Add guild message support and configuration to video_dl cog

[Claude]

Summary

This PR extends the video_dl cog to support automatic video downloads in guild channels with configurable permissions, in addition to the existing DM functionality for bot owners.

Changes

Core Features

• Config System: Added Red-bot Config system to store per-guild settings:

  • Guild enabled/disabled status (default: disabled)
  • Per-channel disabled list (default: all channels enabled)
  • Per-user disabled list (default: all users enabled)

• Permission Hierarchy:

  • Guilds are disabled by default (must be manually enabled per server)
  • Once enabled, all channels and users are allowed by default
  • Admins can disable specific channels or users as needed

Commands Added

Manual Download Command

• [p]download <url> - Manually download a video from a URL
  • Shows error messages when download fails
  • Works for any user in any context
  • Ephemeral responses to reduce clutter

Configuration Commands (Admin only)

All commands require manage_guild permission:

• [p]videodl enable - Enable automatic downloads for the server
• [p]videodl disable - Disable automatic downloads for the server
• [p]videodl channelenable [channel] - Enable automatic downloads in a channel
• [p]videodl channeldisable [channel] - Disable automatic downloads in a channel
• [p]videodl userenable <user> - Enable automatic downloads for a user
• [p]videodl userdisable <user> - Disable automatic downloads for a user
• [p]videodl status - Show current configuration

Behavior Changes

• Automatic Downloads: Now work in guild channels (when enabled) in addition to DMs
• Error Handling: Automatic downloads suppress error messages (fail silently) to avoid spam
• DM Behavior: Unchanged - still works for bot owner only in DMs

Technical Details

• Updated imports to include Config and checks from redbot.core
• Added _can_download_in_guild() method for permission checking
• Updated on_message listener to handle both DMs and guild messages
• All new commands use hybrid commands (work as both text and slash commands)
• All commands use ephemeral responses for privacy

Documentation Updates

• Updated cog docstring to reflect new functionality
• Updated info.json description
• Updated __init__.py data statement to reflect stored configuration data

Testing

• ✅ Python syntax validation passed
• ✅ Flake8 linting passed with zero errors
• ✅ All code follows repository conventions (hybrid commands, ephemeral responses, NumPy-style docstrings)

[psykzz]

@copilot fix tests, and make it so only the bot owner can update if the cog can run in a server / guild

[Copilot]

@copilot fix tests, and make it so only the bot owner can update if the cog can run in a server / guild

Done in c2d6427.

Bot owner restriction: videodl enable and videodl disable now require @checks.is_owner(). The channel/user subcommands keep @checks.admin_or_permissions(manage_guild=True) for server admins.

Tests fixed: The failing test_ignore_guild_messages was caused by MockMessage lacking a guild attribute and the Config mock not supporting await. Added a _make_guild_config_mock() helper with proper AsyncMock support, updated the cog fixture to inject it, and renamed the test to test_ignore_guild_messages_when_disabled. Also added 3 new tests covering guild-enabled, disabled-channel, and disabled-user cases. All 23 tests pass.