Andouille Crab and Oyster Gumbo

Name: Andouille, Crab, and Oyster Gumbo
Ingredients: ½ c. all-purpose flour; ½ c. vegetable oil; 1 lb. andouille sausage; 3 large celery ribs; 1 onion; 1 red bell pepper; 1 habanero chile; 3 clove garlic; ½ lb. okra; 2 tsp. dried thyme; 1 bay leaf; 3 tbsp. filé powder; 5 c. chicken stock or low-sodium broth; 3 c. bottled clam juice; 3 tbsp. Worcestershire sauce; 3 large tomatoes; 1 lb. lump crabmeat; 24 shucked oysters and their liquor; salt; Freshly ground pepper; Steamed rice or crusty bread