Add error indicator column to runner pool table

[Copilot]

Runner pools now display error state in the UI, aligning with actor error surfacing (PR #3730). When a runner pool has an error, a red exclamation icon appears in a new status column.

Changes

UI

• Added status column (first column) to runner configs table
• RunnerPoolErrorIndicator component renders when error field exists
• Icon: faExclamationTriangle, color: text-red-500, tooltip: "Error connecting to runner pool"
• Screen reader label: "Status"

Type safety

type RunnerConfigWithError = Rivet.RunnerConfig & { error?: unknown };

function RunnerPoolErrorIndicator({ config }: { config: Rivet.RunnerConfig }) {
  const error = (config as RunnerConfigWithError).error;
  if (!error) return null;
  return <WithTooltip content="Error connecting to runner pool">
    <Icon icon={faExclamationTriangle} className="text-red-500" />
  </WithTooltip>;
}

Maintainability

• Extracted TABLE_COLUMN_COUNT = 6 constant
• Error type intentionally unknown - backend may return string, enum, or object

Backend integration

UI is prepared for when backend adds error field to RunnerConfig. Expected error types from ServerlessMetadataError enum: InvalidRequest, RequestFailed, RequestTimedOut, NonSuccessStatus, InvalidResponseJson, InvalidResponseSchema.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• pkg.pr.new
  • Triggering command: /usr/local/bin/node node /home/REDACTED/.local/share/pnpm/.tools/pnpm/10.13.1/bin/pnpm install grep -l \|type Runner nents/ui/helpers/min-height.ts ndor/bin/grep \|type Runner c/handler.ts rep grep -l \|type Runner ermissions.ts gine-data-provider.tsx \|type Runner s nfig/composer/ves/^session\.save_handler=\(.*\)$/\1/p grep (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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[linear]

FRONT-906 Show runner pool error indicator (exclamation) in UI

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Project	Deployment	Review	Updated (UTC)
rivet-inspector	Ready	Preview, Comment	Jan 2, 2026 8:48pm

3 Skipped Deployments

Project	Deployment	Review	Updated (UTC)
rivet-cloud	Ignored		Jan 2, 2026 8:48pm
rivet-site	Ignored	Preview	Jan 2, 2026 8:48pm
rivetkit-serverless	Skipped		Jan 2, 2026 8:48pm