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/assembled/test-endpoints.md

@@ -0,0 +1,35 @@
+# Assembled API Test Endpoints
+
+## GET Requests (no body needed)
+- `/users` - List all users
+- `/teams` - List teams
+- `/queues` - List queues
+- `/time-off-requests` - List time off requests
+- `/users/{user_id}` - Get specific user
+- `/users/{user_id}/schedule` - Get user's schedule
+
+## POST Requests (need body)
+- `/time-off-requests` - Create time off request
+  ```json
+  {
+    "user_id": "user123",
+    "start_date": "2024-01-15",
+    "end_date": "2024-01-16",
+    "reason": "Vacation"
+  }
+  ```
+
+- `/users/{user_id}/shifts` - Add shift
+  ```json
+  {
+    "start_time": "2024-01-15T09:00:00Z",
+    "end_time": "2024-01-15T17:00:00Z",
+    "shift_type": "regular"
+  }
+  ```
+
+## Testing Steps
+1. Start with simple GET requests to `/users` or `/teams`
+2. Use your Assembled API key in the auth field
+3. Check the response to verify connectivity
+4. Try POST requests with sample data