In a small bowl, whisk together avocado oil, rice vinegar, sesame oil, tamari, ginger, and garlic to make the dressing.
Slice cucumbers thinly and add them to a large mixing bowl.
Add thawed edamame, cubed avocado, and sliced green onions.
Pour the sesame-ginger dressing over the salad ingredients.
Gently toss everything together until evenly coated.
Sprinkle with toasted sesame seeds and Aleppo pepper flakes.
Add fresh basil if using, and toss lightly again.
Serve immediately or chill for 15–20 minutes for deeper flavor.