Auto-reload script via exec when git pull fetches updates

deploy_script.sh

@@ -198,6 +198,8 @@ handle_age_key() {
 ###############################################################################
 update_repo() {
     log "Updating repository..."
+    local reexec_needed=false
+
     if [[ ! -d "${REPO_DIR}/.git" ]]; then
         log "No .git directory found — cloning repository..."
         local tmp_dir
@@ -208,12 +210,32 @@ update_repo() {
         rm -rf "${tmp_dir}"
         cd "${REPO_DIR}"
         git checkout -- . 2>/dev/null || true
+        reexec_needed=true
     else
         cd "${REPO_DIR}"
+        local old_commit
+        old_commit=$(git rev-parse HEAD 2>/dev/null || echo "old")
         git fetch origin
         git reset --hard origin/main || git reset --hard origin/master || true
+        local new_commit
+        new_commit=$(git rev-parse HEAD 2>/dev/null || echo "new")
+        
+        if [[ "${old_commit}" != "${new_commit}" ]]; then
+            log "Update detected! (${old_commit:0:7} -> ${new_commit:0:7})"
+            reexec_needed=true
+        fi
     fi
     chmod 700 "${REPO_DIR}/deploy_script.sh" 2>/dev/null || true
+
+    if [[ "${reexec_needed}" == "true" ]]; then
+        if [[ -z "${PAPERCLIP_REEXEC:-}" ]]; then
+            log "Re-executing updated script..."
+            export PAPERCLIP_REEXEC=1
+            exec bash "$0" "$@"
+        else
+            warn "Re-exec already attempted. Continuing to avoid infinite loop."
+        fi
+    fi
 }
 
 ###############################################################################
@@ -383,7 +405,11 @@ main() {
 
     trap on_deploy_failure ERR
 
-    notify "PaperClip Deploy Start" "Deploy-Skript gestartet. System wird überprüft..." "default" "gear"
+    if [[ -z "${PAPERCLIP_REEXEC:-}" ]]; then
+        notify "PaperClip Deploy Start" "Deploy-Skript gestartet. System wird überprüft..." "default" "gear"
+    else
+        notify "PaperClip Deploy Neustart" "Skript hat sich selbst geupdatet und führt sich nun aus." "default" "arrows_counterclockwise"
+    fi
 
     install_packages
     configure_system