fix herdr launch safety and task context

internal/orchestrator/launch_prompt_test.go

@@ -0,0 +1,20 @@
+package orchestrator
+
+import (
+	"orchestra/internal/domain"
+	"strings"
+	"testing"
+)
+
+func TestTaskLaunchPromptIncludesRemoteTaskInstructions(t *testing.T) {
+	prompt := taskLaunchPrompt(domain.Task{
+		ID:          "task-1",
+		Title:       "Create marker",
+		Description: "Create E2E_RESULT.md containing ok.",
+	})
+	for _, want := range []string{"task-1", "Create marker", "Create E2E_RESULT.md containing ok."} {
+		if !strings.Contains(prompt, want) {
+			t.Fatalf("launch prompt missing %q: %s", want, prompt)
+		}
+	}
+}