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/harvest/src/lib/common/index.ts

@@ -0,0 +1,48 @@
+import { DynamicPropsValue } from '@activepieces/pieces-framework';
+import {
+  HttpMethod,
+  HttpMessageBody,
+  HttpResponse,
+  httpClient,
+  AuthenticationType,
+} from '@activepieces/pieces-common';
+
+export async function callHarvestApi<T extends HttpMessageBody = any>(
+  method: HttpMethod,
+  apiUrl: string,
+  accessToken: string,
+  queryParams: any | undefined = undefined,
+  body: any | undefined = undefined,
+  headers: any | undefined = undefined
+): Promise<HttpResponse<T>> {
+  return await httpClient.sendRequest<T>({
+    method: method,
+    url: `https://api.harvestapp.com/v2/${apiUrl}`,
+    authentication: {
+      type: AuthenticationType.BEARER_TOKEN,
+      token: accessToken,
+    },
+    headers,
+    body,
+    queryParams,
+  });
+}
+
+//Remove null/undefined values and create an array to be used for queryparams
+export function filterDynamicFields(dynamicFields: DynamicPropsValue): { [key: string]: string } {
+  const fields: { [key: string]: string } = {};
+
+  const props = Object.entries(dynamicFields);
+  for (const [propertyKey, propertyValue] of props) {
+    if (
+      propertyValue !== null &&
+      propertyValue !== undefined &&
+      propertyValue !== '' &&
+      !(typeof propertyValue === 'string' && propertyValue.trim() === '')
+    ) {
+      fields[propertyKey] = propertyValue;
+    }
+  }
+
+  return fields;
+}