InvenTree: move to go.packager.io

dl.packager.io is frozen at 1.5.1, and its key only has a SHA1 self-signature, which apt's sqv rejects on Debian 13 since 2026-02-01. Upstream's installer moved to go.packager.io (InvenTree #12824), which carries 1.6.0 for Ubuntu 24.04/26.04 and Debian 13; update migrates installs on those releases and accepts Debian.

ct/inventree.sh

@@ -31,11 +31,31 @@ function update_script() {
     exit
   fi
 
-  if ! grep -qE "^ID=(ubuntu)$" /etc/os-release; then
-    msg_error "Unsupported OS. InvenTree requires Ubuntu (20.04/22.04/24.04)."
+  if ! grep -qE "^ID=(ubuntu|debian)$" /etc/os-release; then
+    msg_error "Unsupported OS. InvenTree requires Ubuntu or Debian."
     exit
   fi
 
+  # dl.packager.io is frozen at 1.5.1 and its SHA1-bound key fails on Debian 13;
+  # go.packager.io only carries current builds for these releases
+  if grep -qs "dl.packager.io" /etc/apt/sources.list.d/inventree*; then
+    case "$(get_os_info id)/$(get_os_info version)" in
+    ubuntu/24.04 | ubuntu/26.04 | debian/13)
+      msg_info "Migrating InvenTree Repository"
+      setup_deb822_repo \
+        "inventree" \
+        "https://go.packager.io/srv/deb/inventree/InvenTree/gpg-key.asc" \
+        "https://go.packager.io/srv/deb/inventree/InvenTree/stable/$(get_os_info id)" \
+        "$(get_os_info version)" \
+        "main"
+      msg_ok "Migrated InvenTree Repository"
+      ;;
+    *)
+      msg_warn "InvenTree only publishes updates for Ubuntu 24.04/26.04 and Debian 13; staying on the frozen repository"
+      ;;
+    esac
+  fi
+
   msg_info "Updating InvenTree"
   apt_update_safe
   $STD apt install --only-upgrade inventree -y

install/inventree-install.sh

@@ -16,8 +16,8 @@ update_os
 msg_info "Setting up InvenTree Repository"
 setup_deb822_repo \
   "inventree" \
-  "https://dl.packager.io/srv/inventree/InvenTree/key" \
-  "https://dl.packager.io/srv/deb/inventree/InvenTree/stable/$(get_os_info id)" \
+  "https://go.packager.io/srv/deb/inventree/InvenTree/gpg-key.asc" \
+  "https://go.packager.io/srv/deb/inventree/InvenTree/stable/$(get_os_info id)" \
   "$(get_os_info version)" \
   "main"
 msg_ok "Set up InvenTree Repository"