feat: add system settings with model connectivity and encrypted storage

start.sh

@@ -32,6 +32,9 @@ set +a
 
 SERVER_STARTUP_TIMEOUT="${SERVER_STARTUP_TIMEOUT:-300}"
 SETUP_COMPLETED="${SETUP_COMPLETED:-false}"
+APP_DEBUG="${APP_DEBUG:-true}"
+APP_ENV="${APP_ENV:-local}"
+SERVER_RELOAD="${SERVER_RELOAD:-}"
 
 server_probe_url() {
   echo "http://${SERVER_HOST:-127.0.0.1}:${SERVER_PORT:-8000}${API_V1_PREFIX:-/api/v1}/health"
@@ -155,6 +158,9 @@ start_all() {
 
   if probe_server_ready "$probe_url" "$smoke_url"; then
     warn "FastAPI is already ready at $probe_url. Reusing the existing backend process."
+    if [ "$APP_DEBUG" = "true" ] && [ "$SERVER_RELOAD" != "true" ]; then
+      warn "This backend may be stale because SERVER_RELOAD is disabled. If new API routes are missing, stop the old backend process and rerun ./start.sh."
+    fi
   elif probe_server_health "$probe_url"; then
     error "An existing backend process is responding at $probe_url, but the smoke check failed at $smoke_url. Stop the old FastAPI process and rerun ./start.sh."
   else