Update blog images, remove deleted posts, and configure rotating featured post

components/kalkulator/KalkulatorClient.tsx

@@ -288,12 +288,12 @@ export function KalkulatorClient({ products }: Props) {
                   <p className="font-bold text-primary">Klimatyzacja</p>
                   <p className="text-xs text-text-muted mt-1">Chłodzenie latem, opcjonalne grzanie zimą</p>
                 </button>
-                {/* <button onClick={() => setDeviceType('pompa')}
+                <button onClick={() => setDeviceType('pompa')}
                   className={`p-5 rounded-xl border-2 text-left transition-all ${deviceType === 'pompa' ? 'border-accent bg-accent/5' : 'border-border hover:border-accent'}`}>
                   <span className="text-3xl mb-2 block">🔥</span>
                   <p className="font-bold text-primary">Pompa ciepła</p>
                   <p className="text-xs text-text-muted mt-1">Głównie ogrzewanie domu z niskim kosztem eksploatacji</p>
-                </button> */}
+                </button>
               </div>
               {deviceType === 'pompa' && !pumpFormSent && (
                 <div className="mt-4 p-5 bg-white border border-border rounded-2xl flex flex-col gap-4">