A regular expression pattern for branches that should always be included in the list, regardless of the commit date or the "Max Branch Count" limit.

These branches will still be subject to the "Branch Filter" if configured, or you can choose to make them bypass it based on implementation preferences (Current design: They bypass the Top N limit, but must still be valid branches).

Useful for keeping main branches like master, main, or develop always visible.

Example: ^(main|master|develop)$