feat: add project overview section and enhance task item styles

- Introduced a new project overview section in the dashboard, displaying project details, technology stack, architecture, key components, and development history.
- Updated the server logic to include project overview data.
- Enhanced task item styles with status-based background colors for better visual distinction.
- Improved markdown modal functionality for viewing context and implementation plan with normalized line endings.
- Refactored task rendering logic to simplify task item display and improve performance.

ccw/src/core/server.js

@@ -120,6 +120,7 @@ async function getWorkflowData(projectPath) {
       archivedSessions: [],
       liteTasks: { litePlan: [], liteFix: [] },
       reviewData: { dimensions: {} },
+      projectOverview: null,
       statistics: {
         totalSessions: 0,
         activeSessions: 0,
@@ -332,6 +333,7 @@ function generateServerDashboard(initialPath) {
     archivedSessions: [],
     liteTasks: { litePlan: [], liteFix: [] },
     reviewData: { dimensions: {} },
+    projectOverview: null,
     statistics: { totalSessions: 0, activeSessions: 0, totalTasks: 0, completedTasks: 0, reviewFindings: 0, litePlanCount: 0, liteFixCount: 0 }
   };