[jamiboym]

Summary

Enables five suites in deploy mode whose builds are expected to fail, or whose setup used patchFile or a runtime-only env.

• use-cache-unknown-cache-kind, use-cache-without-experimental-flag, proxy-and-middleware-conflict: outside dev the tests assert next.start() rejects and read the build diagnostics from next.cliOutput, with toContain checks in deploy mode and the existing snapshots locally. The first two previously branched on isNextStart, so in deploy mode their dev-only createSandbox tests ran instead. proxy-and-middleware-conflict drops its blanket skipDeployment.
• cache-components-segment-configs: same next.start() rejection pattern. The layout-propagation test used next.patchFile('app/layout.tsx', …), which deploy mode doesn't support. It now has its own nextTestSetup whose overrideFiles swaps in fixtures/layout-runtime/app/layout.tsx. The Turbopack location assertion moves from ./app/layout.tsx:2:24 to :1:14 to match the fixture file.
• cache-components-errors/console-patch: with the gate removed in the Sept 9 retry runs, the deployment failed because NODE_OPTIONS='--require ./patch-console.js' is forwarded as both a build and a runtime env, and Vercel's own CLI process crashed with Cannot find module './patch-console.js'. In deploy mode the preload is now scoped to the build via buildCommand; dev and start keep env. The deploy branch asserts the deployment succeeds (so the build didn't fail on the patched console.log) and that the patched log line appears in the build output. The local snapshots are unchanged.

Verification

• Prettier and ESLint on the changed files.
• Ran all five suites locally against this branch's local packages; every suite passed in each of:
  • next dev and next start, with Turbopack and with webpack
  • deploy, Turbopack + adapter (the PR deploy job's variant)
  • deploy, Webpack legacy (one of the release workflow's variants)
• Not run: Turbopack legacy deploy (NEXT_ENABLE_ADAPTER=0); my account lacks deploy access to the Turbopack test team's project.

[github-actions]

Tests Passed

Commit: 284440b

[eps1lon]

dddd