phpbotgram

Built by ErrorsMiddleware from the offending Update and the original Throwable, then forwarded to the dispatcher's errors observer so that registered error handlers can claim the failure (returning a substitute value), inspect it, or fall through and let the exception re-raise.

This class is hand-authored — it is not produced by the Phase 2 codegen because the schema doesn't describe it (ErrorEvent exists only in the dispatcher domain, not in the Telegram Bot API wire format). To keep make regenerate from clobbering this file, the relative path Types/ErrorEvent.php is listed in \Gruven\PhpBotGram\Generator\FileEmitter::PROTECTED_PATHS.

Differences from upstream:

1. exception is typed as Throwable rather than Exception. PHP's Error hierarchy (e.g. TypeError, DivisionByZeroError) flows through the same try/catch (Throwable) path in ErrorsMiddleware, so the value object must accept both branches of the standard interface.
2. The class extends nothing — upstream's ErrorEvent extends TelegramObject for pydantic serialisation, but our TelegramObject carries Bot plumbing that doesn't apply to a dispatcher-synthetic event. Keeping ErrorEvent as a standalone readonly value object avoids leaking BotContextController semantics into the error pipeline.