feat(ui-tui): slash command history/display, CoT fade, live skin switch, fix double reasoning

ui-tui/src/app.tsx

@@ -840,7 +840,7 @@ export function App({ gw }: { gw: GatewayClient }) {
       return
     }
 
-    if (completions.length && input && (key.upArrow || key.downArrow)) {
+    if (completions.length && input && historyIdx === null && (key.upArrow || key.downArrow)) {
       setCompIdx(i => (key.upArrow ? (i - 1 + completions.length) % completions.length : (i + 1) % completions.length))
 
       return
@@ -1004,6 +1004,13 @@ export function App({ gw }: { gw: GatewayClient }) {
 
           break
 
+        case 'skin.changed':
+          if (p) {
+            setTheme(fromSkin(p.colors ?? {}, p.branding ?? {}, p.banner_logo ?? '', p.banner_hero ?? ''))
+          }
+
+          break
+
         case 'session.info':
           setInfo(p as SessionInfo)
 
@@ -1520,6 +1527,15 @@ export function App({ gw }: { gw: GatewayClient }) {
 
           return true
 
+        case 'skin':
+          if (arg) {
+            rpc('config.set', { key: 'skin', value: arg }).then((r: any) => sys(`skin → ${r.value}`))
+          } else {
+            rpc('config.get', { key: 'skin' }).then((r: any) => sys(`skin: ${r.value || 'default'}`))
+          }
+
+          return true
+
         case 'yolo':
           rpc('config.set', { key: 'yolo' }).then((r: any) => sys(`yolo ${r.value === '1' ? 'on' : 'off'}`))