fix: replace generic exit 1 with specific exit codes in ct/ and install/ scripts (#12475)

Part of #12467 — scripts only (no framework changes).

New exit codes 250-254 registered in api.func and error_handler.func:
- 250: App download failed or version not determined
- 251: App file extraction failed (corrupt/incomplete archive)
- 252: App required file or resource not found
- 253: App data migration required — update aborted
- 254: App user declined prompt or input timed out

Existing codes reused where applicable:
- 10: privileged/Docker required (unifi-os-server)
- 64: invalid user input (postgresql, tomcat)
- 71: system error (pulse useradd)
- 150: service failed to start (docker, npmplus)
- 153: build failed (booklore)
- 233: app not installed (evcc, endurain, grafana, loki, itsm-ng)
- 236: hardware not detected (unifi-os-server /dev/net/tun)
- 238: OS not supported (frigate)

ct/alpine-komodo.sh

@@ -39,7 +39,7 @@ function update_script() {
     COMPOSE_FILE=$(find /opt/komodo -maxdepth 1 -type f -name '*.compose.yaml' ! -name 'compose.env' | head -n1)
     if [[ -z "$COMPOSE_FILE" ]]; then
       msg_error "No valid compose file found in /opt/komodo!"
-      exit 1
+      exit 252
     fi
     $STD docker compose -p komodo -f "$COMPOSE_FILE" --env-file /opt/komodo/compose.env pull
     $STD docker compose -p komodo -f "$COMPOSE_FILE" --env-file /opt/komodo/compose.env up -d

ct/endurain.sh

@@ -26,7 +26,7 @@ function update_script() {
 
   if [[ ! -d /opt/endurain ]]; then
     msg_error "No ${APP} installation found!"
-    exit 1
+    exit 233
   fi
   if check_for_gh_release "endurain" "endurain-project/endurain"; then
     msg_info "Stopping Service"

ct/evcc.sh

@@ -25,7 +25,7 @@ function update_script() {
   check_container_resources
   if ! command -v evcc >/dev/null 2>&1; then
     msg_error "No ${APP} Installation Found!"
-    exit 1
+    exit 233
   fi
 
   if [[ -f /etc/apt/sources.list.d/evcc-stable.list ]]; then

ct/grafana.sh

@@ -26,7 +26,7 @@ function update_script() {
 
   if ! dpkg -s grafana >/dev/null 2>&1; then
     msg_error "No ${APP} Installation Found!"
-    exit 1
+    exit 233
   fi
 
   if [[ -f /etc/apt/sources.list.d/grafana.list ]] || [[ ! -f /etc/apt/sources.list.d/grafana.sources ]]; then

ct/itsm-ng.sh

@@ -26,7 +26,7 @@ function update_script() {
 
   if [[ ! -f /etc/itsm-ng/config_db.php ]]; then
     msg_error "No ${APP} Installation Found!"
-    exit 1
+    exit 233
   fi
   setup_mariadb
 

ct/kasm.sh

@@ -45,7 +45,7 @@ function update_script() {
   
   if [[ -z "$KASM_URL" ]] || [[ -z "$KASM_VERSION" ]]; then
     msg_error "Unable to detect latest Kasm release URL."
-    exit 1
+    exit 250
   fi
   msg_info "Checked for new version"
 

ct/komodo.sh

@@ -43,7 +43,7 @@ function update_script() {
     COMPOSE_FILE=$(find /opt/komodo -maxdepth 1 -type f -name '*.compose.yaml' ! -name 'compose.env' | head -n1)
     if [[ -z "$COMPOSE_FILE" ]]; then
       msg_error "No valid compose file found in /opt/komodo!"
-      exit 1
+      exit 252
     fi
     $STD docker compose -p komodo -f "$COMPOSE_FILE" --env-file /opt/komodo/compose.env pull
     $STD docker compose -p komodo -f "$COMPOSE_FILE" --env-file /opt/komodo/compose.env up -d

ct/loki.sh

@@ -26,7 +26,7 @@ function update_script() {
 
   if ! dpkg -s loki >/dev/null 2>&1; then
     msg_error "No ${APP} Installation Found!"
-    exit 1
+    exit 233
   fi
 
   CHOICE=$(msg_menu "Loki Update Options" \

ct/paperless-ngx.sh

@@ -44,7 +44,7 @@ function update_script() {
       echo -e "${TAB}${GATEWAY}${BGN}https://github.com/community-scripts/ProxmoxVE/discussions/9223${CL}"
       echo -e ""
       msg_custom "⚠️" "Update aborted. Please migrate your data first."
-      exit 1
+      exit 253
     fi
   fi
 

ct/vikunja.sh

@@ -34,14 +34,14 @@ function update_script() {
     msg_warn "This requires MANUAL config changes in /etc/vikunja/config.yml."
     msg_warn "See: https://vikunja.io/changelog/whats-new-in-vikunja-1.0.0/#config-changes"
 
-    read -rp "Continue with update? (y to proceed): " -t 30 CONFIRM1 || exit 1
+    read -rp "Continue with update? (y to proceed): " -t 30 CONFIRM1 || exit 254
     [[ "$CONFIRM1" =~ ^[yY]$ ]] || exit 0
 
     echo
     msg_warn "Vikunja may not start after the update until you manually adjust the config."
     msg_warn "Details: https://vikunja.io/changelog/whats-new-in-vikunja-1.0.0/#config-changes"
 
-    read -rp "Acknowledge and continue? (y): " -t 30 CONFIRM2 || exit 1
+    read -rp "Acknowledge and continue? (y): " -t 30 CONFIRM2 || exit 254
     [[ "$CONFIRM2" =~ ^[yY]$ ]] || exit 0
   fi