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/pieces/community/webhook/src/index.ts

@@ -0,0 +1,17 @@
+import { createPiece, PieceAuth } from '@activepieces/pieces-framework';
+import { catchWebhook } from './lib/triggers/catch-hook';
+import { PieceCategory } from '@activepieces/shared';
+import { returnResponse } from './lib/actions/return-response';
+import { returnResponseAndWaitForNextWebhook } from './lib/actions/return-response-and-wait-for-next-webhook';
+
+export const webhook = createPiece({
+  displayName: 'Webhook',
+  description: 'Receive HTTP requests and trigger flows using unique URLs.',
+  auth: PieceAuth.None(),
+  categories: [PieceCategory.CORE],
+  minimumSupportedRelease: '0.52.0',
+  logoUrl: 'https://cdn.activepieces.com/pieces/webhook.svg',
+  authors: ['abuaboud', 'pfernandez98', 'kishanprmr','AbdulTheActivePiecer'],
+  actions: [returnResponse,returnResponseAndWaitForNextWebhook],
+  triggers: [catchWebhook],
+});