- adjust layout spacing on public auth-related templates
- ensure captcha challenge areas remain visible on small screens
- align image driver output with refreshed markup
Signed-off-by: Qi HU <github@spcsky.com>
Introduce a configurable captcha manager with drivers for image,
Cloudflare Turnstile, and Google reCAPTCHA, including fallback
behaviour.
Refactor login, signup, complain, and related flows to use the new
abstraction while simplifying the legacy image endpoint.
Document captcha environment options and restore classic defaults in
.env.example.
Signed-off-by: Qi HU <github@spcsky.com>
