Upgrade MyGo to v0.5.5

Elements are now pass-scoped value handles: tests that read bounds
after a frame bind a ui.Handle. pixel tells frames apart by the build
pass's root, since the Tester clock no longer moves on its own.

Fix the regressions the upgrade brought:
- Clipboard reads in input handlers go through c.Services().
- MyGo notes an overlay's opener after building it, so AutoFocus
  inside lost it; pixel.AutoFocus focuses through a Handle, and
  archtest bans the raw call. Dialogs hand the focus back again.
- Elements around a press stay hovered: Tooltip tells a press-given
  focus by focus arriving under the pointer.
- The web host moves the Tester clock with real time, at most 500 ms
  a call, and gives components the real clock.

The gallery's source index also accepts CRLF checkouts.

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

data/accordion.go

@@ -16,7 +16,7 @@ type AccordionOptions struct {
 }
 
 type AccordionResult struct {
-	Element *ui.Element
+	Element ui.Element
 	Changed bool
 }
 

data/bestiary.go

@@ -26,7 +26,7 @@ type BestiaryOptions struct {
 }
 
 // Bestiary is a monster card; unseen ones are silhouettes.
-func Bestiary(c *ui.Context, m Monster, o BestiaryOptions) *ui.Element {
+func Bestiary(c *ui.Context, m Monster, o BestiaryOptions) ui.Element {
 	k := pixel.K(c)
 	sc := pixel.Or("Bestiary Scale", o.Scale, 2)
 	if m.Sprite == nil || sc > 4 {

data/cardgrid.go

@@ -13,7 +13,7 @@ type CardGridOptions struct {
 }
 
 // CardGrid fits as many card columns as width allows.
-func CardGrid(c *ui.Context, n int, o CardGridOptions, card func(i int)) *ui.Element {
+func CardGrid(c *ui.Context, n int, o CardGridOptions, card func(i int)) ui.Element {
 	mw := pixel.Or("CardGrid MinWidth", o.MinWidth, 96)
 	box := ui.Box(c).FillWidth()
 	w, check := pixel.WrapWidth(c, box)

data/carousel.go

@@ -19,7 +19,7 @@ type CarouselOptions struct {
 }
 
 type CarouselResult struct {
-	Element *ui.Element
+	Element ui.Element
 	Changed bool
 }
 

data/collapsible.go

@@ -13,7 +13,7 @@ type CollapsibleOptions struct {
 }
 
 type CollapsibleResult struct {
-	Element *ui.Element
+	Element ui.Element
 	Changed bool
 }
 
@@ -25,7 +25,7 @@ func Collapsible(c *ui.Context, title string, open *bool, o CollapsibleOptions,
 	col.Children(func() {
 		// The base turns before it learns it is off.
 		v := *open
-		shell, base, st := pixel.Shell(c, func() *ui.Element {
+		shell, base, st := pixel.Shell(c, func() ui.Element {
 			return ui.CollapsibleBase(c, &v).Trigger.Label(title).Disabled(o.Disabled)
 		})
 		if res.Changed = v != *open && !base.IsDisabled(); res.Changed {

data/data.go

@@ -28,7 +28,7 @@ var (
 )
 
 // well sinks box and finishes it as st says.
-func well(c *ui.Context, box *ui.Element, st pixel.State) {
+func well(c *ui.Context, box ui.Element, st pixel.State) {
 	k := pixel.K(c)
 	box.Padding(k.D(2)).Draw(func(p *ui.Painter, r ui.Rect) {
 		g := k.Canvas(p, r)

data/descriptionlist.go

@@ -13,7 +13,7 @@ type DescriptionListOptions struct {
 }
 
 // DescriptionList sets terms beside their descriptions.
-func DescriptionList(c *ui.Context, pairs [][2]string, o DescriptionListOptions) *ui.Element {
+func DescriptionList(c *ui.Context, pairs [][2]string, o DescriptionListOptions) ui.Element {
 	k := pixel.K(c)
 	tw := pixel.Or("DescriptionList TermWidth", o.TermWidth, 80)
 	return ui.Column(c).FillWidth().Gap(k.D(4)).Children(func() {

data/feed.go

@@ -16,7 +16,7 @@ type Activity struct {
 type FeedOptions struct{}
 
 // Feed lists activity: icon, text and time, dotted apart.
-func Feed(c *ui.Context, entries []Activity, o FeedOptions) *ui.Element {
+func Feed(c *ui.Context, entries []Activity, o FeedOptions) ui.Element {
 	k := pixel.K(c)
 	return ui.Column(c).FillWidth().Children(func() {
 		for i, a := range entries {

data/filterbar.go

@@ -16,7 +16,7 @@ type FilterBarOptions struct {
 }
 
 type FilterBarResult struct {
-	Element *ui.Element
+	Element ui.Element
 	Changed bool
 }
 

data/gridview.go

@@ -18,7 +18,7 @@ type GridViewOptions struct {
 }
 
 type GridViewResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Submitted is Enter or a double click on an item.
 	Changed, Submitted bool
 }

data/infinitelist.go

@@ -17,7 +17,7 @@ type InfiniteListOptions struct {
 }
 
 type InfiniteListResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// More asks for rows past the n there are.
 	More bool
 }
@@ -42,7 +42,7 @@ func InfiniteList(c *ui.Context, text string, n int, o InfiniteListOptions, row
 	if o.Done {
 		rows = n
 	}
-	var e *ui.Element
+	var e ui.Element
 	box.Children(func() {
 		e = ui.List(c, &s.list, rows, pixel.Lazy(c, func(i int) {
 			if i < n {

data/inventory.go

@@ -16,7 +16,7 @@ type InventoryOptions struct {
 }
 
 type InventoryResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Swapped reports two slots traded by a drag.
 	Changed, Swapped bool
 }

data/itemslot.go

@@ -26,7 +26,7 @@ type ItemSlotOptions struct {
 }
 
 // ItemSlot shows an item, count, rarity edge and cooldown.
-func ItemSlot(c *ui.Context, it Item, o ItemSlotOptions) *ui.Element {
+func ItemSlot(c *ui.Context, it Item, o ItemSlotOptions) ui.Element {
 	k := pixel.K(c)
 	o.check()
 	return ui.Box(c).Role(ui.RoleImage).Label(it.String()).Size(k.D(SlotSize), k.D(SlotSize)).Draw(func(p *ui.Painter, r ui.Rect) {

data/leaderboard.go

@@ -23,7 +23,7 @@ type LeaderboardOptions struct {
 }
 
 // Leaderboard ranks scores; the top three wear medals.
-func Leaderboard(c *ui.Context, scores []Score, o LeaderboardOptions) *ui.Element {
+func Leaderboard(c *ui.Context, scores []Score, o LeaderboardOptions) ui.Element {
 	k := pixel.K(c)
 	if o.Player < -1 || o.Player >= len(scores) {
 		panic(fmt.Sprintf("data: Leaderboard Player %d of %d", o.Player, len(scores)))

data/list.go

@@ -15,7 +15,7 @@ type ListOptions struct {
 }
 
 type ListResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Submitted is Enter or a double click on a row.
 	Changed, Submitted bool
 }
@@ -33,7 +33,7 @@ func List(c *ui.Context, text string, n int, selected *int, o ListOptions, name
 	if off {
 		st.Selected = nil
 	}
-	var e *ui.Element
+	var e ui.Element
 	box.Children(func() {
 		e = ui.List(c, st, n, pixel.Lazy(c, func(i int) {
 			on := i == *selected

data/matrix.go

@@ -14,7 +14,7 @@ type MatrixOptions struct {
 }
 
 type MatrixResult struct {
-	Element *ui.Element
+	Element ui.Element
 	Changed bool
 }
 

data/outline.go

@@ -15,7 +15,7 @@ type OutlineOptions struct {
 }
 
 type OutlineResult struct {
-	Element            *ui.Element
+	Element            ui.Element
 	Changed, Submitted bool
 }
 
@@ -47,7 +47,7 @@ func Outline[K comparable](c *ui.Context, text string, roots []K, children func(
 	if off {
 		st.list.Selected = nil
 	}
-	var e *ui.Element
+	var e ui.Element
 	box.Children(func() {
 		e = ui.List(c, &st.list, len(rows), pixel.Lazy(c, func(i int) {
 			r, on, ink := rows[i], i == st.at, pixel.Ink

data/pager.go

@@ -20,7 +20,7 @@ type PagerOptions struct {
 }
 
 type PagerResult struct {
-	Element *ui.Element
+	Element ui.Element
 	Changed bool
 }
 

data/propertygrid.go

@@ -27,7 +27,7 @@ type PropertyGridOptions struct {
 }
 
 type PropertyGridResult struct {
-	Element *ui.Element
+	Element ui.Element
 	Changed bool
 }
 

data/sortable.go

@@ -16,7 +16,7 @@ type SortableOptions struct {
 }
 
 type SortableResult struct {
-	Element *ui.Element
+	Element ui.Element
 	Changed bool
 }
 
@@ -33,7 +33,7 @@ func Sortable(c *ui.Context, text string, items *[]string, o SortableOptions) So
 	k := pixel.K(c)
 	n := len(*items)
 	off := o.Disabled || pixel.Current(c).Inert
-	shell, base, st := pixel.Shell(c, func() *ui.Element {
+	shell, base, st := pixel.Shell(c, func() ui.Element {
 		return ui.Box(c).Focusable().Role(ui.RoleList).Label(text).Disabled(o.Disabled)
 	})
 	s := ui.Local(base, sortKey{}, func() sorting { return sorting{} })

data/statcompare.go

@@ -18,7 +18,7 @@ type Change struct {
 type StatCompareOptions struct{}
 
 // StatCompare lists stats old → new with ▲▼ deltas.
-func StatCompare(c *ui.Context, changes []Change, o StatCompareOptions) *ui.Element {
+func StatCompare(c *ui.Context, changes []Change, o StatCompareOptions) ui.Element {
 	k := pixel.K(c)
 	lw, ow, nw, dw := 0, 0, 0, 0
 	deltas := make([]string, len(changes))

data/table.go

@@ -28,7 +28,7 @@ type TableOptions struct {
 }
 
 type TableResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Sorted reports a header click; sort the rows by *sort.
 	Changed, Submitted, Sorted bool
 }
@@ -51,11 +51,11 @@ func Table(c *ui.Context, text string, cols []Column, rows int, sort *Sort, sele
 		st.Selected = nil
 	}
 	res := TableResult{Element: box}
-	var list *ui.Element
+	var list ui.Element
 	box.Children(func() {
 		ui.Row(c).FocusGroup(ui.Horizontal).Role(ui.RoleRow).Children(func() {
 			for i, col := range cols {
-				shell, base, hs := pixel.Shell(c, func() *ui.Element {
+				shell, base, hs := pixel.Shell(c, func() ui.Element {
 					return ui.ButtonBase(c).Role(ui.RoleColumnHeader).Label(col.Title).Disabled(o.Disabled)
 				})
 				if base.Clicked() {

data/timeline.go

@@ -15,7 +15,7 @@ type Event struct {
 type TimelineOptions struct{}
 
 // Timeline strings dated events down a line of markers.
-func Timeline(c *ui.Context, events []Event, o TimelineOptions) *ui.Element {
+func Timeline(c *ui.Context, events []Event, o TimelineOptions) ui.Element {
 	k := pixel.K(c)
 	return ui.Column(c).FillWidth().Children(func() {
 		for i, ev := range events {

data/transfer.go

@@ -18,7 +18,7 @@ type TransferOptions struct {
 }
 
 type TransferResult struct {
-	Element *ui.Element
+	Element ui.Element
 	Changed bool
 }
 

data/tree.go

@@ -25,7 +25,7 @@ type TreeOptions struct {
 }
 
 type TreeResult struct {
-	Element          *ui.Element
+	Element          ui.Element
 	Changed, Toggled bool
 }
 
@@ -55,7 +55,7 @@ func Tree(c *ui.Context, text string, roots []TreeNode, selected *string, o Tree
 	for i := range roots {
 		tops = append(tops, strconv.Itoa(i))
 	}
-	shell, base, st := pixel.Shell(c, func() *ui.Element {
+	shell, base, st := pixel.Shell(c, func() ui.Element {
 		return ui.Box(c).Focusable().Role(ui.RoleTree).Label(text).Disabled(o.Disabled)
 	})
 	opened := ui.Local(base, treeKey{}, func() map[string]bool { return map[string]bool{} })