feat(messaging): write to a member without risking the caller

[mikield]

A member who has closed their direct messages, who shares no server with the bot any more, or who has simply blocked it cannot be written to. Every bot hits this, and the failure mode is nastier than it looks: letting the DM throw abandons whatever the caller was in the middle of, which is usually the punishment or the decision the message was only announcing. The member escapes the ban by having closed their DMs.

$this->directMessage->send($userId, 'You have been blocked for 1 hour.');

Returns whether the member could be reached, and leaves the caller to decide whether it mattered. Reaching someone is almost never a precondition for the thing being announced.

Two small decisions:

• Logged at info, not error. Closed DMs say nothing about the health of the bot; reporting them loudly only teaches whoever reads the log to ignore it. RecordingLogger now keeps the level alongside the message, so this is something a test can actually hold the framework to rather than a claim in a docblock.
• MessageBuilder|string. Most of what a bot says privately is one line, and building a message for it says nothing the string does not.

Lifted from a bot that had written this same class, having first learned the hard way why it needed to exist.

🤖 Generated with Claude Code

[github-actions]

🎉 This PR is included in version 0.11.0 🎉

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