feat: add guided exploration and share user-started MCP backend

apps/showcase_ui/src/app/components/model-settings/capability-settings.component.ts

@@ -84,6 +84,12 @@ interface Capabilities {
     .number-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; }
     .number-fields label { display: block; padding: 0; color: #334155; }
     .number-fields input, .number-fields select { box-sizing: border-box; display: block; width: 100%; height: auto; margin-top: 8px; padding: 9px; border: 1px solid #cbd5e1; border-radius: 8px; font: inherit; }
+    section {font-size:13px;border-color:#e2e8f0}h3 {font-size:15px;color:#334155}
+    section > label {align-items:center;flex-direction:row-reverse;justify-content:space-between;border-bottom:1px solid #f1f5f9;gap:20px}section > label > span {flex:1}small {font-size:12px}
+    input[role=switch] {appearance:none;position:relative;width:36px;height:22px;border:1px solid #cbd5e1;border-radius:20px;background:#e2e8f0;cursor:pointer;transition:background .15s}
+    input[role=switch]::after {content:'';position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #0f172a25;transition:transform .15s}
+    input[role=switch]:checked {background:#6366f1;border-color:#6366f1}input[role=switch]:checked::after {transform:translateX(14px)}input[role=switch]:focus-visible {outline:2px solid #a5b4fc;outline-offset:3px}input:disabled {opacity:.5;cursor:default}
+    button {background:#4f46e5;border-color:#4f46e5;border-radius:12px;font-weight:600}.execution-settings {border-color:#e2e8f0;border-radius:14px;padding:14px 16px}.number-fields input,.number-fields select {background:#fff;border-color:#dbe3ec}
     @media(max-width: 480px) { .number-fields { grid-template-columns: 1fr; } }`]
 })
 export class CapabilitySettingsComponent implements OnInit {