Cook the quinoa: Rinse 1/2 cup dry quinoa under cold water. Simmer with 1 cup water and a pinch of salt for about 15 minutes.
Fluff and cool. You want 1 cup cooked.
Prep the edamame: If frozen, pour boiling water over it and let sit 2–3 minutes, then drain and cool. Pat dry.
Chop the vegetables: Halve the cherry tomatoes, dice the cucumber and avocado, shred the cabbage, and finely chop the red onion and herbs.
Make the dressing: Whisk tahini, olive oil, lemon zest and juice, maple syrup, Dijon, garlic, salt, and pepper.
Add cold water a little at a time until creamy and pourable.
Assemble the salad: In a large bowl, combine quinoa, chickpeas, edamame, tomatoes, cucumber, cabbage, red onion, and herbs. Sprinkle in hemp seeds and pumpkin seeds.
Dress and toss: Add about two-thirds of the dressing and toss gently. Fold in the avocado last so it stays intact.
Add more dressing if needed.
Taste and adjust: Add a pinch more salt, pepper, or lemon if you want extra brightness. Serve immediately or chill for 15 minutes to let flavors mingle.