fix: center loading spinner on /setup page

[stylessh]

Summary

The loading spinner on the /setup page was appearing at the top-center of the viewport instead of the center. This happened because the default DashboardContentLoading component uses h-full, which relies on a height-providing parent — present in the protected dashboard layout but not on the standalone setup page.

Changes

• Added a SetupPageLoading component with min-h-dvh centering as the pendingComponent for the /setup route

Test Plan

• Navigate to /setup while the loader is pending and confirm the spinner appears centered in the viewport

Screenshots

Before	After
Spinner at top-center	Spinner at center-center

Summary by CodeRabbit

• New Features
  • Added a loading indicator to the setup page that displays while the page content is being loaded, improving the user experience during initial load.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 14413a44-9e71-4683-867d-88e663673f5f

📥 Commits

Reviewing files that changed from the base of the PR and between 96314e9 and bb67996.

📒 Files selected for processing (1)

• apps/dashboard/src/routes/setup.tsx

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📝 Walkthrough

Walkthrough

Added a SetupPageLoading component that displays a centered spinning loader icon and configured the /setup route to display this loader as the pendingComponent during route transitions, without modifying existing route logic or page rendering.

Changes

Cohort / File(s)	Summary
Setup Route Pending UI apps/dashboard/src/routes/setup.tsx	Introduced SetupPageLoading component rendering a centered LoaderCircleIcon spinner and added pendingComponent: SetupPageLoading to the route configuration to display loading state during route transitions.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

✨ 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 stylessh/fix-setup-spinner-center

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