feat(captcha): best-effort rotation/funcaptcha solver

internal/captcha/rotation_test.go

@@ -0,0 +1,19 @@
+package captcha
+
+import (
+	"context"
+	"testing"
+
+	"github.com/lukaszraczylo/captcha-solver-mcp/internal/llm"
+)
+
+func TestSolveRotation(t *testing.T) {
+	f := &llm.Fake{VisionResp: `{"choice":3,"rotations":2,"confidence":0.6}`}
+	res, err := SolveRotation(context.Background(), f, []byte{1}, "image/png", "rotate the animal upright")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if res.Choice != 3 || res.Rotations != 2 {
+		t.Fatalf("got %+v", res)
+	}
+}