feat(subagent): 实验功能设置新增子代理模型配置

- 子代理设置页支持选择次主力模型，仅保存模型引用（不再写补丁字段），
  子代理直接继承所选模型的上下文长度与思考模式
- 界面只读展示继承的上下文长度与思考模式，移除补丁编辑项
- 仪表盘统计识别子代理请求（__secondary__）：归为「子代理模型（估算）」
  并缓存次主力模型定价；自定义网关模型价格按官方同名模型跨 provider 匹配
- bump v0.7.1

src/components/dashboard/DailyBars.tsx

@@ -59,6 +59,10 @@ export function DailyBars({ daily, dimension, names, unknownProviderLabel }: Dai
     if (dimension === "provider") {
       return key === "unknown" ? unknownProviderLabel : key;
     }
+    // Subagent records (Kimi Code `__secondary__` marker) show their own label.
+    if (key === "__secondary__") {
+      return t("subagentModel");
+    }
     return shortModel(key);
   };
 

src/components/dashboard/DailyDetailModal.tsx

@@ -25,6 +25,10 @@ export function DailyDetailModal({ day, dimension, colorMap, unknownProviderLabe
   const { t } = useTranslation();
   const { money } = useCurrency();
 
+  /** Subagent records (Kimi Code `__secondary__` marker) show their own label. */
+  const modelName = (model: string) =>
+    model === "__secondary__" ? t("subagentModel") : shortModel(model);
+
   useEffect(() => {
     const onKey = (e: KeyboardEvent) => {
       if (e.key === "Escape") onClose();
@@ -143,7 +147,7 @@ export function DailyDetailModal({ day, dimension, colorMap, unknownProviderLabe
                       <div className="mt-1 ml-5 space-y-0.5">
                         {p.models.map((m) => (
                           <div key={m.model} className="flex items-baseline justify-between gap-2 text-xs">
-                            <span className="truncate text-content-muted" title={m.model}>{shortModel(m.model)}</span>
+                            <span className="truncate text-content-muted" title={m.model}>{modelName(m.model)}</span>
                             <span className="shrink-0 text-content-muted tabular-nums">{fmtTokens(m.tokens)}</span>
                           </div>
                         ))}
@@ -167,7 +171,7 @@ export function DailyDetailModal({ day, dimension, colorMap, unknownProviderLabe
                       <span className="inline-block h-2.5 w-2.5 rounded-sm shrink-0" style={{ backgroundColor: modelColor(i) }} />
                       <div className="min-w-0 flex-1">
                         <div className="flex items-baseline justify-between gap-2">
-                          <span className="truncate text-content-primary" title={s.model}>{shortModel(s.model)}</span>
+                          <span className="truncate text-content-primary" title={s.model}>{modelName(s.model)}</span>
                           <span className="shrink-0 text-xs text-content-muted tabular-nums">
                             {fmtTokens(s.tokens)} <span className="text-content-muted">· {s.pct.toFixed(1)}%</span>
                           </span>

src/components/dashboard/DashboardPage.tsx

@@ -310,7 +310,9 @@ export function DashboardPage() {
                             }}
                           />
                           <div className="flex items-center gap-1.5 min-w-0">
-                            <span className="text-content-primary whitespace-nowrap truncate">{m.modelDisplay || m.model}</span>
+                            <span className="text-content-primary whitespace-nowrap truncate">
+                              {m.isSecondary ? t("subagentModel") : m.modelDisplay || m.model}
+                            </span>
                             {m.costEstimated && (
                               <span className="text-[10px] text-yellow-600 shrink-0">({t("estimate")})</span>
                             )}
@@ -371,7 +373,13 @@ export function DashboardPage() {
                       <td className="py-1.5 pr-4 text-content-muted whitespace-nowrap">
                         {fmtTime(r.time)}
                       </td>
-                      <td className="py-1.5 pr-4 text-content-primary">{r.modelDisplay || r.model}</td>
+                      <td className="py-1.5 pr-4 text-content-primary">
+                        <span className="flex items-center gap-1.5 min-w-0">
+                          <span className="truncate">
+                            {r.isSecondary ? t("subagentModel") : r.modelDisplay || r.model}
+                          </span>
+                        </span>
+                      </td>
                       <td className="py-1.5 pr-4 text-right text-content-muted">{fmtTokens(r.inputOther)}</td>
                       <td className="py-1.5 pr-4 text-right text-content-muted">{fmtTokens(r.output)}</td>
                       <td className="py-1.5 pr-4 text-right text-content-muted">{fmtTokens(r.inputCacheRead)}</td>