fix(bindings): strip debug info on Windows to avoid Go 1.25 DWARF5 PE bug

Go 1.25 switched to DWARF5 debug format by default. On Windows, the
internal linker emits malformed PE section headers when DWARF5 sections
are present, producing a binary that Windows refuses to execute:

  fork/exec wailsbindings.exe: %1 is not a valid Win32 application.
  fork/exec wailsbindings.exe: This version of %1 is not compatible
    with the version of Windows you're running.

Pass -ldflags="-s -w" when building wailsbindings.exe on Windows.
Stripping debug info removes DWARF5 sections entirely, producing clean
PE headers. This is appropriate for a temporary tool binary that is
deleted immediately after use and never debugged.

The fix works regardless of whether the user's project uses CGO.

Upstream: golang/go#75077, golang/go#75121
Fixes #4605
Fixes #4551

Author: leaanthony

v2/pkg/commands/bindings/bindings.go

@@ -62,11 +62,13 @@ func GenerateBindings(options Options) (string, error) {
 
 	buildArgs := []string{"build", "-buildvcs=false", "-tags", tagString, "-o", filename}
 	if runtime.GOOS == "windows" {
-		// Go 1.25 changed external-linker behaviour on Windows, producing PE
-		// binaries that Windows refuses to run ("not a valid Win32 application").
-		// Force the internal linker to avoid this; it still supports CGO.
-		// See https://github.com/wailsapp/wails/issues/4551 and #4605.
-		buildArgs = append(buildArgs, "-ldflags=-linkmode=internal")
+		// Go 1.25 switched to DWARF5 by default, which causes the internal
+		// linker to emit malformed PE section headers on Windows — the binary
+		// won't run ("not a valid Win32 application" / "not compatible with
+		// the version of Windows"). Stripping debug info avoids DWARF5
+		// entirely and is appropriate for a temporary tool binary.
+		// See golang/go#75077, golang/go#75121, wails#4551, wails#4605.
+		buildArgs = append(buildArgs, "-ldflags=-s -w")
 	}
 	stdout, stderr, err = shell.RunCommandWithEnv(envBuild, workingDirectory, options.Compiler, buildArgs...)
 	if err != nil {