skip session-start pull on dirty working trees

templates/repo/scripts/agent/session-start.sh

@@ -9,7 +9,11 @@ ensure_repo_root
 load_repo_hooks
 
 if git rev-parse --is-inside-work-tree >/dev/null 2>&1 && has_remote; then
-  run_step "Pull latest changes" git pull --rebase
+  if git diff --quiet && git diff --cached --quiet; then
+    run_step "Pull latest changes" git pull --rebase
+  else
+    echo "[agent-framework] Skip pull: working tree has local changes"
+  fi
 fi
 
 if declare -F mosaic_hook_session_start >/dev/null 2>&1; then