UI: animasi dan branding tambahan

- Garis aksen gradien berdenyut terus (indigo <-> cyan)
- Kartu shortcut: transisi warna halus saat disorot mouse (hoverCard)
- Kartu baru berkedip warna brand saat daftar dimuat / setelah install
- Logo LazyRun + brand mark di dialog, footer 'LazyRun vX · oxpoe'
- Thumbnail shortcut bersudut membulat
- Versi logo fade-in dibuang: canvas.Image.Translucency tidak ter-render di Fyne 2.8

internal/ui/animation.go

@@ -0,0 +1,87 @@
+package ui
+
+import (
+	"image/color"
+	"time"
+
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/canvas"
+	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/driver/desktop"
+	"fyne.io/fyne/v2/theme"
+	"fyne.io/fyne/v2/widget"
+)
+
+// Animasi di sini sengaja pendek dan tidak menyentuh posisi/ukuran objek,
+// supaya tidak bertabrakan dengan layout container.
+
+// pulseGradient membuat garis aksen bergerak bolak-balik antara indigo dan cyan.
+func pulseGradient(bar *canvas.LinearGradient) {
+	anim := canvas.NewColorRGBAAnimation(brandIndigo, brandCyan, 3*time.Second, func(c color.Color) {
+		bar.EndColor = c
+		canvas.Refresh(bar)
+	})
+	anim.AutoReverse = true
+	anim.RepeatCount = fyne.AnimationRepeatForever
+	anim.Start()
+}
+
+// hoverCard adalah kartu yang warnanya berubah halus saat disorot mouse,
+// dan bisa dipakai untuk animasi kedatangan baris baru.
+type hoverCard struct {
+	widget.BaseWidget
+	bg      *canvas.Rectangle
+	content fyne.CanvasObject
+	hover   bool
+}
+
+func newHoverCard(content fyne.CanvasObject) *hoverCard {
+	c := &hoverCard{
+		bg:      canvas.NewRectangle(theme.Color(colorNameCard)),
+		content: content,
+	}
+	c.bg.CornerRadius = 12
+	c.ExtendBaseWidget(c)
+	return c
+}
+
+func (c *hoverCard) CreateRenderer() fyne.WidgetRenderer {
+	return widget.NewSimpleRenderer(container.NewStack(c.bg, container.NewPadded(c.content)))
+}
+
+func (c *hoverCard) MouseIn(*desktop.MouseEvent)    { c.setHover(true) }
+func (c *hoverCard) MouseMoved(*desktop.MouseEvent) {}
+func (c *hoverCard) MouseOut()                      { c.setHover(false) }
+
+func (c *hoverCard) setHover(on bool) {
+	if c.hover == on {
+		return
+	}
+	c.hover = on
+	c.animate(theme.Color(pick(on, colorNameCardHover, colorNameCard)), 150*time.Millisecond)
+}
+
+// flash membuat kartu berkedip warna brand sebentar (baris baru muncul).
+func (c *hoverCard) flash(delay time.Duration) {
+	start := func() { c.animate(theme.Color(colorNameCard), 450*time.Millisecond) }
+	if delay <= 0 {
+		c.bg.FillColor = theme.Color(colorNameChipMenu)
+		start()
+		return
+	}
+	time.AfterFunc(delay, func() {
+		fyne.Do(func() {
+			c.bg.FillColor = theme.Color(colorNameChipMenu)
+			start()
+		})
+	})
+}
+
+// animate memindahkan warna latar kartu secara halus dari warna sekarang.
+func (c *hoverCard) animate(goal color.Color, d time.Duration) {
+	from := c.bg.FillColor
+	canvas.NewColorRGBAAnimation(from, goal, d, func(col color.Color) {
+		c.bg.FillColor = col
+		canvas.Refresh(c.bg)
+	}).Start()
+}