switch to /usr/local

Enhances `check_container_os_guard` to support a persistent opt-out for OS version mismatch checks. The prompt now uses a 3-option whiptail menu (cancel, continue once, continue and remember), and stores ignored targets in `/root/.helper-scripts-ignoreOSupdate` so users are re-prompted when a newer recommended OS appears. Messaging was also tightened to explicitly warn that bypassing may break updates and is unsupported.

CHANGELOG.md

@@ -505,14 +505,26 @@ Exercise vigilance regarding copycat or coat-tailing sites that seek to exploit
 
 </details>
 
+## 2026-07-21
+
+### 🚀 Updated Scripts
+
+  - #### ✨ New Features
+
+    - Pangolin: Bump Version to 1.21.0 [@MickLesk](https://github.com/MickLesk) ([#15938](https://github.com/community-scripts/ProxmoxVE/pull/15938))
+
+  - #### 🔧 Refactor
+
+    - Standardize CT update backup handling [@MickLesk](https://github.com/MickLesk) ([#15937](https://github.com/community-scripts/ProxmoxVE/pull/15937))
+
 ## 2026-07-20
 
 ### 🚀 Updated Scripts
 
   - #### 🐞 Bug Fixes
 
-    - fix: vikunja: asset selection [@CrazyWolf13](https://github.com/CrazyWolf13) ([#15929](https://github.com/community-scripts/ProxmoxVE/pull/15929))
     - RomM: use backup helpers in update / clear folder [@MickLesk](https://github.com/MickLesk) ([#15915](https://github.com/community-scripts/ProxmoxVE/pull/15915))
+    - fix: vikunja: asset selection [@CrazyWolf13](https://github.com/CrazyWolf13) ([#15929](https://github.com/community-scripts/ProxmoxVE/pull/15929))
     - Zammad : bind Elasticsearch to 127.0.0.1 [@MickLesk](https://github.com/MickLesk) ([#15909](https://github.com/community-scripts/ProxmoxVE/pull/15909))
     - Omada: fix package version extraction [@MickLesk](https://github.com/MickLesk) ([#15908](https://github.com/community-scripts/ProxmoxVE/pull/15908))
     - fix(wanderer): use PocketBase-relative plugin symlink in unprivileged LXC [@michelroegl-brunner](https://github.com/michelroegl-brunner) ([#15911](https://github.com/community-scripts/ProxmoxVE/pull/15911))
@@ -529,6 +541,7 @@ Exercise vigilance regarding copycat or coat-tailing sites that seek to exploit
 
   - #### ✨ New Features
 
+    - core: refactor to single-reporter telemetry and better error_handling [@MickLesk](https://github.com/MickLesk) ([#15933](https://github.com/community-scripts/ProxmoxVE/pull/15933))
     - tools.func: add support for extracting 7z archives [@MickLesk](https://github.com/MickLesk) ([#15919](https://github.com/community-scripts/ProxmoxVE/pull/15919))
     - Meilisearch : use dumpless Meilisearch upgrades [@MickLesk](https://github.com/MickLesk) ([#15921](https://github.com/community-scripts/ProxmoxVE/pull/15921))
 

ct/affine.sh

@@ -42,8 +42,6 @@ function update_script() {
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "affine_app" "toeverything/AFFiNE" "tarball" "${RELEASE}" "/opt/affine"
 
-    # Restore BEFORE the build: CLEAN_INSTALL wiped /opt/affine including .env,
-    # and the build below sources it
     restore_backup
 
     if [[ ! -f /opt/affine/.env ]]; then

ct/alpine-cinny.sh

@@ -30,16 +30,11 @@ function update_script() {
   fi
 
   if check_for_gh_release "cinny" "cinnyapp/cinny"; then
-    msg_info "Backing up Configuration"
-    cp /opt/cinny/config.json /opt/cinny_config.json.bak
-    msg_ok "Backed up Configuration"
+    create_backup /opt/cinny/config.json
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "cinny" "cinnyapp/cinny" "prebuild" "latest" "/opt/cinny" "cinny-*.tar.gz"
 
-    msg_info "Restoring Configuration"
-    cp /opt/cinny_config.json.bak /opt/cinny/config.json
-    rm -f /opt/cinny_config.json.bak
-    msg_ok "Restored Configuration"
+    restore_backup
 
     msg_info "Restarting nginx"
     $STD rc-service nginx restart

ct/dispatcharr.sh

@@ -116,21 +116,10 @@ EOF
 
     msg_info "Creating Backup"
     BACKUP_FILE="/opt/dispatcharr_backup_$(date +%F_%H-%M-%S).tar.gz"
-    if [[ -f /opt/dispatcharr/.env ]]; then
-      cp /opt/dispatcharr/.env /tmp/dispatcharr.env.backup
-    fi
     if [[ -f /opt/dispatcharr/start-gunicorn.sh ]]; then
       rm -f /opt/dispatcharr/start-gunicorn.sh
     fi
-    if [[ -f /opt/dispatcharr/start-celery.sh ]]; then
-      cp /opt/dispatcharr/start-celery.sh /tmp/start-celery.sh.backup
-    fi
-    if [[ -f /opt/dispatcharr/start-celerybeat.sh ]]; then
-      cp /opt/dispatcharr/start-celerybeat.sh /tmp/start-celerybeat.sh.backup
-    fi
-    if [[ -f /opt/dispatcharr/start-daphne.sh ]]; then
-      cp /opt/dispatcharr/start-daphne.sh /tmp/start-daphne.sh.backup
-    fi
+    create_backup /opt/dispatcharr/.env /opt/dispatcharr/start-celery.sh /opt/dispatcharr/start-celerybeat.sh /opt/dispatcharr/start-daphne.sh
     if [[ -f /opt/dispatcharr/.env ]]; then
       set -o allexport
       source /opt/dispatcharr/.env
@@ -145,20 +134,9 @@ EOF
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "dispatcharr" "Dispatcharr/Dispatcharr" "tarball"
 
-    msg_info "Updating Dispatcharr Backend"
-    if [[ -f /tmp/dispatcharr.env.backup ]]; then
-      mv /tmp/dispatcharr.env.backup /opt/dispatcharr/.env
-    fi
-    if [[ -f /tmp/start-celery.sh.backup ]]; then
-      mv /tmp/start-celery.sh.backup /opt/dispatcharr/start-celery.sh
-    fi
-    if [[ -f /tmp/start-celerybeat.sh.backup ]]; then
-      mv /tmp/start-celerybeat.sh.backup /opt/dispatcharr/start-celerybeat.sh
-    fi
-    if [[ -f /tmp/start-daphne.sh.backup ]]; then
-      mv /tmp/start-daphne.sh.backup /opt/dispatcharr/start-daphne.sh
-    fi
+    restore_backup
 
+    msg_info "Updating Dispatcharr Backend"
     if ! grep -q "DJANGO_SECRET_KEY" /opt/dispatcharr/.env; then
       DJANGO_SECRET=$(openssl rand -base64 48 | tr -dc 'a-zA-Z0-9' | cut -c1-50)
       echo "DJANGO_SECRET_KEY=$DJANGO_SECRET" >>/opt/dispatcharr/.env

ct/fladder.sh

@@ -35,21 +35,11 @@ function update_script() {
     systemctl stop nginx
     msg_ok "Stopped Service"
 
-    if [[ -f /opt/fladder/assets/config/config.json ]]; then
-      msg_info "Backing up configuration"
-      cp /opt/fladder/assets/config/config.json /tmp/fladder_config.json.bak
-      msg_ok "Configuration backed up"
-    fi
+    create_backup /opt/fladder/assets/config/config.json
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "Fladder" "DonutWare/Fladder" "prebuild" "latest" "/opt/fladder" "Fladder-Web-*.zip"
 
-    if [[ -f /tmp/fladder_config.json.bak ]]; then
-      msg_info "Restoring configuration"
-      mkdir -p /opt/fladder/assets/config
-      cp /tmp/fladder_config.json.bak /opt/fladder/assets/config/config.json
-      rm -f /tmp/fladder_config.json.bak
-      msg_ok "Configuration restored"
-    fi
+    restore_backup
 
     msg_info "Starting Service"
     systemctl start nginx

ct/flatnotes.sh

@@ -34,12 +34,11 @@ function update_script() {
     systemctl stop flatnotes
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Configuration and Data"
-    cp /opt/flatnotes/.env /opt/flatnotes.env
-    cp -r /opt/flatnotes/data /opt/flatnotes_data_backup
-    msg_ok "Backed up Configuration and Data"
+    create_backup /opt/flatnotes/.env /opt/flatnotes/data
 
-    fetch_and_deploy_gh_release "flatnotes" "dullage/flatnotes" "tarball"
+    CLEAN_INSTALL=1 fetch_and_deploy_gh_release "flatnotes" "dullage/flatnotes" "tarball"
+
+    restore_backup
 
     msg_info "Updating Flatnotes"
     cd /opt/flatnotes/client
@@ -52,13 +51,6 @@ function update_script() {
     $STD /usr/local/bin/uv sync
     msg_ok "Updated Flatnotes"
 
-    msg_info "Restoring Configuration and Data"
-    cp /opt/flatnotes.env /opt/flatnotes/.env
-    cp -r /opt/flatnotes_data_backup/. /opt/flatnotes/data
-    rm -f /opt/flatnotes.env
-    rm -r /opt/flatnotes_data_backup
-    msg_ok "Restored Configuration and Data"
-
     msg_info "Starting Service"
     systemctl start flatnotes
     msg_ok "Started Service"

ct/fluid-calendar.sh

@@ -38,9 +38,9 @@ function update_script() {
     systemctl stop fluid-calendar
     msg_info "Stopped Service"
 
-    cp /opt/fluid-calendar/.env /opt/fluid.env
+    create_backup /opt/fluid-calendar/.env
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "fluid-calendar" "dotnetfactory/fluid-calendar" "tarball"
-    mv /opt/fluid.env /opt/fluid-calendar/.env
+    restore_backup
 
     msg_info "Updating Fluid Calendar"
     cd /opt/fluid-calendar

ct/ghostfolio.sh

@@ -41,13 +41,15 @@ function update_script() {
       --exclude="ghostfolio/node_modules" \
       --exclude="ghostfolio/dist" \
       ghostfolio
-    mv /opt/ghostfolio/.env /opt/env.backup
     msg_ok "Backup Created"
 
+    create_backup /opt/ghostfolio/.env
+
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "ghostfolio" "ghostfolio/ghostfolio" "tarball" "latest" "/opt/ghostfolio"
 
+    restore_backup
+
     msg_info "Updating Ghostfolio"
-    mv /opt/env.backup /opt/ghostfolio/.env
     sed -i -E '/^DATABASE_URL=/ s/[?&]sslmode=prefer//g' /opt/ghostfolio/.env
     cd /opt/ghostfolio
     $STD npm ci

ct/gogs.sh

@@ -35,18 +35,11 @@ function update_script() {
     systemctl stop gogs
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Data"
-    cp -r /opt/gogs/custom /opt/gogs_custom_backup
-    cp -r /opt/gogs/data /opt/gogs_data_backup
-    msg_ok "Backed up Data"
+    create_backup /opt/gogs/custom /opt/gogs/data
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "gogs" "gogs/gogs" "prebuild" "latest" "/opt/gogs" "gogs_*_linux_$(arch_resolve).tar.gz"
 
-    msg_info "Restoring Data"
-    cp -r /opt/gogs_custom_backup/. /opt/gogs/custom
-    cp -r /opt/gogs_data_backup/. /opt/gogs/data
-    rm -rf /opt/gogs_custom_backup /opt/gogs_data_backup
-    msg_ok "Restored Data"
+    restore_backup
 
     msg_info "Starting Service"
     systemctl start gogs

ct/grist.sh

@@ -37,21 +37,14 @@ function update_script() {
     systemctl stop grist
     msg_ok "Stopped Service"
 
-    msg_info "Creating backup"
-    rm -rf /opt/grist_bak
-    mv /opt/grist /opt/grist_bak
-    msg_ok "Backup created"
+    create_backup /opt/grist/.env /opt/grist/docs /opt/grist/grist-sessions.db /opt/grist/landing.db
 
-    fetch_and_deploy_gh_release "grist" "gristlabs/grist-core" "tarball"
+    CLEAN_INSTALL=1 fetch_and_deploy_gh_release "grist" "gristlabs/grist-core" "tarball"
+
+    restore_backup
 
     msg_info "Updating Grist"
     mkdir -p /opt/grist/docs
-    cp -n /opt/grist_bak/.env /opt/grist/.env
-    if ls /opt/grist_bak/docs/* &>/dev/null; then
-      cp -r /opt/grist_bak/docs/* /opt/grist/docs/
-    fi
-    [[ -f /opt/grist_bak/grist-sessions.db ]] && cp /opt/grist_bak/grist-sessions.db /opt/grist/grist-sessions.db
-    [[ -f /opt/grist_bak/landing.db ]] && cp /opt/grist_bak/landing.db /opt/grist/landing.db
     cd /opt/grist
     $STD yarn install
     $STD yarn run build:prod

ct/homebox.sh

@@ -39,8 +39,12 @@ function update_script() {
     systemctl stop homebox
     msg_ok "Stopped Service"
 
+    create_backup /opt/homebox/.env /opt/homebox/.data
+
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "homebox" "sysadminsmedia/homebox" "prebuild" "latest" "/opt/homebox" "homebox_Linux_$(arch_resolve "x86_64" "arm64").tar.gz"
     chmod +x /opt/homebox/homebox
+
+    restore_backup
     [ -f /opt/.env ] && mv /opt/.env /opt/homebox/.env
     [ -d /opt/.data ] && mv /opt/.data /opt/homebox/.data
 

ct/homelable.sh

@@ -35,16 +35,12 @@ function update_script() {
     systemctl stop homelable
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Configuration and Data"
-    cp /opt/homelable/backend/.env /opt/homelable.env.bak
-    cp -r /opt/homelable/data /opt/homelable_data_bak
-    if [[ -f /opt/homelable/mcp/.env ]]; then
-      cp -a /opt/homelable/mcp/.env /opt/homelable-mcp.env.bak
-    fi
-    msg_ok "Backed up Configuration and Data"
+    create_backup /opt/homelable/backend/.env /opt/homelable/data /opt/homelable/mcp/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "homelable" "Pouzor/homelable" "tarball" "latest" "/opt/homelable"
 
+    restore_backup
+
     msg_info "Updating Python Dependencies"
     cd /opt/homelable/backend
     $STD uv venv --clear /opt/homelable/backend/.venv
@@ -57,17 +53,8 @@ function update_script() {
     $STD npm run build
     msg_ok "Rebuilt Frontend"
 
-    msg_info "Restoring Configuration and Data"
-    cp /opt/homelable.env.bak /opt/homelable/backend/.env
-    cp -r /opt/homelable_data_bak/. /opt/homelable/data/
-    rm -f /opt/homelable.env.bak
-    rm -rf /opt/homelable_data_bak
-    msg_ok "Restored Configuration and Data"
-
-    if [[ -f /opt/homelable-mcp.env.bak ]]; then
+    if [[ -f /opt/homelable/mcp/.env ]]; then
       msg_info "Restoring MCP Server"
-      cp -a /opt/homelable-mcp.env.bak /opt/homelable/mcp/.env
-      rm -f /opt/homelable-mcp.env.bak
       MCP_OWNER=$(stat -c '%U' /opt/homelable/mcp/.env)
       cd /opt/homelable/mcp
       $STD uv venv --clear /opt/homelable/mcp/.venv

ct/homepage.sh

@@ -37,20 +37,12 @@ function update_script() {
     systemctl stop homepage
     msg_ok "Stopped service"
 
-    msg_info "Creating Backup"
-    cp /opt/homepage/.env /opt/homepage.env
-    cp -r /opt/homepage/config /opt/homepage_config_backup
-    [[ -d /opt/homepage/public/images ]] && cp -r /opt/homepage/public/images /opt/homepage_images_backup
-    [[ -d /opt/homepage/public/icons ]] && cp -r /opt/homepage/public/icons /opt/homepage_icons_backup
-    msg_ok "Created Backup"
+    create_backup /opt/homepage/.env /opt/homepage/config
+    BACKUP_DIR=/opt/homepage-assets.backup create_backup /opt/homepage/public/images /opt/homepage/public/icons
     
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "homepage" "gethomepage/homepage" "tarball"
     
-    msg_info "Restoring Backup"
-    mv /opt/homepage.env /opt/homepage
-    rm -rf /opt/homepage/config
-    mv /opt/homepage_config_backup /opt/homepage/config
-    msg_ok "Restored Backup"
+    restore_backup
 
     msg_info "Updating Homepage (Patience)"
     RELEASE=$(get_latest_github_release "gethomepage/homepage")
@@ -63,8 +55,7 @@ function update_script() {
     export NEXT_PUBLIC_BUILDTIME=$(curl -fsSL https://api.github.com/repos/gethomepage/homepage/releases/latest | jq -r '.published_at')
     export NEXT_TELEMETRY_DISABLED=1
     $STD pnpm build
-    [[ -d /opt/homepage_images_backup ]] && mv /opt/homepage_images_backup /opt/homepage/public/images
-    [[ -d /opt/homepage_icons_backup ]] && mv /opt/homepage_icons_backup /opt/homepage/public/icons
+    BACKUP_DIR=/opt/homepage-assets.backup restore_backup
     msg_ok "Updated Homepage"
 
     msg_info "Starting service"

ct/hoodik.sh

@@ -36,16 +36,11 @@ function update_script() {
     systemctl stop hoodik
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Configuration"
-    cp /opt/hoodik/.env /opt/hoodik.env.bak
-    msg_ok "Backed up Configuration"
+    create_backup /opt/hoodik/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "hoodik" "hudikhq/hoodik" "prebuild" "latest" "/opt/hoodik" "*$(arch_resolve "x86_64" "arm64").tar.gz"
 
-    msg_info "Restoring Configuration"
-    cp /opt/hoodik.env.bak /opt/hoodik/.env
-    rm -f /opt/hoodik.env.bak
-    msg_ok "Restored Configuration"
+    restore_backup
 
     msg_info "Starting Service"
     systemctl start hoodik

ct/igotify.sh

@@ -35,16 +35,11 @@ function update_script() {
     systemctl stop igotify
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Configuration"
-    cp /opt/igotify/.env /opt/igotify.env.bak
-    msg_ok "Backed up Configuration"
+    create_backup /opt/igotify/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "igotify" "androidseb25/iGotify-Notification-Assistent" "prebuild" "latest" "/opt/igotify" "iGotify-Notification-Service-$(arch_resolve)-v*.zip"
 
-    msg_info "Restoring Configuration"
-    cp /opt/igotify.env.bak /opt/igotify/.env
-    rm -f /opt/igotify.env.bak
-    msg_ok "Restored Configuration"
+    restore_backup
 
     msg_info "Starting Service"
     systemctl start igotify

ct/immichframe.sh

@@ -35,9 +35,7 @@ function update_script() {
     systemctl stop immichframe
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Configuration"
-    cp -r /opt/immichframe/Config /tmp/immichframe_config.bak
-    msg_ok "Backed up Configuration"
+    create_backup /opt/immichframe/Config
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "immichframe" "immichFrame/ImmichFrame" "tarball" "latest" "/tmp/immichframe"
 
@@ -57,11 +55,8 @@ function update_script() {
     rm -rf /tmp/immichframe
     msg_ok "Setup ImmichFrame"
 
-    msg_info "Restoring Configuration"
-    cp -r /tmp/immichframe_config.bak/* /opt/immichframe/Config/
-    rm -rf /tmp/immichframe_config.bak
+    restore_backup
     chown -R immichframe:immichframe /opt/immichframe
-    msg_ok "Restored Configuration"
 
 
     msg_info "Starting Service"

ct/investbrain.sh

@@ -41,20 +41,14 @@ function update_script() {
     NODE_VERSION="22" setup_nodejs
     PG_VERSION="17" setup_postgresql
 
-    msg_info "Creating Backup"
-    rm -f /opt/.env.backup
-    rm -rf /opt/investbrain_backup
-    cp /opt/investbrain/.env /opt/.env.backup
-    cp -r /opt/investbrain/storage /opt/investbrain_backup
-    msg_ok "Created Backup"
+    create_backup /opt/investbrain/.env /opt/investbrain/storage
 
-    fetch_and_deploy_gh_release "Investbrain" "investbrainapp/investbrain" "tarball" "latest" "/opt/investbrain"
+    CLEAN_INSTALL=1 fetch_and_deploy_gh_release "Investbrain" "investbrainapp/investbrain" "tarball" "latest" "/opt/investbrain"
+
+    restore_backup
 
     msg_info "Updating Investbrain"
     cd /opt/investbrain
-    rm -rf /opt/investbrain/storage
-    cp /opt/.env.backup /opt/investbrain/.env
-    cp -r /opt/investbrain_backup/ /opt/investbrain/storage
     export COMPOSER_ALLOW_SUPERUSER=1
     $STD /usr/local/bin/composer install --no-interaction --no-dev --optimize-autoloader
     $STD npm install
@@ -69,7 +63,6 @@ function update_script() {
     $STD php artisan event:cache
     chown -R www-data:www-data /opt/investbrain
     chmod -R 775 /opt/investbrain/storage /opt/investbrain/bootstrap/cache
-    rm -rf /opt/.env.backup /opt/investbrain_backup
     msg_ok "Updated Investbrain"
 
     msg_info "Starting Services"

ct/invoiceninja.sh

@@ -35,21 +35,11 @@ function update_script() {
     systemctl stop supervisor nginx php8.4-fpm
     msg_ok "Stopped Services"
 
-    msg_info "Creating Backup"
-    mkdir -p /tmp/invoiceninja_backup
-    cp /opt/invoiceninja/.env /tmp/invoiceninja_backup/
-    cp -r /opt/invoiceninja/storage /tmp/invoiceninja_backup/ 2>/dev/null || true
-    cp -r /opt/invoiceninja/public/storage /tmp/invoiceninja_backup/public_storage 2>/dev/null || true
-    msg_ok "Created Backup"
+    create_backup /opt/invoiceninja/.env /opt/invoiceninja/storage /opt/invoiceninja/public/storage
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "invoiceninja" "invoiceninja/invoiceninja" "prebuild" "latest" "/opt/invoiceninja" "invoiceninja.tar.gz"
 
-    msg_info "Restoring Data"
-    cp /tmp/invoiceninja_backup/.env /opt/invoiceninja/
-    cp -r /tmp/invoiceninja_backup/storage/* /opt/invoiceninja/storage/ 2>/dev/null || true
-    cp -r /tmp/invoiceninja_backup/public_storage/* /opt/invoiceninja/public/storage/ 2>/dev/null || true
-    rm -rf /tmp/invoiceninja_backup
-    msg_ok "Restored Data"
+    restore_backup
 
     msg_info "Running Migrations"
     cd /opt/invoiceninja 

ct/invoiceshelf.sh

@@ -35,19 +35,11 @@ function update_script() {
     systemctl stop caddy
     msg_ok "Stopped Services"
 
-    msg_info "Backing up Data"
-    cp /opt/invoiceshelf/.env /opt/invoiceshelf.env.bak
-    cp -r /opt/invoiceshelf/storage /opt/invoiceshelf_storage_backup
-    msg_ok "Backed up Data"
+    create_backup /opt/invoiceshelf/.env /opt/invoiceshelf/storage
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "invoiceshelf" "InvoiceShelf/InvoiceShelf" "tarball"
 
-    msg_info "Restoring Data"
-    cp /opt/invoiceshelf.env.bak /opt/invoiceshelf/.env
-    rm -f /opt/invoiceshelf.env.bak
-    cp -r /opt/invoiceshelf_storage_backup/. /opt/invoiceshelf/storage
-    rm -rf /opt/invoiceshelf_storage_backup
-    msg_ok "Restored Data"
+    restore_backup
 
     msg_info "Updating Application"
     cd /opt/invoiceshelf

ct/joplin-server.sh

@@ -36,9 +36,9 @@ function update_script() {
     systemctl stop joplin-server
     msg_ok "Stopped Services"
 
-    cp /opt/joplin-server/.env /opt
+    create_backup /opt/joplin-server/.env
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "joplin-server" "laurent22/joplin" "tarball"
-    mv /opt/.env /opt/joplin-server
+    restore_backup
 
     msg_info "Updating Joplin-Server"
     cd /opt/joplin-server

ct/jotty.sh

@@ -35,20 +35,12 @@ function update_script() {
     systemctl stop jotty
     msg_ok "Stopped Service"
 
-    msg_info "Backing up configuration & data"
-    cp /opt/jotty/.env /opt/app.env
-    [[ -d /opt/jotty/data ]] && mv /opt/jotty/data /opt/data
-    [[ -d /opt/jotty/config ]] && mv /opt/jotty/config /opt/config
-    msg_ok "Backed up configuration & data"
+    create_backup /opt/jotty/.env /opt/jotty/data /opt/jotty/config
 
     NODE_VERSION="22" NODE_MODULE="yarn" setup_nodejs
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "jotty" "fccview/jotty" "prebuild" "latest" "/opt/jotty" "jotty_*_prebuild.tar.gz"
 
-    msg_info "Restoring configuration & data"
-    mv /opt/app.env /opt/jotty/.env
-    [[ -d /opt/data ]] && mv /opt/data /opt/jotty/data
-    [[ -d /opt/config ]] && cp -a /opt/config/* /opt/jotty/config && rm -rf /opt/config
-    msg_ok "Restored configuration & data"
+    restore_backup
 
     msg_info "Starting Service"
     systemctl start jotty

ct/kan.sh

@@ -35,16 +35,11 @@ function update_script() {
     systemctl stop kan
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Data"
-    cp /opt/kan/.env /opt/kan.env.bak
-    msg_ok "Backed up Data"
+    create_backup /opt/kan/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_tag "kan" "kanbn/kan" "latest"
 
-    msg_info "Restoring Configuration"
-    cp /opt/kan.env.bak /opt/kan/.env
-    rm -f /opt/kan.env.bak
-    msg_ok "Restored Configuration"
+    restore_backup
 
     msg_info "Building Application"
     cd /opt/kan

ct/kima-hub.sh

@@ -37,18 +37,11 @@ function update_script() {
     systemctl stop kima-frontend kima-backend kima-analyzer kima-analyzer-clap
     msg_ok "Stopped Services"
 
-    msg_info "Backing up Data"
-    cp /opt/kima-hub/backend/.env /opt/kima-hub-backend-env.bak
-    cp /opt/kima-hub/frontend/.env /opt/kima-hub-frontend-env.bak
-    msg_ok "Backed up Data"
+    create_backup /opt/kima-hub/backend/.env /opt/kima-hub/frontend/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "kima-hub" "Chevron7Locked/kima-hub" "tarball"
 
-    msg_info "Restoring Data"
-    cp /opt/kima-hub-backend-env.bak /opt/kima-hub/backend/.env
-    cp /opt/kima-hub-frontend-env.bak /opt/kima-hub/frontend/.env
-    rm -f /opt/kima-hub-backend-env.bak /opt/kima-hub-frontend-env.bak
-    msg_ok "Restored Data"
+    restore_backup
 
     msg_info "Rebuilding Backend"
     cd /opt/kima-hub/backend

ct/kitchenowl.sh

@@ -35,22 +35,14 @@ function update_script() {
     systemctl stop kitchenowl
     msg_ok "Stopped Service"
 
-    msg_info "Creating Backup"
-    mkdir -p /opt/kitchenowl_backup
-    cp -r /opt/kitchenowl/data /opt/kitchenowl_backup/
-    cp -f /opt/kitchenowl/kitchenowl.env /opt/kitchenowl_backup/
-    msg_ok "Created Backup"
+    create_backup /opt/kitchenowl/data /opt/kitchenowl/kitchenowl.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "kitchenowl" "TomBursch/kitchenowl" "tarball" "latest" "/opt/kitchenowl"
     rm -rf /opt/kitchenowl/web
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "kitchenowl-web" "TomBursch/kitchenowl" "prebuild" "latest" "/opt/kitchenowl/web" "kitchenowl_Web.tar.gz"
 
-    msg_info "Restoring data"
+    restore_backup
     sed -i 's/default=True/default=False/' /opt/kitchenowl/backend/wsgi.py
-    cp -r /opt/kitchenowl_backup/data /opt/kitchenowl/
-    cp -f /opt/kitchenowl_backup/kitchenowl.env /opt/kitchenowl/
-    rm -rf /opt/kitchenowl_backup
-    msg_ok "Restored data"
 
     msg_info "Updating KitchenOwl"
     cd /opt/kitchenowl/backend

ct/koel.sh

@@ -35,21 +35,11 @@ function update_script() {
     systemctl stop nginx php8.4-fpm
     msg_ok "Stopped Services"
 
-    msg_info "Creating Backup"
-    mkdir -p /tmp/koel_backup
-    cp /opt/koel/.env /tmp/koel_backup/
-    cp -r /opt/koel/storage /tmp/koel_backup/ 2>/dev/null || true
-    cp -r /opt/koel/public/img /tmp/koel_backup/ 2>/dev/null || true
-    msg_ok "Created Backup"
+    create_backup /opt/koel/.env /opt/koel/storage /opt/koel/public/img
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "koel" "koel/koel" "prebuild" "latest" "/opt/koel" "koel-*.tar.gz"
 
-    msg_info "Restoring Data"
-    cp /tmp/koel_backup/.env /opt/koel/
-    cp -r /tmp/koel_backup/storage/* /opt/koel/storage/ 2>/dev/null || true
-    cp -r /tmp/koel_backup/img/* /opt/koel/public/img/ 2>/dev/null || true
-    rm -rf /tmp/koel_backup
-    msg_ok "Restored Data"
+    restore_backup
 
     msg_info "Running Migrations"
     cd /opt/koel 

ct/leantime.sh

@@ -34,20 +34,18 @@ function update_script() {
     msg_info "Creating Backup"
     mariadb-dump leantime >"/opt/leantime_db_backup_$(date +%F).sql"
     tar -czf "/opt/leantime_backup_$(date +%F).tar.gz" "/opt/leantime"
-    mv /opt/leantime /opt/leantime_bak
     msg_ok "Backup Created"
 
-    fetch_and_deploy_gh_release "leantime" "Leantime/leantime" "prebuild" "latest" "/opt/leantime" Leantime*.tar.gz
+    create_backup /opt/leantime/config/.env
 
-    msg_info "Restoring Config & Permissions"
-    mv /opt/leantime_bak/config/.env /opt/leantime/config/.env
+    CLEAN_INSTALL=1 fetch_and_deploy_gh_release "leantime" "Leantime/leantime" "prebuild" "latest" "/opt/leantime" Leantime*.tar.gz
+
+    restore_backup
+
+    msg_info "Setting Permissions"
     chown -R www-data:www-data "/opt/leantime"
     chmod -R 750 "/opt/leantime"
-    msg_ok "Restored Config & Permissions"
-
-    msg_info "Removing Backup"
-    rm -rf /opt/leantime_bak
-    msg_ok "Removed Backup"
+    msg_ok "Set Permissions"
     msg_ok "Updated successfully!"
   fi
   exit

ct/librechat.sh

@@ -35,12 +35,12 @@ function update_script() {
     systemctl stop librechat rag-api
     msg_ok "Stopped Services"
 
-    msg_info "Backing up Configuration"
-    cp /opt/librechat/.env /opt/librechat.env.bak
-    msg_ok "Backed up Configuration"
+    create_backup /opt/librechat/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_tag "librechat" "danny-avila/LibreChat"
 
+    restore_backup
+
     msg_info "Installing Dependencies"
     cd /opt/librechat
     $STD npm ci
@@ -52,11 +52,6 @@ function update_script() {
     $STD npm cache clean --force
     msg_ok "Built Frontend"
 
-    msg_info "Restoring Configuration"
-    cp /opt/librechat.env.bak /opt/librechat/.env
-    rm -f /opt/librechat.env.bak
-    msg_ok "Restored Configuration"
-
     msg_info "Starting Services"
     systemctl start rag-api librechat
     msg_ok "Started Services"
@@ -68,22 +63,17 @@ function update_script() {
     systemctl stop rag-api
     msg_ok "Stopped RAG API"
 
-    msg_info "Backing up RAG API Configuration"
-    cp /opt/rag-api/.env /opt/rag-api.env.bak
-    msg_ok "Backed up RAG API Configuration"
+    create_backup /opt/rag-api/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "rag-api" "danny-avila/rag_api" "tarball"
 
+    restore_backup
+
     msg_info "Updating RAG API Dependencies"
     cd /opt/rag-api
     $STD .venv/bin/pip install -r requirements.lite.txt
     msg_ok "Updated RAG API Dependencies"
 
-    msg_info "Restoring RAG API Configuration"
-    cp /opt/rag-api.env.bak /opt/rag-api/.env
-    rm -f /opt/rag-api.env.bak
-    msg_ok "Restored RAG API Configuration"
-
     msg_info "Starting RAG API"
     systemctl start rag-api
     msg_ok "Started RAG API"

ct/linkding.sh

@@ -35,19 +35,12 @@ function update_script() {
     systemctl stop nginx linkding linkding-tasks
     msg_ok "Stopped Services"
 
-    msg_info "Backing up Data"
-    cp -r /opt/linkding/data /opt/linkding_data_backup
-    cp /opt/linkding/.env /opt/linkding_env_backup
-    msg_ok "Backed up Data"
+    create_backup /opt/linkding/data /opt/linkding/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "linkding" "sissbruecker/linkding" "tarball"
 
-    msg_info "Restoring Data"
-    cp -r /opt/linkding_data_backup/. /opt/linkding/data
-    cp /opt/linkding_env_backup /opt/linkding/.env
-    rm -rf /opt/linkding_data_backup /opt/linkding_env_backup
+    restore_backup
     ln -sf /usr/lib/$(arch_resolve "x86_64-linux-gnu" "aarch64-linux-gnu")/mod_icu.so /opt/linkding/libicu.so
-    msg_ok "Restored Data"
 
     msg_info "Updating LinkDing"
     cd /opt/linkding

ct/linkwarden.sh

@@ -35,13 +35,11 @@ function update_script() {
 
     RUST_CRATES="monolith" setup_rust
 
-    msg_info "Backing up data"
-    mv /opt/linkwarden/.env /opt/.env
-    [ -d /opt/linkwarden/data ] && mv /opt/linkwarden/data /opt/data.bak
-    rm -rf /opt/linkwarden
-    msg_ok "Backed up data"
+    create_backup /opt/linkwarden/.env /opt/linkwarden/data
 
-    fetch_and_deploy_gh_release "linkwarden" "linkwarden/linkwarden" "tarball"
+    CLEAN_INSTALL=1 fetch_and_deploy_gh_release "linkwarden" "linkwarden/linkwarden" "tarball"
+
+    restore_backup
 
     msg_info "Updating Linkwarden"
     cd /opt/linkwarden
@@ -60,11 +58,9 @@ function update_script() {
     $STD yarn
     $STD npx playwright install-deps
     $STD npx playwright install
-    mv /opt/.env /opt/linkwarden/.env
     $STD yarn prisma:generate
     $STD yarn web:build
     $STD yarn prisma:deploy
-    [ -d /opt/data.bak ] && mv /opt/data.bak /opt/linkwarden/data
     rm -rf ~/.cargo/registry ~/.cargo/git ~/.cargo/.package-cache
     rm -rf /root/.cache/yarn
     rm -rf /opt/linkwarden/.next/cache

ct/lobehub.sh

@@ -35,16 +35,11 @@ function update_script() {
     systemctl stop lobehub
     msg_ok "Stopped Services"
 
-    msg_info "Backing up Data"
-    cp /opt/lobehub/.env /opt/lobehub.env.bak
-    msg_ok "Backed up Data"
+    create_backup /opt/lobehub/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "lobehub" "lobehub/lobehub" "tarball"
 
-    msg_info "Restoring Configuration"
-    cp /opt/lobehub.env.bak /opt/lobehub/.env
-    rm -f /opt/lobehub.env.bak
-    msg_ok "Restored Configuration"
+    restore_backup
 
     msg_info "Building Application"
     cd /opt/lobehub

ct/mail-archiver.sh

@@ -36,10 +36,7 @@ function update_script() {
     systemctl stop mail-archiver
     msg_ok "Stopped Mail-Archiver"
 
-    msg_info "Creating Backup"
-    cp /opt/mail-archiver/appsettings.json /opt/mail-archiver/.env /opt/
-    [[ -d /opt/mail-archiver/DataProtection-Keys ]] && cp -r /opt/mail-archiver/DataProtection-Keys /opt
-    msg_ok "Created Backup"
+    create_backup /opt/mail-archiver/appsettings.json /opt/mail-archiver/.env /opt/mail-archiver/DataProtection-Keys
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "mail-archiver" "s1t5/mail-archiver" "tarball"
 
@@ -51,10 +48,7 @@ function update_script() {
     rm -rf /opt/mail-archiver-build
     msg_ok "Updated Mail-Archiver"
 
-    msg_info "Restoring Backup"
-    cp /opt/appsettings.json /opt/.env /opt/mail-archiver
-    [[ -d /opt/DataProtection-Keys ]] && cp -r /opt/DataProtection-Keys /opt/mail-archiver/
-    msg_ok "Restored Backup"
+    restore_backup
 
     msg_info "Starting Mail-Archiver"
     systemctl start mail-archiver

ct/manyfold.sh

@@ -39,13 +39,15 @@ function update_script() {
 
     msg_info "Backing up Data"
     CURRENT_VERSION=$(grep -oP 'APP_VERSION=\K[^ ]+' /opt/manyfold/.env || echo "unknown")
-    cp -r /opt/manyfold/app/storage /opt/manyfold_storage_backup 2>/dev/null || true
-    cp -r /opt/manyfold/app/tmp /opt/manyfold_tmp_backup 2>/dev/null || true
     $STD tar -czf "/opt/manyfold_${CURRENT_VERSION}_backup.tar.gz" -C /opt/manyfold app
     msg_ok "Backed up Data"
 
+    create_backup /opt/manyfold/app/storage /opt/manyfold/app/tmp
+
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "manyfold" "manyfold3d/manyfold" "tarball" "latest" "/opt/manyfold/app"
 
+    restore_backup
+
     msg_info "Configuring Manyfold"
     RUBY_INSTALL_VERSION=$(cat /opt/manyfold/app/.ruby-version)
     YARN_VERSION=$(grep '"packageManager":' /opt/manyfold/app/package.json | sed -E 's/.*"(yarn@[0-9\.]+)".*/\1/')
@@ -55,14 +57,9 @@ function update_script() {
 
     RUBY_VERSION=${RUBY_INSTALL_VERSION} RUBY_INSTALL_RAILS="true" HOME=/home/manyfold setup_ruby
 
-    msg_info "Restoring Data"
-    rm -rf /opt/manyfold/app/{storage,tmp}
-    cp -r /opt/manyfold_storage_backup /opt/manyfold/app/storage 2>/dev/null || true
-    cp -r /opt/manyfold_tmp_backup /opt/manyfold/app/tmp 2>/dev/null || true
+    msg_info "Setting Permissions"
     chown -R manyfold:manyfold {/home/manyfold,/opt/manyfold}
-    chown -R manyfold:manyfold /opt/manyfold/app/storage /opt/manyfold/app/tmp /opt/manyfold/app/config
-    rm -rf /opt/manyfold_storage_backup /opt/manyfold_tmp_backup
-    msg_ok "Restored Data"
+    msg_ok "Set Permissions"
 
     msg_info "Installing Manyfold"
 

ct/matomo.sh

@@ -35,11 +35,7 @@ function update_script() {
     systemctl stop caddy
     msg_ok "Stopped Services"
 
-    msg_info "Backing up Data"
-    [[ -f /opt/matomo/config/config.ini.php ]] && cp /opt/matomo/config/config.ini.php /opt/matomo_config.bak
-    [[ -d /opt/matomo/misc/user ]] && cp -r /opt/matomo/misc/user /opt/matomo_user_backup
-    [[ -f /root/matomo.creds ]] && cp /root/matomo.creds /opt/matomo_db_creds.bak
-    msg_ok "Backed up Data"
+    create_backup /opt/matomo/config/config.ini.php /opt/matomo/misc/user /root/matomo.creds
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "matomo" "matomo-org/matomo" "prebuild" "latest" "/opt/matomo" "matomo-*.zip"
 
@@ -53,20 +49,8 @@ function update_script() {
     chmod -R 755 /opt/matomo/tmp
     msg_ok "Set up Matomo"
 
-    msg_info "Restoring Data"
-    if [[ -f /opt/matomo_config.bak ]]; then
-      mkdir -p /opt/matomo/config
-      cp /opt/matomo_config.bak /opt/matomo/config/config.ini.php
-    fi
-    if [[ -d /opt/matomo_user_backup ]]; then
-      mkdir -p /opt/matomo/misc/user
-      cp -r /opt/matomo_user_backup/. /opt/matomo/misc/user
-    fi
-    [[ -f /opt/matomo_db_creds.bak ]] && cp /opt/matomo_db_creds.bak /root/matomo.creds
-    rm -f /opt/matomo_config.bak /opt/matomo_db_creds.bak
-    rm -rf /opt/matomo_user_backup
+    restore_backup
     chown -R www-data:www-data /opt/matomo
-    msg_ok "Restored Data"
 
     if [[ -f /opt/matomo/console ]]; then
       msg_info "Running Matomo database upgrade"

ct/meilisearch.sh

@@ -33,14 +33,13 @@ function update_script() {
       systemctl stop meilisearch-ui
       msg_ok "Stopped Meilisearch-UI"
 
-      cp /opt/meilisearch-ui/.env.local /tmp/.env.local.bak
-      rm -rf /opt/meilisearch-ui
-      fetch_and_deploy_gh_release "meilisearch-ui" "riccox/meilisearch-ui" "tarball"
+      create_backup /opt/meilisearch-ui/.env.local
+      CLEAN_INSTALL=1 fetch_and_deploy_gh_release "meilisearch-ui" "riccox/meilisearch-ui" "tarball"
+      restore_backup
 
       msg_info "Configuring Meilisearch-UI"
       cd /opt/meilisearch-ui
       sed -i 's|const hash = execSync("git rev-parse HEAD").toString().trim();|const hash = "unknown";|' /opt/meilisearch-ui/vite.config.ts
-      mv /tmp/.env.local.bak /opt/meilisearch-ui/.env.local
       $STD pnpm install
       msg_ok "Configured Meilisearch-UI"
 

ct/metube.sh

@@ -48,14 +48,11 @@ function update_script() {
     systemctl stop metube
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Old Installation"
-    if [[ -d /opt/metube_bak ]]; then
-      rm -rf /opt/metube_bak
-    fi
-    mv /opt/metube /opt/metube_bak
-    msg_ok "Backup created"
+    create_backup /opt/metube/.env
 
-    fetch_and_deploy_gh_release "metube" "alexta69/metube" "tarball" "latest"
+    CLEAN_INSTALL=1 fetch_and_deploy_gh_release "metube" "alexta69/metube" "tarball" "latest"
+
+    restore_backup
 
     msg_info "Building Frontend"
     cd /opt/metube/ui
@@ -75,13 +72,6 @@ function update_script() {
     $STD uv sync
     msg_ok "Installed Backend"
 
-    msg_info "Restoring .env"
-    if [[ -f /opt/metube_bak/.env ]]; then
-      cp /opt/metube_bak/.env /opt/metube/.env
-    fi
-    rm -rf /opt/metube_bak
-    msg_ok "Restored .env"
-
     if grep -q 'pipenv' /etc/systemd/system/metube.service; then
       msg_info "Patching systemd Service"
       cat <<EOF >/etc/systemd/system/metube.service

ct/nametag.sh

@@ -35,15 +35,11 @@ function update_script() {
     systemctl stop nametag
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Data"
-    cp /opt/nametag/.env /opt/nametag.env.bak
-    cp -r /opt/nametag/data /opt/nametag_data_bak
-    msg_ok "Backed up Data"
+    create_backup /opt/nametag/.env /opt/nametag/data
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "nametag" "mattogodoy/nametag" "tarball" "latest" "/opt/nametag"
 
-    # Restore .env BEFORE the build: CLEAN_INSTALL wiped it and the build sources it
-    cp /opt/nametag.env.bak /opt/nametag/.env
+    restore_backup
 
     msg_info "Rebuilding Application"
     cd /opt/nametag
@@ -57,13 +53,6 @@ function update_script() {
     cp -r /opt/nametag/public /opt/nametag/.next/standalone/public
     msg_ok "Rebuilt Application"
 
-    msg_info "Restoring Data"
-    cp /opt/nametag.env.bak /opt/nametag/.env
-    cp -r /opt/nametag_data_bak/. /opt/nametag/data/
-    rm -f /opt/nametag.env.bak
-    rm -rf /opt/nametag_data_bak
-    msg_ok "Restored Data"
-
     msg_info "Running Migrations"
     cd /opt/nametag
     $STD npx prisma migrate deploy

ct/overseerr.sh

@@ -61,18 +61,16 @@ EOF
     systemctl stop overseerr
     msg_ok "Service stopped"
 
-    msg_info "Creating backup"
-    mv /opt/overseerr/config /opt/config_backup
-    msg_ok "Backup created"
+    create_backup /opt/overseerr/config
 
     fetch_and_deploy_gh_release "overseerr" "sct/overseerr" "tarball"
-    rm -rf /opt/overseerr/config
+
+    restore_backup
 
     msg_info "Configuring ${APP} (Patience)"
     cd /opt/overseerr
     $STD yarn install
     $STD yarn build
-    mv /opt/config_backup /opt/overseerr/config
     msg_ok "Configured ${APP}"
 
     msg_info "Starting Service"

ct/ownfoil.sh

@@ -35,23 +35,18 @@ function update_script() {
     systemctl stop ownfoil
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Data"
-    cp -r /opt/ownfoil/app/config /opt/ownfoil_data_backup
-    msg_ok "Backed up Data"
+    create_backup /opt/ownfoil/app/config
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "ownfoil" "a1ex4/ownfoil" "tarball"
 
+    restore_backup
+
     msg_info "Installing Dependencies"
     cd /opt/ownfoil
     $STD source .venv/bin/activate
     $STD uv pip install -r requirements.txt
     msg_ok "Installed Dependencies"
 
-    msg_info "Restoring Data"
-    cp -r /opt/ownfoil_data_backup /opt/ownfoil/app/config
-    rm -rf /opt/ownfoil_data_backup
-    msg_ok "Restored Data"
-
     msg_info "Starting Service"
     systemctl start ownfoil
     msg_ok "Started Service"

ct/pangolin.sh

@@ -6,7 +6,7 @@ source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxV
 # Source: https://pangolin.net/ | Github: https://github.com/fosrl/pangolin
 
 APP="Pangolin"
-PANGOLIN_VERSION="${PANGOLIN_VERSION:-1.20.0}"
+PANGOLIN_VERSION="${PANGOLIN_VERSION:-1.21.0}"
 var_tags="${var_tags:-proxy}"
 var_cpu="${var_cpu:-2}"
 var_ram="${var_ram:-4096}"

ct/paperclip.sh

@@ -35,15 +35,11 @@ function update_script() {
     systemctl stop paperclip
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Configuration"
-    cp /opt/paperclip-ai/.env /opt/paperclip.env.bak
-    msg_ok "Backed up Configuration"
+    create_backup /opt/paperclip-ai/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "paperclip-ai" "paperclipai/paperclip" "tarball"
 
-    msg_info "Restoring Configuration"
-    mv /opt/paperclip.env.bak /opt/paperclip-ai/.env
-    msg_ok "Restored Configuration"
+    restore_backup
 
     msg_info "Rebuilding Paperclip"
     cd /opt/paperclip-ai

ct/papra.sh

@@ -35,22 +35,18 @@ function update_script() {
     systemctl stop papra
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Configuration"
-    if [[ -f /opt/papra/apps/papra-server/.env ]]; then
-      cp /opt/papra/apps/papra-server/.env /opt/papra_env.bak
-    fi
-    msg_ok "Backed up Configuration"
+    create_backup /opt/papra/apps/papra-server/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "papra" "papra-hq/papra" "tarball"
 
+    restore_backup
+
     pnpm_version=$(grep -oP '"packageManager":\s*"pnpm@\K[^"]+' /opt/papra/package.json)
     NODE_VERSION="26" NODE_MODULE="pnpm@$pnpm_version" setup_nodejs
 
     msg_info "Building Application"
     cd /opt/papra
-    if [[ -f /opt/papra_env.bak ]]; then
-      cp /opt/papra_env.bak /opt/papra/apps/papra-server/.env
-    else
+    if [[ ! -f /opt/papra/apps/papra-server/.env ]]; then
       msg_warn ".env missing, regenerating from defaults"
       LOCAL_IP=$(hostname -I | awk '{print $1}')
       cat <<EOF >/opt/papra/apps/papra-server/.env
@@ -74,7 +70,6 @@ EOF
     $STD pnpm --filter "@papra/app-client..." run build
     $STD pnpm --filter "@papra/app-server..." run build
     ln -sf /opt/papra/apps/papra-client/dist /opt/papra/apps/papra-server/public
-    rm -f /opt/papra_env.bak
     msg_ok "Built Application"
 
     msg_info "Starting Service"

ct/patchmon.sh

@@ -72,9 +72,13 @@ EOF
       msg_ok "Migration complete!"
     fi
 
+    create_backup /opt/patchmon/.env
+
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "PatchMon" "PatchMon/PatchMon" "singlefile" "latest" "/opt/patchmon" "patchmon-server-linux-$(arch_resolve)"
     mv /opt/patchmon/PatchMon /opt/patchmon/patchmon-server
 
+    restore_backup
+
     msg_info "Fetching PatchMon agent binaries"
     RELEASE=$(get_latest_github_release "PatchMon/PatchMon")
     [[ ! -d /opt/patchmon/agents ]] && mkdir -p /opt/patchmon/agents

ct/postiz.sh

@@ -41,8 +41,6 @@ function update_script() {
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "postiz" "gitroomhq/postiz-app" "tarball"
 
-    # Restore BEFORE the build: CLEAN_INSTALL wiped /opt/postiz including .env,
-    # and the build below sources it
     restore_backup
 
     msg_info "Building Application"

ct/powerdns.sh

@@ -36,18 +36,14 @@ function update_script() {
   msg_ok "Updated PowerDNS"
 
   if check_for_gh_release "poweradmin" "poweradmin/poweradmin"; then
-    msg_info "Backing up Configuration"
-    cp /opt/poweradmin/config/settings.php /opt/poweradmin_settings.php.bak
-    cp /opt/poweradmin/powerdns.db /opt/poweradmin_powerdns.db.bak
-    msg_ok "Backed up Configuration"
+    create_backup /opt/poweradmin/config/settings.php /opt/poweradmin/powerdns.db
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "poweradmin" "poweradmin/poweradmin" "tarball"
 
+    restore_backup
+
     msg_info "Updating Poweradmin"
-    cp /opt/poweradmin_settings.php.bak /opt/poweradmin/config/settings.php
-    cp /opt/poweradmin_powerdns.db.bak /opt/poweradmin/powerdns.db
     rm -rf /opt/poweradmin/install
-    rm -f /opt/poweradmin_settings.php.bak /opt/poweradmin_powerdns.db.bak
     chown -R www-data:pdns /opt/poweradmin
     chmod 775 /opt/poweradmin
     chown pdns:pdns /opt/poweradmin/powerdns.db

ct/radicale.sh

@@ -34,17 +34,12 @@ function update_script() {
     systemctl stop radicale
     msg_ok "Stopped service"
 
-    msg_info "Backing up users file"
-    cp /opt/radicale/users /opt/radicale_users_backup
-    msg_ok "Backed up users file"
+    create_backup /opt/radicale/users
 
     PYTHON_VERSION="3.13" setup_uv
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "Radicale" "Kozea/Radicale" "tarball" "latest" "/opt/radicale"
 
-    msg_info "Restoring users file"
-    rm -f /opt/radicale/users
-    mv /opt/radicale_users_backup /opt/radicale/users
-    msg_ok "Restored users file"
+    restore_backup
 
     if grep -q 'start.sh' /etc/systemd/system/radicale.service; then
       sed -i -e '/^Description/i[Unit]' \

ct/reactive-resume.sh

@@ -36,10 +36,12 @@ function update_script() {
 
     ensure_dependencies git
 
-    cp /opt/reactive-resume/.env /opt/reactive-resume.env.bak
+    create_backup /opt/reactive-resume/.env
     NODE_VERSION="24" NODE_MODULE="corepack" setup_nodejs
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "reactive-resume" "amruthpillai/reactive-resume" "tarball" "latest" "/opt/reactive-resume"
 
+    restore_backup
+
     msg_info "Updating Reactive Resume (Patience)"
     cd /opt/reactive-resume
     export COREPACK_ENABLE_DOWNLOAD_PROMPT=0
@@ -49,7 +51,6 @@ function update_script() {
     export NODE_ENV="production"
     $STD pnpm install --frozen-lockfile
     $STD pnpm run build
-    mv /opt/reactive-resume.env.bak /opt/reactive-resume/.env
     msg_ok "Updated Reactive Resume"
 
     msg_info "Updating Service"

ct/rustypaste.sh

@@ -35,18 +35,11 @@ function update_script() {
     systemctl stop rustypaste
     msg_ok "Stopped Services"
 
-    msg_info "Creating Backup"
-    tar -czf "/opt/rustypaste_backup_$(date +%F).tar.gz" /opt/rustypaste/upload 2>/dev/null || true
-    cp /opt/rustypaste/config.toml /tmp/rustypaste_config.toml.bak
-    msg_ok "Backup Created"
+    create_backup /opt/rustypaste/upload /opt/rustypaste/config.toml
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "rustypaste" "orhun/rustypaste" "prebuild" "latest" "/opt/rustypaste" "*x86_64-unknown-linux-gnu.tar.gz"
 
-    msg_info "Restoring Data"
-    mv /tmp/rustypaste_config.toml.bak /opt/rustypaste/config.toml
-    tar -xzf "/opt/rustypaste_backup_$(date +%F).tar.gz" -C /opt/rustypaste/upload 2>/dev/null || true
-    rm -rf /opt/rustypaste_backup_$(date +%F).tar.gz
-    msg_ok "Restored Data"
+    restore_backup
 
     msg_info "Starting Services"
     systemctl start rustypaste

ct/scanopy.sh

@@ -36,19 +36,16 @@ function update_script() {
     [[ -f /etc/systemd/system/scanopy-daemon.service ]] && systemctl stop scanopy-daemon
     msg_ok "Stopped services"
 
-    msg_info "Backing up configurations"
-    cp /opt/scanopy/.env /opt/scanopy.env
-    [[ -f /opt/scanopy/oidc.toml ]] && cp /opt/scanopy/oidc.toml /opt/scanopy.oidc.toml
-    msg_ok "Backed up configurations"
+    create_backup /opt/scanopy/.env /opt/scanopy/oidc.toml
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "Scanopy" "scanopy/scanopy" "tarball" "latest" "/opt/scanopy"
 
+    restore_backup
+
     ensure_dependencies pkg-config libssl-dev
     TOOLCHAIN="$(grep "channel" /opt/scanopy/backend/rust-toolchain.toml | awk -F\" '{print $2}')"
     RUST_TOOLCHAIN=$TOOLCHAIN setup_rust
 
-    [[ -f /opt/scanopy.env ]] && mv /opt/scanopy.env /opt/scanopy/.env
-    [[ -f /opt/scanopy.oidc.toml ]] && mv /opt/scanopy.oidc.toml /opt/scanopy/oidc.toml
     if ! grep -q "PUBLIC_URL" /opt/scanopy/.env; then
       sed -i "\|_PATH=|a\\scanopy_PUBLIC_URL=http://${LOCAL_IP}:60072" /opt/scanopy/.env
     fi

ct/shelfmark.sh

@@ -52,11 +52,12 @@ function update_script() {
       msg_ok "Updated FlareSolverr"
     fi
 
-    cp /opt/shelfmark/start.sh /opt/start.sh.bak
+    create_backup /opt/shelfmark/start.sh
     if command -v chromedriver &>/dev/null; then
       $STD apt remove -y chromium-driver
     fi
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "shelfmark" "calibrain/shelfmark" "tarball" "latest" "/opt/shelfmark"
+    restore_backup
     RELEASE_VERSION=$(cat "$HOME/.shelfmark")
 
     msg_info "Updating Shelfmark"
@@ -74,7 +75,6 @@ function update_script() {
     else
       $STD uv sync --active --locked --no-default-groups
     fi
-    mv /opt/start.sh.bak /opt/shelfmark/start.sh
     msg_ok "Updated Shelfmark"
 
     msg_info "Starting Service(s)"

ct/shlink.sh

@@ -35,19 +35,11 @@ function update_script() {
     systemctl stop shlink
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Data"
-    cp /opt/shlink/.env /opt/shlink.env.bak
-    cp -r /opt/shlink/data /opt/shlink_data_backup
-    msg_ok "Backed up Data"
+    create_backup /opt/shlink/.env /opt/shlink/data
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "shlink" "shlinkio/shlink" "prebuild" "latest" "/opt/shlink" "shlink*_php8.5_dist.zip"
 
-    msg_info "Restoring Data"
-    cp /opt/shlink.env.bak /opt/shlink/.env
-    rm -f /opt/shlink.env.bak
-    cp -r /opt/shlink_data_backup/. /opt/shlink/data
-    rm -rf /opt/shlink_data_backup
-    msg_ok "Restored Data"
+    restore_backup
 
     msg_info "Updating Application"
     cd /opt/shlink

ct/slskd.sh

@@ -36,19 +36,17 @@ function update_script() {
     [[ -f /etc/systemd/system/soularr.service ]] && systemctl stop soularr.timer soularr.service
     msg_ok "Stopped Service(s)"
 
-    msg_info "Backing up config"
-    cp /opt/slskd/config/slskd.yml /opt/slskd.yml.bak
-    msg_ok "Backed up config"
+    create_backup /opt/slskd/config/slskd.yml
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "Slskd" "slskd/slskd" "prebuild" "latest" "/opt/slskd" "slskd-*-linux-$(arch_resolve "x64" "arm64").zip"
 
-    msg_info "Restoring config"
-    mv /opt/slskd.yml.bak /opt/slskd/config/slskd.yml
+    restore_backup
 
+    msg_info "Migrating config"
     # Migrate 0.25.0 breaking config key renames
     sed -i 's/^global:/transfers:/' /opt/slskd/config/slskd.yml
     sed -i 's/^integration:/integrations:/' /opt/slskd/config/slskd.yml
-    msg_ok "Restored config"
+    msg_ok "Migrated config"
 
     msg_info "Starting Service(s)"
     systemctl start slskd
@@ -63,13 +61,11 @@ function update_script() {
       msg_ok "Stopped Timer and Service"
     fi
 
-    msg_info "Backing up Soularr config"
-    cp /opt/soularr/config.ini /opt/soularr_config.ini.bak
-    cp /opt/soularr/run.sh /opt/soularr_run.sh.bak
-    msg_ok "Backed up Soularr config"
+    create_backup /opt/soularr/config.ini /opt/soularr/run.sh
 
     PYTHON_VERSION="3.11" setup_uv
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "Soularr" "mrusse/soularr" "tarball" "latest" "/opt/soularr"
+    restore_backup
     msg_info "Updating Soularr"
     cd /opt/soularr
     $STD uv venv -c venv
@@ -78,11 +74,6 @@ function update_script() {
     deactivate
     msg_ok "Updated Soularr"
 
-    msg_info "Restoring Soularr config"
-    mv /opt/soularr_config.ini.bak /opt/soularr/config.ini
-    mv /opt/soularr_run.sh.bak /opt/soularr/run.sh
-    msg_ok "Restored Soularr config"
-
     msg_info "Starting Soularr Timer"
     systemctl restart soularr.timer
     msg_ok "Started Soularr Timer"

ct/solidtime.sh

@@ -35,19 +35,11 @@ function update_script() {
     systemctl stop caddy
     msg_ok "Stopped Services"
 
-    msg_info "Backing up Data"
-    cp /opt/solidtime/.env /opt/solidtime.env.bak
-    cp -r /opt/solidtime/storage /opt/solidtime_storage_backup
-    msg_ok "Backed up Data"
+    create_backup /opt/solidtime/.env /opt/solidtime/storage
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "solidtime" "solidtime-io/solidtime" "tarball"
 
-    msg_info "Restoring Data"
-    cp /opt/solidtime.env.bak /opt/solidtime/.env
-    rm -f /opt/solidtime.env.bak
-    cp -r /opt/solidtime_storage_backup/. /opt/solidtime/storage
-    rm -rf /opt/solidtime_storage_backup
-    msg_ok "Restored Data"
+    restore_backup
 
     msg_info "Updating Application"
     cd /opt/solidtime

ct/soulsync.sh

@@ -37,13 +37,12 @@ function update_script() {
     systemctl stop soulsync
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Data"
-    mv /opt/soulsync/config /opt/soulsync-config.bak
-    mv /opt/soulsync/data /opt/soulsync-data.bak
-    msg_ok "Backed up Data"
+    create_backup /opt/soulsync/config /opt/soulsync/data
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "soulsync" "Nezreka/SoulSync" "tarball"
 
+    restore_backup
+
     msg_info "Updating Python Dependencies"
     cd /opt/soulsync
     $STD uv venv --clear /opt/soulsync/.venv --python 3.11
@@ -56,9 +55,6 @@ function update_script() {
     $STD npm run build
     msg_ok "Built WebUI"
 
-    mv /opt/soulsync-config.bak /opt/soulsync/config
-    mv /opt/soulsync-data.bak /opt/soulsync/data
-
     msg_info "Starting Service"
     systemctl start soulsync
     msg_ok "Started Service"

ct/sparkyfitness.sh

@@ -35,18 +35,12 @@ function update_script() {
     systemctl stop sparkyfitness-server nginx
     msg_ok "Stopped Services"
 
-    msg_info "Backing up data"
-    mkdir -p /opt/sparkyfitness_backup
-    if [[ -d /opt/sparkyfitness/SparkyFitnessServer/uploads ]]; then
-      cp -r /opt/sparkyfitness/SparkyFitnessServer/uploads /opt/sparkyfitness_backup/
-    fi
-    if [[ -d /opt/sparkyfitness/SparkyFitnessServer/backup ]]; then
-      cp -r /opt/sparkyfitness/SparkyFitnessServer/backup /opt/sparkyfitness_backup/
-    fi
-    msg_ok "Backed up data"
+    create_backup /opt/sparkyfitness/SparkyFitnessServer/uploads /opt/sparkyfitness/SparkyFitnessServer/backup
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "sparkyfitness" "CodeWithCJ/SparkyFitness" "tarball"
 
+    restore_backup
+
     PNPM_VERSION="$(jq -r '.packageManager | split("@")[1]' /opt/sparkyfitness/package.json)"
     NODE_VERSION="25" NODE_MODULE="pnpm@${PNPM_VERSION}" setup_nodejs
 
@@ -96,11 +90,6 @@ EOF
     systemctl daemon-reload
     msg_ok "Refreshed SparkyFitness Service"
 
-    msg_info "Restoring data"
-    cp -r /opt/sparkyfitness_backup/. /opt/sparkyfitness/SparkyFitnessServer/
-    rm -rf /opt/sparkyfitness_backup
-    msg_ok "Restored data"
-
     msg_info "Starting Services"
     $STD systemctl start sparkyfitness-server nginx
     msg_ok "Started Services"

ct/spliit.sh

@@ -35,16 +35,11 @@ function update_script() {
     systemctl stop spliit
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Configuration"
-    rm -f /opt/spliit.env.bak
-    cp /opt/spliit/.env /opt/spliit.env.bak
-    msg_ok "Backed up Configuration"
+    create_backup /opt/spliit/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "spliit" "spliit-app/spliit" "tarball"
 
-    msg_info "Restoring Configuration"
-    cp /opt/spliit.env.bak /opt/spliit/.env
-    msg_ok "Restored Configuration"
+    restore_backup
 
     msg_info "Building Application"
     cd /opt/spliit

ct/spoolman.sh

@@ -36,18 +36,16 @@ function update_script() {
     systemctl stop spoolman
     msg_ok "Stopped Service"
 
-    msg_info "Creating Backup"
-    [ -d /opt/spoolman_bak ] && rm -rf /opt/spoolman_bak
-    mv /opt/spoolman /opt/spoolman_bak
-    msg_ok "Created Backup"
+    create_backup /opt/spoolman/.env
 
-    fetch_and_deploy_gh_release "spoolman" "Donkie/Spoolman" "prebuild" "latest" "/opt/spoolman" "spoolman.zip"
+    CLEAN_INSTALL=1 fetch_and_deploy_gh_release "spoolman" "Donkie/Spoolman" "prebuild" "latest" "/opt/spoolman" "spoolman.zip"
+
+    restore_backup
 
     msg_info "Updating Spoolman"
     cd /opt/spoolman
     $STD uv sync --locked --no-install-project
     $STD uv sync --locked
-    cp /opt/spoolman_bak/.env /opt/spoolman
     sed -i 's|^ExecStart=.*|ExecStart=/usr/bin/bash /opt/spoolman/scripts/start.sh|' /etc/systemd/system/spoolman.service
     msg_ok "Updated Spoolman"
 

ct/storyteller.sh

@@ -37,15 +37,11 @@ function update_script() {
     systemctl stop storyteller
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Data"
-    cp /opt/storyteller/.env /opt/storyteller_env.bak
-    msg_ok "Backed up Data"
+    create_backup /opt/storyteller/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gl_release "storyteller" "storyteller-platform/storyteller" "tarball" "latest" "/opt/storyteller" "" "web-v2"
 
-    msg_info "Restoring Configuration"
-    mv /opt/storyteller_env.bak /opt/storyteller/.env
-    msg_ok "Restored Configuration"
+    restore_backup
 
     msg_info "Rebuilding Storyteller"
     cd /opt/storyteller

ct/tandoor.sh

@@ -43,17 +43,15 @@ function update_script() {
     systemctl stop tandoor
     msg_ok "Stopped Service"
 
-    msg_info "Creating Backup"
-    mv /opt/tandoor /opt/tandoor.bak
-    msg_ok "Backup Created"
+    create_backup /opt/tandoor/config /opt/tandoor/api /opt/tandoor/mediafiles /opt/tandoor/staticfiles /opt/tandoor/.env
 
     NODE_VERSION="22" NODE_MODULE="yarn" setup_nodejs
     PYTHON_VERSION="3.13" setup_uv
-    fetch_and_deploy_gh_release "tandoor" "TandoorRecipes/recipes" "tarball" "latest" "/opt/tandoor"
+    CLEAN_INSTALL=1 fetch_and_deploy_gh_release "tandoor" "TandoorRecipes/recipes" "tarball" "latest" "/opt/tandoor"
+
+    restore_backup
 
     msg_info "Updating Tandoor"
-    cp -r /opt/tandoor.bak/{config,api,mediafiles,staticfiles} /opt/tandoor/
-    mv /opt/tandoor.bak/.env /opt/tandoor/.env
     cd /opt/tandoor
     $STD uv venv --clear .venv --python=python3
     $STD uv pip install -r requirements.txt --python .venv/bin/python
@@ -69,7 +67,6 @@ EOF
     cd /opt/tandoor
     $STD /opt/tandoor/.venv/bin/python manage.py migrate
     $STD /opt/tandoor/.venv/bin/python manage.py collectstatic --no-input
-    rm -rf /opt/tandoor.bak
     msg_ok "Updated Tandoor"
 
     msg_info "Starting Service"

ct/tautulli.sh

@@ -36,13 +36,12 @@ function update_script() {
     systemctl stop tautulli
     msg_ok "Stopped Service"
 
-    msg_info "Backing up config and database"
-    cp /opt/Tautulli/config.ini /opt/tautulli_config.ini.backup
-    cp /opt/Tautulli/tautulli.db /opt/tautulli.db.backup
-    msg_ok "Backed up config and database"
+    create_backup /opt/Tautulli/config.ini /opt/Tautulli/tautulli.db
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "Tautulli" "Tautulli/Tautulli" "tarball"
 
+    restore_backup
+
     msg_info "Updating Tautulli"
     cd /opt/Tautulli
     TAUTULLI_VERSION=$(get_latest_github_release "Tautulli/Tautulli" "false")
@@ -55,12 +54,6 @@ function update_script() {
     $STD uv pip install "setuptools<81"
     msg_ok "Updated Tautulli"
 
-    msg_info "Restoring config and database"
-    cp /opt/tautulli_config.ini.backup /opt/Tautulli/config.ini
-    cp /opt/tautulli.db.backup /opt/Tautulli/tautulli.db
-    rm -f /opt/{tautulli_config.ini.backup,tautulli.db.backup}
-    msg_ok "Restored config and database"
-
     msg_info "Starting Service"
     systemctl start tautulli
     msg_ok "Started Service"

ct/teable.sh

@@ -36,15 +36,11 @@ function update_script() {
     systemctl stop teable
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Configuration"
-    cp /opt/teable/.env /opt/teable.env.bak
-    msg_ok "Backed up Configuration"
+    create_backup /opt/teable/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "teable" "teableio/teable" "tarball"
 
-    msg_info "Restoring Configuration"
-    mv /opt/teable.env.bak /opt/teable/.env
-    msg_ok "Restored Configuration"
+    restore_backup
 
     msg_info "Rebuilding Teable"
     cd /opt/teable

ct/teddycloud.sh

@@ -34,16 +34,11 @@ function update_script() {
     systemctl stop teddycloud
     msg_ok "Stopped Service"
 
-    msg_info "Creating backup"
-    mv /opt/teddycloud /opt/teddycloud_bak
-    msg_ok "Backup created"
+    create_backup /opt/teddycloud/certs /opt/teddycloud/config /opt/teddycloud/data
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "teddycloud" "toniebox-reverse-engineering/teddycloud" "prebuild" "latest" "/opt/teddycloud" "teddycloud.amd64.release*.zip"
 
-    msg_info "Restoring data"
-    cp -R /opt/teddycloud_bak/certs /opt/teddycloud_bak/config /opt/teddycloud_bak/data /opt/teddycloud
-    rm -rf /opt/teddycloud_bak
-    msg_ok "Data restored"
+    restore_backup
 
     msg_info "Starting Service"
     systemctl start teddycloud

ct/termix.sh

@@ -143,13 +143,12 @@ EOF
     fi
     msg_ok "Migrated Configuration"
 
-    msg_info "Backing up Data"
-    cp -r /opt/termix/data /opt/termix_data_backup
-    cp -r /opt/termix/uploads /opt/termix_uploads_backup
-    msg_ok "Backed up Data"
+    create_backup /opt/termix/data /opt/termix/uploads
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "termix" "Termix-SSH/Termix" "tarball"
 
+    restore_backup
+
     msg_info "Recreating Directories"
     mkdir -p /opt/termix/html \
       /opt/termix/nginx \
@@ -177,12 +176,6 @@ EOF
     $STD npm cache clean --force
     msg_ok "Set up Production Dependencies"
 
-    msg_info "Restoring Data"
-    cp -r /opt/termix_data_backup /opt/termix/data
-    cp -r /opt/termix_uploads_backup /opt/termix/uploads
-    rm -rf /opt/termix_data_backup /opt/termix_uploads_backup
-    msg_ok "Restored Data"
-
     msg_info "Updating Frontend Files"
     rm -rf /opt/termix/html/*
     cp -r /opt/termix/dist/* /opt/termix/html/ 2>/dev/null || true

ct/tianji.sh

@@ -36,12 +36,11 @@ function update_script() {
     systemctl stop tianji
     msg_ok "Stopped Service"
 
-    msg_info "Backing up data"
-    cp /opt/tianji/src/server/.env /opt/.env
-    mv /opt/tianji /opt/tianji_bak
-    msg_ok "Backed up data"
+    create_backup /opt/tianji/src/server/.env
 
-    fetch_and_deploy_gh_release "tianji" "msgbyte/tianji" "tarball"
+    CLEAN_INSTALL=1 fetch_and_deploy_gh_release "tianji" "msgbyte/tianji" "tarball"
+
+    restore_backup
 
     msg_info "Updating Tianji"
     cd /opt/tianji
@@ -52,10 +51,8 @@ function update_script() {
     mkdir -p ./src/server/public
     cp -r ./geo ./src/server/public
     $STD pnpm build:server
-    mv /opt/.env /opt/tianji/src/server/.env
     cd src/server
     $STD pnpm db:migrate:apply
-    rm -rf /opt/tianji_bak
     rm -rf /opt/tianji/src/client
     rm -rf /opt/tianji/website
     rm -rf /opt/tianji/reporter

ct/transmute.sh

@@ -40,13 +40,12 @@ function update_script() {
     systemctl stop transmute
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Data"
-    cp /opt/transmute/backend/.env /opt/transmute.env.bak
-    cp -r /opt/transmute/data /opt/transmute_data_bak
-    msg_ok "Backed up Data"
+    create_backup /opt/transmute/backend/.env /opt/transmute/data
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "transmute" "transmute-app/transmute" "tarball"
 
+    restore_backup
+
     msg_info "Updating Python Dependencies"
     cd /opt/transmute
     $STD uv venv --clear /opt/transmute/.venv
@@ -59,12 +58,6 @@ function update_script() {
     $STD npm run build
     msg_ok "Rebuilt Frontend"
 
-    msg_info "Restoring Data"
-    cp /opt/transmute.env.bak /opt/transmute/backend/.env
-    cp -r /opt/transmute_data_bak/. /opt/transmute/data/
-    rm -f /opt/transmute.env.bak
-    rm -rf /opt/transmute_data_bak
-    msg_ok "Restored Data"
 
     msg_info "Starting Service"
     systemctl start transmute

ct/tubearchivist.sh

@@ -35,12 +35,12 @@ function update_script() {
     systemctl stop tubearchivist tubearchivist-celery tubearchivist-beat
     msg_ok "Stopped Services"
 
-    msg_info "Backing up Data"
-    cp /opt/tubearchivist/.env /opt/tubearchivist_env.bak
-    msg_ok "Backed up Data"
+    create_backup /opt/tubearchivist/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "tubearchivist" "tubearchivist/tubearchivist" "tarball"
 
+    restore_backup
+
     msg_info "Rebuilding Tube Archivist"
     cd /opt/tubearchivist/frontend
     $STD npm install
@@ -56,7 +56,6 @@ function update_script() {
     msg_ok "Rebuilt Tube Archivist"
 
     msg_info "Restoring Configuration"
-    mv /opt/tubearchivist_env.bak /opt/tubearchivist/.env
     sed -i 's|^TA_APP_DIR=/opt/tubearchivist$|TA_APP_DIR=/opt/tubearchivist/backend|' /opt/tubearchivist/.env
     sed -i 's|^TA_CACHE_DIR=/opt/tubearchivist/cache$|TA_CACHE_DIR=/cache|' /opt/tubearchivist/.env
     sed -i 's|^TA_MEDIA_DIR=/opt/tubearchivist/media$|TA_MEDIA_DIR=/youtube|' /opt/tubearchivist/.env

ct/umami.sh

@@ -34,9 +34,9 @@ function update_script() {
     systemctl stop umami
     msg_ok "Stopped Service"
 
-    mv /opt/umami/.env /opt/.env.bak
+    create_backup /opt/umami/.env
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "umami" "umami-software/umami" "tarball"
-    mv /opt/.env.bak /opt/umami/.env
+    restore_backup
 
     msg_info "Updating Umami"
     cd /opt/umami

ct/umlautadaptarr.sh

@@ -34,9 +34,9 @@ function update_script() {
     systemctl stop umlautadaptarr
     msg_ok "Stopped Service"
 
-    cp /opt/UmlautAdaptarr/appsettings.json /opt/UmlautAdaptarr/appsettings.json.bak
+    create_backup /opt/UmlautAdaptarr/appsettings.json
     fetch_and_deploy_gh_release "UmlautAdaptarr" "PCJones/Umlautadaptarr" "prebuild" "latest" "/opt/UmlautAdaptarr" "linux-x64.zip"
-    cp /opt/UmlautAdaptarr/appsettings.json.bak /opt/UmlautAdaptarr/appsettings.json
+    restore_backup
 
     msg_info "Starting Service"
     systemctl start umlautadaptarr

ct/wallabag.sh

@@ -38,16 +38,11 @@ function update_script() {
     systemctl stop nginx php8.3-fpm
     msg_ok "Stopped Services"
 
-    msg_info "Creating Backup"
-    cp /opt/wallabag/app/config/parameters.yml /tmp/wallabag_parameters.yml.bak
-    msg_ok "Created Backup"
+    create_backup /opt/wallabag/app/config/parameters.yml
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "wallabag" "wallabag/wallabag" "prebuild" "latest" "/opt/wallabag" "wallabag-*.tar.gz"
 
-    msg_info "Restoring Configuration"
-    cp /tmp/wallabag_parameters.yml.bak /opt/wallabag/app/config/parameters.yml
-    rm -f /tmp/wallabag_parameters.yml.bak
-    msg_ok "Restored Configuration"
+    restore_backup
 
     msg_info "Running Migrations"
     cd /opt/wallabag

ct/wealthfolio.sh

@@ -39,19 +39,12 @@ function update_script() {
     systemctl stop wealthfolio
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Data"
-    cp -r /opt/wealthfolio_data /opt/wealthfolio_data_backup
-    cp /opt/wealthfolio/.env /opt/wealthfolio_env_backup
-    msg_ok "Backed up Data"
+    create_backup /opt/wealthfolio_data /opt/wealthfolio/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "wealthfolio" "wealthfolio/wealthfolio" "prebuild" "latest" "/opt/wealthfolio" "wealthfolio-server-*-linux-amd64.tar.gz"
-    install -m 755 /opt/wealthfolio/wealthfolio-server /usr/local/bin/wealthfolio-server
 
-    msg_info "Restoring Data"
-    cp -r /opt/wealthfolio_data_backup/. /opt/wealthfolio_data
-    cp /opt/wealthfolio_env_backup /opt/wealthfolio/.env
-    rm -rf /opt/wealthfolio_data_backup /opt/wealthfolio_env_backup
-    msg_ok "Restored Data"
+    restore_backup
+    install -m 755 /opt/wealthfolio/wealthfolio-server /usr/local/bin/wealthfolio-server
 
     msg_info "Starting Service"
     systemctl start wealthfolio

ct/web-check.sh

@@ -34,16 +34,12 @@ function update_script() {
     systemctl stop web-check
     msg_ok "Stopped Service"
 
-    msg_info "Creating backup"
-    mv /opt/web-check/.env /opt
-    msg_ok "Created backup"
+    create_backup /opt/web-check/.env
 
     NODE_VERSION="22" NODE_MODULE="yarn" setup_nodejs
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "web-check" "Lissy93/web-check" "tarball"
 
-    msg_info "Restoring backup"
-    mv /opt/.env /opt/web-check
-    msg_ok "Restored backup"
+    restore_backup
 
     msg_info "Building Web-Check"
     cd /opt/web-check 

ct/webtrees.sh

@@ -36,17 +36,12 @@ function update_script() {
     systemctl stop caddy php${PHP_VER}-fpm
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Data"
-    cp -r /opt/webtrees/data /opt/webtrees_data_backup
-    msg_ok "Backed up Data"
+    create_backup /opt/webtrees/data
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "webtrees" "fisharebest/webtrees" "prebuild" "latest" "/opt/webtrees" "webtrees-*.zip"
 
-    msg_info "Restoring Data"
-    cp -r /opt/webtrees_data_backup/. /opt/webtrees/data
-    rm -rf /opt/webtrees_data_backup
+    restore_backup
     chown -R www-data:www-data /opt/webtrees
-    msg_ok "Restored Data"
 
     msg_info "Starting Service"
     systemctl start caddy php${PHP_VER}-fpm

ct/wishlist.sh

@@ -35,16 +35,13 @@ function update_script() {
     systemctl stop wishlist
     msg_ok "Stopped Service"
 
-    msg_info "Creating Backup"
-    mkdir -p /opt/wishlist-backup
-    cp /opt/wishlist/.env /opt/wishlist-backup/.env
-    cp -a /opt/wishlist/uploads /opt/wishlist-backup
-    cp -a /opt/wishlist/data /opt/wishlist-backup
-    msg_ok "Created Backup"
+    create_backup /opt/wishlist/.env /opt/wishlist/uploads /opt/wishlist/data
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "wishlist" "cmintey/wishlist" "tarball"
     LATEST_APP_VERSION=$(get_latest_github_release "cmintey/wishlist")
 
+    restore_backup
+
     msg_info "Updating Wishlist"
     cd /opt/wishlist
     $STD pnpm install --frozen-lockfile
@@ -56,13 +53,6 @@ function update_script() {
     $STD pnpm run build
     $STD pnpm prune --prod
     chmod +x /opt/wishlist/entrypoint.sh
-
-    msg_info "Restoring Backup"
-    cp /opt/wishlist-backup/.env /opt/wishlist/.env
-    cp -a /opt/wishlist-backup/uploads /opt/wishlist
-    cp -a /opt/wishlist-backup/data /opt/wishlist
-    rm -rf /opt/wishlist-backup
-    msg_ok "Restored Backup"
     
     msg_ok "Updated Wishlist"
     msg_info "Starting Service"

ct/writefreely.sh

@@ -35,19 +35,11 @@ function update_script() {
     systemctl stop writefreely
     msg_ok "Stopped Services"
 
-    msg_info "Creating Backup"
-    mkdir -p /tmp/writefreely_backup
-    cp /opt/writefreely/keys /tmp/writefreely_backup/ 2>/dev/null
-    cp /opt/writefreely/config.ini /tmp/writefreely_backup/ 2>/dev/null
-    msg_ok "Created Backup"
+    create_backup /opt/writefreely/keys /opt/writefreely/config.ini
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "writefreely" "writefreely/writefreely" "prebuild" "latest" "/opt/writefreely" "writefreely_*_linux_$(arch_resolve).tar.gz"
 
-    msg_info "Restoring Data"
-    cp /tmp/writefreely_backup/config.ini /opt/writefreely/ 2>/dev/null
-    cp /tmp/writefreely_backup/keys/* /opt/writefreely/keys/ 2>/dev/null
-    rm -rf /tmp/writefreely_backup
-    msg_ok "Restored Data"
+    restore_backup
 
     msg_info "Running Post-Update Tasks"
     cd /opt/writefreely

ct/xyops.sh

@@ -35,13 +35,12 @@ function update_script() {
     systemctl stop xyops
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Data"
-    cp -r /opt/xyops/data /opt/xyops_data_backup
-    cp -r /opt/xyops/conf /opt/xyops_conf_backup
-    msg_ok "Backed up Data"
+    create_backup /opt/xyops/data /opt/xyops/conf
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "xyops" "pixlcore/xyops" "tarball"
 
+    restore_backup
+
     msg_info "Rebuilding Application"
     cd /opt/xyops
     $STD npm install
@@ -49,12 +48,6 @@ function update_script() {
     chmod 644 /opt/xyops/node_modules/useragent-ng/lib/regexps.js
     msg_ok "Rebuilt Application"
 
-    msg_info "Restoring Data"
-    cp -r /opt/xyops_data_backup/. /opt/xyops/data
-    cp -r /opt/xyops_conf_backup/. /opt/xyops/conf
-    rm -rf /opt/xyops_data_backup /opt/xyops_conf_backup
-    msg_ok "Restored Data"
-
     msg_info "Starting Service"
     systemctl start xyops
     msg_ok "Started Service"

ct/yamtrack.sh

@@ -36,22 +36,17 @@ function update_script() {
     systemctl stop yamtrack yamtrack-celery
     msg_ok "Stopped Services"
 
-    msg_info "Backing up Data"
-    cp /opt/yamtrack/src/.env /opt/yamtrack_env.bak
-    msg_ok "Backed up Data"
+    create_backup /opt/yamtrack/src/.env
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "yamtrack" "FuzzyGrim/Yamtrack" "tarball"
 
+    restore_backup
+
     msg_info "Installing Python Dependencies"
     cd /opt/yamtrack
     $STD uv sync --locked
     msg_ok "Installed Python Dependencies"
 
-    msg_info "Restoring Data"
-    cp /opt/yamtrack_env.bak /opt/yamtrack/src/.env
-    rm -f /opt/yamtrack_env.bak
-    msg_ok "Restored Data"
-
     msg_info "Updating Yamtrack"
     cd /opt/yamtrack/src
     $STD /opt/yamtrack/.venv/bin/python manage.py migrate

ct/yourls.sh

@@ -35,17 +35,12 @@ function update_script() {
     systemctl stop nginx
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Configuration"
-    cp -r /opt/yourls/user /opt/yourls_user.bak
-    msg_ok "Backed up Configuration"
+    create_backup /opt/yourls/user
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "yourls" "YOURLS/YOURLS" "tarball"
-    chown -R www-data:www-data /opt/yourls
 
-    msg_info "Restoring Configuration"
-    cp -r /opt/yourls_user.bak/. /opt/yourls/user/
-    rm -rf /opt/yourls_user.bak
-    msg_ok "Restored Configuration"
+    restore_backup
+    chown -R www-data:www-data /opt/yourls
 
     msg_info "Starting Service"
     systemctl start nginx

ct/zerobyte.sh

@@ -35,14 +35,14 @@ function update_script() {
     systemctl stop zerobyte
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Configuration"
-    cp /opt/zerobyte/.env /opt/zerobyte.env.bak
-    msg_ok "Backed up Configuration"
+    create_backup /opt/zerobyte/.env
     
     ensure_dependencies git
     NODE_VERSION="24" setup_nodejs
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "zerobyte" "nicotsx/zerobyte" "tarball"
 
+    restore_backup
+
     msg_info "Building Zerobyte"
     export NODE_OPTIONS="--max-old-space-size=3072"
     cd /opt/zerobyte
@@ -50,11 +50,6 @@ function update_script() {
     $STD node ./node_modules/vite/bin/vite.js build
     msg_ok "Built Zerobyte"
 
-    msg_info "Restoring Configuration"
-    cp /opt/zerobyte.env.bak /opt/zerobyte/.env
-    rm -f /opt/zerobyte.env.bak
-    msg_ok "Restored Configuration"
-
     msg_info "Starting Service"
     systemctl start zerobyte
     msg_ok "Started Service"

ct/zigbee2mqtt.sh

@@ -37,24 +37,24 @@ function update_script() {
 
     msg_info "Creating Backup"
     ensure_dependencies zstd
-    mkdir -p /opt/{backups,z2m_backup}
+    mkdir -p /opt/backups
     BACKUP_VERSION="$(<"$HOME/.zigbee2mqtt")"
     BACKUP_FILE="/opt/backups/${APP}_backup_${BACKUP_VERSION}.tar.zst"
     $STD tar -cf - -C /opt zigbee2mqtt | zstd -q -o "$BACKUP_FILE"
     ls -t /opt/backups/${APP}_backup_*.tar.zst 2>/dev/null | tail -n +6 | xargs -r rm -f
-    mv /opt/zigbee2mqtt/data /opt/z2m_backup/data
     msg_ok "Backup Created (${BACKUP_VERSION})"
 
+    create_backup /opt/zigbee2mqtt/data
+
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "Zigbee2MQTT" "Koenkk/zigbee2mqtt" "tarball" "latest" "/opt/zigbee2mqtt"
 
+    restore_backup
+
     msg_info "Updating Zigbee2MQTT"
-    rm -rf /opt/zigbee2mqtt/data
-    mv /opt/z2m_backup/data /opt/zigbee2mqtt
     cd /opt/zigbee2mqtt
     grep -q "^packageImportMethod" ./pnpm-workspace.yaml 2>/dev/null || echo "packageImportMethod: hardlink" >>./pnpm-workspace.yaml
     $STD pnpm install --frozen-lockfile
     $STD pnpm build
-    rm -rf /opt/z2m_backup
     msg_ok "Updated Zigbee2MQTT"
 
     msg_info "Starting Service"

install/pangolin-install.sh

@@ -22,7 +22,7 @@ msg_ok "Installed Dependencies"
 NODE_VERSION="24" setup_nodejs
 PG_VERSION="17" setup_postgresql
 PG_DB_NAME="pangolin" PG_DB_USER="pangolin" setup_postgresql_db
-PANGOLIN_VERSION="${PANGOLIN_VERSION:-1.20.0}"
+PANGOLIN_VERSION="${PANGOLIN_VERSION:-1.21.0}"
 fetch_and_deploy_gh_release "pangolin" "fosrl/pangolin" "tarball" "$PANGOLIN_VERSION"
 fetch_and_deploy_gh_release "gerbil" "fosrl/gerbil" "singlefile" "latest" "/usr/bin" "gerbil_linux_$(arch_resolve)"
 fetch_and_deploy_gh_release "traefik" "traefik/traefik" "prebuild" "latest" "/usr/bin" "traefik_v*_linux_$(arch_resolve).tar.gz"

misc/alpine-install.func

@@ -6,6 +6,10 @@
 if ! command -v curl >/dev/null 2>&1; then
   apk update && apk add curl >/dev/null 2>&1
 fi
+# Mark container context BEFORE error handling starts: error_handler/on_exit
+# must write local failure artifacts instead of talking to the telemetry API
+# (the host is the single telemetry reporter).
+export TELEMETRY_CONTEXT="container"
 source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/core.func)
 source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/error_handler.func)
 load_functions
@@ -41,7 +45,7 @@ post_progress_to_api() {
 
   curl -fsS -m 5 -X POST "https://telemetry.community-scripts.org/telemetry" \
     -H "Content-Type: application/json" \
-    -d "{\"random_id\":\"${RANDOM_UUID}\",\"execution_id\":\"${EXECUTION_ID:-${RANDOM_UUID}}\",\"type\":\"lxc\",\"nsapp\":\"${app:-unknown}\",\"status\":\"${progress_status}\"}" &>/dev/null || true
+    -d "{\"random_id\":\"${RANDOM_UUID}\",\"execution_id\":\"${EXECUTION_ID:-${RANDOM_UUID}}\",\"type\":\"lxc\",\"nsapp\":\"${app:-unknown}\",\"status\":\"${progress_status}\",\"platform\":\"${TELEMETRY_PLATFORM:-}\",\"repo_source\":\"${REPO_SOURCE:-}\",\"repo_slug\":\"${REPO_SLUG:-}\"}" &>/dev/null || true
 }
 
 # This function enables IPv6 if it's not disabled and sets verbose mode

misc/build.func

@@ -3831,6 +3831,78 @@ runtime_script_status_guard() {
   return 0
 }
 
+# ------------------------------------------------------------------------------
+# check_container_os_guard()
+#
+# - Compares the container OS (/etc/os-release) with the script's recommended
+#   var_os/var_version before running update_script
+# - On mismatch: interactive runs ask whether to continue (default: no);
+#   headless runs (PHS_SILENT=1 / no tty) abort instead of updating on an
+#   unsupported base and leaving the app broken mid-update
+# - Bypass via var_ignore_os_mismatch=1|yes|true|on (still warns, but continues)
+# ------------------------------------------------------------------------------
+check_container_os_guard() {
+  local rec_os="${var_os:-}" rec_ver="${var_version:-}"
+  rec_os="${rec_os,,}"
+  [[ -z "$rec_os" || -z "$rec_ver" ]] && return 0
+  [[ -r /etc/os-release ]] || return 0
+
+  local cur_os cur_ver
+  cur_os="$(. /etc/os-release 2>/dev/null; echo "${ID:-}")"
+  cur_ver="$(. /etc/os-release 2>/dev/null; echo "${VERSION_ID:-}")"
+  cur_os="${cur_os,,}"
+  [[ -z "$cur_os" || -z "$cur_ver" ]] && return 0
+
+  # Exact version or prefix on a dot boundary (e.g. alpine 3.22 matches 3.22.1)
+  if [[ "$cur_os" == "$rec_os" ]] && [[ "$cur_ver" == "$rec_ver" || "$cur_ver" == "$rec_ver".* ]]; then
+    return 0
+  fi
+
+  case "${var_ignore_os_mismatch:-}" in
+  1 | yes | true | on)
+    msg_warn "Container OS is ${cur_os} ${cur_ver} but the script recommends ${rec_os} ${rec_ver} — continuing via var_ignore_os_mismatch (may break, no support)."
+    return 0
+    ;;
+  esac
+
+  # Persistent opt-out: stores the ignored target version, so the question
+  # comes back once the script targets a newer OS again
+  local ignore_file="/usr/local/community-scripts/ignore-os-mismatch"
+  if [[ -f "$ignore_file" && "$(cat "$ignore_file" 2>/dev/null)" == "${rec_os} ${rec_ver}" ]]; then
+    msg_warn "Container OS is ${cur_os} ${cur_ver} but the script recommends ${rec_os} ${rec_ver} — continuing (previously ignored via ${ignore_file}, may break, no support)."
+    return 0
+  fi
+
+  if [[ "${PHS_SILENT:-0}" != "1" ]] && command -v whiptail &>/dev/null && [ -t 0 ] && [[ "$TERM" != "dumb" ]]; then
+    local choice
+    choice=$(whiptail --backtitle "Proxmox VE Helper Scripts" --title "OS VERSION MISMATCH" --menu \
+      "This container runs ${cur_os} ${cur_ver}, but this script now targets ${rec_os} ${rec_ver}.\n\nUpdating on the older base OS may fail or leave ${APP:-the application} broken (e.g. required runtime versions are not available).\n\nRecommended: upgrade the container OS to ${rec_os} ${rec_ver} first, then run this update again.\n\nIf you continue anyway, it may break — no support is provided in that case.\n\nContinue anyway?" \
+      20 70 3 \
+      "1" "No  (cancel update)" \
+      "2" "Yes (continue this time)" \
+      "3" "Yes (continue and don't ask again)" \
+      --nocancel --default-item "1" 3>&1 1>&2 2>&3)
+    case "$choice" in
+    2)
+      msg_warn "Continuing update on ${cur_os} ${cur_ver} despite recommended ${rec_os} ${rec_ver} — may break, no support."
+      return 0
+      ;;
+    3)
+      mkdir -p "${ignore_file%/*}"
+      echo "${rec_os} ${rec_ver}" >"$ignore_file"
+      msg_warn "Continuing update on ${cur_os} ${cur_ver}; OS check for ${rec_os} ${rec_ver} disabled via ${ignore_file} — may break, no support."
+      return 0
+      ;;
+    esac
+    msg_error "Update cancelled: container OS ${cur_os} ${cur_ver} does not match the recommended ${rec_os} ${rec_ver}."
+    return 1
+  fi
+
+  msg_error "Container OS ${cur_os} ${cur_ver} does not match the recommended ${rec_os} ${rec_ver} — skipping update."
+  msg_error "Upgrade the container OS to ${rec_os} ${rec_ver} first, then run this update again — or bypass this check (may break, no support) with: echo \"${rec_os} ${rec_ver}\" > ${ignore_file}"
+  return 1
+}
+
 # ------------------------------------------------------------------------------
 # start()
 #
@@ -3852,6 +3924,7 @@ start() {
     ensure_profile_loaded
     get_lxc_ip
     runtime_script_status_guard update || return 0
+    check_container_os_guard || return 0
     update_script
     run_addon_updates
     update_motd_ip
@@ -3863,6 +3936,7 @@ start() {
     ensure_profile_loaded
     get_lxc_ip
     runtime_script_status_guard update || return 0
+    check_container_os_guard || return 0
     update_script
     run_addon_updates
     update_motd_ip
@@ -3893,6 +3967,7 @@ start() {
     ensure_profile_loaded
     get_lxc_ip
     runtime_script_status_guard update || return 0
+    check_container_os_guard || return 0
     update_script
     run_addon_updates
     update_motd_ip
@@ -4072,6 +4147,11 @@ build_container() {
   export RANDOM_UUID="$RANDOM_UUID"
   export EXECUTION_ID="$EXECUTION_ID"
   export SESSION_ID="$SESSION_ID"
+  # Repo attribution + platform for container-side progress pings (the
+  # container inherits the host's detection instead of re-detecting)
+  export REPO_SOURCE="${REPO_SOURCE:-}"
+  export REPO_SLUG="${REPO_SLUG:-}"
+  export TELEMETRY_PLATFORM="pve"
   export CACHER="$APT_CACHER"
   export CACHER_IP="$APT_CACHER_IP"
   if [[ -n "${HTTP_PROXY:-}" ]]; then
@@ -4895,6 +4975,16 @@ EOF
         # Point INSTALL_LOG to combined log so get_full_log() finds it
         INSTALL_LOG="$combined_log"
       fi
+
+      # Pull the structured error capture (.errinfo) from the container.
+      # It contains EXACTLY the output of the command that failed (written by
+      # silent()/error_handler inside the container) and is the primary source
+      # for the telemetry error trace - instead of a generic log tail.
+      local host_errinfo="/tmp/.errinfo-${SESSION_ID}"
+      if timeout 8 pct pull "$CTID" "/root/.install-${SESSION_ID}.log.errinfo" "$host_errinfo" 2>/dev/null && [[ -s "$host_errinfo" ]]; then
+        TELEMETRY_ERRINFO="$host_errinfo"
+        export TELEMETRY_ERRINFO
+      fi
     fi
 
     # Defense-in-depth: Ensure error handling stays disabled during recovery.
@@ -5170,6 +5260,8 @@ EOF
         echo -e "  Verbose: ${GN}enabled${CL}"
         echo ""
         msg_info "Restarting installation..."
+        # New telemetry execution for the retry (previous one keeps its "failed")
+        declare -f telemetry_new_attempt &>/dev/null && telemetry_new_attempt
         # Re-run build_container
         build_container
         return $?
@@ -5209,6 +5301,10 @@ EOF
           echo ""
           msg_info "Re-running installation script..."
 
+          # New telemetry execution for the in-place retry
+          declare -f telemetry_new_attempt &>/dev/null && telemetry_new_attempt
+          declare -f post_to_api &>/dev/null && post_to_api 2>/dev/null || true
+
           # Re-run install script in existing container (don't destroy/recreate)
           set +Eeuo pipefail
           trap - ERR
@@ -5272,6 +5368,7 @@ EOF
           echo -e "  Verbose: ${GN}enabled${CL}"
           echo ""
           msg_info "Restarting installation..."
+          declare -f telemetry_new_attempt &>/dev/null && telemetry_new_attempt
           build_container
           return $?
         fi
@@ -5301,6 +5398,7 @@ EOF
           echo -e "  Verbose: ${GN}enabled${CL}"
           echo ""
           msg_info "Restarting installation..."
+          declare -f telemetry_new_attempt &>/dev/null && telemetry_new_attempt
           build_container
           return $?
         fi
@@ -5325,6 +5423,7 @@ EOF
           echo -e "  Verbose: ${GN}enabled${CL}"
           echo ""
           msg_info "Restarting installation..."
+          declare -f telemetry_new_attempt &>/dev/null && telemetry_new_attempt
           build_container
           return $?
         fi
@@ -6999,6 +7098,16 @@ ensure_log_on_host() {
         rm -f "$temp_log"
       fi
     fi
+    # Also pull the structured error capture (.errinfo) so the telemetry error
+    # trace shows the failing command's exact output (signal-exit paths reach
+    # this via on_exit before/instead of the recovery flow)
+    if [[ -z "${TELEMETRY_ERRINFO:-}" || ! -s "${TELEMETRY_ERRINFO:-}" ]]; then
+      local host_errinfo="/tmp/.errinfo-${SESSION_ID}"
+      if timeout 8 pct pull "$CTID" "/root/.install-${SESSION_ID}.log.errinfo" "$host_errinfo" 2>/dev/null && [[ -s "$host_errinfo" ]]; then
+        TELEMETRY_ERRINFO="$host_errinfo"
+        export TELEMETRY_ERRINFO
+      fi
+    fi
     if [[ -s "$combined_log" ]]; then
       INSTALL_LOG="$combined_log"
     fi

misc/core.func

@@ -546,6 +546,12 @@ silent() {
   set +Eeuo pipefail
   trap - ERR
 
+  # Byte offset BEFORE the command runs - everything the log grows by is
+  # exactly this command's output (used for the .errinfo telemetry capture)
+  local start_bytes=0
+  [[ -f "$logfile" ]] && start_bytes=$(stat -c%s "$logfile" 2>/dev/null || echo 0)
+  [[ ! "$start_bytes" =~ ^[0-9]+$ ]] && start_bytes=0
+
   "$@" >>"$logfile" 2>&1
   local rc=$?
 
@@ -567,12 +573,43 @@ silent() {
     export _SILENT_FAILED_LINE="$caller_line"
     export _SILENT_FAILED_LOG="$logfile"
 
+    # ── Structured error capture (.errinfo) for telemetry ──
+    # Extract exactly THIS command's output (from the recorded byte offset),
+    # strip ANSI/progress noise, keep the last 60 lines. The host builds the
+    # telemetry error trace from this file (pulled from the container on
+    # failure). Self-contained - containers don't source api.func.
+    {
+      local flat_cmd
+      flat_cmd=$(printf '%s' "$cmd" | tr '\n' ' ' | head -c 300)
+      echo "EXIT_CODE=${rc}"
+      echo "LINE=${caller_line}"
+      echo "COMMAND=${flat_cmd}"
+      echo "--- OUTPUT ---"
+      if [[ -s "$logfile" ]]; then
+        local segment
+        segment=$(tail -c +"$((start_bytes + 1))" "$logfile" 2>/dev/null |
+          sed 's/\r$//' |
+          sed 's/\x1b\[[0-9;]*[a-zA-Z]//g' |
+          grep -avE '^(Get:|Hit:|Ign:|Fetched |Reading package lists|Reading state information|Building dependency tree|Selecting previously|Preparing to unpack|Unpacking |Processing triggers for|\(Reading database|[0-9]+%[[:space:]]*\[)' |
+          grep -avE '^[[:space:]]*$' |
+          tail -n 60)
+        # If the noise filter swallowed everything, fall back to the raw tail
+        if [[ -z "$segment" ]]; then
+          segment=$(tail -c +"$((start_bytes + 1))" "$logfile" 2>/dev/null |
+            sed 's/\r$//' | sed 's/\x1b\[[0-9;]*[a-zA-Z]//g' | tail -n 60)
+        fi
+        printf '%s' "$segment" | head -c 10240
+      fi
+    } >"${logfile}.errinfo" 2>/dev/null || true
+
     return "$rc"
   fi
 
   # Clear stale flags on success (prevents false positives if a previous
   # $STD cmd || true failed and a later non-silent command triggers error_handler)
   unset _SILENT_FAILED_RC _SILENT_FAILED_CMD _SILENT_FAILED_LINE _SILENT_FAILED_LOG 2>/dev/null || true
+  # Also drop a stale .errinfo from a previously tolerated failure ($STD cmd || true)
+  rm -f "${logfile}.errinfo" 2>/dev/null || true
 }
 
 # ------------------------------------------------------------------------------

misc/error_handler.func

@@ -7,12 +7,17 @@
 # License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
 # ------------------------------------------------------------------------------
 #
-# Provides comprehensive error handling and signal management for all scripts.
-# Includes:
-#   - Exit code explanations (shell, package managers, databases, custom codes)
-#   - Error handler with detailed logging
-#   - Signal handlers (EXIT, INT, TERM)
-#   - Initialization function for trap setup
+# Provides error handling and signal management for all scripts.
+#
+# TELEMETRY CONTRACT:
+#   - HOST context: this file reports terminal statuses via post_update_to_api
+#     (full metadata + focused error trace).
+#   - CONTAINER context: this file NEVER talks to the telemetry API. It writes
+#     two local artifacts that the host picks up after lxc-attach returns:
+#       /root/.install-<SESSION_ID>.failed        → exit code (flag file)
+#       /root/.install-<SESSION_ID>.log.errinfo   → structured error capture
+#     This guarantees the server only ever sees ONE terminal event per
+#     execution - the host's complete one.
 #
 # Usage:
 #   source <(curl -fsSL .../error_handler.func)
@@ -21,15 +26,14 @@
 # ------------------------------------------------------------------------------
 
 # ==============================================================================
-# SECTION 1: EXIT CODE EXPLANATIONS
+# SECTION 1: EXIT CODE EXPLANATIONS (fallback)
 # ==============================================================================
 
 # ------------------------------------------------------------------------------
 # explain_exit_code()
 #
-# - Canonical version is defined in api.func (sourced before this file)
-# - This section only provides a fallback if api.func was not loaded
-# - See api.func SECTION 1 for the authoritative exit code mappings
+# - Canonical version lives in api.func (sourced before this file on the host)
+# - This fallback covers the container context where api.func is not sourced
 # ------------------------------------------------------------------------------
 if ! declare -f explain_exit_code &>/dev/null; then
   explain_exit_code() {
@@ -94,8 +98,6 @@ if ! declare -f explain_exit_code &>/dev/null; then
     100) echo "APT: Package manager error (broken packages / dependency problems)" ;;
     101) echo "APT: Configuration error (bad sources.list, malformed config)" ;;
     102) echo "APT: Lock held by another process (dpkg/apt still running)" ;;
-
-    # --- Script Validation & Setup (103-123) ---
     103) echo "Validation: Shell is not Bash" ;;
     104) echo "Validation: Not running as root (or invoked via sudo)" ;;
     105) echo "Validation: Proxmox VE version not supported" ;;
@@ -177,9 +179,8 @@ if ! declare -f explain_exit_code &>/dev/null; then
     223) echo "Proxmox: Template not available after download" ;;
     224) echo "Proxmox: PBS storage is for backups only" ;;
     225) echo "Proxmox: No template available for OS/Version" ;;
+    226) echo "Proxmox: VM disk import or post-creation setup failed" ;;
     231) echo "Proxmox: LXC stack upgrade failed" ;;
-
-    # --- Tools & Addon Scripts (232-238) ---
     232) echo "Tools: Wrong execution environment (run on PVE host, not inside LXC)" ;;
     233) echo "Tools: Application not installed (update prerequisite missing)" ;;
     234) echo "Tools: No LXC containers found or available" ;;
@@ -187,7 +188,6 @@ if ! declare -f explain_exit_code &>/dev/null; then
     236) echo "Tools: Required hardware not detected" ;;
     237) echo "Tools: Dependency package installation failed" ;;
     238) echo "Tools: OS or distribution not supported for this addon" ;;
-
     239) echo "npm/Node.js: Unexpected runtime error or dependency failure" ;;
     243) echo "Node.js: Out of memory (JavaScript heap out of memory)" ;;
     245) echo "Node.js: Invalid command-line option" ;;
@@ -195,14 +195,11 @@ if ! declare -f explain_exit_code &>/dev/null; then
     247) echo "Node.js: Fatal internal error" ;;
     248) echo "Node.js: Invalid C++ addon / N-API failure" ;;
     249) echo "npm/pnpm/yarn: Unknown fatal error" ;;
-
-    # --- Application Install/Update Errors (250-254) ---
     250) echo "App: Download failed or version not determined" ;;
     251) echo "App: File extraction failed (corrupt or incomplete archive)" ;;
     252) echo "App: Required file or resource not found" ;;
     253) echo "App: Data migration required — update aborted" ;;
     254) echo "App: User declined prompt or input timed out" ;;
-
     255) echo "DPKG: Fatal internal error" ;;
     *) echo "Unknown error" ;;
     esac
@@ -210,24 +207,98 @@ if ! declare -f explain_exit_code &>/dev/null; then
 fi
 
 # ==============================================================================
-# SECTION 2: ERROR HANDLERS
+# SECTION 2: CONTEXT DETECTION & CONTAINER ARTIFACTS
+# ==============================================================================
+
+# ------------------------------------------------------------------------------
+# _is_container_context()
+#
+# - Returns 0 (true) when running INSIDE the LXC container being installed
+# - TELEMETRY_CONTEXT can override the heuristic ("host" / "container");
+#   install.func sets TELEMETRY_CONTEXT=container during bootstrap
+# ------------------------------------------------------------------------------
+_is_container_context() {
+  case "${TELEMETRY_CONTEXT:-}" in
+  container) return 0 ;;
+  host) return 1 ;;
+  esac
+  # Proxmox/Incus tooling exists only on the host
+  command -v pveversion &>/dev/null && return 1
+  command -v pct &>/dev/null && return 1
+  command -v incus &>/dev/null && return 1
+  # systemd-detect-virt reports lxc inside containers
+  if command -v systemd-detect-virt &>/dev/null; then
+    case "$(systemd-detect-virt -c 2>/dev/null)" in
+    lxc | lxc-libvirt | openvz) return 0 ;;
+    esac
+  fi
+  # PCT_OSTYPE is exported into the install environment by the host
+  [[ -n "${PCT_OSTYPE:-}" ]] && return 0
+  return 1
+}
+
+# ------------------------------------------------------------------------------
+# _container_write_failure()
+#
+# - Writes the failure artifacts inside the container for the host to pick up:
+#   * flag file with the exit code
+#   * .errinfo capture (if silent() has not already written a better one)
+#   * copy of the install log
+# - This REPLACES any direct telemetry send from the container
+# - Arguments: $1 = exit_code, $2 = command (optional), $3 = line (optional)
+# ------------------------------------------------------------------------------
+_container_write_failure() {
+  local exit_code="${1:-1}"
+  local command="${2:-}"
+  local line="${3:-}"
+  local sid="${SESSION_ID:-error}"
+
+  # Flag file with exit code (host reads this after lxc-attach returns)
+  echo "$exit_code" >"/root/.install-${sid}.failed" 2>/dev/null || true
+
+  # Keep the install log where the host expects it
+  if [[ -n "${INSTALL_LOG:-}" && -f "${INSTALL_LOG}" && "${INSTALL_LOG}" != "/root/.install-${sid}.log" ]]; then
+    cp "${INSTALL_LOG}" "/root/.install-${sid}.log" 2>/dev/null || true
+  fi
+
+  # Structured error capture (skip if silent() already wrote the exact
+  # output segment of the failing command - that one is always better).
+  # Self-contained: api.func is NOT sourced inside containers.
+  local errinfo="${INSTALL_LOG:-/root/.install-${sid}.log}.errinfo"
+  if [[ ! -s "$errinfo" ]]; then
+    local flat_cmd
+    flat_cmd=$(printf '%s' "${command:-unknown}" | tr '\n' ' ' | head -c 300)
+    {
+      echo "EXIT_CODE=${exit_code}"
+      echo "LINE=${line:-0}"
+      echo "COMMAND=${flat_cmd}"
+      echo "--- OUTPUT ---"
+      if [[ -n "${INSTALL_LOG:-}" && -s "${INSTALL_LOG}" ]]; then
+        tail -n 80 "${INSTALL_LOG}" 2>/dev/null |
+          sed 's/\r$//' |
+          sed 's/\x1b\[[0-9;]*[a-zA-Z]//g' |
+          grep -avE '^(Get:|Hit:|Ign:|Fetched |Reading package lists|Reading state information|Building dependency tree|Selecting previously|Preparing to unpack|Unpacking |Processing triggers for|\(Reading database|[0-9]+%[[:space:]]*\[)' |
+          grep -avE '^[[:space:]]*$' |
+          tail -n 60 | head -c 10240
+      fi
+    } >"$errinfo" 2>/dev/null || true
+  fi
+}
+
+# ==============================================================================
+# SECTION 3: ERROR HANDLER
 # ==============================================================================
 
 # ------------------------------------------------------------------------------
 # error_handler()
 #
 # - Main error handler triggered by ERR trap
-# - Arguments: exit_code, command, line_number
-# - Behavior:
-#   * Returns silently if exit_code is 0 (success)
-#   * Sources explain_exit_code() for detailed error description
-#   * Displays error message with:
-#     - Line number where error occurred
-#     - Exit code with explanation
-#     - Command that failed
-#   * Shows last 20 lines of SILENT_LOGFILE if available
-#   * Copies log to container /root for later inspection
-#   * Exits with original exit code
+# - Displays error message with line number, exit code, explanation, command
+# - Shows last 20 lines of the active log
+# - Emits actionable hints for common failure patterns (OOM, APT, network...)
+# - HOST: reports "failed" to telemetry (full payload via api.func)
+# - CONTAINER: writes failure artifacts, sends nothing
+# - Exits with original exit code
 # ------------------------------------------------------------------------------
 error_handler() {
   local exit_code=${1:-$?}
@@ -237,12 +308,10 @@ error_handler() {
   command="${command//\$STD/}"
 
   # If error originated from silent(), use its captured metadata
-  # This provides the actual command and line number instead of "silent ..."
   if [[ -n "${_SILENT_FAILED_RC:-}" ]]; then
     exit_code="$_SILENT_FAILED_RC"
     command="$_SILENT_FAILED_CMD"
     line_number="$_SILENT_FAILED_LINE"
-    # Clear flags to prevent stale data on subsequent errors
     unset _SILENT_FAILED_RC _SILENT_FAILED_CMD _SILENT_FAILED_LINE
   fi
 
@@ -250,8 +319,12 @@ error_handler() {
     return 0
   fi
 
-  # Stop spinner and restore cursor FIRST — before any output
-  # This prevents spinner text overlapping with error messages
+  # Export the failure location so telemetry can include the "where"
+  FAILED_COMMAND="$command"
+  FAILED_LINE="$line_number"
+  export FAILED_COMMAND FAILED_LINE
+
+  # Stop spinner and restore cursor FIRST - before any output
   if declare -f stop_spinner >/dev/null 2>&1; then
     stop_spinner 2>/dev/null || true
   fi
@@ -259,18 +332,18 @@ error_handler() {
 
   local explanation
   explanation="$(explain_exit_code "$exit_code")"
-
-  # ALWAYS report failure to API immediately - don't wait for container checks
-  # This ensures we capture failures that occur before/after container exists
-  if declare -f post_update_to_api &>/dev/null; then
-    post_update_to_api "failed" "$exit_code" 2>/dev/null || true
-  else
-    # Container context: post_update_to_api not available (api.func not sourced)
-    # Send status directly via curl so container failures are never lost
-    _send_abort_telemetry "$exit_code" 2>/dev/null || true
+  if [[ "$explanation" == curl:* && ! "$command" =~ (^|[[:space:]])([^[:space:]]*/)?curl([[:space:]]|$) ]]; then
+    explanation="Command failed with exit status ${exit_code}"
   fi
 
-  # Use msg_error if available, fallback to echo
+  # ── Telemetry / failure artifacts ──
+  if _is_container_context; then
+    _container_write_failure "$exit_code" "$command" "$line_number"
+  elif declare -f post_update_to_api &>/dev/null; then
+    post_update_to_api "failed" "$exit_code" 2>/dev/null || true
+  fi
+
+  # ── Display ──
   if declare -f msg_error >/dev/null 2>&1; then
     msg_error "in line ${line_number}: exit code ${exit_code} (${explanation}): while executing command ${command}"
   else
@@ -288,8 +361,7 @@ error_handler() {
     } >>"$DEBUG_LOGFILE"
   fi
 
-  # Get active log file (BUILD_LOG or INSTALL_LOG)
-  # Prefer silent()'s logfile when available (contains the actual command output)
+  # Get active log file (prefer silent()'s logfile when available)
   local active_log=""
   if [[ -n "${_SILENT_FAILED_LOG:-}" && -s "${_SILENT_FAILED_LOG}" ]]; then
     active_log="$_SILENT_FAILED_LOG"
@@ -300,21 +372,17 @@ error_handler() {
     active_log="$SILENT_LOGFILE"
   fi
 
-  # If active_log points to a container-internal path that doesn't exist on host,
-  # fall back to BUILD_LOG (host-side log)
   if [[ -n "$active_log" && ! -s "$active_log" && -n "${BUILD_LOG:-}" && -s "${BUILD_LOG}" ]]; then
     active_log="$BUILD_LOG"
   fi
 
-  # Show last log lines if available
   if [[ -n "$active_log" && -s "$active_log" ]]; then
     echo -e "\n${TAB}--- Last 20 lines of log ---"
     tail -n 20 "$active_log"
     echo -e "${TAB}-----------------------------------\n"
   fi
 
-  # Detect probable Node.js heap OOM and print actionable guidance.
-  # This avoids generic SIGABRT/SIGKILL confusion for frontend build failures.
+  # ── Node.js heap OOM detection with actionable guidance ──
   local node_oom_detected="false"
   local node_build_context="false"
   if [[ "$command" =~ (npm|pnpm|yarn|node|vite|turbo) ]]; then
@@ -331,7 +399,6 @@ error_handler() {
   if [[ "$node_oom_detected" == "true" ]] || { [[ "$node_build_context" == "true" ]] && [[ "$exit_code" =~ ^(134|137)$ ]]; }; then
     local heap_hint_mb=""
 
-    # If explicitly configured, prefer the current value for troubleshooting output.
     if [[ -n "${NODE_OPTIONS:-}" ]] && [[ "${NODE_OPTIONS}" =~ max-old-space-size=([0-9]+) ]]; then
       heap_hint_mb="${BASH_REMATCH[1]}"
     elif [[ -n "${var_ram:-}" ]] && [[ "${var_ram}" =~ ^[0-9]+$ ]]; then
@@ -358,14 +425,13 @@ error_handler() {
     fi
   fi
 
-  # ── Log-pattern analysis: detect common failure causes and emit actionable hints ──
+  # ── Log-pattern analysis: actionable hints for common failure causes ──
   if [[ -n "$active_log" && -s "$active_log" ]]; then
     local _log_tail
     _log_tail=$(tail -n 60 "$active_log" 2>/dev/null || true)
 
     # 1. APT/dpkg dependency conflict
     if echo "$_log_tail" | grep -qE "Depends:|depends on.*but.*not installed|broken packages|unmet dep|dependency problems"; then
-      # Check for PostgreSQL-specific version mismatch (most actionable)
       local _pg_conflict
       _pg_conflict=$(echo "$_log_tail" | grep -oE 'postgresql-[0-9]+ but.*installed' | head -1 || true)
       if [[ -n "$_pg_conflict" ]]; then
@@ -386,7 +452,7 @@ error_handler() {
         msg_warn "Hint: A repository GPG key may be missing, expired, or the keyring file is not yet present (/usr/share/postgresql-common/pgdg/apt.postgresql.org.asc etc.)."
         msg_warn "Hint: Install the 'postgresql-common' package first, or re-add the repository with its correct signing key."
       fi
-    # 3. Network / DNS failure during apt-get or curl
+    # 3. Network / DNS failure
     elif echo "$_log_tail" | grep -qE "Could not resolve|Failed to fetch|Unable to connect|Name or service not known|Network is unreachable|curl.*resolve"; then
       if declare -f msg_warn >/dev/null 2>&1; then
         msg_warn "Network or DNS failure detected."
@@ -407,17 +473,12 @@ error_handler() {
     fi
   fi
 
-  # Detect context: Container (INSTALL_LOG set + inside container /root) vs Host
-  if [[ -n "${INSTALL_LOG:-}" && -f "${INSTALL_LOG:-}" && -d /root ]]; then
-    # CONTAINER CONTEXT: Copy log and create flag file for host
-    local container_log="/root/.install-${SESSION_ID:-error}.log"
-    cp "${INSTALL_LOG}" "$container_log" 2>/dev/null || true
-
-    # Create error flag file with exit code for host detection
-    echo "$exit_code" >"/root/.install-${SESSION_ID:-error}.failed" 2>/dev/null || true
-    # Log path is shown by host as combined log - no need to show container path
+  # ── Context-specific cleanup ──
+  if _is_container_context; then
+    # Container: artifacts already written above; nothing more to do
+    :
   else
-    # HOST CONTEXT: Show local log path and offer container cleanup
+    # HOST: show log path and offer container cleanup
     if [[ -n "$active_log" && -s "$active_log" ]]; then
       if declare -f msg_custom >/dev/null 2>&1; then
         msg_custom "📋" "${YW}" "Full log: ${active_log}"
@@ -435,7 +496,6 @@ error_handler() {
         echo -en "${YW}Remove broken container ${CTID}? (Y/n) [auto-remove in 60s]: ${CL}"
       fi
 
-      # Read user response
       local response=""
       if read -t 60 -r response; then
         if [[ -z "$response" || "$response" =~ ^[Yy]$ ]]; then
@@ -476,12 +536,6 @@ error_handler() {
           echo -e "${GN}✔${CL} Container ${CTID} removed"
         fi
       fi
-
-      # Force one final status update attempt after cleanup
-      # This ensures status is updated even if the first attempt failed (e.g., HTTP 400)
-      if declare -f post_update_to_api &>/dev/null; then
-        post_update_to_api "failed" "$exit_code" "force"
-      fi
     fi
   fi
 
@@ -489,106 +543,33 @@ error_handler() {
 }
 
 # ==============================================================================
-# SECTION 3: TELEMETRY & CLEANUP HELPERS FOR SIGNAL HANDLERS
+# SECTION 4: TELEMETRY & CLEANUP HELPERS FOR SIGNAL HANDLERS
 # ==============================================================================
 
 # ------------------------------------------------------------------------------
-# _send_abort_telemetry()
+# _send_abort_telemetry()  (compatibility name)
 #
-# - Sends failure/abort status to telemetry API
-# - Works in BOTH host context (post_update_to_api available) and
-#   container context (only curl available, api.func not sourced)
-# - Container context is critical: without this, container-side failures
-#   and signal exits are never reported, leaving records stuck in
-#   "installing" or "configuring" forever
+# - HOST: reports via post_update_to_api (signals map to "aborted" there)
+# - CONTAINER: writes failure artifacts instead of sending anything
 # - Arguments: $1 = exit_code
 # ------------------------------------------------------------------------------
 _send_abort_telemetry() {
   local exit_code="${1:-1}"
-  # Try full API function first (host context - api.func sourced)
+  if _is_container_context; then
+    _container_write_failure "$exit_code"
+    return 0
+  fi
   if declare -f post_update_to_api &>/dev/null; then
     post_update_to_api "failed" "$exit_code" 2>/dev/null || true
-    return
   fi
-  # Fallback: direct curl (container context - api.func NOT sourced)
-  # This is the ONLY way containers can report failures to telemetry
-  command -v curl &>/dev/null || return 0
-  [[ "${DIAGNOSTICS:-no}" == "no" ]] && return 0
-  [[ -z "${RANDOM_UUID:-}" ]] && return 0
-
-  # Collect last 200 log lines for error diagnosis (best-effort)
-  # Container context has no get_full_log(), so we gather as much as possible
-  local error_text=""
-  local logfile=""
-  if [[ -n "${INSTALL_LOG:-}" && -s "${INSTALL_LOG}" ]]; then
-    logfile="${INSTALL_LOG}"
-  elif [[ -n "${SILENT_LOGFILE:-}" && -s "${SILENT_LOGFILE}" ]]; then
-    logfile="${SILENT_LOGFILE}"
-  fi
-
-  if [[ -n "$logfile" ]]; then
-    error_text=$(tail -n 200 "$logfile" 2>/dev/null | sed 's/\x1b\[[0-9;]*[a-zA-Z]//g; s/\\/\\\\/g; s/"/\\"/g; s/\r//g' | tr '\n' '|' | sed 's/|$//' | head -c 16384 | tr -d '\000-\010\013\014\016-\037\177') || true
-  fi
-
-  # Prepend exit code explanation header (like build_error_string does on host)
-  local explanation=""
-  if declare -f explain_exit_code &>/dev/null; then
-    explanation=$(explain_exit_code "$exit_code" 2>/dev/null) || true
-  fi
-  if [[ -n "$explanation" && -n "$error_text" ]]; then
-    error_text="exit_code=${exit_code} | ${explanation}|---|${error_text}"
-  elif [[ -n "$explanation" && -z "$error_text" ]]; then
-    error_text="exit_code=${exit_code} | ${explanation}"
-  fi
-
-  # Calculate duration if start time is available
-  local duration=""
-  if [[ -n "${DIAGNOSTICS_START_TIME:-}" ]]; then
-    duration=$(($(date +%s) - DIAGNOSTICS_START_TIME))
-  fi
-
-  # Categorize error if function is available (may not be in minimal container context)
-  local error_category=""
-  if declare -f categorize_error &>/dev/null; then
-    error_category=$(categorize_error "$exit_code" 2>/dev/null) || true
-  fi
-
-  # Build JSON payload with error context
-  local payload
-  payload="{\"random_id\":\"${RANDOM_UUID}\",\"execution_id\":\"${EXECUTION_ID:-${RANDOM_UUID}}\",\"type\":\"${TELEMETRY_TYPE:-lxc}\",\"nsapp\":\"${NSAPP:-${app:-unknown}}\",\"status\":\"failed\",\"exit_code\":${exit_code}"
-  [[ -n "$error_text" ]] && payload="${payload},\"error\":\"${error_text}\""
-  [[ -n "$error_category" ]] && payload="${payload},\"error_category\":\"${error_category}\""
-  [[ -n "$duration" ]] && payload="${payload},\"duration\":${duration}"
-  payload="${payload}}"
-
-  local api_url="${TELEMETRY_URL:-https://telemetry.community-scripts.org/telemetry}"
-
-  # 2 attempts (retry once on failure) — original had no retry
-  local attempt
-  for attempt in 1 2; do
-    if curl -fsS -m 5 -X POST "$api_url" \
-      -H "Content-Type: application/json" \
-      -d "$payload" &>/dev/null; then
-      return 0
-    fi
-    [[ $attempt -eq 1 ]] && sleep 1
-  done
   return 0
 }
 
 # ------------------------------------------------------------------------------
 # _stop_container_if_installing()
 #
-# - Stops the LXC container if we're in the install phase
+# - Stops the LXC container if we're in the install phase (host only)
 # - Prevents orphaned container processes when the host exits due to a signal
-#   (SSH disconnect, Ctrl+C, SIGTERM) — without this, the container keeps
-#   running and may send "configuring" status AFTER the host already sent
-#   "failed", leaving records permanently stuck in "configuring"
-# - Only acts when:
-#   * CONTAINER_INSTALLING flag is set (during lxc-attach in build_container)
-#   * CTID is set (container was created)
-#   * pct command is available (we're on the Proxmox host, not inside a container)
-# - Does NOT destroy the container — just stops it for potential debugging
 # ------------------------------------------------------------------------------
 _stop_container_if_installing() {
   [[ "${CONTAINER_INSTALLING:-}" == "true" ]] || return 0
@@ -598,51 +579,47 @@ _stop_container_if_installing() {
 }
 
 # ==============================================================================
-# SECTION 4: SIGNAL HANDLERS
+# SECTION 5: SIGNAL HANDLERS
 # ==============================================================================
 
 # ------------------------------------------------------------------------------
 # on_exit()
 #
 # - EXIT trap handler — runs on EVERY script termination
-# - Catches orphaned "installing"/"configuring" records:
-#   * If post_to_api sent "installing" but post_update_to_api never ran
-#   * Reports final status to prevent records stuck forever
-# - Best-effort log collection for failed installs
-# - Stops orphaned container processes on failure
-# - Cleans up lock files
+# - CONTAINER: ensures failure artifacts exist on non-zero exit (this also
+#   covers silent()'s direct `exit $rc`, which bypasses the ERR trap)
+# - HOST: catches executions that never sent a final status:
+#   * non-zero exit → "failed" (signal codes map to "aborted")
+#   * zero exit with an "installing" record but no final → "aborted"
+#     (e.g. user cancelled a whiptail dialog, script exited cleanly)
 # ------------------------------------------------------------------------------
 on_exit() {
   local exit_code=$?
 
-  # Report orphaned telemetry records
-  # Two scenarios handled:
-  # 1. POST_TO_API_DONE=true but POST_UPDATE_DONE=false: Record was created but
-  #    never got a final status update → send abort/done now.
-  # 2. POST_TO_API_DONE=false but DIAGNOSTICS=yes: Initial post failed (server
-  #    unreachable/timeout), but the server has fallback create-on-update logic,
-  #    so a status update can still create the record. Worth one last try.
-  if [[ "${POST_UPDATE_DONE:-}" != "true" ]]; then
-    if [[ "${POST_TO_API_DONE:-}" == "true" || "${DIAGNOSTICS:-no}" == "yes" ]]; then
+  if _is_container_context; then
+    if [[ $exit_code -ne 0 ]]; then
+      _container_write_failure "$exit_code" "${FAILED_COMMAND:-}" "${FAILED_LINE:-}"
+    fi
+  else
+    if [[ "${POST_UPDATE_DONE:-}" != "true" ]] && declare -f post_update_to_api >/dev/null 2>&1; then
       if [[ $exit_code -ne 0 ]]; then
-        _send_abort_telemetry "$exit_code"
-      elif [[ "${INSTALL_COMPLETE:-}" == "true" ]] && declare -f post_update_to_api >/dev/null 2>&1; then
-        # Only report success if the install was explicitly marked complete.
-        # Without this guard, early bailouts (e.g. user cancelled) with exit 0
-        # would be falsely reported as successful installations.
-        post_update_to_api "done" "0" 2>/dev/null || true
+        post_update_to_api "failed" "$exit_code" 2>/dev/null || true
+      elif [[ "${POST_TO_API_DONE:-}" == "true" ]]; then
+        # Clean exit but no success was ever reported: the user backed out
+        # somewhere. Report as aborted so the record doesn't stay "installing".
+        post_update_to_api "aborted" "0" 2>/dev/null || true
       fi
     fi
-  fi
 
-  # Best-effort log collection on failure (non-critical, telemetry already sent)
-  if [[ $exit_code -ne 0 ]] && declare -f ensure_log_on_host >/dev/null 2>&1; then
-    ensure_log_on_host 2>/dev/null || true
-  fi
+    # Best-effort log collection on failure
+    if [[ $exit_code -ne 0 ]] && declare -f ensure_log_on_host >/dev/null 2>&1; then
+      ensure_log_on_host 2>/dev/null || true
+    fi
 
-  # Stop orphaned container if we're in the install phase and exiting with error
-  if [[ $exit_code -ne 0 ]]; then
-    _stop_container_if_installing
+    # Stop orphaned container if we're in the install phase
+    if [[ $exit_code -ne 0 ]]; then
+      _stop_container_if_installing
+    fi
   fi
 
   [[ -n "${lockfile:-}" && -e "$lockfile" ]] && rm -f "$lockfile"
@@ -650,21 +627,19 @@ on_exit() {
 }
 
 # ------------------------------------------------------------------------------
-# on_interrupt()
-#
-# - SIGINT (Ctrl+C) trap handler
-# - Reports status FIRST (time-critical: container may be dying)
-# - Stops orphaned container to prevent "configuring" ghost records
-# - Exits with code 130 (128 + SIGINT=2)
+# on_interrupt() - SIGINT (Ctrl+C)
 # ------------------------------------------------------------------------------
 on_interrupt() {
-  # Stop spinner and restore cursor before any output
   if declare -f stop_spinner >/dev/null 2>&1; then
     stop_spinner 2>/dev/null || true
   fi
   printf "\e[?25h" 2>/dev/null || true
 
-  _send_abort_telemetry "130"
+  if _is_container_context; then
+    _container_write_failure "130"
+  elif declare -f post_update_to_api &>/dev/null; then
+    post_update_to_api "aborted" "130" 2>/dev/null || true
+  fi
   _stop_container_if_installing
   if declare -f msg_error >/dev/null 2>&1; then
     msg_error "Interrupted by user (SIGINT)" 2>/dev/null || true
@@ -675,21 +650,19 @@ on_interrupt() {
 }
 
 # ------------------------------------------------------------------------------
-# on_terminate()
-#
-# - SIGTERM trap handler
-# - Reports status FIRST (time-critical: process being killed)
-# - Stops orphaned container to prevent "configuring" ghost records
-# - Exits with code 143 (128 + SIGTERM=15)
+# on_terminate() - SIGTERM
 # ------------------------------------------------------------------------------
 on_terminate() {
-  # Stop spinner and restore cursor before any output
   if declare -f stop_spinner >/dev/null 2>&1; then
     stop_spinner 2>/dev/null || true
   fi
   printf "\e[?25h" 2>/dev/null || true
 
-  _send_abort_telemetry "143"
+  if _is_container_context; then
+    _container_write_failure "143"
+  elif declare -f post_update_to_api &>/dev/null; then
+    post_update_to_api "aborted" "143" 2>/dev/null || true
+  fi
   _stop_container_if_installing
   if declare -f msg_error >/dev/null 2>&1; then
     msg_error "Terminated by signal (SIGTERM)" 2>/dev/null || true
@@ -700,45 +673,32 @@ on_terminate() {
 }
 
 # ------------------------------------------------------------------------------
-# on_hangup()
-#
-# - SIGHUP trap handler (SSH disconnect, terminal closed)
-# - CRITICAL: This was previously MISSING from catch_errors(), causing
-#   container processes to become orphans on SSH disconnect — the #1 cause
-#   of records stuck in "installing" and "configuring" states
-# - Reports status via direct curl (terminal is already closed, no output)
-# - Stops orphaned container to prevent ghost records
-# - Exits with code 129 (128 + SIGHUP=1)
+# on_hangup() - SIGHUP (SSH disconnect, terminal closed)
 # ------------------------------------------------------------------------------
 on_hangup() {
-  # Stop spinner (no cursor restore needed — terminal is already gone)
   if declare -f stop_spinner >/dev/null 2>&1; then
     stop_spinner 2>/dev/null || true
   fi
 
-  _send_abort_telemetry "129"
+  if _is_container_context; then
+    _container_write_failure "129"
+  elif declare -f post_update_to_api &>/dev/null; then
+    post_update_to_api "aborted" "129" 2>/dev/null || true
+  fi
   _stop_container_if_installing
   exit 129
 }
 
 # ==============================================================================
-# SECTION 5: INITIALIZATION
+# SECTION 6: INITIALIZATION
 # ==============================================================================
 
 # ------------------------------------------------------------------------------
 # catch_errors()
 #
 # - Initializes error handling and signal traps
-# - Enables strict error handling:
-#   * set -Ee: Exit on error, inherit ERR trap in functions
-#   * set -o pipefail: Pipeline fails if any command fails
-#   * set -u: (optional) Exit on undefined variable (if STRICT_UNSET=1)
-# - Sets up traps:
-#   * ERR  → error_handler (script errors)
-#   * EXIT → on_exit      (any termination — cleanup + orphan detection)
-#   * INT  → on_interrupt  (Ctrl+C)
-#   * TERM → on_terminate  (kill / systemd stop)
-#   * HUP  → on_hangup     (SSH disconnect / terminal closed)
+# - set -Ee -o pipefail (+ set -u when STRICT_UNSET=1)
+# - Traps: ERR → error_handler, EXIT → on_exit, INT/TERM/HUP → signal handlers
 # - Call this function early in every script
 # ------------------------------------------------------------------------------
 catch_errors() {

misc/install.func

@@ -32,6 +32,11 @@ if ! command -v curl >/dev/null 2>&1; then
   apt update >/dev/null 2>&1
   apt install -y curl >/dev/null 2>&1
 fi
+# Mark container context BEFORE error handling starts: error_handler/on_exit
+# must write local failure artifacts instead of talking to the telemetry API
+# (the host is the single telemetry reporter).
+export TELEMETRY_CONTEXT="container"
+
 source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/core.func)
 source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/error_handler.func)
 load_functions
@@ -65,9 +70,12 @@ post_progress_to_api() {
 
   local progress_status="${1:-configuring}"
 
+  # Progress pings are the ONLY telemetry a container sends (terminal statuses
+  # are reported by the host). Include execution_id + platform + repo
+  # attribution (exported by the host) so the server can correlate and filter.
   curl -fsS -m 5 -X POST "https://telemetry.community-scripts.org/telemetry" \
     -H "Content-Type: application/json" \
-    -d "{\"random_id\":\"${RANDOM_UUID}\",\"execution_id\":\"${EXECUTION_ID:-${RANDOM_UUID}}\",\"type\":\"lxc\",\"nsapp\":\"${app:-unknown}\",\"status\":\"${progress_status}\"}" &>/dev/null || true
+    -d "{\"random_id\":\"${RANDOM_UUID}\",\"execution_id\":\"${EXECUTION_ID:-${RANDOM_UUID}}\",\"type\":\"lxc\",\"nsapp\":\"${app:-unknown}\",\"status\":\"${progress_status}\",\"platform\":\"${TELEMETRY_PLATFORM:-}\",\"repo_source\":\"${REPO_SOURCE:-}\",\"repo_slug\":\"${REPO_SLUG:-}\"}" &>/dev/null || true
 }
 
 # ==============================================================================

misc/vm-core.func

@@ -573,8 +573,10 @@ cleanup() {
       if [[ $exit_code -ne 0 ]]; then
         post_update_to_api "failed" "$exit_code"
       else
-        # Exited cleanly but description()/success was never called — shouldn't happen
-        post_update_to_api "failed" "1"
+        # Exited cleanly but description()/success was never called: the user
+        # backed out of a dialog. Report as aborted - NOT "failed 1" (which
+        # produced meaningless 'General error' records with no error text).
+        post_update_to_api "aborted" "0"
       fi
     fi
   fi