style: Cleaned up some minor styling issues

src/rag/providers/mod.rs

@@ -1,15 +1,8 @@
 mod yaml;
-// Use `self::` on every re-export in this file. Once a `mod duckdb;` sits here
-// alongside a dependency on the `duckdb` CRATE, a bare `pub use duckdb::...`
-// is ambiguous (E0659) — `use` paths resolve against both this module's items
-// and the extern prelude, and `use` declarations may not shadow.
 pub use self::yaml::YamlProvider;
 
 mod duckdb;
 pub use self::duckdb::DuckDbProvider;
-// `create()` in rag/mod.rs derives the sidecar path through this. It is `pub(crate)`
-// in providers/duckdb.rs, and the re-export must be `pub(crate)` too — a `pub use` of
-// a `pub(crate)` item is E0364/E0365.
 pub(crate) use self::duckdb::duckdb_path_from_yaml;
 
 mod qdrant;