fix: rustfmt nightly comment wrapping and import ordering

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: g-talbot

quickwit/quickwit-parquet-engine/src/merge/policy/const_write_amplification.rs

@@ -23,8 +23,8 @@
 //!
 //! 1. Separate mature splits from immature.
 //! 2. Group immature splits by `num_merge_ops` (the merge level).
-//! 3. Within each level, sort by creation time (oldest first) and greedily
-//!    accumulate splits until `merge_factor` or `target_split_size_bytes`.
+//! 3. Within each level, sort by creation time (oldest first) and greedily accumulate splits until
+//!    `merge_factor` or `target_split_size_bytes`.
 //! 4. Each merge operation contains splits from exactly one level.
 //!
 //! This bounds write amplification: each byte is rewritten at most

quickwit/quickwit-parquet-engine/src/merge/policy/scope.rs

@@ -83,9 +83,8 @@ pub fn group_by_compaction_scope(
 
 #[cfg(test)]
 mod tests {
-    use crate::split::{ParquetSplitId, ParquetSplitKind, ParquetSplitMetadata, TimeRange};
-
     use super::*;
+    use crate::split::{ParquetSplitId, ParquetSplitKind, ParquetSplitMetadata, TimeRange};
 
     /// Build a test split with the given scope fields.
     fn test_split(