🐛(frontend) redirect home page to login when homepage feature is disabled

[maartendra]

Purpose

FRONTEND_HOMEPAGE_FEATURE_ENABLED=false is supposed to disable the homepage: the Auth guard sends anonymous visitors on / straight to the login page instead of /home. But the /home page itself doesn't check the flag, so anyone following a direct link to /home/ still gets the full stock homepage. Since the auth guard only forces login on / and /docs (/home is an "allowed" path), nothing stops it from rendering.

We noticed this on our own instance (we run Docs with a custom skin as part of a sovereign EU business workspace): with the flag off, every entry point correctly leads to our SSO login, except a deep link to /home/, which still shows the default homepage.

Proposal

• When FRONTEND_HOMEPAGE_FEATURE_ENABLED is false, /home now redirects anonymous visitors to the login page (gotoLogin(false) — no point returning to /home after login), mirroring the Auth component's behavior for /
• e2e test: with the flag overridden to false, a direct visit to /home/ lands on the login page (sibling of the existing flag test)

External contributions

General requirements

• I have read and followed the contributing guidelines
• I have read and agreed to the Code of Conduct
• I have added corresponding tests for new features or bug fixes (if applicable)

Skip the checkbox below 👇 if you're fixing an issue or adding documentation

• Before submitting a PR for a new feature I made sure to contact the product manager

CI requirements

• I made sure that all existing tests are passing
• I have signed off my commits with git commit --signoff (DCO compliance)
• I have signed my commits with my SSH or GPG key (git commit -S)
• My commit messages follow the required format: <gitmoji>(type) title description
• I have added a changelog entry under ## [Unreleased] section (if noticeable change)

AI requirements

• I used AI assistance to produce part or all of this contribution
• I have read, reviewed, understood and can explain the code I am submitting
• I can jump in a call or a chat to explain my work to a maintainer

🤖 Generated with Claude Code

https://claude.ai/code/session_01PhqB4SHsHCuMfprwLEN3rR

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 43843342-bf81-47fa-805e-d6ff2fee2d71

📥 Commits

Reviewing files that changed from the base of the PR and between cc66ce1 and 9e7a9e5.

📒 Files selected for processing (2)

• src/frontend/apps/e2e/__tests__/app-impress/home.spec.ts
• src/frontend/apps/impress/src/pages/home/index.tsx

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Walkthrough

The Home page reads FRONTEND_HOMEPAGE_FEATURE_ENABLED and redirects unauthenticated users to login when the homepage is disabled. Its loading state now covers disabled-homepage and authenticated states. End-to-end coverage verifies direct /home/ navigation renders the Keycloak login page, and the changelog documents the fix.

Estimated code review effort: 2 (Simple) | ~10 minutes

Suggested reviewers: lunika, ovgodd

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the main change: redirecting the home page to login when the homepage feature is disabled.
Description check	✅ Passed	The description accurately explains the bug, the fix, and the added tests, matching the changeset.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@src/frontend/apps/e2e/__tests__/app-impress/home.spec.ts`:
- Around line 182-195: Add a positive Playwright test alongside the existing
disabled-feature case in the homepage navigation suite. Enable
FRONTEND_HOMEPAGE_FEATURE_ENABLED via overrideConfig, navigate directly to
/home/, and assert homepage content such as the first header is visible rather
than the login page.

In `@src/frontend/apps/impress/src/pages/home/index.tsx`:
- Around line 35-43: Update the home page’s useConfig-derived state and the
useEffect redirect guard so gotoLogin(false) runs only after configuration has
finished loading, using isFetched or the equivalent flag. Include the same
loading guard in the conditional rendering branch so the homepage remains
available while the feature flag is unresolved.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: b86534ce-b4fd-4ae7-85d2-02a6f44139c1

📥 Commits

Reviewing files that changed from the base of the PR and between 57ad4f4 and cc66ce1.

📒 Files selected for processing (3)

• CHANGELOG.md
• src/frontend/apps/e2e/__tests__/app-impress/home.spec.ts
• src/frontend/apps/impress/src/pages/home/index.tsx