# TODO

## Response headers don't work with host ACL conditions

`http-response set-header ... if host_X` doesn't work because `hdr(host)` is a request-phase fetch that HAProxy can't evaluate in the response phase. The headers are generated but silently ignored (HAProxy logs a WARNING).

Fix: capture the host in a transaction variable during the request phase, then use it in response rules:
```haproxy
http-request set-var(txn.host) hdr(host)
acl is_keila var(txn.host) -i keila.cloud.payne.io
http-response set-header Access-Control-Allow-Origin "https://cloud.payne.io" if is_keila
```

Affects: keila (CORS headers), plausible (Private-Network-Access header).

## Input validation for header values

Header values with special characters (newlines, NULs) should be rejected at registration time. Currently values are Go-`%q`-quoted in the HAProxy output which handles spaces/commas but may produce backslash escapes that HAProxy doesn't understand for edge cases.

## APT package: Authelia bare-metal installation

When building the wild-central apt package in `dist/`, include Authelia as a dependency or document its installation. Bare-metal installation instructions: https://www.authelia.com/integration/deployment/bare-metal/