Two recent code changes lacked or had only partial doc coverage:
- contextInjection 'never' (#65006, xDarkicex): the new mode is now
documented under agents.defaults.contextInjection, alongside the
existing 'continuation-skip' mode, with guidance on when to use it
(custom context engines, native runtimes that own their prompt).
- Nix Home Manager daemon PATH (#44402, jerome.benoit): document the
service PATH auto-discovery (NIX_PROFILES right-to-left precedence
and ~/.nix-profile/bin fallback) under the Nix install page.
Also sentence-case three Title-Cased headings on the Nix page ('What
You Get', 'Quick Start', 'Nix Mode Runtime Behavior') and drop a
duplicate body H1 that restated the frontmatter title.
b59ba1dc8e
