feat: compact menu layout and merge namespaces across all envs

- Reduce menu item height from 3 rows to 1 (no description, no spacing)
- Merge namespaces from all configured envs so namespace-only-in-prod is no longer missing

cmd/kctl-tui/full.go

@@ -47,7 +47,7 @@ type fullModel struct {
 }
 
 func newFullModel() *fullModel {
-	l := list.New(nil, list.NewDefaultDelegate(), 0, 0)
+	l := list.New(nil, newCompactDelegate(), 0, 0)
 	l.Title = "kctl-tui"
 	l.SetShowStatusBar(false)
 	l.SetFilteringEnabled(false)
@@ -210,23 +210,21 @@ func (m *fullModel) handleSelect() (tea.Model, tea.Cmd) {
 	return m, nil
 }
 
-// bootstrapContext resolves a kubectl context purely to discover
-// namespaces/labels for the team/namespace screens. The first configured
-// env is used as a stable default for this discovery step, since
-// namespace names are assumed to be identical across envs.
-func (m *fullModel) bootstrapContext() string {
-	if len(m.cfg.Envs) == 0 {
-		return ""
-	}
-	return m.cfg.ResolveContext(m.cfg.Envs[0], m.selectedContext)
-}
-
 func (m *fullModel) loadTeams() tea.Msg {
-	namespaces, err := kubeexec.GetNamespacesWithLabels(m.bootstrapContext())
-	if err != nil {
-		return errMsg{err}
+	merged := map[string]map[string]string{}
+	for _, env := range m.cfg.Envs {
+		ctx := m.cfg.ResolveContext(env, m.selectedContext)
+		namespaces, err := kubeexec.GetNamespacesWithLabels(ctx)
+		if err != nil {
+			continue
+		}
+		for ns, labels := range namespaces {
+			if _, exists := merged[ns]; !exists {
+				merged[ns] = labels
+			}
+		}
 	}
-	return *toTeamsLoadedMsg(namespaces, m.cfg.TeamLabelKey)
+	return *toTeamsLoadedMsg(merged, m.cfg.TeamLabelKey)
 }
 
 func (m *fullModel) loadTeamsFor(namespaces map[string]map[string]string) tea.Cmd {

cmd/kctl-tui/list_item.go

@@ -3,6 +3,8 @@
 
 package main
 
+import "github.com/charmbracelet/bubbles/list"
+
 // simpleItem is a minimal implementation of list.Item used for all
 // selection screens (contexts, teams, namespaces, menu actions).
 type simpleItem struct {
@@ -13,3 +15,13 @@ type simpleItem struct {
 func (i simpleItem) Title() string       { return i.label }
 func (i simpleItem) Description() string { return "" }
 func (i simpleItem) FilterValue() string { return i.label }
+
+// newCompactDelegate returns a list delegate that renders each item as a
+// single line with no extra spacing, maximizing the number of visible
+// entries in the terminal.
+func newCompactDelegate() list.DefaultDelegate {
+	d := list.NewDefaultDelegate()
+	d.ShowDescription = false
+	d.SetSpacing(0)
+	return d
+}

cmd/kctl-tui/panel.go

@@ -83,7 +83,7 @@ func newPanelModel(context, ns, team string) *panelModel {
 	cfgPath, _ := config.DefaultPath()
 	cfg, loadErr := config.Load(cfgPath)
 
-	l := list.New(nil, list.NewDefaultDelegate(), 0, 0)
+	l := list.New(nil, newCompactDelegate(), 0, 0)
 	l.SetShowStatusBar(false)
 	l.SetFilteringEnabled(false)