Fix cargo fmt and clippy warnings in pgwire client and import ordering

- Reorder crate:: imports in base.rs and core/utils.rs to satisfy rustfmt
  (external crates before local crate imports, within their own groups)
- Fix trailing comment alignment in pgwire.rs match arms per rustfmt rules
- Replace needless range loop with iterator in parse_data_row (clippy)

https://claude.ai/code/session_01GzGtjMcwBXyVW3uKW4F2Ai

Author: claude

src/commands/base.rs

@@ -11,7 +11,6 @@ use std::path::Path;
 use std::process;
 
 use log::{debug, error, info};
-use crate::utils::pgwire::PgwireLite;
 
 use crate::core::config::{get_full_context, render_globals, render_string_value};
 use crate::core::env::load_env_vars;
@@ -25,6 +24,7 @@ use crate::core::utils::{
 use crate::resource::manifest::{Manifest, Resource};
 use crate::resource::validation::validate_manifest;
 use crate::template::engine::TemplateEngine;
+use crate::utils::pgwire::PgwireLite;
 
 /// Core state for all command operations, equivalent to Python's StackQLBase.
 pub struct CommandRunner {

src/core/utils.rs

@@ -12,8 +12,8 @@ use std::thread;
 use std::time::{Duration, Instant};
 
 use log::{debug, error, info, warn};
-use crate::utils::pgwire::PgwireLite;
 
+use crate::utils::pgwire::PgwireLite;
 use crate::utils::query::{execute_query, QueryResult};
 
 /// Exit with error message. Matches Python's `catch_error_and_exit`.