console: move the remaining Node 20 pins to Node 24

[jasonhernandez]

Motivation

Vercel emailed us that the console project is on Node.js 20, which is EOL — they reject new builds on it after 2026-10-01. The Vercel-side setting is fixed in MaterializeInc/i2#3698; this PR clears the leftover Node 20 pins in this repo.

Worth stating up front, because it changes how urgent this looks: the console's Vercel builds are already on Node 24. All three deploy paths (ci/deploy/console.sh, ci/test/console/vercel-preview.sh, ci/deploy/console-impersonation.sh) run vercel build + vercel deploy --prebuilt under bin/ci-builder run stable, and ci-builder has been FROM node:24-trixie-slim since a152e93 (2026-07-15). Vercel never runs the build, so the deadline does not threaten our deploys. What's left is hygiene.

Description

Two independent commits, so either can be dropped:

1. console/package.json — volta.node 20.12.2 → 24.19.0 (current Node 24 LTS). This was the last thing steering local dev to Node 20; CI ignores it (uses corepack plus the image's node). volta.yarn and packageManager are unchanged.

2. console/misc/docker/Dockerfile — node:20-alpine → node:24-alpine. This is the hand-built self-hosted/impersonation image described in console/misc/docker/README.md, not built by CI. It was the only actual Node 20 execution left in the console.

Deliberately not changed:

• engines.node: ">=20.12.2" stays as is. 24 already satisfies it, and tightening it to >=24 would make Yarn complain in console/Dockerfile, which builds on Node 22. Raising the floor is a separate decision.
• console/Dockerfile (node:22-alpine) stays. Node 22 is supported until 2027, so it is not part of this deadline.

Verification

Built console/misc/docker/Dockerfile as committed on this branch, with BuildKit, and ran the result:

• corepack enable and yarn install --immutable succeed on node:24-alpine (25s; only the peer-dependency warnings this repo already emits).
• yarn build succeeds — vite 6.4.3, 5906 modules transformed, built in 13.2s, with SOURCE_MAPS=true and the Sentry plugin active (it skips the upload with no auth token, as expected locally).
• The resulting 126MB image starts and serves: docker run -p 3000:8080 -e MZ_ENDPOINT=... returns HTTP 200 and the console index.html.

The Volta bump is unverified by execution, and inert for CI by inspection: nothing under ci/, bin/, misc/, or .github/ reads volta, and both ci-builder variants (ci-builder-full and ci-builder-console) already take node from FROM node:24-trixie-slim.

Note that CI will run the full console suite on this PR (both files match the console/** input filter), but none of those steps build misc/docker/Dockerfile or read the Volta pin — a green build here is not evidence for either change.

🤖 Generated with Claude Code