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/todoist/src/index.ts

@@ -0,0 +1,39 @@
+import { createCustomApiCallAction } from '@activepieces/pieces-common';
+import { OAuth2PropertyValue, PieceAuth, createPiece } from '@activepieces/pieces-framework';
+import { PieceCategory } from '@activepieces/shared';
+import { todoistCreateTaskAction } from './lib/actions/create-task-action';
+import { todoistTaskCompletedTrigger } from './lib/triggers/task-completed-trigger';
+import { todoistUpdateTaskAction } from './lib/actions/update-task.action';
+import { todoistFindTaskAction } from './lib/actions/find-task.action';
+import { todoistMarkTaskCompletedAction } from './lib/actions/mark-task-completed.action';
+
+export const todoistAuth = PieceAuth.OAuth2({
+	required: true,
+	authUrl: 'https://todoist.com/oauth/authorize',
+	tokenUrl: 'https://todoist.com/oauth/access_token',
+	scope: ['data:read_write'],
+});
+
+export const todoist = createPiece({
+	displayName: 'Todoist',
+	description: 'To-do list and task manager',
+	minimumSupportedRelease: '0.5.0',
+	logoUrl: 'https://cdn.activepieces.com/pieces/todoist.png',
+	authors: ['MyWay', 'kishanprmr', 'MoShizzle', 'khaledmashaly', 'abuaboud'],
+	categories: [PieceCategory.PRODUCTIVITY],
+	auth: todoistAuth,
+	actions: [
+		todoistCreateTaskAction,
+		todoistUpdateTaskAction,
+		todoistFindTaskAction,
+		todoistMarkTaskCompletedAction,
+		createCustomApiCallAction({
+			baseUrl: () => 'https://api.todoist.com/rest/v2',
+			auth: todoistAuth,
+			authMapping: async (auth) => ({
+				Authorization: `Bearer ${auth.access_token}`,
+			}),
+		}),
+	],
+	triggers: [todoistTaskCompletedTrigger],
+});