✅ cover library text async builder path

docs/api/build-library-async-text-logger.md

@@ -39,6 +39,7 @@ Detailed rules explaining key parameters and behaviors
 - It always produces a concrete `FormattedConsoleSink` from `config.logger.sink.text_formatter` instead of branching on sink kinds.
 - Unlike `build_library_async_logger(...)`, this facade does not go through the full synchronous configured-logger build path first.
 - It uses the selected text-oriented `LoggerConfig` fields directly and therefore does not apply `LoggerConfig.queue` or preserve sync runtime sink controls.
+- A sync queue configured on `LoggerConfig.queue` is therefore ignored by this builder instead of being preserved behind the wrapped text-console async logger.
 - The returned facade wraps the same underlying `AsyncLogger[@bitlogger.FormattedConsoleSink]` value that `build_async_text_logger(...)` would return directly, so `run()`, `shutdown()`, failure/reset handling, and runtime-dependent close behavior are unchanged under the narrower public type.
 - Async state helpers such as `pending_count()`, `dropped_count()`, `state()`, `wait_idle()`, and failure-status inspection remain on the underlying `AsyncLogger[@bitlogger.FormattedConsoleSink]`, not on the returned facade itself.
 - `to_async_logger()` can recover the underlying full async logger if needed.

src-async/BitLoggerAsync_test.mbt

@@ -547,6 +547,30 @@ test "library async text logger can be built from typed config" {
   inspect(full.target, content="async.lib.text")
 }
 
+test "library async text logger builder ignores sync queue layer" {
+  let logger = build_library_async_text_logger(
+    AsyncLoggerBuildConfig::new(
+      logger=@bitlogger.LoggerConfig::new(
+        min_level=@bitlogger.Level::Warn,
+        target="async.lib.text.queued",
+        queue=Some(@bitlogger.QueueConfig::new(3, overflow=@bitlogger.QueueOverflowPolicy::DropNewest)),
+        sink=@bitlogger.SinkConfig::new(
+          kind=@bitlogger.SinkKind::TextConsole,
+          text_formatter=@bitlogger.TextFormatterConfig::new(show_timestamp=false, separator=" | "),
+        ),
+      ),
+      async_config=AsyncLoggerConfig::new(max_pending=2),
+    ),
+  )
+  let full = logger.to_async_logger()
+
+  inspect(logger.is_enabled(@bitlogger.Level::Error), content="true")
+  inspect(logger.is_enabled(@bitlogger.Level::Info), content="false")
+  inspect(full.target, content="async.lib.text.queued")
+  inspect(full.pending_count(), content="0")
+  inspect(full.dropped_count(), content="0")
+}
+
 async test "async logger can project to library async logger" {
   let logger = build_async_logger(
     AsyncLoggerBuildConfig::new(