/popover/popover.tsx b/apps/sim/components/emcn/components/popover/popover.tsx
index fce043c39..a01f30c9f 100644
--- a/apps/sim/components/emcn/components/popover/popover.tsx
+++ b/apps/sim/components/emcn/components/popover/popover.tsx
@@ -60,7 +60,7 @@ import { cn } from '@/lib/core/utils/cn'
  * Uses fast transitions (duration-75) to prevent hover state "jumping" during rapid mouse movement.
  */
 const POPOVER_ITEM_BASE_CLASSES =
-  'flex h-[25px] min-w-0 cursor-pointer items-center gap-[8px] rounded-[6px] px-[6px] font-base text-[var(--text-primary)] text-[12px] transition-colors duration-75 dark:text-[var(--text-primary)] [&_svg]:transition-colors [&_svg]:duration-75 disabled:pointer-events-none disabled:opacity-50 disabled:cursor-not-allowed'
+  'flex h-[25px] min-w-0 cursor-pointer items-center gap-[8px] rounded-[6px] px-[6px] font-base text-[var(--text-primary)] text-[12px] transition-colors duration-75 dark:text-[var(--text-primary)] [&_svg]:transition-colors [&_svg]:duration-75'
 
 /**
  * Variant-specific active state styles for popover items.
@@ -425,7 +425,10 @@ export interface PopoverItemProps extends React.HTMLAttributes<HTMLDivElement> {
  * ```
  */
 const PopoverItem = React.forwardRef<HTMLDivElement, PopoverItemProps>(
-  ({ className, active, rootOnly, disabled, showCheck = false, children, ...props }, ref) => {
+  (
+    { className, active, rootOnly, disabled, showCheck = false, children, onClick, ...props },
+    ref
+  ) => {
     // Try to get context - if not available, we're outside Popover (shouldn't happen)
     const context = React.useContext(PopoverContext)
     const variant = context?.variant || 'default'
@@ -435,18 +438,28 @@ const PopoverItem = React.forwardRef<HTMLDivElement, PopoverItemProps>(
       return null
     }
 
+    const handleClick = (e: React.MouseEvent<HTMLDivElement>) => {
+      if (disabled) {
+        e.stopPropagation()
+        return
+      }
+      onClick?.(e)
+    }
+
     return (
       <div
         className={cn(
           POPOVER_ITEM_BASE_CLASSES,
-          active ? POPOVER_ITEM_ACTIVE_CLASSES[variant] : POPOVER_ITEM_HOVER_CLASSES[variant],
-          disabled && 'pointer-events-none cursor-not-allowed opacity-50',
+          !disabled &&
+            (active ? POPOVER_ITEM_ACTIVE_CLASSES[variant] : POPOVER_ITEM_HOVER_CLASSES[variant]),
+          disabled && 'cursor-default opacity-50',
           className
         )}
         ref={ref}
         role='menuitem'
         aria-selected={active}
         aria-disabled={disabled}
+        onClick={handleClick}
         {...props}
       >
         {children}