remove Y axis for discrete questions in feed and in collapsed group view

[ncarazon]

Resolves #4900

Removes the Y-axis from discrete question distribution charts in feed cards and collapsed group rows.

Implemented changes:

• Added support for hiding the chart Y-axis while preserving the distribution, median/range markers, and X-axis.
• Applied the hidden Y-axis behavior to discrete questions in feed cards and collapsed group forecast rows.

Summary by CodeRabbit

• New Features
  • Added an option to hide the chart’s Y-axis on certain views.
  • Discrete questions now automatically display charts with a cleaner layout by hiding the Y-axis where appropriate.
• Bug Fixes
  • Updated chart spacing so labels no longer reserve unnecessary room when the Y-axis is hidden.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 7052366e-6e67-4f01-a009-683d42b7d3fe

📥 Commits

Reviewing files that changed from the base of the PR and between 5d97679 and ae7238b.

📒 Files selected for processing (3)

• front_end/src/components/charts/continuous_area_chart.tsx
• front_end/src/components/forecast_maker/continuous_group_accordion/group_forecast_accordion_item.tsx
• front_end/src/components/post_card/question_tile/question_continuous_tile.tsx

🚧 Files skipped from review as they are similar to previous changes (3)

• front_end/src/components/post_card/question_tile/question_continuous_tile.tsx
• front_end/src/components/forecast_maker/continuous_group_accordion/group_forecast_accordion_item.tsx
• front_end/src/components/charts/continuous_area_chart.tsx

---

📝 Walkthrough

Walkthrough

ContinuousAreaChart gains a hideYAxis prop that derives a showYAxis flag controlling both horizontal padding and right-side Y-axis rendering. The group accordion item and question tile (three render paths) pass hideYAxis={question.type === QuestionType.Discrete} to suppress the Y axis for discrete questions.

Changes

Discrete Y-axis hiding

Layer / File(s)	Summary
ContinuousAreaChart hideYAxis prop and showYAxis logic front_end/src/components/charts/continuous_area_chart.tsx	Adds optional hideYAxis?: boolean prop (default false), derives internal showYAxis boolean (true when graphType === "cdf" or discrete without hideYAxis), gates horizontalPadding memo and VictoryAxis rendering on showYAxis.
Discrete question call sites front_end/src/components/forecast_maker/continuous_group_accordion/group_forecast_accordion_item.tsx, front_end/src/components/post_card/question_tile/question_continuous_tile.tsx	Group accordion imports QuestionType and passes hideYAxis to ContinuousAreaChart; question tile adds the same prop across mobile overlay, large-screen overlay, and regular layout render paths.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Suggested reviewers

• elisescu
• hlbmtc
• cemreinanc

Poem

🐇 Hop hop, the axis fades away,
Discrete charts now breathe and play,
No more wiggly lines of mystery,
Just distributions — pure and free!
The rabbit hid what cluttered the view ✨

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: hiding the Y axis for discrete questions in feed and collapsed group views.
Linked Issues check	✅ Passed	The code adds a hideYAxis option and applies it to discrete feed and collapsed-group charts as requested.
Out of Scope Changes check	✅ Passed	The changes stay focused on discrete-question chart rendering and do not introduce unrelated behavior.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/remove-discrete-question-y-axis

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[github-actions]

Cleanup: Preview Environment Removed

The preview environment for this PR has been destroyed.

Resource	Status
🌐 Preview App	Deleted
🗄️ PostgreSQL Branch	Deleted
⚡ Redis Database	Deleted
🔧 GitHub Deployments	Removed
📦 Docker Image	Retained (auto-cleanup via GHCR policies)

---

Cleanup triggered by PR close at 2026-06-30T14:31:55Z