✨ Forward file sink helpers through configured logger

docs/changes/0.3.0.md

@@ -30,6 +30,7 @@ version 0.3.0
 - feat: add `FileRotation`, `file_rotation(...)`, and size-based file rotation with retained backups for `file_sink(...)`
 - feat: support `sink.rotation.max_bytes` and `sink.rotation.max_backups` in JSON logger config
 - feat: add `FileSink::reopen()` and basic file sink failure counters via `open_failures()`, `write_failures()`, and `flush_failures()`
+- feat: forward file sink reopen and failure-counter helpers through `RuntimeSink` and `ConfiguredLogger`
 - feat: add `SplitSink`, `split_sink(...)`, and `split_by_level(...)` for routing records into different sinks by predicate or level
 - feat: add `Logger::bind(...)` as an ergonomic context-binding alias and `fields(...)` helper for tuple-based field construction
 
@@ -44,6 +45,7 @@ version 0.3.0
 - test: cover template-based formatter rendering and disabled token behavior
 - test: cover file rotation config parsing, config roundtrip, and native rotation behavior
 - test: cover file sink reopen behavior and backend-dependent failure counter paths
+- test: cover config-built file logger reopen and failure-counter helper access
 - test: cover split sink predicate routing and level-based routing behavior
 - test: cover `bind(...)` context composition and `fields(...)` helper behavior
 - test: add async logger lifecycle, config roundtrip, and batching/flush policy test seeds
@@ -59,6 +61,7 @@ version 0.3.0
 - docs: update formatter examples to demonstrate template-based text rendering
 - docs: update file sink examples to demonstrate rotation and backup retention
 - docs: document file sink reopen and observability counters in README variants
+- docs: clarify that config-built file loggers keep file control and observability helpers
 - docs: add split sink examples for level-based routing
 - docs: add `bind(...)` examples for reusable context binding
 - docs: update root README and English README with async adapter notes and current scope