Tighten admin visitor facts and add widget branding

public/widget.js

@@ -53,6 +53,7 @@
           </label>
           <div class="mf-attachment-list"></div>
           <p class="mf-note">Odeslanim zpravy nam predavate udaje potrebne pro odpoved.</p>
+          <a class="mf-powered" href="https://app.black-week.cz" target="_blank" rel="noopener noreferrer">Powered by MaalFlows</a>
         </form>
       </section>
     `;
@@ -276,6 +277,8 @@
       .mf-attachment-chip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 210px; }
       .mf-attachment-chip button { width: 22px; height: 22px; border: 0; border-radius: 50%; background: #e8eee9; color: ${c.text}; cursor: pointer; padding: 0; }
       .mf-note { margin: 0; color: ${c.muted}; font-size: 11px; line-height: 1.3; }
+      .mf-powered { justify-self: center; color: ${c.muted}; font-size: 11px; text-decoration: none; }
+      .mf-powered:hover { color: ${c.brand}; text-decoration: underline; }
       @media (max-width: 640px) {
         .mf-launcher { ${mobile.side}: ${mobile.sideOffsetPx}px; bottom: ${mobile.bottomPx}px; }
         .mf-panel { ${mobile.side}: ${mobile.sideOffsetPx}px; bottom: ${mobile.bottomPx + 68}px; width: min(${mobile.widthPx}px, calc(100vw - 24px)); max-height: calc(100vh - 96px); }