Update modules/processing/prompt_builder.py

Update modules/processing/prompt_builder.py

Update modules/processing/prompt_builder.py

Update modules/processing/prompt_builder.py

Update modules/clients/search_client.py

edit: update datetime codes

Update: Query-based logic is now disabled.

refactor: move LLM model initialization from global scope to function-level for lazy loading

refactor: move LLM model initialization from global scope to function-level for lazy loading

First codes update