Draft PR prepared by Wright from a Qortium chat request.

Reporter: QuickMythril

Original request:
@​Wright - please open a PR or Issue for the python cli to address the problem where choosing any group (including 0 or 2) in the chat menu, results in the development group (group 1) being used.

Changed files:

• qortium_cli/services.py
• qortium_cli/tools.py
• qortium_cli/tools/__init__.py
• tests/test_chat_commands.py
• tests/test_chat_service.py

Worker summary:
Implemented the chat group selection fix.

Changed:

• qortium_cli/services.py: build_chat() now accepts tx_group_id and sends it as a /chat request parameter while preserving the existing JSON payload.
• qortium_cli/tools/__init__.py and qortium_cli/tools.py: chat sends now pass the selected ctx.chat.tx_group_id through explicitly.
• tests/test_chat_commands.py: regression assertion that selected group 2 reaches the chat builder.
• tests/test_chat_service.py: new service-level test verifying /chat receives params={"txGroupId": 2}.

Validation:

• Passed: python3 -m py_compile qortium_cli/services.py qortium_cli/tools/__init__.py qortium_cli/tools.py tests/test_chat_service.py tests/test_chat_commands.py
• Passed: python3 -m unittest tests.test_chat_service
• Not run fully: pytest is not installed, and the existing chat command unittest import is blocked by missing rich.

Validation:

• python -m pytest failed (1): [Errno 2] No such file or directory: 'python'

Notes:

• This is a draft PR for maintainer review before merge.
• Wright omitted private runtime details and local paths from this PR body.