Add stack Update, ComfyUI model manager, and slim ComfyUI stack.

Server UI gains Update on stack cards, ComfyUI Models tab with workflow
scan and downloads, and centralized comfyui_config. Model catalog and
download scripts move from stacks/comfyui to server-ui so ComfyUI stays a
minimal Docker wrapper for easier image updates.

stacks/server-ui/scripts/print-api-key-instructions.sh

@@ -2,17 +2,34 @@
 # Print API key + browser instructions (shared by install scripts and show-api-key.sh).
 set -euo pipefail
 
-print_api_key_instructions() {
-  local env_file="${1:-/opt/control-plane/.env}"
-  local ui_port="${2:-8091}"
+_read_api_key() {
+  local env_file="$1"
   local api_key=""
-  local lan_ip=""
-
   if [[ -r "${env_file}" ]]; then
     api_key="$(grep '^API_KEY=' "${env_file}" 2>/dev/null | cut -d= -f2- || true)"
   elif [[ -f "${env_file}" ]]; then
     api_key="$(sudo grep '^API_KEY=' "${env_file}" 2>/dev/null | cut -d= -f2- || true)"
   fi
+  if [[ -z "${api_key}" ]]; then
+    local pid
+    pid="$(pgrep -f '/opt/server-ui/app.py' 2>/dev/null | head -1 || true)"
+    if [[ -n "${pid}" && -r "/proc/${pid}/environ" ]]; then
+      api_key="$(tr '\0' '\n' < "/proc/${pid}/environ" 2>/dev/null | grep '^API_KEY=' | cut -d= -f2- || true)"
+    fi
+  fi
+  printf '%s' "${api_key}"
+}
+
+print_api_key_instructions() {
+  local env_file="${1:-/opt/control-plane/.env}"
+  local ui_port="${2:-8091}"
+  local dev_env="${3:-}"
+  local api_key=""
+  local dev_key=""
+  local lan_ip=""
+  local verify_ok=0
+
+  api_key="$(_read_api_key "${env_file}")"
 
   lan_ip="$(hostname -I 2>/dev/null | awk '{print $1}')"
   [[ -n "${lan_ip}" ]] || lan_ip="<IP-serwera>"
@@ -30,6 +47,33 @@ print_api_key_instructions() {
     return 1
   fi
 
+  if [[ -n "${dev_env}" && -f "${dev_env}" ]]; then
+    dev_key="$(_read_api_key "${dev_env}")"
+    if [[ -n "${dev_key}" && "${dev_key}" != "${api_key}" ]]; then
+      echo "OSTRZEŻENIE: klucz dev różni się od produkcji!"
+      echo "  prod: ${env_file}"
+      echo "  dev:  ${dev_env}"
+      echo "  Napraw: sudo bash stacks/server-ui/scripts/setup-control-plane-env.sh"
+      echo ""
+    fi
+  fi
+
+  if curl -sf -X POST "http://127.0.0.1:${ui_port}/api/auth/verify" \
+    -H "Content-Type: application/json" \
+    -d "{\"api_key\":\"${api_key}\"}" >/dev/null 2>&1; then
+    verify_ok=1
+  fi
+
+  echo "Plik klucza: ${env_file}"
+  if [[ "${verify_ok}" -eq 1 ]]; then
+    echo "Weryfikacja live (server-ui :${ui_port}): OK"
+  else
+    echo "Weryfikacja live (server-ui :${ui_port}): FAIL"
+    echo "  Sprawdź: systemctl status server-ui"
+    echo "  Lub: bash stacks/server-ui/scripts/verify-api-key.sh"
+  fi
+  echo ""
+
   echo "1. Twój klucz API (skopiuj):"
   echo ""
   echo "   ${api_key}"
@@ -45,13 +89,20 @@ print_api_key_instructions() {
   echo "   d) Kliknij „Sprawdź klucz” (powinno być: Klucz poprawny)"
   echo "   e) Dopiero potem Start/Stop, CLI, Pliki, GPU Fan"
   echo ""
+  echo "4. Stary klucz w przeglądarce?"
+  echo "   a) W panelu kliknij „Wyczyść klucz”"
+  echo "   b) Lub F12 → Application → Local Storage → usuń server-ui-api-key"
+  echo "   c) Ctrl+F5, potem kroki 2–3"
+  echo ""
   echo "Plik klucza (na przyszłość):"
   echo "   sudo grep ^API_KEY= ${env_file}"
   echo ""
   echo "══════════════════════════════════════════════"
   echo ""
+
+  [[ "${verify_ok}" -eq 1 ]]
 }
 
 if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
-  print_api_key_instructions "${1:-/opt/control-plane/.env}" "${2:-8091}"
+  print_api_key_instructions "${1:-/opt/control-plane/.env}" "${2:-8091}" "${3:-}"
 fi