fix: update Appender trait to include last_event_utc_datetime method

[ruslanti]

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[Copilot]

Pull request overview

This PR updates the runtime logger’s appender abstraction by introducing a new Appender trait and extending the fan-out writer to notify appenders of a UTC timestamp during flush operations.

Changes:

• Change AppenderBuilder::build to return Box<dyn Appender> instead of Box<dyn AsyncWrite + Send + Sync>.
• Introduce a new Appender trait (extends AsyncWrite) with last_event_utc_datetime(...).
• Update MultiWriter, NullAppender, and Console to use/implement the new trait and invoke the timestamp hook during poll_flush.

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[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 3 comments.

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

Comments suppressed due to low confidence (1)

crates/runtime/src/logger.rs:168

• Logger::new() was removed, which is a breaking change for any downstream code using the runtime::logger::Logger public API. If this crate is consumed outside the workspace, consider keeping pub fn new() -> Self as a thin alias to Default::default() (optionally deprecated) to preserve compatibility.

impl Logger {
    /// Builder-style method to attach an additional appender.
    pub fn with_appender<S: AppenderBuilder + Sync + Send + 'static>(mut self, sink: S) -> Self {
        self.appenders.push(Arc::new(sink));
        self
    }

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Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.

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