feat: group sidebar sessions by project

server.js

@@ -1460,12 +1460,15 @@ function sendSessionList(ws) {
     for (const f of files) {
       try {
         const s = normalizeSession(JSON.parse(fs.readFileSync(path.join(SESSIONS_DIR, f), 'utf8')));
+        const cwd = s.cwd || '';
         sessions.push({
           id: s.id,
           title: s.title || 'Untitled',
           updated: s.updated,
           hasUnread: !!s.hasUnread,
           agent: getSessionAgent(s),
+          cwd,
+          projectName: cwd ? path.basename(cwd.replace(/[\\/]+$/, '')) : '',
           isRunning: activeProcesses.has(s.id),
         });
       } catch {}