LinkedIn data post: use one portrait headline chart, not a dashboard screenshot

For a LinkedIn post about a data project, a screenshot of a BI dashboard (Databricks AI/BI, Lakeview and similar) reads badly. A dashboard has many small widgets, and on a phone the text is unreadable at feed size.

What worked better: - One matplotlib chart at 1080x1350 (4:5 portrait), the largest image size LinkedIn shows in the feed. - The headline written into the image as large text, matching the post's first line. - One comparison with two contrasting colors; a short subtitle with the labeled numbers; data source and caveat in small footer text. - Optionally a second image (the dashboard screenshot) to show the work is real; LinkedIn lays two images side by side.

Keep the chart reproducible: render it from the same exported JSON the blog charts use, so a data fix (here a candy-name matching bug that changed the counts) updates both. Before re-rendering, recheck any claim printed in the headline against the new data.