In a small nonstick skillet cook garlic, ginger, cumin seeds, and red pepper flakes in oil over moderately low heat, stirring, about 2-3 minutes. Place the garlic mixture, water, cilantro and parsley in a blender and purée with 1/4 cup water until smooth. Stir in lemon juice. Season with salt and pepper.
Make the Spring Rolls:
Prep the vegetables, tofu, and noodles.
To assemble spring rolls, pour very hot water into a shallow dish and place 1 rice paper to soften for about 10-15 seconds.
Move to a cutting board and spread out into a circle. It's OK if it rips a little but if it rips too much, get a new one and start again.
Layer the avocado, tofu, noodles, a few cilantro leaves and mango on the bottom third of the paper. Gently fold over once, tuck in edges, and continue rolling until seam is sealed. (like a burrito!)
Place seam-side down on a serving platter and cover with damp warm towel to keep fresh. Repeat until finished, you should have about 8-10 spring rolls total.
Serve with spicy cilantro dipping sauce.
Leftovers store well individually wrapped in plastic wrap, though taste best when fresh.