Add "power" page

Signed-off-by: Hadi <[email protected]>

internal/ui/app/model.go

@@ -14,22 +14,28 @@ import (
 	bluetoothUI "github.com/anotherhadi/settuings/internal/ui/bluetooth"
 	notificationsUI "github.com/anotherhadi/settuings/internal/ui/components/notifications"
 	networkUI "github.com/anotherhadi/settuings/internal/ui/network"
+	powerUI "github.com/anotherhadi/settuings/internal/ui/power"
 	"github.com/sirupsen/logrus"
 )
 
-var pageShortcuts = func() map[string]page {
-	m := make(map[string]page, len(pageRegistry))
-	for i, e := range pageRegistry {
+// buildPageShortcuts numbers the visible pages 1..N in sidebar order, so
+// hiding a page never leaves a gap in the shortcuts. It must run after
+// config.Load, hence a function called from New rather than a package var.
+func buildPageShortcuts() map[string]page {
+	visible := visiblePages()
+	m := make(map[string]page, len(visible))
+	for i, e := range visible {
 		m[strconv.Itoa(i+1)] = e.id
 	}
 	return m
-}()
+}
 
 type Model struct {
-	page       page
-	logPath    string
-	fatalErr   error
-	logFileErr error
+	page          page
+	pageShortcuts map[string]page
+	logPath       string
+	fatalErr      error
+	logFileErr    error
 
 	width         int
 	height        int
@@ -38,6 +44,7 @@ type Model struct {
 	network       networkUI.Model
 	bluetooth     bluetoothUI.Model
 	audio         audioUI.Model
+	power         powerUI.Model
 	notifications notificationsUI.Model
 }
 
@@ -61,10 +68,12 @@ func New(initialPage string) (Model, error) {
 
 	m := Model{
 		page:          startPage,
+		pageShortcuts: buildPageShortcuts(),
 		about:         aboutUI.New(),
 		network:       networkUI.New(),
 		bluetooth:     bluetoothUI.New(),
 		audio:         audioUI.New(),
+		power:         powerUI.New(),
 		notifications: notificationsUI.New(),
 		sidebarState:  sidebarState(cfg.TUI.DefaultSidebarState),
 		logPath:       logPath,
@@ -83,7 +92,7 @@ func New(initialPage string) (Model, error) {
 func (m Model) FatalErr() error { return m.fatalErr }
 
 func (m Model) Init() tea.Cmd {
-	cmds := []tea.Cmd{m.about.Init(), m.network.Init(), m.bluetooth.Init(), m.audio.Init()}
+	cmds := []tea.Cmd{m.about.Init(), m.network.Init(), m.bluetooth.Init(), m.audio.Init(), m.power.Init()}
 	if m.page != pageAbout {
 		cmds = append(cmds, m.activatePage(m.page))
 	}

internal/ui/app/pages.go

@@ -4,11 +4,13 @@ import (
 	"strings"
 
 	tea "charm.land/bubbletea/v2"
+	"github.com/anotherhadi/settuings/internal/config"
 	"github.com/anotherhadi/settuings/internal/icons"
 	aboutUI "github.com/anotherhadi/settuings/internal/ui/about"
 	audioUI "github.com/anotherhadi/settuings/internal/ui/audio"
 	bluetoothUI "github.com/anotherhadi/settuings/internal/ui/bluetooth"
 	networkUI "github.com/anotherhadi/settuings/internal/ui/network"
+	powerUI "github.com/anotherhadi/settuings/internal/ui/power"
 )
 
 type page string
@@ -18,6 +20,7 @@ const (
 	pageNetwork   page = "Network"
 	pageBluetooth page = "Bluetooth"
 	pageAudio     page = "Audio"
+	pagePower     page = "Power"
 )
 
 // pageEntry describes a page and all its integration hooks.
@@ -103,6 +106,20 @@ var pageRegistry = []pageEntry{
 		activate:   func(m *Model) tea.Cmd { return m.audio.Activate() },
 		deactivate: func(m *Model) { m.audio.Deactivate() },
 	},
+	{
+		id:   pagePower,
+		icon: func() string { return icons.I.Power },
+
+		render: func(m *Model) string { return m.power.View().Content },
+		update: func(m *Model, msg tea.Msg) tea.Cmd {
+			updated, cmd := m.power.Update(msg)
+			m.power = updated.(powerUI.Model)
+			return cmd
+		},
+		isEditing: func(m *Model) bool { return m.power.IsEditing() },
+		resize:    func(m *Model, w, h int) { m.power.SetSize(w, h) },
+		activate:  func(m *Model) tea.Cmd { return m.power.Activate() },
+	},
 }
 
 // PageNames returns the valid page identifiers, in sidebar order, usable
@@ -125,3 +142,32 @@ func lookupPage(name string) (page, bool) {
 	}
 	return "", false
 }
+
+// visiblePages returns pageRegistry entries not listed in the user's
+// tui.hidden_pages config, preserving registry order. A page hidden this
+// way is still reachable via --page: hiding only affects the sidebar and
+// its numbered shortcuts.
+func visiblePages() []pageEntry {
+	hiddenNames := config.Global.TUI.HiddenPages
+	if len(hiddenNames) == 0 {
+		return pageRegistry
+	}
+
+	hidden := make(map[page]bool, len(hiddenNames))
+	for _, name := range hiddenNames {
+		if p, ok := lookupPage(name); ok {
+			hidden[p] = true
+		}
+	}
+	if len(hidden) == 0 {
+		return pageRegistry
+	}
+
+	visible := make([]pageEntry, 0, len(pageRegistry))
+	for _, e := range pageRegistry {
+		if !hidden[e.id] {
+			visible = append(visible, e)
+		}
+	}
+	return visible
+}

internal/ui/app/sidebar.go

@@ -62,7 +62,7 @@ func (m *Model) renderSidebar() string {
 	var items strings.Builder
 	badgeUnread := lipgloss.NewStyle().Foreground(ilovetui.S.Warning).Bold(true)
 
-	for i, entry := range pageRegistry {
+	for i, entry := range visiblePages() {
 		selected := entry.id == m.page
 		badgeStyle, textStyle := badgeNormal, textNormal
 		if selected {

internal/ui/app/update.go

@@ -47,7 +47,7 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 				m.resizeChildren()
 
 			default:
-				if p, ok := pageShortcuts[msg.String()]; ok {
+				if p, ok := m.pageShortcuts[msg.String()]; ok {
 					prev := m.page
 					m.page = p
 					if prev != p {

internal/ui/power/battery.go

@@ -0,0 +1,139 @@
+package power
+
+import (
+	"fmt"
+	"strings"
+
+	"charm.land/lipgloss/v2"
+	ilovetui "github.com/anotherhadi/ilovetui"
+	"github.com/anotherhadi/settuings/internal/power"
+)
+
+func (m *Model) handleBattery(msg batteryMsg) {
+	m.batteryLoading = false
+	m.batteryErr = msg.err
+	if msg.err != nil {
+		return
+	}
+	m.batteries = msg.batteries
+	m.ac = msg.ac
+}
+
+func (m Model) renderBattery(width int) string {
+	title := lipgloss.NewStyle().Bold(true).Render("Battery")
+
+	switch {
+	case m.batteryLoading:
+		return lipgloss.JoinVertical(lipgloss.Left, title, "", ilovetui.S.Faint.Render("Reading battery status…"))
+	case m.batteryErr != nil:
+		return lipgloss.JoinVertical(lipgloss.Left, title, "", errorStyle().Render(m.batteryErr.Error()))
+	}
+
+	lines := []string{title, ""}
+	if len(m.batteries) == 0 {
+		lines = append(lines, subtleStyle().Render("No battery detected — this looks like a desktop."))
+	}
+	for i, b := range m.batteries {
+		if i > 0 {
+			lines = append(lines, "")
+		}
+		lines = append(lines, renderBatteryInfo(b, width)...)
+	}
+
+	lines = append(lines, "", subtleStyle().Render("Power source:  ")+acLabel(m.ac))
+
+	return lipgloss.JoinVertical(lipgloss.Left, lines...)
+}
+
+func renderBatteryInfo(b power.Battery, width int) []string {
+	rows := []string{
+		subtleStyle().Render("Name:          ") + b.Name,
+		subtleStyle().Render("Status:        ") + statusLabel(b.Status),
+		subtleStyle().Render("Charge:        ") + renderBatteryBar(b.Capacity, width),
+	}
+	if remaining := timeRemainingLabel(b); remaining != "" {
+		rows = append(rows, subtleStyle().Render("Time left:     ")+remaining)
+	}
+	if b.Health >= 0 {
+		rows = append(rows, subtleStyle().Render("Health:        ")+fmt.Sprintf("%d%%", b.Health))
+	}
+	if b.CycleCount >= 0 {
+		rows = append(rows, subtleStyle().Render("Cycle count:   ")+fmt.Sprintf("%d", b.CycleCount))
+	}
+	if b.Technology != "" {
+		rows = append(rows, subtleStyle().Render("Technology:    ")+b.Technology)
+	}
+	if model := strings.TrimSpace(b.Manufacturer + " " + b.Model); model != "" {
+		rows = append(rows, subtleStyle().Render("Model:         ")+model)
+	}
+	return rows
+}
+
+func timeRemainingLabel(b power.Battery) string {
+	switch {
+	case b.TimeToEmpty != "":
+		return b.TimeToEmpty + " until empty"
+	case b.TimeToFull != "":
+		return b.TimeToFull + " until full"
+	}
+	return ""
+}
+
+func statusLabel(status string) string {
+	switch status {
+	case "Charging":
+		return successStyle().Render("⚡ Charging")
+	case "Full":
+		return successStyle().Render(status)
+	case "Discharging":
+		return status
+	default:
+		return mutedStyle().Render(status)
+	}
+}
+
+func acLabel(ac power.ACStatus) string {
+	switch {
+	case !ac.Present:
+		return mutedStyle().Render("unknown")
+	case ac.Online:
+		return successStyle().Render("connected")
+	default:
+		return mutedStyle().Render("disconnected")
+	}
+}
+
+// renderBatteryBar draws a static block-bar gauge for the charge level,
+// colored by how low it is, same spirit as the audio page's volume bar.
+func renderBatteryBar(pct, width int) string {
+	if pct < 0 {
+		return subtleStyle().Render("unknown")
+	}
+
+	barWidth := width / 3
+	switch {
+	case barWidth < 10:
+		barWidth = 10
+	case barWidth > 30:
+		barWidth = 30
+	}
+
+	filled := pct * barWidth / 100
+	switch {
+	case filled > barWidth:
+		filled = barWidth
+	case filled < 0:
+		filled = 0
+	}
+	bar := strings.Repeat("█", filled) + strings.Repeat("░", barWidth-filled)
+
+	color := ilovetui.S.Success
+	switch {
+	case pct <= 15:
+		color = ilovetui.S.Error
+	case pct <= 35:
+		color = ilovetui.S.Warning
+	}
+	gauge := lipgloss.NewStyle().Foreground(color).Render("[" + bar + "]")
+	return fmt.Sprintf("%s %3d%%", gauge, pct)
+}

internal/ui/power/commands.go

@@ -0,0 +1,40 @@
+package power
+
+import (
+	"time"
+
+	tea "charm.land/bubbletea/v2"
+	"github.com/anotherhadi/settuings/internal/power"
+)
+
+const tickInterval = 5 * time.Second
+
+func tickCmd() tea.Cmd {
+	return tea.Tick(tickInterval, func(time.Time) tea.Msg { return tickMsg{} })
+}
+
+func checkCmd() tea.Cmd {
+	return func() tea.Msg { return checkMsg{err: power.CheckAvailable()} }
+}
+
+func fetchProfilesCmd() tea.Cmd {
+	return func() tea.Msg {
+		profiles, err := power.ListProfiles()
+		return profilesMsg{profiles: profiles, err: err}
+	}
+}
+
+func setProfileCmd(name string) tea.Cmd {
+	return func() tea.Msg { return setProfileMsg{err: power.SetActive(name)} }
+}
+
+func fetchBatteryCmd() tea.Cmd {
+	return func() tea.Msg {
+		batteries, err := power.ReadBatteries()
+		if err != nil {
+			return batteryMsg{err: err}
+		}
+		ac, err := power.ReadAC()
+		return batteryMsg{batteries: batteries, ac: ac, err: err}
+	}
+}

internal/ui/power/keymap.go

@@ -0,0 +1,35 @@
+package power
+
+import (
+	"charm.land/bubbles/v2/key"
+	"github.com/anotherhadi/settuings/internal/keys"
+)
+
+// powerKeyMap renders the bottom help bar.
+type powerKeyMap struct {
+	m     Model
+	width int
+}
+
+func (k powerKeyMap) ShortHelp() []key.Binding {
+	g := keys.Keys.Global
+	p := keys.Keys.Power
+	if k.m.checkErr != nil {
+		return []key.Binding{p.Refresh, g.Help}
+	}
+	return []key.Binding{g.Up, g.Down, p.Select, p.Refresh, g.Help}
+}
+
+func (k powerKeyMap) FullHelp() [][]key.Binding {
+	g := keys.Keys.Global
+	p := keys.Keys.Power
+
+	var bindings []key.Binding
+	if k.m.checkErr != nil {
+		bindings = []key.Binding{p.Refresh}
+	} else {
+		bindings = []key.Binding{g.Up, g.Down, p.Select, p.Refresh}
+	}
+	bindings = append(bindings, g.CommonBindings()...)
+	return keys.ChunkByWidth(bindings, k.width)
+}

internal/ui/power/messages.go

@@ -0,0 +1,23 @@
+package power
+
+import "github.com/anotherhadi/settuings/internal/power"
+
+// checkMsg carries the result of power.CheckAvailable (powerprofilesctl).
+type checkMsg struct{ err error }
+
+// tickMsg triggers a periodic refresh of profiles + battery while this page
+// is active.
+type tickMsg struct{}
+
+type profilesMsg struct {
+	profiles []power.Profile
+	err      error
+}
+
+type setProfileMsg struct{ err error }
+
+type batteryMsg struct {
+	batteries []power.Battery
+	ac        power.ACStatus
+	err       error
+}

internal/ui/power/model.go

@@ -0,0 +1,61 @@
+// Package power provides the "Power" TUI page: power-profile selection (via
+// powerprofilesctl) and battery/AC status, in the same spirit as the
+// bluetooth page's controller power + device state.
+package power
+
+import (
+	"charm.land/bubbles/v2/help"
+	tea "charm.land/bubbletea/v2"
+	ilovetui "github.com/anotherhadi/ilovetui"
+	"github.com/anotherhadi/settuings/internal/power"
+)
+
+type Model struct {
+	width  int
+	height int
+	help   help.Model
+
+	checkErr error // reason powerprofilesctl is unusable; nil once confirmed OK
+	checked  bool
+
+	profilesLoading bool
+	profilesErr     error
+	profiles        []power.Profile
+	cursor          int
+	pending         bool
+	feedback        string
+
+	batteryLoading bool
+	batteryErr     error
+	batteries      []power.Battery
+	ac             power.ACStatus
+}
+
+func New() Model {
+	return Model{
+		help:            ilovetui.NewHelp(),
+		profilesLoading: true,
+		batteryLoading:  true,
+	}
+}
+
+func (m Model) Init() tea.Cmd {
+	return nil
+}
+
+// Activate is called every time the user navigates onto this page. It
+// re-checks powerprofilesctl availability, fetches profiles + battery
+// state, and starts the periodic auto-refresh loop.
+func (m *Model) Activate() tea.Cmd {
+	return tea.Batch(checkCmd(), fetchProfilesCmd(), fetchBatteryCmd(), tickCmd())
+}
+
+func (m Model) IsEditing() bool {
+	return false
+}
+
+func (m *Model) SetSize(w, h int) {
+	m.width = w
+	m.height = h
+	m.help.SetWidth(w - 2)
+}

internal/ui/power/profiles.go

@@ -0,0 +1,148 @@
+package power
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	"charm.land/bubbles/v2/key"
+	tea "charm.land/bubbletea/v2"
+	"charm.land/lipgloss/v2"
+	ilovetui "github.com/anotherhadi/ilovetui"
+	"github.com/anotherhadi/settuings/internal/icons"
+	"github.com/anotherhadi/settuings/internal/keys"
+	"github.com/anotherhadi/settuings/internal/power"
+)
+
+func (m *Model) handleProfiles(msg profilesMsg) {
+	m.profilesLoading = false
+	m.profilesErr = msg.err
+	if msg.err != nil {
+		return
+	}
+	m.profiles = msg.profiles
+	if m.cursor >= len(m.profiles) {
+		m.cursor = max(0, len(m.profiles)-1)
+	}
+}
+
+func (m *Model) handleSetProfile(msg setProfileMsg) tea.Cmd {
+	m.pending = false
+	if msg.err != nil {
+		m.feedback = msg.err.Error()
+		return nil
+	}
+	m.feedback = ""
+	return fetchProfilesCmd()
+}
+
+func (m Model) selectedProfile() *power.Profile {
+	if m.cursor < 0 || m.cursor >= len(m.profiles) {
+		return nil
+	}
+	return &m.profiles[m.cursor]
+}
+
+func (m *Model) updateProfiles(msg tea.Msg) tea.Cmd {
+	keyMsg, ok := msg.(tea.KeyPressMsg)
+	if !ok {
+		return nil
+	}
+	if m.checkErr != nil {
+		if key.Matches(keyMsg, keys.Keys.Power.Refresh) {
+			return checkCmd()
+		}
+		return nil
+	}
+
+	g := keys.Keys.Global
+	p := keys.Keys.Power
+
+	switch {
+	case key.Matches(keyMsg, g.Up):
+		if m.cursor > 0 {
+			m.cursor--
+		}
+	case key.Matches(keyMsg, g.Down):
+		if m.cursor < len(m.profiles)-1 {
+			m.cursor++
+		}
+	case key.Matches(keyMsg, p.Refresh):
+		return tea.Batch(fetchProfilesCmd(), fetchBatteryCmd())
+	case key.Matches(keyMsg, p.Select):
+		return m.applySelected()
+	}
+	return nil
+}
+
+func (m *Model) applySelected() tea.Cmd {
+	sel := m.selectedProfile()
+	if sel == nil || sel.Active {
+		return nil
+	}
+	m.pending = true
+	return setProfileCmd(sel.Name)
+}
+
+func (m Model) renderProfiles() string {
+	title := lipgloss.NewStyle().Bold(true).Render("Power Profile")
+
+	switch {
+	case !m.checked:
+		return lipgloss.JoinVertical(lipgloss.Left, title, "", ilovetui.S.Faint.Render("Checking powerprofilesctl…"))
+	case m.checkErr != nil:
+		return lipgloss.JoinVertical(lipgloss.Left, title, "", subtleStyle().Render(unavailableHint(m.checkErr)))
+	case m.profilesLoading:
+		return lipgloss.JoinVertical(lipgloss.Left, title, "", ilovetui.S.Faint.Render("Loading profiles…"))
+	case m.profilesErr != nil:
+		return lipgloss.JoinVertical(lipgloss.Left, title, "", errorStyle().Render(m.profilesErr.Error()))
+	}
+
+	lines := []string{title, ""}
+	for i, p := range m.profiles {
+		lines = append(lines, m.renderProfileRow(p, i == m.cursor))
+	}
+	switch {
+	case m.pending:
+		lines = append(lines, "", mutedStyle().Render("applying…"))
+	case m.feedback != "":
+		lines = append(lines, "", errorStyle().Render(m.feedback))
+	}
+	return lipgloss.JoinVertical(lipgloss.Left, lines...)
+}
+
+func (m Model) renderProfileRow(p power.Profile, selected bool) string {
+	textStyle := lipgloss.NewStyle().Foreground(ilovetui.S.Text)
+	if selected {
+		textStyle = textStyle.Bold(true).Foreground(ilovetui.S.Primary)
+	}
+	cursor := "  "
+	if selected {
+		cursor = "> "
+	}
+	check := " "
+	if p.Active {
+		check = successStyle().Render(icons.I.Check)
+	}
+	return fmt.Sprintf("%s%s%s", cursor, check, textStyle.Render(displayName(p.Name)))
+}
+
+// displayName turns a powerprofilesctl identifier ("power-saver") into a
+// readable label ("Power Saver").
+func displayName(name string) string {
+	words := strings.Split(strings.ReplaceAll(name, "-", " "), " ")
+	for i, w := range words {
+		if w == "" {
+			continue
+		}
+		words[i] = strings.ToUpper(w[:1]) + w[1:]
+	}
+	return strings.Join(words, " ")
+}
+
+func unavailableHint(err error) string {
+	if errors.Is(err, power.ErrNotFound) {
+		return "powerprofilesctl was not found in PATH.\nInstall power-profiles-daemon to select a profile."
+	}
+	return err.Error()
+}

internal/ui/power/style.go

@@ -0,0 +1,22 @@
+package power
+
+import (
+	"charm.land/lipgloss/v2"
+	ilovetui "github.com/anotherhadi/ilovetui"
+)
+
+func errorStyle() lipgloss.Style {
+	return lipgloss.NewStyle().Foreground(ilovetui.S.Error)
+}
+
+func successStyle() lipgloss.Style {
+	return lipgloss.NewStyle().Foreground(ilovetui.S.Success)
+}
+
+func subtleStyle() lipgloss.Style {
+	return lipgloss.NewStyle().Foreground(ilovetui.S.Subtle)
+}
+
+func mutedStyle() lipgloss.Style {
+	return lipgloss.NewStyle().Foreground(ilovetui.S.Muted)
+}

internal/ui/power/tabbar.go

@@ -0,0 +1,29 @@
+package power
+
+import (
+	"strings"
+
+	"charm.land/lipgloss/v2"
+	ilovetui "github.com/anotherhadi/ilovetui"
+	"github.com/anotherhadi/settuings/internal/icons"
+)
+
+// renderTabBar draws a header matching the bluetooth page's tab bar: a
+// single always-active label, since this page has no tabs of its own.
+func renderTabBar(width int) string {
+	style := lipgloss.NewStyle().Bold(true).Foreground(ilovetui.S.Primary).Padding(0, 2).
+		Border(lipgloss.NormalBorder(), false, false, true, false).
+		BorderForeground(ilovetui.S.Primary)
+
+	label := style.Render(icons.I.Power + "Power")
+
+	filler := width - lipgloss.Width(label)
+	if filler > 0 {
+		label = lipgloss.JoinHorizontal(lipgloss.Bottom, label,
+			lipgloss.NewStyle().
+				Border(lipgloss.NormalBorder(), false, false, true, false).
+				BorderForeground(ilovetui.S.Primary).
+				Render(strings.Repeat(" ", filler)))
+	}
+	return label
+}

internal/ui/power/update.go

@@ -0,0 +1,45 @@
+package power
+
+import (
+	"charm.land/bubbles/v2/key"
+	tea "charm.land/bubbletea/v2"
+	"github.com/anotherhadi/settuings/internal/keys"
+)
+
+func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	switch msg := msg.(type) {
+	case checkMsg:
+		wasUnavailable := m.checkErr != nil
+		m.checked = true
+		m.checkErr = msg.err
+		if msg.err == nil && wasUnavailable {
+			// recovered: resume fetching profiles
+			return m, fetchProfilesCmd()
+		}
+		return m, nil
+
+	case tickMsg:
+		cmds := []tea.Cmd{tickCmd(), fetchBatteryCmd()}
+		if m.checkErr == nil {
+			cmds = append(cmds, fetchProfilesCmd())
+		}
+		return m, tea.Batch(cmds...)
+
+	case profilesMsg:
+		m.handleProfiles(msg)
+		return m, nil
+	case setProfileMsg:
+		return m, m.handleSetProfile(msg)
+	case batteryMsg:
+		m.handleBattery(msg)
+		return m, nil
+
+	case tea.KeyPressMsg:
+		if key.Matches(msg, keys.Keys.Global.Help) {
+			m.help.ShowAll = !m.help.ShowAll
+			return m, nil
+		}
+		return m, m.updateProfiles(msg)
+	}
+	return m, nil
+}

internal/ui/power/view.go

@@ -0,0 +1,69 @@
+package power
+
+import (
+	"strings"
+
+	tea "charm.land/bubbletea/v2"
+	"charm.land/lipgloss/v2"
+	ilovetui "github.com/anotherhadi/ilovetui"
+)
+
+func windowStyle() lipgloss.Style {
+	return lipgloss.NewStyle().
+		Border(lipgloss.RoundedBorder()).
+		BorderForeground(ilovetui.S.Subtle).
+		Padding(1, 2)
+}
+
+func (m Model) View() tea.View {
+	statusBar := m.renderStatusBar()
+	innerW, innerH := m.contentBudget()
+	tabBar := renderTabBar(innerW)
+
+	box := lipgloss.NewStyle().Width(innerW).Height(innerH).Render(m.renderBody(innerW))
+	content := windowStyle().Render(lipgloss.JoinVertical(lipgloss.Left, tabBar, box))
+
+	return tea.NewView(lipgloss.JoinVertical(lipgloss.Left, content, statusBar))
+}
+
+func (m Model) renderStatusBar() string {
+	km := powerKeyMap{m: m, width: m.width}
+	return lipgloss.NewStyle().Padding(0, 1).Render(m.help.View(km))
+}
+
+// contentBudget returns the exact space available inside the bordered page
+// box, below the tab bar and above the status bar.
+func (m Model) contentBudget() (w, h int) {
+	frameW := windowStyle().GetHorizontalFrameSize()
+	frameH := windowStyle().GetVerticalFrameSize()
+	w = m.width - frameW
+
+	statusH := strings.Count(m.renderStatusBar(), "\n") + 1
+	tabBarH := lipgloss.Height(renderTabBar(w))
+
+	h = m.height - tabBarH - frameH - statusH
+	if h < 1 {
+		h = 1
+	}
+	return w, h
+}
+
+// renderBody lays out the two sections side by side once there's enough
+// width for both to breathe, and stacks them otherwise.
+func (m Model) renderBody(width int) string {
+	const splitThreshold = 60
+	const gap = 3
+
+	if width < splitThreshold {
+		return lipgloss.JoinVertical(lipgloss.Left, m.renderProfiles(), "", m.renderBattery(width))
+	}
+
+	leftW := width / 3
+	if leftW < 20 {
+		leftW = 20
+	}
+	rightW := width - leftW - gap
+	left := lipgloss.NewStyle().Width(leftW).Render(m.renderProfiles())
+	right := lipgloss.NewStyle().Width(rightW).Render(m.renderBattery(rightW))
+	return lipgloss.JoinHorizontal(lipgloss.Top, left, strings.Repeat(" ", gap), right)
+}