[DCV-3454] Restore custom functionality of old v0.x

[jesusmgg]

Overview

Restores custom functionality from v0.x that was lost during the v1.x refactor.

Related: https://github.com/datacoves/datacoves-power-user/pull/62

Changes

SQLFluff Templater Fix

• Override _apply_dbt_builtins to return False, preventing SQLFluff from wrapping dbt builtins in FunctionWrapper objects (which lack .get() method)
• This restores the behavior from v0.2.x using a different approach

Snapshot Support

• Strip {% snapshot %} / {% endsnapshot %} tags in _create_temp_node before compilation
• Supersedes Fix removal of Jinja tags #16

Query Execution

• Wrap compiled code in subquery to safely apply user LIMIT clause
• Don't apply default limit if an in-script LIMIT clause is already present

Logging Fix

• Removed hardcoded DEBUG log level
• Now uses LOG_LEVEL env variable with INFO as default

⚠️ Deployment Note

The production entrypoint in datacoves/src/code-server/dbt-core-interface/src/bin/entrypoint.sh needs to be updated:

- python -m dbt_core_interface.project --host 0.0.0.0 --port 8581
+ python -m dbt_core_interface.server --host 0.0.0.0 --port 8581