pub const AUTH_KEY_HEADER: &str = "X-AuthKey";Expand description
The HTTP header that carries srv’s instance auth key, on every route and
on the /ws upgrade. srv checks it in crates/srv/src/server/auth.rs;
every Rust client (mcp, cef, bashwrap, launcher, srv’s own forwards)
sends it under this name. The frontend’s twin is AUTH_KEY_HEADER in
frontend/util/sharedconst.ts. HTTP header names are case-insensitive,
so this is the spelling we send, not the only one srv accepts.