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/auth.ts

@@ -0,0 +1,52 @@
+import { PieceAuth, Property } from '@activepieces/pieces-framework';
+
+export const kissflowAuth = PieceAuth.CustomAuth({
+  description: `
+You can generate your Access Key following these instructions:
+https://community.kissflow.com/t/35h4az8/api-authentication#access-keys
+    `,
+  required: true,
+  props: {
+    accountName: Property.ShortText({
+      displayName: 'Account Name',
+      description: 'Your kissflow account name eg. {account_name}.kissflow.com',
+      required: true,
+    }),
+    accountId: Property.ShortText({
+      displayName: 'Account ID',
+      required: true,
+    }),
+    domainName: Property.StaticDropdown({
+      displayName: 'Domain',
+      options: {
+        options: [
+          {
+            label: 'Default',
+            value: 'kissflow.com',
+          },
+          {
+            label: 'EU',
+            value: 'kissflow.eu',
+          },
+        ],
+      },
+      required: true,
+    }),
+    accessKeyId: Property.ShortText({
+      displayName: 'Access Key ID',
+      required: true,
+    }),
+    accessKeySecret: PieceAuth.SecretText({
+      displayName: 'Access Key Secret',
+      required: true,
+    }),
+  },
+});
+
+export type KissflowAuth = {
+  accountName: string;
+  accountId: string;
+  domainName: string;
+  accessKeyId: string;
+  accessKeySecret: string;
+};