Should a Serverless Cloud Function Be Implemented Inside UI Layer (DDD)?

I'm currently implementing a trading bot using Python and I have the following design:

DAL:

• StocksRepository

Domain:

• RecommendationService
• StocksDataCollectionService

UI:

• bot.py: a function that buys recommended stock every day at specific time
• simulator.py # simulating trading stocks on historical data

My questions are:

- Should I place the bot and the simulator in the same layer?
- Should I call this layer UI layer, or should I call it Application?
- What are the flaws of my design and things that could be named better?

** the bot and the simulator could even be separate projects, however they still use the same business logic
and share a lot of commonalities so I'm wondering what is the best way to design a system that allows
multiple projects to use it.

For the sake of simplicity, the design above does not contain every component.
The full design is:

DAl:

• SqlStocksRepository
• SqlSymbolsRepository

Domain:

• services:
  • StocksDataCollectionService:
    • external_market_api_1
    • external_market_api_2
  • RecommendationService:
    • trading_strategy_1
    • trading_strategy_2
• entities:
  • Stock
  • Symbols
• interfaces:
  • IStocksRepository
  • ISymbolsRepository

UI:

• trading_bot:
  • main.py
• trading_simulator:
  • main.py
  • simulator.py # Feels like if it's in the domain layer it's an ISP violation, correct me if I'm wrong