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>

project/assigneepicker.go

@@ -16,7 +16,7 @@ type AssigneePickerOptions struct {
 }
 
 type AssigneePickerResult struct {
-	Element *ui.Element
+	Element ui.Element
 	Changed bool
 }
 
@@ -38,7 +38,7 @@ func AssigneePicker(c *ui.Context, text string, party []string, chosen *int, o A
 			}
 			// The shell draws the seat; the radio stays bare.
 			sel := *chosen
-			shell, base, st := pixel.Shell(c, func() *ui.Element {
+			shell, base, st := pixel.Shell(c, func() ui.Element {
 				return ui.RadioBase(c, &sel, i).Label(name).Disabled(o.Disabled)
 			})
 			// The radio picks before it is told it is off.

project/burndown.go

@@ -17,7 +17,7 @@ type BurndownOptions struct {
 }
 
 // Burndown draws the ideal line and the work left.
-func Burndown(c *ui.Context, text string, total float64, days int, left []float64, o BurndownOptions) *ui.Element {
+func Burndown(c *ui.Context, text string, total float64, days int, left []float64, o BurndownOptions) ui.Element {
 	k := pixel.K(c)
 	if !(total > 0) || math.IsInf(total, 0) || days < 1 || len(left) > days+1 {
 		panic(fmt.Sprintf("project: Burndown of %v over %d days, %d points", total, days, len(left)))

project/checklist.go

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

project/issuecard.go

@@ -26,7 +26,7 @@ type IssueCardOptions struct {
 }
 
 type IssueCardResult struct {
-	Element *ui.Element
+	Element ui.Element
 	Clicked bool
 }
 
@@ -51,7 +51,7 @@ func IssueCard(c *ui.Context, is Issue, o IssueCardOptions) IssueCardResult {
 	w := pixel.Or("IssueCard Width", o.Width, 160)
 	lines := pixel.Wrap(is.Title, w-8, 2)
 	// The shell draws the card; the button stays bare.
-	shell, base, st := pixel.Shell(c, func() *ui.Element {
+	shell, base, st := pixel.Shell(c, func() ui.Element {
 		return ui.ButtonBase(c).Label(is.ID + " " + is.Title).Disabled(o.Disabled)
 	})
 	base.Description(strings.Join(said, ", "))

project/labelpicker.go

@@ -17,7 +17,7 @@ type LabelPickerOptions struct {
 }
 
 type LabelPickerResult struct {
-	Element *ui.Element
+	Element ui.Element
 	Changed bool
 }
 

project/milestones.go

@@ -64,7 +64,7 @@ var (
 )
 
 // Milestones plants flags on a path; a hero marks today.
-func Milestones(c *ui.Context, text string, ms []Milestone, o MilestonesOptions) *ui.Element {
+func Milestones(c *ui.Context, text string, ms []Milestone, o MilestonesOptions) ui.Element {
 	k := pixel.K(c)
 	if len(ms) == 0 {
 		panic("project: Milestones has none")

project/pomodoro.go

@@ -18,7 +18,7 @@ type PomodoroOptions struct {
 }
 
 type PomodoroResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Changed is START, PAUSE or RESET; Rang ends a phase.
 	Changed, Rang bool
 }

project/priority.go

@@ -56,7 +56,7 @@ var bars = [3]*pixel.Sprite{pixel.MustSprite(`
 var levelInks = [...]pixel.Slot{pixel.Good, pixel.Warn, pixel.Bad, pixel.Bad}
 
 // Priority is a level's icon; critical is on fire.
-func Priority(c *ui.Context, l Level, o PriorityOptions) *ui.Element {
+func Priority(c *ui.Context, l Level, o PriorityOptions) ui.Element {
 	k := pixel.K(c)
 	say := l.word(k)
 	s := pixel.Or("Priority Scale", o.Scale, 1)

project/project.go

@@ -53,7 +53,7 @@ func hms(d time.Duration) string {
 }
 
 // show draws s unnamed, beside an element that names it.
-func show(c *ui.Context, k pixel.Kit, s string, slot pixel.Slot, w int) *ui.Element {
+func show(c *ui.Context, k pixel.Kit, s string, slot pixel.Slot, w int) ui.Element {
 	return ui.Box(c).Size(k.D(w), k.D(pixel.LineHeight)).Draw(func(p *ui.Painter, r ui.Rect) {
 		k.Canvas(p, r).Text(0, 0, pixel.Wrap(s, w, 1)[0], slot, 1)
 	})

project/questboard.go

@@ -19,7 +19,7 @@ type QuestBoardOptions struct {
 }
 
 type QuestBoardResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Moved reports a card that changed column or place.
 	Moved bool
 }
@@ -47,7 +47,7 @@ func QuestBoard(c *ui.Context, text string, cols *[3][]string, o QuestBoardOptio
 		}
 		most = max(most, len(col))
 	}
-	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)
 	})
 	b := ui.Local(base, boardKey{}, func() board { return board{} })

project/roadmap.go

@@ -36,7 +36,7 @@ var capSlots = []pixel.Slot{pixel.Info, pixel.Good, pixel.Warn, pixel.Magic, pix
 const laneH = pixel.LineHeight + 8
 
 // Roadmap lays bars on lanes under months, from from's.
-func Roadmap(c *ui.Context, text string, from time.Time, lanes []Lane, o RoadmapOptions) *ui.Element {
+func Roadmap(c *ui.Context, text string, from time.Time, lanes []Lane, o RoadmapOptions) ui.Element {
 	k := pixel.K(c)
 	months, mw := pixel.Or("Roadmap Months", o.Months, 6), pixel.Or("Roadmap MonthWidth", o.MonthWidth, 44)
 	if len(lanes) == 0 || months > 120 {

project/sprintpanel.go

@@ -26,7 +26,7 @@ type SprintPanelOptions struct {
 const day = 24 * time.Hour
 
 // SprintPanel shows a sprint's points done and days left.
-func SprintPanel(c *ui.Context, s Sprint, o SprintPanelOptions) *ui.Element {
+func SprintPanel(c *ui.Context, s Sprint, o SprintPanelOptions) ui.Element {
 	k := pixel.K(c)
 	if s.Name == "" || !s.Start.Before(s.End) || s.Total < 1 || s.Done < 0 || s.Done > s.Total {
 		panic(fmt.Sprintf("project: SprintPanel %q from %v to %v, %d of %d", s.Name, s.Start, s.End, s.Done, s.Total))

project/taskitem.go

@@ -24,7 +24,7 @@ type TaskItemOptions struct {
 }
 
 type TaskItemResult struct {
-	Element *ui.Element
+	Element ui.Element
 	Changed bool
 }
 

project/tasklist.go

@@ -17,7 +17,7 @@ type TaskListOptions struct {
 }
 
 type TaskListResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Changed reports a task checked or a filter turned.
 	Changed bool
 }

project/timetracker.go

@@ -25,7 +25,7 @@ type TimeTrackerOptions struct {
 }
 
 type TimeTrackerResult struct {
-	Element          *ui.Element
+	Element          ui.Element
 	Started, Stopped bool
 }
 

project/workloadbar.go

@@ -26,7 +26,7 @@ type WorkloadBarOptions struct {
 }
 
 // WorkloadBar shows each member's load against capacity.
-func WorkloadBar(c *ui.Context, text string, loads []Load, o WorkloadBarOptions) *ui.Element {
+func WorkloadBar(c *ui.Context, text string, loads []Load, o WorkloadBarOptions) ui.Element {
 	k := pixel.K(c)
 	cp := o.Capacity
 	if cp == 0 {