feat: the right pane describes what's selected in the pane you're in

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/ui/app/app.go

@@ -163,9 +163,11 @@ type Model struct {
 	clip      Clipboard
 	clipClear time.Duration
 	openURL   func(string) error
-	// fields is the fourth pane for anything but a secret (now: an
-	// account), with each account's groups as they load (fields.go).
+	// fields is the fourth pane for anything but a secret, with each
+	// account's groups as they load; lastLeft is the left pane it
+	// describes while the fourth has focus (fields.go).
 	fields   panes.Fields
+	lastLeft pane
 	groups   map[string]groupsState
 	getenv   func(string) string
 	nvimOpen func(server, path string, line int) error // edit.go
@@ -731,7 +733,9 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	m.waiting = 0
 	m.askHandlerSetup()
 	m.keys.Login.SetEnabled(m.loginFor() != nil)
-	m.detail.SetMessage(m.selectedProblem())
+	if m.focus != paneDetail {
+		m.lastLeft = m.focus
+	}
 	cmds = append(cmds, m.syncFields())
 	if m.anyLoading() && !m.spinning {
 		m.spinning = true
@@ -799,13 +803,14 @@ func (m *Model) handleKey(msg tea.KeyPressMsg) (cmd tea.Cmd, quit bool) {
 		m.jump(false)
 	case key.Matches(msg, k.NextPane):
 		m.focus = (m.focus + 1) % paneCount
-		if m.focus == paneContainers && m.fields.Shown() {
+		if r, ok := m.sources.Selected(); ok && m.focus == paneContainers && r.kind == rowGroup {
 			m.focus = paneDetail // an account's row: nothing between
 		}
 	case key.Matches(msg, k.PrevPane):
-		m.focus = (m.focus + paneCount - 1) % paneCount
-		if m.focus == paneSecrets && m.fields.Shown() {
-			m.focus = paneSources
+		if m.focus == paneDetail {
+			m.focus = m.lastLeft // back to what it describes
+		} else {
+			m.focus = (m.focus + paneCount - 1) % paneCount
 		}
 	case key.Matches(msg, k.Pane1):
 		m.focus = paneSources