feat(13-protection-packages): Pakiety ochronne SOFT/PREMIUM z panelu WP

- Panel admina (wp-admin > Rezerwacje > Pakiety ochronne) do zarzadzania
  nazwami, cenami za dobe, aktywnoscia i opisami pakietow SOFT i PREMIUM
  (zapis w wp_options carei_protection_packages)
- REST endpoint GET /carei/v1/protection-packages zwracajacy aktywne pakiety
- Radio cards SOFT/PREMIUM w modalu rezerwacji nad pozycjami "Pakiety ochronne"
  z API (osobne zrodlo danych, separator wizualny)
- Radio z deselect (klik zaznaczonego odznacza), natywny input z accent-color
- Pakiet NIE wysylany w priceItems Softra (powodowalo HTTP 400) - zamiast tego
  doklejany do comments booking i zapisywany w _carei_protection_package meta
- Summary frontend dokorysowuje wiersz pakietu w tabeli cen i dolicza do
  total gross (grandGross = softraGross + protectionTotal)
- Plan 13-01 oznaczony jako superseded (klient zmienil zrodlo danych)
- Phase 13 Complete, Milestone v0.5 Complete

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

wp-content/plugins/carei-reservation/assets/css/carei-reservation.css

@@ -597,6 +597,89 @@ button.carei-reservation-trigger:hover {
     color: inherit;
 }
 
+/* ═══════════════════════════════════════════
+   Protection Packages (SOFT / PREMIUM — zarządzane w panelu WP)
+   ═══════════════════════════════════════════ */
+.carei-form__row--protection-packages {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: 12px;
+}
+.carei-form__protection-package {
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
+    padding: 16px;
+    border: 1px solid var(--carei-border);
+    border-radius: var(--carei-radius);
+    background: var(--carei-white);
+    cursor: pointer;
+    transition: border-color 0.2s;
+    min-width: 0;
+    overflow: hidden;
+}
+.carei-form__protection-package:hover {
+    border-color: rgba(47, 36, 130, 0.4);
+}
+.carei-form__protection-package.is-selected {
+    border-color: var(--carei-blue);
+}
+.carei-form__protection-package__row {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    min-width: 0;
+}
+.carei-form__protection-package__input {
+    flex-shrink: 0;
+    width: 16px;
+    height: 16px;
+    accent-color: var(--carei-blue);
+    cursor: pointer;
+    margin: 0;
+}
+.carei-form__protection-package__name {
+    font-weight: 600;
+    font-size: 15px;
+    color: var(--carei-blue);
+    flex: 1;
+    min-width: 0;
+    word-break: break-word;
+}
+.carei-form__protection-package__price {
+    font-weight: 400;
+    font-size: 14px;
+    color: #505050;
+    margin-left: auto;
+    white-space: nowrap;
+    flex-shrink: 0;
+}
+.carei-form__protection-package__price strong {
+    color: inherit;
+}
+.carei-form__protection-package__desc {
+    font-size: 12px;
+    color: #666;
+    line-height: 1.4;
+}
+.carei-form__protection-package__desc:empty {
+    display: none;
+}
+.carei-form__protection-divider {
+    margin: 14px 0;
+    border-top: 1px dashed rgba(47, 36, 130, 0.18);
+    height: 0;
+}
+.carei-form__row--protection-packages:empty + .carei-form__protection-divider {
+    display: none;
+}
+
+@media (max-width: 640px) {
+    .carei-form__row--protection-packages {
+        grid-template-columns: 1fr;
+    }
+}
+
 .carei-form__checkbox-label--abroad {
     align-items: center;
     font-weight: 600;