some more re-org + fixes

sql/Initial_triggers_and_functions.sql

@@ -879,6 +879,27 @@ BEGIN
 END;
 $$;
 
+/**
+ * Creates a personal, editable copy (a "fork") of a public recipe for a user.
+ * @param p_user_id The ID of the user forking the recipe.
+ * Creates a personal, editable copy (a "fork") of a public recipe for a user.
+ * @param userId The ID of the user forking the recipe.
+ * @param originalRecipeId The ID of the recipe to fork.
+ * @returns A promise that resolves to the newly created forked Recipe object.
+ */
+-- Function to create a personal, editable copy (a "fork") of a public recipe for a user.
+DROP FUNCTION IF EXISTS public.fork_recipe(UUID, BIGINT);
+
+CREATE OR REPLACE FUNCTION public.fork_recipe(p_user_id UUID, p_original_recipe_id BIGINT)
+RETURNS SETOF public.recipes
+LANGUAGE sql
+SECURITY INVOKER
+AS $$
+    -- The entire forking logic is now encapsulated in a single, atomic database function.
+    SELECT * FROM public.fork_recipe(p_user_id, p_original_recipe_id);
+$$;
+
+
 -- Function to find recipes that can be made entirely from items in a user's pantry.
 DROP FUNCTION IF EXISTS public.find_recipes_from_pantry(UUID);