feat: add signin page

[peppescg]

Kapture.2025-11-17.at.16.53.45.mp4

[Copilot]

Pull Request Overview

This PR introduces a new signin page at /signin to replace the old /sign-in route, featuring an improved UI with the Toolhive branding and Okta SSO integration. The changes modernize the authentication flow with toast notifications and a reusable sign-out component.

Key changes:

• Migrated signin route from /sign-in to /signin with updated redirects across the application
• Added toast notifications via sonner library for better user feedback on authentication errors
• Created a new SignOut component for consistent sign-out functionality across pages

Reviewed Changes

Copilot reviewed 11 out of 14 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/lib/auth-client.ts	Updated default redirect URI from /sign-in to /signin and comment references
src/components/sign-out-button.tsx	New reusable sign-out button component with loading states
src/app/signin/page.tsx	New signin page with improved UI, Toolhive branding, and error toast notifications
src/app/sign-in/page.tsx	Removed old signin page implementation
src/app/page.tsx	Converted to server-side rendering with redirect to /signin for unauthenticated users
src/app/layout.tsx	Added Toaster component for application-wide toast notifications
src/app/catalogue/page.tsx	Updated redirect from /sign-in to /signin
src/app/catalog/page.tsx	New catalog page using server-side rendering with SignOut component
public/toolhive-icon.svg	Added Toolhive logo icon for branding
public/okta-icon.svg	Added Okta icon for SSO button
package.json & pnpm-lock.yaml	Added sonner dependency (v2.0.7) for toast notifications
dev-auth/oidc-provider.mjs	Fixed environment variable name from OIDC_ISSUER_URL to OIDC_ISSUER
dev-auth/README.md	Updated documentation to reference correct OIDC_ISSUER variable name

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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