BAR tools logging

[remi-td]

The bar tools (src/teradata_mcp_server/tools/bar/bar_tools.py) define their own log directory.
log_dir = os.path.join(os.path.dirname(__file__), '../../../logs')

This points to the package runtime and causes the Docker (and likely CLI) deployment to fail as this path would be read only (binary).

Eg Docker:

xxx:~/mcp/teradata-mcp-server$ docker-compose up
[...]
teradata-mcp-server-1  |     os.makedirs(log_dir, exist_ok=True)
teradata-mcp-server-1  |     ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
teradata-mcp-server-1  |   File "<frozen os>", line 228, in makedirs
teradata-mcp-server-1  | PermissionError: [Errno 13] Permission denied: '/usr/local/lib/python3.13/site-packages/teradata_mcp_server/tools/bar/../../../logs'
teradata-mcp-server-1 exited with code 1
xxx:~/mcp/teradata-mcp-server$

Use the standard logging and log directory mechanism.

[remi-td]

additionally the BAR tools need to be made optional and only installed if explicitly requested (eg. when using the --extra bar uv option. This needs to be changed in:

• Docker file
• pyproject.toml (dependencies)
• app.py