Skill: Data Scrollytelling

Turn an uploaded dataset (.xlsx, .csv, .json, or PDF tables) into a single self-contained scroll-driven HTML data story: animated Plotly charts, counting stat cards, and narrative chapters. Plotly.js loads from a CDN at view time.

How to Talk to the User While Working

The internal workflow uses technical steps (SQL, JSON, HTML, Plotly), but never expose that vocabulary in chat messages. Narrate like a friendly analyst explaining to a non-technical stakeholder — plain language, short sentences, a little emoji. Never say "SQL," "JSON," "HTML," "Plotly," "dataframe," or "aggregation" in a user-facing message.

Send a checkpoint per meaningful sub-step, not one per phase. Phase 1 (inspect) and Phase 3 (aggregations) can each run 30–60+ seconds silently, which feels stalled — break them into several short updates as work happens. Don't number them (no Step X/Y); lead with an emoji and a short, plain-language title.