chore(wails): scaffold v3 project boilerplate

Wails v3 replaces the NPM-only dev entry point. This adds the Go module,
Taskfile, build metadata, and a minimal window shell without touching
frontend logic.

Co-authored-by: Cursor <cursoragent@cursor.com>

build/windows/info.json

@@ -0,0 +1,15 @@
+{
+	"fixed": {
+		"file_version": "0.1.0"
+	},
+	"info": {
+		"0000": {
+			"ProductVersion": "0.1.0",
+			"CompanyName": "My Company",
+			"FileDescription": "A sfxkeeb application",
+			"LegalCopyright": "© 2026, My Company",
+			"ProductName": "My Product",
+			"Comments": "This is a comment"
+		}
+	}
+}