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/kissflow/src/lib/actions/download-attachment-from-form-field.ts

@@ -0,0 +1,84 @@
+import {
+  HttpMethod,
+  httpClient,
+  HttpHeaders,
+} from '@activepieces/pieces-common';
+import { createAction, Property } from '@activepieces/pieces-framework';
+
+import contentDisposition from 'content-disposition';
+
+import { kissflowAuth } from '../../auth';
+
+function extractAttachmentNameFromHeaders(
+  headers?: HttpHeaders
+): string | null {
+  let fileName = null;
+
+  const headerValue = headers?.['content-disposition'] as string;
+  if (headerValue) {
+    const parsedValue = contentDisposition.parse(headerValue);
+    if (parsedValue.type === 'attachment') {
+      const parsedFilename = parsedValue.parameters['filename'];
+      if (parsedFilename) {
+        fileName = parsedFilename;
+      }
+    }
+  }
+
+  return fileName;
+}
+
+export const downloadAttachmentFromFormField = createAction({
+  name: 'downloadAttachmentFromFormField',
+  displayName: 'Download Attachment from Form Field',
+  description:
+    'Downloads a specific attachment from a form field of your process.',
+  auth: kissflowAuth,
+  props: {
+    processId: Property.ShortText({
+      displayName: 'Process ID',
+      required: true,
+    }),
+    instanceId: Property.ShortText({
+      displayName: 'Instance ID',
+      required: true,
+    }),
+    activityInstanceId: Property.ShortText({
+      displayName: 'Activity Instance ID',
+      required: true,
+    }),
+    fieldId: Property.ShortText({
+      displayName: 'Field ID',
+      required: true,
+    }),
+    attachmentId: Property.ShortText({
+      displayName: 'Attachment ID',
+      required: true,
+    }),
+  },
+  async run(context) {
+    const auth = context.auth;
+    const { processId, instanceId, activityInstanceId, fieldId, attachmentId } =
+      context.propsValue;
+
+    const requestUrl = `https://${auth.props.accountName}.${auth.props.domainName}/process/2/${auth.props.accountId}/${processId}/${instanceId}/${activityInstanceId}/${fieldId}/attachment/${attachmentId}`;
+    const resp = await httpClient.sendRequest({
+      method: HttpMethod.GET,
+      url: requestUrl,
+      headers: {
+        Accept: 'application/octet-stream',
+        'X-Access-Key-Id': auth.props.accessKeyId,
+        'X-Access-Key-Secret': auth.props.accessKeySecret,
+      },
+      responseType: 'arraybuffer',
+    });
+
+    const fileName =
+      extractAttachmentNameFromHeaders(resp.headers) || 'attachment';
+
+    return await context.files.write({
+      fileName: fileName,
+      data: Buffer.from(resp.body),
+    });
+  },
+});