feat(agent): in-drawer history tab and denser session layout (AGUI-2)

- Drawer tabs 当前/历史: searchable run list (status/source/time filters,
  cursor auto-load), opens runs inside the drawer, keeps scroll and filters,
  remembers the last tab; 在页面打开 is secondary
- Ended runs: append to resume, or 用同目标新建 with 先看方案再执行 toggle
- Session page: 88ch conversation column, turns grouped with one timestamp,
  tool cards collapse to one line, 3+ activities fold; steps/subagents/budget
  moved to a right rail (collapsible overview bar on narrow screens and in
  the drawer), long model reports fold behind 展开全文
- Smoke covers the drawer history flow

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/web/app/api/agent.ts

@@ -13,6 +13,7 @@ import {
   type AgentRunEvent,
   type AgentRunMessage,
   type AgentRunStatus,
+  type AgentTrigger,
   Approval,
   type ApprovalStatus,
   AuditEvent,
@@ -119,21 +120,38 @@ function useAgentMockGate(): boolean {
 
 export const agentKeys = {
   all: ["agent"] as const,
-  runs: (status?: AgentRunStatus) => ["agent", "list", status ?? "all"] as const,
+  runs: (status?: AgentRunStatus, trigger?: AgentTrigger) =>
+    ["agent", "list", status ?? "all", trigger ?? "any"] as const,
   run: (id: string) => ["agent", "detail", id] as const,
 };
 
 const RUNNING: AgentRunStatus[] = ["queued", "running", "waiting"];
 export const isRunActive = (s: AgentRunStatus | undefined) => !!s && RUNNING.includes(s);
 
-export function useAgentRuns(status?: AgentRunStatus) {
+/** 会话来源(run.trigger)的界面名:手动 / 巡检 / 事件 / 子会话 */
+export const TRIGGER_LABEL: Record<AgentTrigger, string> = {
+  user: "手动",
+  schedule: "巡检",
+  event: "事件",
+  subagent: "子会话",
+};
+
+/** 会话列表:按状态、来源(trigger)在服务端筛选,游标翻页 */
+export function useAgentRuns(status?: AgentRunStatus, trigger?: AgentTrigger) {
   const mock = useAgentMockGate();
   return useInfiniteQuery({
-    queryKey: [...agentKeys.runs(status), mock],
+    queryKey: [...agentKeys.runs(status, trigger), mock],
     initialPageParam: undefined as string | undefined,
     queryFn: async ({ pageParam, signal }) => {
-      if (mock) return { items: MOCK_RUNS().filter((r) => !status || r.status === status), nextCursor: null };
-      return apiParsed(RunPage, AGENT_BASE, { params: cleanParams({ status, cursor: pageParam, limit: 30 }), signal });
+      if (mock)
+        return {
+          items: MOCK_RUNS().filter((r) => (!status || r.status === status) && (!trigger || r.trigger === trigger)),
+          nextCursor: null,
+        };
+      return apiParsed(RunPage, AGENT_BASE, {
+        params: cleanParams({ status, trigger, cursor: pageParam, limit: 30 }),
+        signal,
+      });
     },
     getNextPageParam: (last) => last.nextCursor ?? undefined,
     refetchInterval: (q) =>