feat: implement pipeline feature for automated workflow steps

- Introduced a new pipeline service to manage custom workflow steps that execute after a feature is marked "In Progress".
- Added API endpoints for configuring, saving, adding, updating, deleting, and reordering pipeline steps.
- Enhanced the UI to support pipeline settings, including a dialog for managing steps and integration with the Kanban board.
- Updated the application state management to handle pipeline configurations per project.
- Implemented dynamic column generation in the Kanban board to display pipeline steps between "In Progress" and "Waiting Approval".
- Added documentation for the new pipeline feature, including usage instructions and configuration details.

This feature allows for a more structured workflow, enabling automated processes such as code reviews and testing after feature implementation.

apps/server/src/routes/pipeline/common.ts

@@ -0,0 +1,21 @@
+/**
+ * Common utilities for pipeline routes
+ *
+ * Provides logger and error handling utilities shared across all pipeline endpoints.
+ */
+
+import { createLogger } from '@automaker/utils';
+import { getErrorMessage as getErrorMessageShared, createLogError } from '../common.js';
+
+/** Logger instance for pipeline-related operations */
+export const logger = createLogger('Pipeline');
+
+/**
+ * Extract user-friendly error message from error objects
+ */
+export { getErrorMessageShared as getErrorMessage };
+
+/**
+ * Log error with automatic logger binding
+ */
+export const logError = createLogError(logger);