CHANGELOG.md

@@ -11,6 +11,8 @@ loosely follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
   to remove a shared project scratchpad.
 
 ### Changed
+- The tab bar now shows each visible agent tab's own summary instead
+  of only rendering the focused tab's summary.
 - Grid-mode `get_process_output` now returns whitespace-normalized
   text to avoid sending padded terminal rows and repeated blank lines
   over MCP.

TODO.md

@@ -1 +0,0 @@
-- [ ] The per-tab agent summary text should display below the tab always, not just when the tab is focused.

internal/app/app.go

@@ -514,7 +514,14 @@ func (st *uiState) dbgf(format string, args ...any) {
 }
 
 func (st *uiState) activeSummaryText(width int) string {
-	text := st.activeSummaryRaw()
+	st.mu.Lock()
+	active := st.activeAgentID
+	st.mu.Unlock()
+	return st.summaryTextFor(active, width)
+}
+
+func (st *uiState) summaryTextFor(childID string, width int) string {
+	text := st.summaryRawFor(childID)
 	if text == "" || width <= 0 {
 		return ""
 	}
@@ -525,7 +532,14 @@ func (st *uiState) activeSummaryText(width int) string {
 }
 
 func (st *uiState) activeSummaryRaw() string {
-	if st.summaries == nil {
+	st.mu.Lock()
+	active := st.activeAgentID
+	st.mu.Unlock()
+	return st.summaryRawFor(active)
+}
+
+func (st *uiState) summaryRawFor(childID string) string {
+	if st.summaries == nil || childID == "" {
 		return ""
 	}
 	st.settingsMu.Lock()
@@ -534,13 +548,7 @@ func (st *uiState) activeSummaryRaw() string {
 	if !enabled {
 		return ""
 	}
-	st.mu.Lock()
+	sum := st.summaries.Summary(childID)
-	active := st.activeAgentID
-	st.mu.Unlock()
-	if active == "" {
-		return ""
-	}
-	sum := st.summaries.Summary(active)
 	text := strings.TrimSpace(sum.Text)
 	if text == "" {
 		return ""

internal/app/summarizer_test.go

@@ -52,6 +52,41 @@ func TestWrapSidebarSummaryKeepsWordBoundaries(t *testing.T) {
 	}
 }
 
+func TestSummaryTextForSelectsChildAndClips(t *testing.T) {
+	sess := NewSession(t.TempDir(), "test")
+	cfg := defaultSettings()
+	st := &uiState{
+		sess:     sess,
+		settings: cfg,
+		summaries: newSummaryManager(sess, t.TempDir(), preset.Set{}, func() autoSummarySettings {
+			return cfg.AutoSummary.clone()
+		}, nil, nil),
+	}
+	st.summaries.mu.Lock()
+	st.summaries.entries["a1"] = &summaryEntry{state: summaryState{Text: " alpha summary "}}
+	st.summaries.entries["a2"] = &summaryEntry{state: summaryState{Text: "beta summary"}}
+	st.summaries.entries["empty"] = &summaryEntry{state: summaryState{Text: "   "}}
+	st.summaries.entries["long"] = &summaryEntry{state: summaryState{Text: "abcdefghijklmnopqrstuvwxyz"}}
+	st.summaries.mu.Unlock()
+
+	if got := st.summaryTextFor("a2", 20); got != "beta summary" {
+		t.Fatalf("summaryTextFor(a2) = %q, want beta summary", got)
+	}
+	if got := st.summaryTextFor("empty", 20); got != "" {
+		t.Fatalf("summaryTextFor(empty) = %q, want empty", got)
+	}
+	if got := st.summaryTextFor("long", 8); got != "abcdefg…" {
+		t.Fatalf("summaryTextFor(long) = %q, want abcdefg…", got)
+	}
+
+	st.settingsMu.Lock()
+	st.settings.AutoSummary.Enabled = false
+	st.settingsMu.Unlock()
+	if got := st.summaryTextFor("a1", 20); got != "" {
+		t.Fatalf("summaryTextFor disabled = %q, want empty", got)
+	}
+}
+
 func TestSummaryManagerArmsOnlyTrackedTopLevelAgents(t *testing.T) {
 	sess := NewSession(t.TempDir(), "test")
 	c := newChildEntry("a1", "agent", KindAgent, []string{"fake"}, nil, "", "", "")

internal/app/tabbar.go

@@ -59,6 +59,7 @@ func (st *uiState) drawTabBar() {
 	newHintW := utf8.RuneCountInString(newHint) + 2 // " + new " framing
 
 	type tabRect struct {
+		childID    string
 		startCol   int
 		width      int
 		label      string
@@ -66,8 +67,6 @@ func (st *uiState) drawTabBar() {
 		glyphStyle string
 		active     bool
 	}
-	activeTab := -1
-
 	// Reserve space at the right edge for "+ new". If there are too
 	// many tabs to fit even at minTabWidth, drop tabs from the right
 	// until they do. The current focus stays visible.
@@ -139,6 +138,7 @@ func (st *uiState) drawTabBar() {
 				labelW = utf8.RuneCountInString(label)
 			}
 			tabs = append(tabs, tabRect{
+				childID:    c.ID,
 				startCol:   col,
 				width:      w,
 				label:      label,
@@ -146,9 +146,6 @@ func (st *uiState) drawTabBar() {
 				glyphStyle: glyphStyle,
 				active:     active,
 			})
-			if tabs[len(tabs)-1].active {
-				activeTab = len(tabs) - 1
-			}
 			col += w
 		}
 	}
@@ -224,10 +221,9 @@ func (st *uiState) drawTabBar() {
 			hintCol, styleBorder, strings.Repeat("─", newHintW), styleReset)
 	}
 
-	if activeTab >= 0 {
+	for _, tab := range tabs {
-		tab := tabs[activeTab]
 		summaryWidth := tab.width - 2
-		if summary := st.activeSummaryText(summaryWidth); summary != "" {
+		if summary := st.summaryTextFor(tab.childID, summaryWidth); summary != "" {
 			fmt.Fprintf(&b, "\x1b[2;%dH %s%s%s", tab.startCol, styleDim, summary, styleReset)
 		}
 	}