feat: implement manual SDK session sync and fix UI crash

.gitignore

@@ -41,7 +41,7 @@ install.log
 # ===================== OS Generated Files ===============
 Thumbs.db
 ehthumbs.db
-Desktop.ini
+44: Desktop.ini
 
 # ===================== Temporary Files ==================
 *.tmp
@@ -100,4 +100,14 @@ packages/server/dist/
 # ===================== Backup Files =====================
 *.backup
 *_backup*
-_backup_original/
+_backup_original/
+
+# ===================== NomadArch Specific Data ============
+.codenomad-data/
+**/logs/
+**/.codenomad-data/
+sdk-sync-debug.log
+**/sessions.json
+**/messages.json
+**/workspaces.json
+*.json.bak