3.5.0 — Looking for Game plugin, welcome-message fix

Added

• New plugin: Looking for Game. /lfg posts a group-up call that pings a configured role, with a Join button other members press to sign up, an optional start time that re-pings the joiners when it arrives, and a "Done looking" button for the creator. Posts store nothing in shrkbot's database; the state lives in the Discord message itself, and the post is deleted when it expires. (#201, #202)
• A Looking for Game config page on the website: which roles can be pinged, which channels allow posts, required and excluded role gates, a minimum-membership age, a cooldown, and how long a post stays up. Each pingable role can add its own role gates and override the channel list and membership age, and denied /lfg attempts can be surfaced on the logging page. (#204)

Fixed

• Welcome messages no longer render @unknown-user on servers with membership screening. The member is still pending when Discord announces the join, so the mention never resolved and stayed broken on the posted message; the welcome is now held until onboarding completes. On those servers the welcome now lands after Discord's own join message instead of before it. (#206)