Refine poll headers, Markdown takeaways and demographic chart data

[xrendan]

Poll pages now show a tighter publication header and let readers explore demographic results directly beneath each chart.

• Remove poll authors from the visible page and browser print header, enlarge the date, and reduce header spacing.
• Show an optional italic subtitle below the title, with compact spacing above the date.
• Render Markdown in poll key takeaways and memo key messages while preserving numbering.
• Improve chart tooltips and fetch crosstabs on View data, matching charts to question IDs. Use the BCDS demographic dropdown and simplified demographic titles; omit unknown categories and suppress values with fewer than 50 respondents.
• Widen tables only when their columns need the space, keep prose readable, and move the sidebar left on laptop screens.

Validation: TypeScript, ESLint for affected components and libraries, all 14 poll tests, and git diff checks pass. Based on latest main.

The optional subtitle requires the companion York Factory subtitle migration/API changes, which remain local; it stays hidden until the API provides a value. Customer download suppression is handled by York Factory PR #125, with defensive suppression in these frontend tables.

[greptile-apps]

Greptile Summary

Poll publication pages now use a compact author-free header, support optional subtitles and Markdown takeaways, and expose crosstab data beneath inline charts.

• Adds exact question-ID matching, localized breakdown labels, unknown-category filtering, and defensive suppression for samples below 50.
• Uses a generic “Breakdown” selector so demographic, question-based, and survey-arm dimensions are no longer mislabeled.
• Updates poll layout, chart tooltips, table sizing, documentation, tests, and the shared component dependency.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
src/components/content/PollChartData.tsx	Adds lazy crosstab loading and a generic breakdown selector, resolving the previous inaccurate demographic label.
src/lib/polls/crosstabs.ts	Validates crosstab exports, matches exact question IDs, filters unknown categories, and suppresses columns with insufficient bases.
src/components/content/InlineChart.tsx	Integrates the shared tooltip and switches View data to crosstabs when an authenticated download URL is available.
src/components/content/ArticlePage.tsx	Applies poll-specific headers and layout, renders key messages as Markdown, and passes crosstab URLs into article charts.
src/app/memos/[slug]/MemoHero.tsx	Adds optional subtitles and a compact poll variant that omits author and supporter presentation.
src/lib/api/articles.ts	Normalizes the optional poll subtitle at the API boundary.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart LR
A[Poll article chart] --> B[View data]
B --> C[Authenticated crosstabs download]
C --> D[Parse and suppress bases below 50]
D --> E[Match table by question ID]
E --> F[Choose breakdown]
F --> G[Render overall and selected columns]

Loading

_{Reviews (2): Last reviewed commit: "Label all crosstab comparisons as breakd..." | Re-trigger Greptile}