refactor(skills): consolidate Rust Bazel rules

src/skills/style/rust/rules/bazel.md

@@ -1,5 +1,28 @@
 # Bazel rules
 
+## Keep Rust tests in separate files
+
+### Rule
+
+Put Rust tests in separate `*_test.rs` files.
+Do not add inline `#[cfg(test)]` modules.
+
+### Rationale
+
+Separate test files keep production modules focused and match the repository's Bazel test layout.
+
+## Declare Rust tests in Bazel
+
+### Rule
+
+Declare Rust test files in the nearest Bazel `BUILD` file with `rust_test`.
+Do not add `[[test]]` entries to `Cargo.toml` unless the operator explicitly requests Cargo test declarations.
+
+### Rationale
+
+Bazel is the source of truth for Rust test targets in this repository.
+Keeping test declarations in Bazel avoids duplicate test target lists.
+
 ## Use one source input style per `rust_test`
 
 ### Rule

src/skills/style/rust/rules/tests.md

@@ -1,13 +0,0 @@
-# Test rules
-
-## Keep Rust tests in separate files
-
-### Rule
-
-Put Rust tests in separate `*_test.rs` files.
-Do not add inline `#[cfg(test)]` modules.
-Declare each test file in the nearest Bazel `BUILD` file with a `rust_test` target.
-
-### Rationale
-
-Separate test files keep production modules focused and match the repository's Bazel test layout.