Improve agent prompting and classifier latency; clean up build warnings

crates/ai/src/diff_validation/mod.rs

@@ -175,7 +175,7 @@ impl fmt::Debug for DiffDelta {
             write!(
                 f,
                 "DiffDelta {{\nreplacement_line_range: {:?},",
-                &self.replacement_line_range
+                self.replacement_line_range
             )?;
             f.write_str("\n--insertion--\n")?;
             f.write_str(&self.insertion)?;
@@ -709,7 +709,7 @@ fn score_matches<T: Scorer>(
             log::debug!(
                 "Closest match with score {}:\n{}",
                 max_similarity,
-                &target_lines[range].join("\n")
+                target_lines[range].join("\n")
             );
         }
     }

crates/ai/src/index/full_source_code_embedding/codebase_index.rs

@@ -664,7 +664,7 @@ impl CodebaseIndex {
             if galaxy_core::channel::ChannelState::enable_debug_features() {
                 log::debug!(
                     "Trying to upsert changed files: {:?}",
-                    &changed_files.upsertions
+                    changed_files.upsertions
                 );
             }
             let (upserted_nodes, upsertion_fragment_metadata_updates) =