Add capture browser and step-at-a-time browse tool

tools/capturebrowser/main.go

@@ -0,0 +1,25 @@
+// Command capturebrowser launches the headed capture browser used to screenshot authenticated sites.
+package main
+
+import (
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+)
+
+func main() {
+	profile := filepath.Join(os.Getenv("HOME"), ".heliosian", "capture-profile")
+	if err := os.MkdirAll(profile, 0o700); err != nil {
+		log.Fatalf("[ERROR] create profile dir: %v", err)
+	}
+	cmd := exec.Command("open", "-na", "Google Chrome", "--args",
+		"--user-data-dir="+profile,
+		"--remote-debugging-port=9222",
+		"--no-first-run",
+		"--no-default-browser-check")
+	if err := cmd.Run(); err != nil {
+		log.Fatalf("[ERROR] launch chrome: %v", err)
+	}
+	log.Printf("capture browser running, devtools on http://localhost:9222, profile in %s", profile)
+}