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/instantly-ai/src/index.ts

@@ -0,0 +1,50 @@
+import { createPiece, PieceAuth } from '@activepieces/pieces-framework';
+import { PieceCategory } from '@activepieces/shared';
+
+import { createCampaignAction } from './lib/actions/create-campaign';
+import { createLeadListAction } from './lib/actions/create-lead-list';
+import { addLeadToCampaignAction } from './lib/actions/add-lead-to-campaign';
+import { searchCampaignsAction } from './lib/actions/search-campaigns';
+import { searchLeadsAction } from './lib/actions/search-leads';
+import { campaignStatusChangedTrigger } from './lib/triggers/campaign-status-changed';
+import { newLeadAddedTrigger } from './lib/triggers/new-lead-added';
+import { createCustomApiCallAction } from '@activepieces/pieces-common';
+import { BASE_URL } from './lib/common/client';
+
+const markdownDescription = `
+You can obtain an API key from **Settings->Integrations->API Keys**.
+`;
+
+export const instantlyAiAuth = PieceAuth.SecretText({
+  displayName: 'API Key',
+  description: markdownDescription,
+  required: true,
+})
+
+export const instantlyAi = createPiece({
+  displayName: 'Instantly.ai',
+  description: 'Powerful cold email outreach and lead engagement platform.',
+  auth: instantlyAiAuth,
+  minimumSupportedRelease: '0.36.1',
+  logoUrl: 'https://cdn.activepieces.com/pieces/instantly-ai.png',
+  categories: [PieceCategory.MARKETING, PieceCategory.SALES_AND_CRM],
+  authors: [],
+  actions: [
+    createCampaignAction,
+    createLeadListAction,
+    addLeadToCampaignAction,
+    searchCampaignsAction,
+    searchLeadsAction,
+    createCustomApiCallAction({
+      auth:instantlyAiAuth,
+      baseUrl:()=>BASE_URL,
+      authMapping: async (auth) => ({
+				Authorization: `Bearer ${auth.secret_text}`,
+			}),
+    })
+  ],
+  triggers: [
+    campaignStatusChangedTrigger,
+    newLeadAddedTrigger,
+  ],
+});