Function config_render_context 

pub fn config_render_context<V: Serialize>(yui: &YuiVars, vars: &V) -> Context

template_context plus self-referencing placeholders for the hook script vars (script_path / script_dir / script_name / script_stem / script_ext). Use this only for the config-load Tera pass, where those tokens haven’t been bound yet but should survive verbatim so the hook executor can resolve them at run time.

Why a separate builder rather than seeding the placeholders in template_context itself: dotfile (*.tera) rendering uses template_context too, and a typo’d {{ script_path }} in a dotfile should surface as “Variable not found in context” rather than silently rendering to the literal {{ script_path }}. Keeping the placeholders carve-out config-only preserves that loud failure for dotfiles.