Remove duplicate comment, captcha, filing, and website-security configuration paths.
Move front submission verification to the captcha scene matrix and retire obsolete admin routes and components.
Stop auto-running AKSRT_Settings_Migration, drop multi-option settings
merge and Zibll favicon aliases, remove the migration tools entry from
menus/schema, flatten admin sections so pages are not demoted into a
compat bag, and retire the migration-status payload for leftover SPA
routes after a full admin rebuild.