refactor(frontend): runner_pool -> rivet_pool

[jog1t]

Description

Please include a summary of the changes and the related issue. Please also include relevant motivation and context.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[jog1t]

• refactor(frontend): runner_pool -> rivet_pool #5107 👈 (View in Graphite)
• refactor(frontend): modify onboarding for rivet compute #5106
• fix(frontend): align log region column and disable selection on metadata #5105
• fix(frontend): clickable namespaces in deployments table #5104
• fix(fontend): less monoscaped #5103
• fix(frontend): meaningful serverless metadata errors #5102
• main

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[jog1t]

Merge activity

• May 26, 10:23 PM UTC: A user started a stack merge that includes this pull request via Graphite.
• May 26, 10:35 PM UTC: Graphite rebased this pull request as part of a merge.
• May 26, 10:35 PM UTC: @jog1t merged this pull request with Graphite.

[claude]

Code Review: refactor(frontend): runner_pool -> rivet_pool

Overview

This is a minimal one-line fix that corrects the displayed environment variable name in the frontend UI from RUNNER_POOL to RIVET_POOL in frontend/src/app/env-variables.tsx. The rest of the codebase already uses RIVET_POOL consistently (runtime, examples, docs, tests), so this was the only stale reference.

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Code Quality

• Correct: The fix aligns the UI display with the actual env var name used everywhere else (rivetkit-typescript/packages/rivetkit/src/utils/env-vars.ts, examples, Cloudflare/Supabase docs, etc.).
• No regressions: The remaining RUNNER_POOL strings in the codebase are unrelated — they are internal Rust timing constants (RUNNER_POOL_ERROR_CHECK_DELAY / RUNNER_POOL_ERROR_CHECK_INTERVAL) in engine/packages/guard/src/routing/pegboard_gateway/mod.rs and do not affect env var naming.
• Consistent with getting-started.tsx and use-railway-template-link.ts, both of which already use RIVET_POOL.

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Suggestions

• PR description is empty. The boilerplate checklist was left unchecked and no description was filled in. While the change is self-evident, it is good practice to briefly note what was wrong and confirm it was tested.
• No test coverage needed for a display-string fix, but a quick manual check that the env variables panel renders RIVET_POOL would be worth noting in the PR body.

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Verdict

LGTM. The change is correct, complete, and consistent with the rest of the codebase. Minor process nit: fill in the PR description.