Initialize Phase 0 monorepo skeleton (T-001)

app-modern/cmd/softbox/main.go

@@ -0,0 +1,11 @@
+package main
+
+import (
+	"fmt"
+
+	"softbox.local/core"
+)
+
+func main() {
+	fmt.Println(core.ProductName)
+}

app-modern/go.mod

@@ -0,0 +1,8 @@
+module softbox.local/app-modern
+
+go 1.25.0
+
+require (
+	gioui.org v0.10.1
+	softbox.local/core v0.0.0
+)

app-modern/platform/windows/doc.go

@@ -0,0 +1,2 @@
+// Package windows contains modern Windows platform adapters.
+package windows

app-modern/ui/gio/doc.go

@@ -0,0 +1,2 @@
+// Package gio contains the modern Gio UI adapter.
+package gio