🌐 [translation-sync] Add Polars lecture to complement existing Pandas lecture (#20)

* Update translation: lectures/polars.md

* Update translation: .translate/state/polars.md.yml

* Update translation: lectures/_toc.yml

* polars: « columnaire » -> « colonnaire »

"Colonnaire" is the standard French adjective for "columnar" in data
engineering; "columnaire" is an anglicism. Flagged independently by both
the translation reviewer and Copilot on #20.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: mmcky

.translate/state/polars.md.yml

@@ -0,0 +1,6 @@
+source-sha: 1c60c7df6e0c6fbebba3df2f7a9cb1b2c0e59172
+synced-at: "2026-07-30"
+model: claude-sonnet-5
+mode: NEW
+section-count: 6
+tool-version: 0.24.0

lectures/_toc.yml

@@ -31,6 +31,7 @@ parts:
   chapters:
   - file: pandas
   - file: pandas_panel
+  - file: polars
 - caption: More Python Programming
   numbered: true
   chapters: