Fix upstream versions to enable patches to always apply

setup_upstream.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+#
+# setup_upstream.sh — fetch the upstream sources agv_pro_ros2 depends on
+# and apply any required patches.
+#
+# Sources are declared in upstream.jazzy.repos and cloned under src/upstream/.
+# Patches in patches/ are applied idempotently (already-applied patches are
+# silently skipped).
+#
+# Usage:
+#   ./setup_upstream.sh
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$REPO_ROOT"
+
+echo "[setup_upstream] importing sources into src/upstream ..."
+mkdir -p src/upstream
+
+# Reset working-tree changes in already-cloned repos so that vcs import can
+# pull upstream updates without hitting dirty-working-tree conflicts.
+# Use -x so that gitignored files (e.g. generated package.xml) are also removed.
+# Patches are re-applied unconditionally after the import step below.
+for repo_dir in src/upstream/*/; do
+    if [[ -d "${repo_dir}/.git" ]]; then
+        git -C "${repo_dir}" checkout -- . 2>/dev/null || true
+        git -C "${repo_dir}" clean -fdx 2>/dev/null || true
+    fi
+done
+
+vcs import src/upstream < upstream.jazzy.repos
+
+echo "[setup_upstream] applying patches ..."
+bash patches/apply_patches.sh
+
+echo "[setup_upstream] done."