Filipino Shrimp Noodles

Name: Filipino Shrimp Noodles
Cuisine: Asian
Ingredients: 400g thick rice noodles (preferably Pancit Malabon noodles); 250g small shrimp, peeled and deveined; 150g squid, cleaned and sliced into rings; 2 hardboiled eggs, sliced; 1 cup pork chicharrón (crispy pork cracklings), crushed; 1/2 cup smoked fish flakes (tinapa); 1/4 cup scallions, finely chopped; 1/4 cup fresh parsley, chopped; 1/2 cup cabbage, finely shredded (optional); Calamansi (or lime wedges) for garnish; 2 tbsp annatto seeds (atsuete), soaked in 1/4 cup warm water; 3 tbsp cooking oil; 3 garlic cloves, minced; 1 medium onion, finely chopped; 1/2 cup shrimp stock (reserved from boiling shrimp shells); 2 tbsp fish sauce; 1 tsp ground black pepper; 2 tbsp corn starch mixed with 2 tbsp water