Support global template_searchpath config for Breeze

[Brunda10]

Enables setting a default template_searchpath via cli in Breeze. Simplifies access to shared SQL templates without repeating the path in every DAG.

Closes: #53972

[potiuk]

As discussed in #53792 - we have already far too many parameters - and this particular one is likely better to be configured via customization options if you want to set it https://github.com/apache/airflow/blob/main/dev/breeze/doc/02_customizing.rst#customizing-breeze-startup

Instead I would propose to look where this behaviour is coming from and turn it into a documented Airflow feature - including user documentation etc.

[Brunda10]

Thanks for the feedback!

As suggested, I investigated the root of the template_searchpath behavior and located how it’s derived in the DAG rendering flow.

• A new template_searchpath config option in config_templates/config.yml
• Fallback logic in the DAG template rendering for consistent behavior
• Clear defaults without overloading Breeze CLI parameters

The updated implementation is available here: New PR → #54256

[github-actions]

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