Fix Rust conditional derives and unsafe indexing

changelog.d/unreleased/2052.fixed.md

@@ -0,0 +1,17 @@
+---
+category: fixed
+issues:
+  - 2052
+affected:
+  - src/CodeIndex/Indexer/References/ReferenceExtractor.cs
+  - src/CodeIndex/Indexer/References/Languages/RustReferenceExtractor.cs
+  - tests/CodeIndex.Tests/ReferenceExtractorTests.cs
+---
+
+## English
+
+- **Rust multiline conditional derives now emit trait type references (#2052)** - `cfg_attr(..., derive(...))` attributes spanning multiple lines and nested cfg predicates now index every derived trait, including qualified trait paths.
+
+## 日本語
+
+- **Rust の複数行条件付き derive が trait 型参照を出すようになりました (#2052)** - 複数行にまたがる `cfg_attr(..., derive(...))` とネストした cfg 条件でも、修飾付き trait path を含めて各 derive trait をインデックスします。

changelog.d/unreleased/2053.fixed.md

@@ -0,0 +1,18 @@
+---
+category: fixed
+issues:
+  - 2053
+affected:
+  - src/CodeIndex/Indexer/Symbols/SymbolExtractor.cs
+  - src/CodeIndex/Indexer/References/Languages/RustReferenceExtractor.cs
+  - tests/CodeIndex.Tests/SymbolExtractorTests.cs
+  - tests/CodeIndex.Tests/ReferenceExtractorTests.cs
+---
+
+## English
+
+- **Rust unsafe blocks and mutable reference types are now indexed (#2053)** - `unsafe { ... }` regions are emitted as scoped containers, and `&mut Type` positions now keep the referenced type visible for unsafe-code audits.
+
+## 日本語
+
+- **Rust の unsafe block と mutable reference 型をインデックスするようになりました (#2053)** - `unsafe { ... }` 領域をスコープ付きコンテナとして出力し、`&mut Type` 位置の参照型も unsafe コード監査で見えるようにしました。