test: run the feature scenarios on ubuntu 26.04

[ashwin153]

Softlight Overview

UX Score: 5/5

Softlight reviewed this change and found no issues.

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Moves every feature scenario off base:ubuntu-22.04 and onto base:ubuntu26.04.

Follow-up to #11. The devcontainer these features feed moved to ubuntu 26.04 in orianna-ai/devcontainer#79, so the scenarios were proving the features work on a base nothing actually uses any more.

Changes

• test/buildbuddy/scenarios.json
• test/cloud-sql-proxy/scenarios.json
• test/playwright/scenarios.json

Notes

The tag is ubuntu26.04, not ubuntu-26.04 — mcr dropped the hyphen at 26.04, and the hyphenated form 404s. It is the same tag orianna-ai/devcontainer already builds from.

The playwright scenario is the one to watch. Playwright's install-deps maps /etc/os-release against a list of known distributions, and 26.04 may not be in the version of Playwright that latest resolves to yet. If that is the case this PR will surface it as a red devcontainer-features job rather than a silent gap.

Testing

pre-commit run --all-files passes. The scenarios need Docker, so they run in CI.

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Generated by Claude Code

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Note

Low Risk
Test-only scenario image tag changes with no production runtime impact; possible CI failure if Playwright deps do not support 26.04 yet.

Overview
Aligns devcontainer feature scenario tests with the production devcontainer base by switching mcr.microsoft.com/devcontainers/base from ubuntu-22.04 to ubuntu26.04 in all three scenario configs (buildbuddy, cloud-sql-proxy, playwright).

Feature sets and users are unchanged; only the CI base image tag updates to match what downstream devcontainers actually use (including the ubuntu26.04 naming without a hyphen).

The playwright scenario is the main regression signal: Playwright install-deps may not yet recognize Ubuntu 26.04 when version: latest is resolved, which would fail the devcontainer-features job rather than leaving a silent mismatch.

^{Reviewed by Cursor Bugbot for commit ae8ece7. Configure here.}

Greptile Summary

The PR moves all feature scenarios from the Ubuntu 22.04 devcontainer base image to Ubuntu 26.04 so CI exercises the distribution used downstream.

• Updates the BuildBuddy scenario base image.
• Updates the Cloud SQL Proxy scenario base image.
• Updates the Playwright scenario base image, intentionally exercising its distribution-sensitive dependency installation.

Confidence Score: 5/5

The PR appears safe to merge, with the changed scenarios appropriately exercising the intended Ubuntu 26.04 base image.

The changes consistently update only scenario image references, and no concrete changed-code failure remains beyond compatibility outcomes that these scenarios are intentionally designed to detect.

Important Files Changed

Filename	Overview
test/buildbuddy/scenarios.json	Updates the BuildBuddy test scenario to use the intended Ubuntu 26.04 base image; no actionable defect identified.
test/cloud-sql-proxy/scenarios.json	Updates the Cloud SQL Proxy test scenario to use the intended Ubuntu 26.04 base image; no actionable defect identified.
test/playwright/scenarios.json	Updates the Playwright test scenario to exercise installation on Ubuntu 26.04, including the explicitly acknowledged compatibility boundary.

_{Reviews (1): Last reviewed commit: "test: run the feature scenarios on ubunt..." | Re-trigger Greptile}