diff --git a/internal/tui/actions.go b/internal/tui/actions.go
index 098ea15..ac24dda 100644
--- a/internal/tui/actions.go
+++ b/internal/tui/actions.go
@@ -322,20 +322,26 @@ func (m Model) confirmDeleteAll() (tea.Model, tea.Cmd) {
 	m.confirm = nil
 	m.screen = screenList
 
-	sesSvc := m.sesSvc
 	wtSvc := m.wtSvc
 	tmuxClient := m.tmuxClient
 	project := target.Project
 	branch := target.Branch
+	agentID := target.AgentSessionID
 	shellID := target.ShellSessionID
 
 	return m, func() tea.Msg {
-		if target.AgentSessionID != "" {
-			_ = sesSvc.Stop(project, branch, semconv.SessionTypeAgent)
-		}
-
-		if shellID != "" {
-			_ = tmuxClient.KillSession(shellID)
+		// Kill by tmux session ID, never by a rebuilt session name: the name
+		// depends on the active profile and on the identity branch, either of
+		// which can differ from what this item displays. A lookup miss here
+		// would leave the session — and the agent process under it — alive
+		// while the worktree is force-deleted out from under it.
+		for _, id := range []string{agentID, shellID} {
+			if id == "" {
+				continue
+			}
+			if err := tmuxClient.KillSession(id); err != nil {
+				return errMsg{err: fmt.Errorf("killing session %s: %w", id, err)}
+			}
 		}
 
 		err := wtSvc.Delete(worktree.DeleteRequest{
diff --git a/internal/tui/delete_teardown_test.go b/internal/tui/delete_teardown_test.go
new file mode 100644
index 0000000..eda6007
--- /dev/null
+++ b/internal/tui/delete_teardown_test.go
@@ -0,0 +1,114 @@
+package tui
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/xico42/codeherd/internal/config"
+	"github.com/xico42/codeherd/internal/hooks"
+	"github.com/xico42/codeherd/internal/session"
+	"github.com/xico42/codeherd/internal/tmux"
+	"github.com/xico42/codeherd/internal/worktree"
+)
+
+// recordingRunner serves a fixed list-sessions table and records kill-session targets.
+type recordingRunner struct {
+	sessions string
+	killed   []string
+}
+
+func (r *recordingRunner) Run(args ...string) (string, string, int, error) {
+	switch args[0] {
+	case "list-sessions":
+		return r.sessions, "", 0, nil
+	case "kill-session":
+		// args: kill-session -t <target>
+		r.killed = append(r.killed, args[2])
+		return "", "", 0, nil
+	}
+	return "", "", 0, nil
+}
+
+// sessionRow builds one tab-separated list-sessions record.
+func sessionRow(id, name, canonical, sessType, profile, branch string) string {
+	return strings.Join([]string{id, name, canonical, sessType, "running", "", "", profile, branch}, "\t")
+}
+
+// A worktree whose HEAD has diverged displays the checked-out branch, which is
+// not the identity branch its session was named after. Teardown must not depend
+// on that display value. No profile is involved here.
+func TestConfirmDeleteAll_divergedHeadSessionIsKilled(t *testing.T) {
+	runner := &recordingRunner{
+		sessions: sessionRow("$1", "myapp-feat", "myapp-feat", "agent", "", "feat"),
+	}
+	client := tmux.NewClient(runner)
+	cfg := &config.Config{Projects: map[string]config.ProjectConfig{}}
+
+	m := Model{
+		sesSvc:     session.NewService(client, &hooks.NoOp{}),
+		wtSvc:      worktree.NewService(cfg, worktree.NewRealWorktreeRunner(), client, &hooks.NoOp{}),
+		tmuxClient: client,
+		confirm: newConfirmModel(Item{
+			Project:        "myapp",
+			Branch:         "other", // displayed branch after divergence
+			AgentSessionID: "$1",
+			HasAgent:       true,
+			HeadHint:       "on other",
+		}),
+	}
+
+	_, cmd := m.confirmDeleteAll()
+	cmd()
+
+	if len(runner.killed) != 1 || runner.killed[0] != "$1" {
+		t.Errorf("agent session $1 not killed; killed=%v", runner.killed)
+	}
+}
+
+// deleteAll on a profile-scoped worktree must kill both tmux sessions. The
+// worktree is force-deleted regardless, so a missed kill leaves the agent
+// process running against a directory that no longer exists.
+func TestConfirmDeleteAll_profileScopedSessionsAreKilled(t *testing.T) {
+	runner := &recordingRunner{
+		sessions: strings.Join([]string{
+			sessionRow("$1", "work-myapp-feat", "work-myapp-feat", "agent", "work", "feat"),
+			sessionRow("$2", "work-myapp-feat~sh", "work-myapp-feat", "shell", "work", "feat"),
+		}, "\n"),
+	}
+	client := tmux.NewClient(runner)
+	// No projects configured, so worktree.Delete returns an error instead of
+	// touching the filesystem — teardown of the tmux sessions must still happen.
+	cfg := &config.Config{Projects: map[string]config.ProjectConfig{}}
+
+	m := Model{
+		sesSvc:     session.NewService(client, &hooks.NoOp{}),
+		wtSvc:      worktree.NewService(cfg, worktree.NewRealWorktreeRunner(), client, &hooks.NoOp{}),
+		tmuxClient: client,
+		confirm: newConfirmModel(Item{
+			Project:        "myapp",
+			Branch:         "feat",
+			AgentSessionID: "$1",
+			ShellSessionID: "$2",
+			HasAgent:       true,
+			HasShell:       true,
+		}),
+	}
+
+	_, cmd := m.confirmDeleteAll()
+	if cmd == nil {
+		t.Fatal("confirmDeleteAll returned no command")
+	}
+	cmd() // executes the teardown closure; worktree.Delete fails harmlessly (no repo)
+
+	for _, want := range []string{"$1", "$2"} {
+		found := false
+		for _, got := range runner.killed {
+			if got == want {
+				found = true
+			}
+		}
+		if !found {
+			t.Errorf("session %s was never killed; killed=%v (dangling tmux session + processes)", want, runner.killed)
+		}
+	}
+}