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/square/src/index.ts

@@ -0,0 +1,58 @@
+import { PieceAuth, createPiece } from '@activepieces/pieces-framework';
+import { PieceCategory } from '@activepieces/shared';
+import crypto from 'crypto';
+import { triggers } from './lib/triggers';
+
+export const squareAuth = PieceAuth.OAuth2({
+  description: 'Authentication',
+  authUrl: 'https://connect.squareup.com/oauth2/authorize',
+  tokenUrl: 'https://connect.squareup.com/oauth2/token',
+  required: true,
+  scope: [
+    'MERCHANT_PROFILE_READ',
+    'CUSTOMERS_READ',
+    'CUSTOMERS_WRITE',
+    'ITEMS_READ',
+    'ITEMS_WRITE',
+    'ORDERS_READ',
+    'ORDERS_WRITE',
+    'PAYMENTS_READ',
+    'INVOICES_READ',
+    'APPOINTMENTS_READ',
+    'APPOINTMENTS_WRITE',
+  ],
+});
+
+export const square = createPiece({
+  displayName: 'Square',
+  description: 'Payment solutions for every business',
+
+  minimumSupportedRelease: '0.30.0',
+  logoUrl: 'https://cdn.activepieces.com/pieces/square.png',
+  categories: [PieceCategory.COMMERCE],
+  authors: ["kishanprmr","MoShizzle","khaledmashaly","abuaboud"],
+  auth: squareAuth,
+  events: {
+    verify: ({ webhookSecret, payload, appWebhookUrl }) => {
+      const signature = payload.headers['x-square-hmacsha256-signature'];
+      const hmac = crypto.createHmac('sha256', webhookSecret as string);
+      hmac.update(appWebhookUrl + payload.rawBody);
+      const hash = hmac.digest('base64');
+      return hash === signature;
+    },
+    parseAndReply: ({ payload }) => {
+      const payloadBody = payload.body as Payload | undefined;
+      return {
+        event: payloadBody?.type,
+        identifierValue: payloadBody?.merchant_id,
+      };
+    },
+  },
+  actions: [],
+  triggers,
+});
+
+type Payload = {
+  type: string;
+  merchant_id: string;
+};