deps: Bump Polars to latest upstream and adapt pivot API

Update Polars dependency rev to c032b90 in Cargo.toml and refresh README badge to match the new commit. Adapt src/cmd/pivotp.rs to the updated Polars pivot API by importing PivotColumnNaming and passing a default column_naming to the pivot call.

Author: jqnatividad

Cargo.lock

@@ -375,9 +375,9 @@ sled = { git = "https://github.com/dathere/sled", branch = "v0.34.7-bumped-parki
 #     (e.g. py-1.19.0:52ea381 to indicate that we are Python Polars 1.19.0,
 #      and the commit hash 52ea381)
 # ================================
-# QSV_POLARS_REV=3a72d40
+# QSV_POLARS_REV=c032b90
 # polars = { git = "https://github.com/pola-rs/polars", tag = "py-1.38.1", optional = true }
-polars = { git = "https://github.com/pola-rs/polars", rev = "3a72d40", optional = true }
+polars = { git = "https://github.com/pola-rs/polars", rev = "c032b90", optional = true }
 
 [features]
 default = ["mimalloc"]

Cargo.toml

@@ -103,7 +103,7 @@
 🧠: expensive operations are memoized with available inter-session Redis/Disk caching for fetch commands.  
 🗄️: [Extended input support](#extended-input-support).  
 🗃️: [Limited Extended input support](#limited-extended-input-support).  
-🐻‍❄️: command powered/accelerated by [![polars 0.53.0:3a72d40](https://img.shields.io/badge/polars-0.53.0:3a72d40-blue?logo=polars
+🐻‍❄️: command powered/accelerated by [![polars 0.53.0:c032b90](https://img.shields.io/badge/polars-0.53.0:c032b90-blue?logo=polars
 )](https://github.com/pola-rs/polars/releases/tag/rs-0.53.0) vectorized query engine.  
 🤖: command uses Natural Language Processing or Generative AI.  
 🏎️: multithreaded and/or faster when an index (📇) is available.  

README.md

@@ -84,7 +84,7 @@
 🧠: expensive operations are memoized with available inter-session Redis/Disk caching for fetch commands.  
 🗄️: [Extended input support](../../README.md#extended-input-support).  
 🗃️: [Limited Extended input support](../../README.md#limited-extended-input-support).  
-🐻‍❄️: command powered/accelerated by [![polars 0.53.0:3a72d40](https://img.shields.io/badge/polars-0.53.0:3a72d40-blue?logo=polars  
+🐻‍❄️: command powered/accelerated by [![polars 0.53.0:c032b90](https://img.shields.io/badge/polars-0.53.0:c032b90-blue?logo=polars  
 )](https://github.com/pola-rs/polars/releases/tag/rs-0.53.0) vectorized query engine.  
 🤖: command uses Natural Language Processing or Generative AI.  
 🏎️: multithreaded and/or faster when an index (📇) is available.  

docs/help/TableOfContents.md

@@ -76,7 +76,7 @@ use std::{
 use csv::ByteRecord;
 use foldhash::HashSet;
 use indicatif::HumanCount;
-use polars::prelude::*;
+use polars::{frame::PivotColumnNaming, prelude::*};
 use serde::Deserialize;
 
 use crate::{
@@ -703,6 +703,7 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
     let on_selector = cols(on_cols.iter().map(std::string::String::as_str));
     let index_selector = cols(actual_index_cols.iter().map(std::string::String::as_str));
     let values_selector = cols(actual_value_cols.iter().map(std::string::String::as_str));
+    let column_naming = PivotColumnNaming::default(); // Use default column naming convention
 
     let mut pivot_result = lf
         .pivot(
@@ -713,6 +714,7 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
             agg,
             args.flag_maintain_order,
             separator,
+            column_naming,
         )
         .collect()?;