Add Activepieces integration for workflow automation

- Add Activepieces fork with SmoothSchedule custom piece
- Create integrations app with Activepieces service layer
- Add embed token endpoint for iframe integration
- Create Automations page with embedded workflow builder
- Add sidebar visibility fix for embed mode
- Add list inactive customers endpoint to Public API
- Include SmoothSchedule triggers: event created/updated/cancelled
- Include SmoothSchedule actions: create/update/cancel events, list resources/services/customers

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

activepieces-fork/packages/react-ui/src/components/custom/alert-icon.tsx

@@ -0,0 +1,31 @@
+import { cn } from '@/lib/utils';
+
+export const InvalidStepIcon = ({ className }: { className: string }) => {
+  return (
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      className={cn(
+        'stroke-1 dark:stroke-amber-900 stroke-amber-500 ',
+        className,
+      )}
+      viewBox="0 0 16 16"
+      fill="none"
+      stroke="currentColor"
+      strokeWidth="2"
+      strokeLinecap="round"
+      strokeLinejoin="round"
+    >
+      <circle
+        cx="8.08325"
+        cy="8.26868"
+        r="7.5"
+        className="dark:fill-amber-950 fill-amber-50 "
+      ></circle>
+      <path
+        d="M8.08325 3.69368C7.86445 3.69368 7.65461 3.7806 7.49989 3.93531C7.34517 4.09003 7.25825 4.29987 7.25825 4.51868V8.51868C7.25825 8.73748 7.34517 8.94732 7.49989 9.10204C7.65461 9.25676 7.86445 9.34368 8.08325 9.34368C8.30206 9.34368 8.5119 9.25676 8.66662 9.10204C8.82133 8.94732 8.90825 8.73748 8.90825 8.51868V4.51868C8.90825 4.29987 8.82133 4.09003 8.66662 3.93531C8.5119 3.7806 8.30206 3.69368 8.08325 3.69368ZM8.90825 12.0187C8.90825 11.563 8.53889 11.1937 8.08325 11.1937C7.62762 11.1937 7.25825 11.563 7.25825 12.0187C7.25825 12.4743 7.62762 12.8437 8.08325 12.8437C8.53889 12.8437 8.90825 12.4743 8.90825 12.0187Z"
+        className="dark:fill-amber-600 fill-amber-700"
+        strokeWidth="0.4"
+      ></path>
+    </svg>
+  );
+};