feat(tui): filter subagents by activity

packages/tui/src/mini/footer.command.tsx

@@ -767,19 +767,23 @@ export function RunSubagentSelectBody(props: {
   onRows?: (rows: number) => void
   mono?: boolean
 }) {
+  const [active, setActive] = createSignal(true)
   const entries = createMemo<SubagentEntry[]>(() =>
-    props.tabs().map((item) => {
-      const title = item.description || item.title || item.label
-      return {
-        category: "",
-        display: title,
-        description: title === item.label ? undefined : item.label,
-        footer: subagentStatusLabel(item.status),
-        keywords: `${item.label} ${item.description} ${item.title ?? ""} ${item.status}`,
-        sessionID: item.sessionID,
-        current: props.current() === item.sessionID,
-      }
-    }),
+    props
+      .tabs()
+      .filter((item) => (active() ? item.status === "running" : item.status !== "running"))
+      .map((item) => {
+        const title = item.description || item.title || item.label
+        return {
+          category: "",
+          display: title,
+          description: title === item.label ? undefined : item.label,
+          footer: subagentStatusLabel(item.status),
+          keywords: `${item.label} ${item.description} ${item.title ?? ""} ${item.status}`,
+          sessionID: item.sessionID,
+          current: props.current() === item.sessionID,
+        }
+      }),
   )
   const controller = createSearchablePanelController({
     entries,
@@ -788,6 +792,12 @@ export function RunSubagentSelectBody(props: {
     onSelect: (item) => props.onSelect(item.sessionID),
     isCurrent: (item) => item.current,
     closeOnFirstUp: true,
+    onKey(event) {
+      if (event.name.toLowerCase() !== "tab") return false
+      event.preventDefault()
+      setActive((value) => !value)
+      return true
+    },
     onRows: props.onRows,
   })
 
@@ -801,6 +811,7 @@ export function RunSubagentSelectBody(props: {
       theme={props.theme}
       inputRef={controller.inputRef}
       onQuery={controller.setQuery}
+      hint={`tab show ${active() ? "inactive" : "active"}`}
       mono={props.mono}
     >
       <RunFooterMenu

packages/tui/src/routes/session/composer/subagents-tab.tsx

@@ -27,6 +27,7 @@ export function SubagentsTab(props: { sessionID: string }) {
   const shortcuts = Keymap.useShortcuts()
 
   const session = createMemo(() => data.session.get(props.sessionID))
+  const [store, setStore] = createStore({ selected: 0, active: true })
 
   const entries = createMemo<SubagentEntry[]>(() => {
     const current = session()
@@ -72,10 +73,9 @@ export function SubagentsTab(props: { sessionID: string }) {
       }
     }
 
-    return result
+    return result.filter((entry) => (store.active ? entry.status === "running" : entry.status !== "running"))
   })
 
-  const [store, setStore] = createStore({ selected: 0 })
   let selectedSessionID = ""
   let wasActive = false
   let scroll: ScrollBoxRenderable | undefined
@@ -90,7 +90,7 @@ export function SubagentsTab(props: { sessionID: string }) {
     if (!active) {
       if (wasActive) {
         selectedSessionID = ""
-        setStore("selected", 0)
+        setStore({ selected: 0, active: true })
       }
       wasActive = false
       return
@@ -140,8 +140,15 @@ export function SubagentsTab(props: { sessionID: string }) {
       label: "Subagents",
       hints: () => {
         const entry = selectedEntry()
-        if (!entry || entry.status !== "running") return []
-        return [{ label: "interrupt", shortcut: shortcuts.get("composer.subagent.interrupt") ?? "" }]
+        return [
+          ...(entry?.status === "running"
+            ? [{ label: "interrupt", shortcut: shortcuts.get("composer.subagent.interrupt") ?? "" }]
+            : []),
+          {
+            label: `show ${store.active ? "inactive" : "active"}`,
+            shortcut: shortcuts.get("composer.subagent.toggle-activity") ?? "",
+          },
+        ]
       },
       onClose: () => {
         const parentID = session()?.parentID
@@ -189,6 +196,16 @@ export function SubagentsTab(props: { sessionID: string }) {
           if (entry) navigate({ type: "session", sessionID: entry.sessionID })
         },
       },
+      {
+        id: "composer.subagent.toggle-activity",
+        title: "Toggle active subagents",
+        group: "Composer",
+        bind: "ctrl+a",
+        run() {
+          setStore({ selected: 0, active: !store.active })
+          scroll?.scrollTo(0)
+        },
+      },
       {
         id: "composer.subagent.interrupt",
         title: "Interrupt subagent",
@@ -206,7 +223,10 @@ export function SubagentsTab(props: { sessionID: string }) {
   return (
     <Show when={composer.active("subagents")}>
       <scrollbox scrollbarOptions={{ visible: false }} maxHeight={5} ref={(r: ScrollBoxRenderable) => (scroll = r)}>
-        <Show when={entries().length > 0} fallback={<text fg={theme.text.subdued}> No subagents</text>}>
+        <Show
+          when={entries().length > 0}
+          fallback={<text fg={theme.text.subdued}> No {store.active ? "active" : "inactive"} subagents</text>}
+        >
           <For each={entries()}>
             {(entry, index) => {
               const active = createMemo(() => index() === selected())

packages/tui/test/mini/footer.view.test.tsx

@@ -820,7 +820,7 @@ test("direct command panel keeps completed subagents available", async () => {
   }
 })
 
-test("direct subagent panel renders active subagents", async () => {
+test("direct subagent panel toggles between active and inactive subagents", async () => {
   const [tabs] = createSignal([
     subagent({ sessionID: "s-1", label: "Explore", description: "Inspect auth flow" }),
     subagent({ sessionID: "s-2", label: "General", description: "Write migration plan", status: "completed" }),
@@ -856,12 +856,22 @@ test("direct subagent panel renders active subagents", async () => {
 
     expect(frame).toContain("Select subagent")
     expect(frame).toContain("Inspect auth flow")
-    expect(frame).toContain("Write migration plan")
-    expect(frame).toContain("done")
+    expect(frame).not.toContain("Write migration plan")
+    expect(frame).not.toContain("done")
+    expect(frame).toContain("tab show inactive")
     expect(frame).not.toContain("┌")
     expect(frame).not.toContain("┃")
     expectPaletteList(list, 0)
-    expect(rows).toBe(8)
+    expect(rows).toBe(7)
+
+    app.mockInput.pressKey("TAB")
+    await app.renderOnce()
+    const inactive = app.captureCharFrame()
+
+    expect(inactive).not.toContain("Inspect auth flow")
+    expect(inactive).toContain("Write migration plan")
+    expect(inactive).toContain("done")
+    expect(inactive).toContain("tab show active")
   } finally {
     app.renderer.destroy()
   }