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/prompthub/src/index.ts

@@ -0,0 +1,60 @@
+import {
+  AuthenticationType,
+  HttpMethod,
+  createCustomApiCallAction,
+  httpClient,
+} from '@activepieces/pieces-common';
+import { PieceAuth, createPiece } from '@activepieces/pieces-framework';
+import { listProjects } from './lib/actions/list-projects';
+import { getProjectHead } from './lib/actions/get-project-head';
+import { runPrompt } from './lib/actions/run-prompt';
+
+export const prompthubAuth = PieceAuth.SecretText({
+  displayName: 'API Key',
+  description: 'PromptHub API token',
+  required: true,
+  validate: async (auth) => {
+    try {
+      await httpClient.sendRequest({
+        url: 'https://app.prompthub.us/api/v1/me',
+        method: HttpMethod.GET,
+        authentication: {
+          type: AuthenticationType.BEARER_TOKEN,
+          token: auth.auth as string,
+        },
+        timeout: 10000,
+      });
+      return { valid: true };
+    } catch (e) {
+      return {
+        valid: false,
+        error: 'Invalid API key or insufficient permissions',
+      };
+    }
+  },
+});
+
+export const prompthub = createPiece({
+  displayName: 'PromptHub',
+  description:
+    'Integrate with PromptHub projects, retrieve heads, and run prompts.',
+  auth: prompthubAuth,
+  minimumSupportedRelease: '0.63.0',
+  logoUrl: 'https://cdn.activepieces.com/pieces/prompthub.png',
+  authors: ['sparkybug'],
+  actions: [
+    listProjects,
+    getProjectHead,
+    runPrompt,
+    createCustomApiCallAction({
+      auth: prompthubAuth,
+      baseUrl: () => 'https://app.prompthub.us/api/v1',
+      authMapping: async (auth) => {
+        return {
+          authorization: `Bearer ${auth.secret_text}`,
+        };
+      },
+    }),
+  ],
+  triggers: [],
+});