feat(settings): add nisrael to contributors, update cucadmuh/kilyabin, move logout button

- Add nisrael (Nightfox themes PR #114, rustls-tls fix PR #112)
- Update cucadmuh with gapless manual skip fix (PR #119)
- Update kilyabin with RU locale improvements (PR #120) and auto-install script (PR #121)
- Move logout button from System tab to Server tab — styled as btn-danger (outlined red)
- Add .btn-danger CSS class to theme.css

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/styles/theme.css

@@ -3678,6 +3678,23 @@ body.psy-dragging * {
   border-color: var(--ctp-overlay0);
 }
 
+.btn-danger {
+  background: transparent;
+  color: var(--danger);
+  border: 1px solid var(--danger);
+}
+
+.btn-danger:hover {
+  background: var(--danger);
+  color: #fff;
+  transform: translateY(-1px);
+  box-shadow: 0 4px 12px color-mix(in srgb, var(--danger) 35%, transparent);
+}
+
+.btn-danger:active {
+  transform: translateY(0);
+}
+
 /* ─── Input ─── */
 .input {
   width: 100%;