Hot Sesame Noodles with Scallions and Pork

Name: Hot Sesame Noodles with Scallions and Pork
Ingredients: 1 (3) piece ginger, peeled, finely grated; 2 garlic cloves, finely grated; 1/2 cup tahini; 1/4 cup low-sodium soy sauce or tamari; 1/4 cup mirin (Japanese rice wine); 1/4 cup unseasoned rice vinegar; 1/4 cup hot chili sesame oil, plus more for serving; 2 Tbsp. vegetable oil; 1 lb. ground pork, beef, chicken, or turkey; 1 tsp. kosher salt, divided, plus more; 2 cups sliced carrots, zucchini, or whole snow or sugar snap peas; 1 bunch scallions, white and pale green parts cut into 1 pieces, dark green parts thinly sliced; 8 oz. rice noodles of any shape; Toasted sesame seeds and sliced seaweed snacks (for serving; optional)