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>

tabletop/bingocard.go

@@ -16,7 +16,7 @@ type BingoCardOptions struct {
 }
 
 type BingoCardResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Bingo is the first full line, this frame.
 	Changed, Bingo bool
 }

tabletop/cardhand.go

@@ -15,7 +15,7 @@ type CardHandOptions struct {
 }
 
 type CardHandResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Played is the card played this frame, else -1.
 	Played int
 }
@@ -49,7 +49,7 @@ func CardHand(c *ui.Context, text string, cards []Card, o CardHandOptions) CardH
 	n := len(cards)
 	w := max(cardW, fan*(n-1)+cardW)
 	res.Element = col.Children(func() {
-		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.RoleGroup).Label(text).Disabled(o.Disabled)
 		})
 		*cur = max(0, min(*cur, n-1))

tabletop/chessboard.go

@@ -39,7 +39,7 @@ type ChessboardOptions struct {
 }
 
 type ChessboardResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Moved is this frame's move, From one square To another.
 	Moved    bool
 	From, To int

tabletop/coinflip.go

@@ -23,7 +23,7 @@ var (
 const coinUp = 18
 
 // CoinFlip tosses a coin on a new Cue.
-func CoinFlip(c *ui.Context, text string, heads bool, o CoinFlipOptions) *ui.Element {
+func CoinFlip(c *ui.Context, text string, heads bool, o CoinFlipOptions) ui.Element {
 	k := pixel.K(c)
 	word := k.Msg("tails")
 	if heads {

tabletop/deck.go

@@ -15,7 +15,7 @@ type DeckOptions struct {
 }
 
 type DeckResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Drawn is a card taken this frame.
 	Drawn bool
 }
@@ -28,7 +28,7 @@ func Deck(c *ui.Context, text string, count int, o DeckOptions) DeckResult {
 		panic(fmt.Sprintf("tabletop: Deck of %d", count))
 	}
 	left := fmt.Sprintf(k.Msg("cards_left"), count)
-	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.RoleButton).Label(text).Description(left).Disabled(o.Disabled || count == 0)
 	})
 	res := DeckResult{Element: shell, Drawn: !base.IsDisabled() && base.Clicked()}

tabletop/dice.go

@@ -18,7 +18,7 @@ type DiceOptions struct {
 var hop = [...]int{0, 3, 5, 6, 6, 5, 3, 1}
 
 // Dice is a d6 showing value; new Cues tumble it.
-func Dice(c *ui.Context, text string, value int, o DiceOptions) *ui.Element {
+func Dice(c *ui.Context, text string, value int, o DiceOptions) ui.Element {
 	k := pixel.K(c)
 	if value < 1 || value > 6 {
 		panic(fmt.Sprintf("tabletop: Dice value %d", value))

tabletop/dicetray.go

@@ -14,7 +14,7 @@ type DiceTrayOptions struct {
 }
 
 // DiceTray holds several dice on felt, and their total.
-func DiceTray(c *ui.Context, text string, values []int, o DiceTrayOptions) *ui.Element {
+func DiceTray(c *ui.Context, text string, values []int, o DiceTrayOptions) ui.Element {
 	k := pixel.K(c)
 	if len(values) == 0 {
 		panic("tabletop: DiceTray has no dice")

tabletop/domino.go

@@ -14,7 +14,7 @@ type DominoOptions struct {
 }
 
 // Domino is a tile of two halves of 0–6 pips.
-func Domino(c *ui.Context, a, b int, o DominoOptions) *ui.Element {
+func Domino(c *ui.Context, a, b int, o DominoOptions) ui.Element {
 	k := pixel.K(c)
 	if a < 0 || a > 6 || b < 0 || b > 6 {
 		panic(fmt.Sprintf("tabletop: Domino %d|%d", a, b))

tabletop/goboard.go

@@ -23,7 +23,7 @@ type GoBoardOptions struct {
 }
 
 type GoBoardResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Placed is the point played this frame, else -1.
 	Placed int
 }

tabletop/mahjongtile.go

@@ -51,7 +51,7 @@ var (
 const tileW, tileH = 26, 34
 
 // MahjongTile is a suit or honor tile, or its back.
-func MahjongTile(c *ui.Context, t Tile, o MahjongTileOptions) *ui.Element {
+func MahjongTile(c *ui.Context, t Tile, o MahjongTileOptions) ui.Element {
 	k := pixel.K(c)
 	if t.Family < Dots || t.Family > Dragons || t.Rank < 1 || t.Rank > families[t.Family].ranks {
 		panic(fmt.Sprintf("tabletop: MahjongTile %+v", t))

tabletop/meeple.go

@@ -18,7 +18,7 @@ type MeepleOptions struct {
 }
 
 // Meeple is a player's token, standing in its slot.
-func Meeple(c *ui.Context, text string, o MeepleOptions) *ui.Element {
+func Meeple(c *ui.Context, text string, o MeepleOptions) ui.Element {
 	k := pixel.K(c)
 	if o.Player < 0 || o.Player >= len(players) {
 		panic(fmt.Sprintf("tabletop: Meeple player %d", o.Player))

tabletop/playingcard.go

@@ -12,7 +12,7 @@ type PlayingCardOptions struct {
 }
 
 // PlayingCard is a card: rank and suit, or its back.
-func PlayingCard(c *ui.Context, cd Card, o PlayingCardOptions) *ui.Element {
+func PlayingCard(c *ui.Context, cd Card, o PlayingCardOptions) ui.Element {
 	k := pixel.K(c)
 	cd.check("PlayingCard")
 	name := cd.name(k)

tabletop/roulette.go

@@ -18,7 +18,7 @@ type RouletteOptions struct {
 const wheel = 28
 
 // Roulette spins its wheel, on a new Cue, to result.
-func Roulette(c *ui.Context, text string, segments []string, result int, o RouletteOptions) *ui.Element {
+func Roulette(c *ui.Context, text string, segments []string, result int, o RouletteOptions) ui.Element {
 	k := pixel.K(c)
 	n := len(segments)
 	if n < 2 || n > 64 || result < 0 || result >= n || slices.Contains(segments, "") {

tabletop/scoretrack.go

@@ -19,7 +19,7 @@ type ScoreTrackOptions struct {
 const space = 20
 
 // ScoreTrack winds a path; player meeples mark their scores.
-func ScoreTrack(c *ui.Context, text string, scores []int, o ScoreTrackOptions) *ui.Element {
+func ScoreTrack(c *ui.Context, text string, scores []int, o ScoreTrackOptions) ui.Element {
 	k := pixel.K(c)
 	n := pixel.Or("ScoreTrack Spaces", o.Spaces, 30)
 	// A space prints three digits at most.

tabletop/tictactoe.go

@@ -13,7 +13,7 @@ type TicTacToeOptions struct {
 }
 
 type TicTacToeResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Played is the cell you took this frame, else -1.
 	Played int
 	// Over is the game ending this frame; Restarted, the CONTINUE.