fix: hide forecast maker for bot users

[CodexVeritas]

Closes #4881

Summary

• Short-circuits <ForecastMaker /> to render nothing when user.is_bot.
• Bots predict via the API and cannot edit forecasts in the UI; the maker rendered a "my prediction" overlay using the default starting curve, which bot owners mistook for their bot's actual forecast.
• Bots still see their submitted forecasts on the main timeline chart (DetailedQuestionCard).

Test plan

• Log in as a bot user and visit a continuous question — confirm no "my prediction" chart/slider is shown below the question chart.
• Log in as a bot user and visit a binary question — confirm no slider is shown.
• Log in as a bot user and visit a multiple-choice/group/conditional question — confirm no forecast input is shown.
• Log in as a non-bot user — confirm the forecast maker still renders normally.
• Confirm bots can still see their own submitted forecasts on the timeline chart at the top of the question page.

Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes
  • Forecast-making interface is now hidden for bot accounts, preventing default starting curves from being mistaken for actual bot forecasts.

[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: 5e65838a-403c-4724-89b2-a95a5af18823

📥 Commits

Reviewing files that changed from the base of the PR and between 19992f6 and 6a09f2e.

📒 Files selected for processing (1)

• front_end/src/components/forecast_maker/index.tsx

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📝 Walkthrough

Walkthrough

ForecastMaker now includes an early-return guard that hides the component entirely for bot users, preventing the default starting curve from being mistaken as an actual bot forecast. All rendering logic for non-bot users remains unchanged.

Changes

Bot forecast-maker hiding

Layer / File(s)	Summary
Bot forecast-maker visibility guard front_end/src/components/forecast_maker/index.tsx	Early-return check hides ForecastMaker when user?.is_bot is true, with explanatory comments about bot prediction constraints.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Possibly related PRs

• Metaculus/metaculus#4317: Both PRs apply bot-specific UI restrictions to forecasting—main PR hides ForecastMaker for bot users, and retrieved PR #4317 updates forecast-related components like front_end/src/components/forecast_maker/index.tsx (using useAuth/canPredictQuestion(post, user)) to prevent bot prediction behavior.

Suggested reviewers

• elisescu
• ncarazon
• cemreinanc

Poem

🤖 A bot once tried to forecast with glee,
But the UI said "nope, bot-free!"
The default curve hides away,
Preventing confusion that day,
Hopping through code, clear to see! 🐰

🚥 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 reflects the main change: hiding the forecast maker UI for bot users to prevent confusion with actual bot forecasts.
Linked Issues check	✅ Passed	The PR successfully implements the core requirement from issue #4881 by short-circuiting ForecastMaker to return null for bot users, preventing the misleading default starting curve from appearing.
Out of Scope Changes check	✅ Passed	The change is narrowly scoped to the ForecastMaker component with a bot check; no unrelated modifications are present.

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✨ 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 claude/issue-4881-dont-show-my-prediction-overlay

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[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)

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Cleanup triggered by PR close at 2026-06-17T12:00:10Z