chore(v2): vendor dependencies for offline/China builds

go mod vendor pins onnxruntime_go v1.12.1, Gio and the rest into v2/vendor
so go run/build work without hitting proxy.golang.org (blocked/slow in
China). Verified: CGO_ENABLED=1 go build -mod=vendor ./internal/spike and
GOOS=windows go build -mod=vendor ./internal/ui both pass.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

v2/vendor/gioui.org/widget/material/label.go

@@ -0,0 +1,154 @@
+// SPDX-License-Identifier: Unlicense OR MIT
+
+package material
+
+import (
+	"image/color"
+
+	"gioui.org/font"
+	"gioui.org/internal/f32color"
+	"gioui.org/layout"
+	"gioui.org/op"
+	"gioui.org/op/paint"
+	"gioui.org/text"
+	"gioui.org/unit"
+	"gioui.org/widget"
+)
+
+// LabelStyle configures the presentation of text. If the State field is set, the
+// label will be laid out as interactive (able to be selected and copied). Otherwise,
+// the label will be non-interactive.
+type LabelStyle struct {
+	// Face defines the text style.
+	Font font.Font
+	// Color is the text color.
+	Color color.NRGBA
+	// SelectionColor is the color of the background for selected text.
+	SelectionColor color.NRGBA
+	// Alignment specify the text alignment.
+	Alignment text.Alignment
+	// MaxLines limits the number of lines. Zero means no limit.
+	MaxLines int
+	// WrapPolicy configures how displayed text will be broken into lines.
+	WrapPolicy text.WrapPolicy
+	// Truncator is the text that will be shown at the end of the final
+	// line if MaxLines is exceeded. Defaults to "…" if empty.
+	Truncator string
+	// Text is the content displayed by the label.
+	Text string
+	// TextSize determines the size of the text glyphs.
+	TextSize unit.Sp
+	// LineHeight controls the distance between the baselines of lines of text.
+	// If zero, a sensible default will be used.
+	LineHeight unit.Sp
+	// LineHeightScale applies a scaling factor to the LineHeight. If zero, a
+	// sensible default will be used.
+	LineHeightScale float32
+
+	// Shaper is the text shaper used to display this labe. This field is automatically
+	// set using by all constructor functions. If constructing a LabelStyle literal, you
+	// must provide a Shaper or displaying text will panic.
+	Shaper *text.Shaper
+	// State provides text selection state for the label. If not set, the label cannot
+	// be selected or copied interactively.
+	State *widget.Selectable
+}
+
+func H1(th *Theme, txt string) LabelStyle {
+	label := Label(th, th.TextSize*96.0/16.0, txt)
+	label.Font.Weight = font.Light
+	return label
+}
+
+func H2(th *Theme, txt string) LabelStyle {
+	label := Label(th, th.TextSize*60.0/16.0, txt)
+	label.Font.Weight = font.Light
+	return label
+}
+
+func H3(th *Theme, txt string) LabelStyle {
+	return Label(th, th.TextSize*48.0/16.0, txt)
+}
+
+func H4(th *Theme, txt string) LabelStyle {
+	return Label(th, th.TextSize*34.0/16.0, txt)
+}
+
+func H5(th *Theme, txt string) LabelStyle {
+	return Label(th, th.TextSize*24.0/16.0, txt)
+}
+
+func H6(th *Theme, txt string) LabelStyle {
+	label := Label(th, th.TextSize*20.0/16.0, txt)
+	label.Font.Weight = font.Medium
+	return label
+}
+
+func Subtitle1(th *Theme, txt string) LabelStyle {
+	return Label(th, th.TextSize*16.0/16.0, txt)
+}
+
+func Subtitle2(th *Theme, txt string) LabelStyle {
+	label := Label(th, th.TextSize*14.0/16.0, txt)
+	label.Font.Weight = font.Medium
+	return label
+}
+
+func Body1(th *Theme, txt string) LabelStyle {
+	return Label(th, th.TextSize, txt)
+}
+
+func Body2(th *Theme, txt string) LabelStyle {
+	return Label(th, th.TextSize*14.0/16.0, txt)
+}
+
+func Caption(th *Theme, txt string) LabelStyle {
+	return Label(th, th.TextSize*12.0/16.0, txt)
+}
+
+func Overline(th *Theme, txt string) LabelStyle {
+	return Label(th, th.TextSize*10.0/16.0, txt)
+}
+
+func Label(th *Theme, size unit.Sp, txt string) LabelStyle {
+	l := LabelStyle{
+		Text:           txt,
+		Color:          th.Palette.Fg,
+		SelectionColor: f32color.MulAlpha(th.Palette.ContrastBg, 0x60),
+		TextSize:       size,
+		Shaper:         th.Shaper,
+	}
+	l.Font.Typeface = th.Face
+	return l
+}
+
+func (l LabelStyle) Layout(gtx layout.Context) layout.Dimensions {
+	textColorMacro := op.Record(gtx.Ops)
+	paint.ColorOp{Color: l.Color}.Add(gtx.Ops)
+	textColor := textColorMacro.Stop()
+	selectColorMacro := op.Record(gtx.Ops)
+	paint.ColorOp{Color: l.SelectionColor}.Add(gtx.Ops)
+	selectColor := selectColorMacro.Stop()
+
+	if l.State != nil {
+		if l.State.Text() != l.Text {
+			l.State.SetText(l.Text)
+		}
+		l.State.Alignment = l.Alignment
+		l.State.MaxLines = l.MaxLines
+		l.State.Truncator = l.Truncator
+		l.State.WrapPolicy = l.WrapPolicy
+		l.State.LineHeight = l.LineHeight
+		l.State.LineHeightScale = l.LineHeightScale
+		return l.State.Layout(gtx, l.Shaper, l.Font, l.TextSize, textColor, selectColor)
+	}
+	tl := widget.Label{
+		Alignment:       l.Alignment,
+		MaxLines:        l.MaxLines,
+		Truncator:       l.Truncator,
+		WrapPolicy:      l.WrapPolicy,
+		LineHeight:      l.LineHeight,
+		LineHeightScale: l.LineHeightScale,
+	}
+	return tl.Layout(gtx, l.Shaper, l.Font, l.TextSize, l.Text, textColor)
+}