multi logger

[ruslanti]

updates the runtime logging to support multiple log “appenders” per Logger

[Copilot]

Pull request overview

This PR updates the runtime logging infrastructure to support multiple log “appenders” per Logger, and updates call sites to use the new construction pattern.

Changes:

• Refactors runtime::logger::Logger to store multiple appenders and introduces MultiWriter to fan out writes.
• Updates contexts/tests to construct a logger via Logger::new() and attach appenders via with_appender where needed.
• Modifies release.toml release configuration (comments out allow-branch).

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
crates/runtime/src/logger.rs	Implements multi-appender logger support and a fan-out AsyncWrite (MultiWriter).
src/context.rs	Updates logger creation to attach a Console appender under the new API.
crates/http-service/src/executor/http.rs	Updates test context logger construction to match the new Logger::new() API.
release.toml	Comments out allow-branch, changing release branch restrictions.

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