fix(agent): 会话列表分栏跟随当前会话并进 URL,保留滚动位置

- 打开巡检会话(含巡检的子会话)时左栏自动切到「自动巡检」并选中当前项;
  手动切换分栏写进 ?tab=,刷新、窄屏「全部会话」返回都保持
- 列表页 / 会话页之间保留搜索、筛选和各分栏的滚动位置;当前会话看不见时滚进可见区
- 跳到子会话时展开父会话
- 演示模式的分栏筛选与服务端一致:子会话随父会话

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Cxwgnn2pbzQ7rXv3rq7fei

apps/web/app/api/agent.ts

@@ -141,22 +141,34 @@ export const TRIGGER_LABEL: Record<AgentTrigger, string> = {
 export type AgentRunGroup = "conversation" | "auto";
 const isAutoTrigger = (t: AgentTrigger) => t === "schedule" || t === "event";
 
+/** 会话所在分栏:子会话随父会话(与服务端 group 筛选一致);父会话未知时子会话归「对话」 */
+export function runGroup(
+  run: Pick<AgentRunView, "trigger">,
+  parent?: Pick<AgentRunView, "trigger"> | null,
+): AgentRunGroup {
+  const t = run.trigger === "subagent" && parent ? parent.trigger : run.trigger;
+  return isAutoTrigger(t) ? "auto" : "conversation";
+}
+
 export function useAgentRuns(status?: AgentRunStatus, trigger?: AgentTrigger, group?: AgentRunGroup) {
   const mock = useAgentMockGate();
   return useInfiniteQuery({
     queryKey: [...agentKeys.runs(status, trigger, group), mock],
     initialPageParam: undefined as string | undefined,
     queryFn: async ({ pageParam, signal }) => {
-      if (mock)
+      if (mock) {
+        const all = MOCK_RUNS();
+        const byId = new Map(all.map((r) => [r.id, r] as const));
         return {
-          items: MOCK_RUNS().filter(
+          items: all.filter(
             (r) =>
               (!status || r.status === status) &&
               (!trigger || r.trigger === trigger) &&
-              (!group || isAutoTrigger(r.trigger) === (group === "auto")),
+              (!group || runGroup(r, r.parentRunId ? byId.get(r.parentRunId) : null) === group),
           ),
           nextCursor: null,
         };
+      }
       return apiParsed(RunPage, AGENT_BASE, {
         params: cleanParams({ status, trigger, group, cursor: pageParam, limit: 30 }),
         signal,