* Update headers.js
Fixes X-Upstream-Hostname header for os hostnames with invalid characters
* Added missing period in allowed hostname chars
Allowed hostname chars should include A-Za-z0-9-. based on https://man7.org/linux/man-pages/man7/hostname.7.html
* feat: add chat:privileged global privilege
to only allow chatting with privileged users
* test: fix priv test
* test: one more fix
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Co-authored-by: chadjw <chad.warner@gmail.com>