Fix empty branches_to_generate

[mrhallak]

Fix AttributeError when branches_to_generate is None

Problem

The generate_tasks command was failing with AttributeError: 'NoneType' object has no attribute 'items' when the module config file had branches_to_generate: null or the key was missing.

Root Cause

In Module.__init__, self._branches_to_generate was assigned directly using config["branches_to_generate"], which could be None. Later, generate_task_configs() attempted to call .items() on this None value.

Solution

Changed the assignment to use config.get("branches_to_generate") or {} to ensure _branches_to_generate always defaults to an empty dictionary when the value is None or missing.

Before:
self._branches_to_generate = config["branches_to_generate"]After:
self._branches_to_generate = config.get("branches_to_generate") or {}## Additional Changes

• Code formatting improvements for better readability (line breaks, consistent quote style)

Testing

This fix is backward compatible and allows the module system to gracefully handle configs without defined branches.