fix(web/ui): resolve padding and dialog layout issues from audit

- Remove conflicting .dialog/.dialog-body rules from utilities.css
- Fix live-session sidebar alignment and padding
- Wrap ProjectDialog, RepositoryCreateDialog, WorkspacesPage modals in .dialog-header/.dialog-body
- Migrate SessionsPage dirty-delete modal from .modal-* to .dialog-*
- Add padding to .project-card
- Fix session-card-actions border token (var(--border))
- Remove duplicate .dialog-actions rule in global.css
- Add pb-20 bottom clearance to ConfigProfile/ToolType editor scroll containers
- Add .card-md padding to ErrorState

apps/web/src/components/data-states.tsx

@@ -14,7 +14,7 @@ interface ErrorStateProps {
 }
 
 export const ErrorState = ({ message = "Failed to load", onRetry }: ErrorStateProps) => (
-  <div className="card stack">
+  <div className="card card-md stack">
     <p>{message}</p>
     {onRetry && (
       <button className="secondary-button" onClick={onRetry} type="button">