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/clicksend/src/index.ts

@@ -0,0 +1,77 @@
+import {
+  createCustomApiCallAction,
+  HttpMethod,
+} from '@activepieces/pieces-common';
+import { PieceAuth, createPiece } from '@activepieces/pieces-framework';
+import { PieceCategory } from '@activepieces/shared';
+import { clicksendSendSmsAction } from './lib/action/send-sms';
+import { clicksendSendMms } from './lib/action/send-mms';
+import { clicksendCreateContactAction } from './lib/action/create-contact';
+import { clicksendUpdateContactAction } from './lib/action/update-contact';
+import { clicksendDeleteContactAction } from './lib/action/delete-contact';
+import { clicksendCreateContactListAction } from './lib/action/create-contact-list';
+import { clicksendFindContactByEmailAction } from './lib/action/search-contact-by-email';
+import { clicksendFindContactByPhoneAction } from './lib/action/search-contact-by-phone';
+import { clicksendFindContactListAction } from './lib/action/search-contact-lists';
+import { clicksendNewIncomingSms } from './lib/trigger/new-incoming-sms';
+import { callClickSendApi } from './lib/common';
+
+export const clicksendAuth = PieceAuth.BasicAuth({
+  description: `You can get your API credentials by clicking 'API Credentials' on the top right of the dashboard.`,
+  required: true,
+  username: {
+    displayName: 'Username',
+    description: 'Your ClickSend username',
+  },
+  password: {
+    displayName: 'API Key',
+    description: 'Your ClickSend API key',
+  },
+  validate: async ({ auth }) => {
+    try {
+      await callClickSendApi({
+        method: HttpMethod.GET,
+        path: '/account',
+        username: auth.username,
+        password: auth.password,
+      });
+      return { valid: true };
+    } catch {
+      return { valid: false, error: 'Invalid Credentials.' };
+    }
+  },
+});
+
+export const clicksend = createPiece({
+  displayName: 'ClickSend SMS',
+  description:
+    'Cloud-based messaging platform for sending SMS, MMS, voice, email, and more.',
+  minimumSupportedRelease: '0.36.1',
+  logoUrl: 'https://cdn.activepieces.com/pieces/clicksend.png',
+  auth: clicksendAuth,
+  categories: [PieceCategory.COMMUNICATION],
+  actions: [
+    clicksendSendSmsAction,
+    clicksendSendMms,
+    clicksendCreateContactAction,
+    clicksendUpdateContactAction,
+    clicksendDeleteContactAction,
+    clicksendCreateContactListAction,
+    clicksendFindContactByEmailAction,
+    clicksendFindContactByPhoneAction,
+    clicksendFindContactListAction,
+    createCustomApiCallAction({
+      baseUrl: () => 'https://rest.clicksend.com/v3',
+      auth: clicksendAuth,
+      authMapping: async (auth) => ({
+        Authorization: `Basic ${Buffer.from(
+          `${(auth as { username: string }).username}:${
+            (auth as { password: string }).password
+          }`
+        ).toString('base64')}`,
+      }),
+    }),
+  ],
+  authors: ['sparkybug'],
+  triggers: [clicksendNewIncomingSms],
+});