[Chore] Release Roomote 0.4.2 hotfix for saved Slack continue

[roomote-roomote]

Opened on behalf of Matt Rubens. Follow up by mentioning @roomote-roomote, in the web UI, or in Slack.

Related issue

Hotfix request for #299 only — not a full develop cut.

Why this PR exists

• A maintainer explicitly invited this PR in the linked issue or discussion
• I am a maintainer / this is internal Roomote work

What changed

Hotfix release 0.4.2 cut from current production (main / v0.4.1) with only the already-merged #299 Slack setup fix:

• Cherry-picks the continue-button fix so revisiting setup with saved Slack credentials shows an enabled Continue again (no blank actions strip).
• Bumps the single product version 0.4.1 → 0.4.2 and adds the matching changelog section.
• Intentionally excludes other unreleased work that is currently on develop so this ships as a true production hotfix.

Changelog (0.4.2)

• Onboarding Slack setup no longer strands revisits with saved credentials on a form with no Continue action: the step button is shown again when the intro screen is skipped.

How it was tested

• pnpm run test:release-scripts — 8/8 pass
• @roomote/web regression suite StepAuthEnvVars.client.test.tsx (includes the saved-Slack revisit case) — 15/15 pass
• Pre-push: lint:fast, check-types:fast, and knip on the hotfix branch

After merge (operators)

1. Merge this PR into main with a merge commit (main rules require it). Tagging / GHCR publish follows the existing main release workflows for v0.4.2.
2. After v0.4.2 is tagged, merge the companion develop sync #303 so develop records 0.4.2 and the next normal cut does not re-use that tag.

Related PRs

• develop version-record companion

Checklist

• The PR title follows the repo convention: [Fix], [Feat], [Improve], [Refactor], [Docs], or [Chore] followed by a user-facing description
• This PR is small and scoped to one change
• pnpm lint and pnpm check-types pass locally
• I added tests or included a clear manual validation note above
• I removed secrets, tokens, private keys, and customer data from code, logs, and screenshots
• If this change should appear in the changelog, I ran pnpm changeset

[roomote-roomote]

No code issues found. See task

Reviewed the 0.4.2 hotfix. The providerOwnsActions fix in StepAuthEnvVars.tsx now exactly mirrors SlackSetupExperience's intro guard (!showManualSlackValues && !runtimeSatisfied && !savedSatisfied), so a saved-Slack revisit correctly falls through to the step-owned Continue button instead of rendering no action. The regression test covers that path, and the version bump plus changelog entry are consistent (no lingering 0.4.1 references).

_{Reviewed 09c42fd}