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/index.ts

@@ -50,6 +50,8 @@ import { createGitHubRoutes } from './routes/github/index.js';
 import { createContextRoutes } from './routes/context/index.js';
 import { createBacklogPlanRoutes } from './routes/backlog-plan/index.js';
 import { cleanupStaleValidations } from './routes/github/routes/validation-common.js';
+import { createPipelineRoutes } from './routes/pipeline/index.js';
+import { pipelineService } from './services/pipeline-service.js';
 
 // Load environment variables
 dotenv.config();
@@ -162,6 +164,7 @@ app.use('/api/claude', createClaudeRoutes(claudeUsageService));
 app.use('/api/github', createGitHubRoutes(events, settingsService));
 app.use('/api/context', createContextRoutes(settingsService));
 app.use('/api/backlog-plan', createBacklogPlanRoutes(events, settingsService));
+app.use('/api/pipeline', createPipelineRoutes(pipelineService));
 
 // Create HTTP server
 const server = createServer(app);