User-install contexts (DMs, group DMs, non-member guilds) now only show
commands that can actually work outside a guild:
- _command_needs_guild() heuristic checks @guild_only, Red privilege
levels (MOD/ADMIN/GUILD_OWNER), and user permission requirements,
walking the parent chain for subcommands.
- Autocomplete pre-filters the candidate pool in user-install contexts
and shows available DM-compatible commands when nothing is typed.
- Command execution blocks guild-only commands early with a clear
ephemeral error instead of letting them fail cryptically.
Also:
- Slash command description changed to 'Shine bright like a Ruby'
- Added [p]userslash setdescription command to change it on the fly
(persisted in Config, applied on cog load)
f75f51a6b4