feat: add @toon-format/toon dependency and integrate into OpenAI notebooks

- Updated deno.lock and package.json to include @toon-format/toon@^2.1.0.
- Modified background-openai.ipynb to handle error responses and adjust execution counts.
- Enhanced definitions-openai.ipynb to include additional metadata for perishables and origen schemas.
- Refactored embeddings-openai.ipynb to improve error handling and output formatting.
- Updated create-chat-conversation function to append messages and responses to conversations.
- Added SQL functions for appending conversation data to the database.

supabase/migrations/20260224211719_agregar_conversaciones.sql

@@ -0,0 +1,21 @@
+CREATE OR REPLACE FUNCTION public.append_conversacion_asignatura(p_id uuid, p_append jsonb)
+ RETURNS void
+ LANGUAGE sql
+AS $function$
+  update conversaciones_asignatura
+  set conversacion_json = coalesce(conversacion_json, '[]'::jsonb) || p_append
+  where id = p_id;
+$function$
+;
+
+CREATE OR REPLACE FUNCTION public.append_conversacion_plan(p_id uuid, p_append jsonb)
+ RETURNS void
+ LANGUAGE sql
+AS $function$
+  update conversaciones_plan
+  set conversacion_json = coalesce(conversacion_json, '[]'::jsonb) || p_append
+  where id = p_id;
+$function$
+;
+
+