Dameng Database Connection Auto-selection and Transaction Control Failure

[honkerjha]

Describe the bug
There are two functional bugs in the Dameng Database VS Code extension related to default connection auto-selection and manual transaction control, which affect daily database development and operation efficiency.
To Reproduce

1. Default database connection cannot be automatically selected
   I have already set the default workspace connection via the shortcut CTRL+SHIFT+P. However, every time I create a new text file and manually switch the file language mode to DBCODE, the extension fails to automatically load the default connection. I have to manually select the database connection again for each new file.

2. Manual transaction commit/rollback and auto-commit toggle malfunction
   After turning off the auto-commit transaction option in the plugin settings:

• After executing UPDATE statements, I cannot manually commit or rollback transactions via the status bar buttons at the bottom right of VS Code.
• The auto-commit switch cannot be toggled through the bottom-right status bar either. The only way to enable or disable auto-commit is to access the full plugin configuration page manually.
  Expected behavior
• After configuring the workspace default connection, the extension should automatically apply the default connection when new DBCODE files are created, without repeated manual selection.
• The bottom-right status bar should provide available entry for transaction commit and rollback operations, and support quick switching of the auto-commit status, instead of relying solely on the configuration page.
  Environment

• VS Code Version: 1.131.0
• Dameng Database Extension Version: 1.38.6
• OS: Windows 10