fix(auth): show dembrane logo on unauthenticated pages instead of spinner

[ussaama]

WhitelabelLogoProvider initializes logoUrl to undefined and only gets
resolved by ParticipantHeader or useSidebarWhitelabelLogo — neither
mounts under AuthLayout. On a cold /login (initial visit or logout +
refresh), the value stayed undefined and LogoDembrane rendered its
forever.

Pass alwaysDembrane to the Logo in AuthLayout so the auth header
short-circuits whitelabel resolution and renders the dembrane logo
immediately. Workspace whitelabel behavior is unchanged — the sidebar
shell still resolves workspace.logo_url for authenticated routes.

Summary by CodeRabbit

• Style
  • Updated logo display in authentication screens.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 52fd227f-71fa-4869-ba83-8b169d261d27

📥 Commits

Reviewing files that changed from the base of the PR and between 2eccbd7 and 356075e.

📒 Files selected for processing (1)

• echo/frontend/src/components/layout/AuthLayout.tsx

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Walkthrough

The AuthLayout component's header Logo rendering is updated to explicitly enable the alwaysDembrane prop, changing from an implicit default to an explicit alwaysDembrane={true} configuration.

Changes

Logo Dembrane branding

Layer / File(s)	Summary
Logo alwaysDembrane prop echo/frontend/src/components/layout/AuthLayout.tsx	The header Logo component now explicitly passes alwaysDembrane={true} to enforce consistent branding on the auth layout header.

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and specifically describes the main change: passing alwaysDembrane to Logo in AuthLayout to display the dembrane logo instead of an infinite spinner on unauthenticated pages.
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.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/auth-logo-infinite-spinner

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