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/connections/src/lib/actions/read-connection.ts

@@ -0,0 +1,39 @@
+import { Property, createAction } from '@activepieces/pieces-framework';
+import { isNil } from '@activepieces/shared';
+
+const markdown = `
+**Advanced Piece**
+<br>
+Use this piece if you are unsure which connection to use beforehand, such as when the connection external ID is sent through a webhook message.
+
+**Notes:**
+- You can retrieve the external ID from the connection settings page by hovering over the connection name.
+- Use this action to retrieve connection values by their external IDs from this project.
+- After testing the step, you can use the dynamic value in the piece by clicking (X) and referring to this step.
+`;
+
+export const readConnection = createAction({
+  name: 'read_connection',
+  displayName: 'Read Connection',
+  description: 'Fetch connection by name',
+  props: {
+    info: Property.MarkDown({
+      value: markdown,
+    }),
+    connection_name: Property.ShortText({
+      displayName: 'Connection External ID',
+      description: undefined,
+      required: true,
+    }),
+  },
+  async run(ctx) {
+    const connection = await ctx.connections.get(ctx.propsValue.connection_name);
+    if (isNil(connection)) {
+      throw new Error(JSON.stringify({
+        message: 'Connection not found',
+        connectionName: ctx.propsValue.connection_name,
+      }));
+    }
+    return connection;
+  },
+});