refactor: OAuth redirectUri 동적 처리로 변경

[yeondon125]

개요 💡

기존에 환경별로 하드코딩된 redirectUri 목록을 제거하고, window.location.origin을 기반으로 동적으로 생성하도록 변경합니다.
새로운 환경이 추가될 때마다 프론트엔드 코드를 수정할 필요 없이 자동으로 올바른 redirectUri가 설정됩니다.

작업내용 ⌨️

• LoginButton: stage/production origin 하드코딩 목록 제거 → window.location.origin/callback 동적 설정
• useOAuthLogin: mutation payload를 string(code)에서 { code, redirectUri } 구조로 변경
• CallbackPage: redirectUri를 window.location.origin/callback으로 동적 생성하여 로그인 요청에 포함, 로그인 성공 후 리다이렉트 URL도 동적 처리로 변경

[gemini-code-assist]

Code Review

This pull request simplifies the OAuth login flow by dynamically using window.location.origin for redirect URIs and next URLs, removing hardcoded stage and production domain checks. It also updates the useOAuthLogin hook to accept and pass the redirectUri parameter. However, a critical concern was raised regarding whether the admin domains are registered with the OAuth providers and if the admin application has a /callback route, as using window.location.origin dynamically could lead to redirect URI mismatches or 404 errors.

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[Copilot]

Pull request overview

This PR refactors the OAuth flow to stop relying on hardcoded environment-origin lists and instead derive redirectUri (and post-login redirect targets) from window.location.origin, so newly added environments won’t require front-end code changes to keep OAuth working.

Changes:

• LoginButton now builds redirectUri dynamically from the browser origin instead of stage/production allowlists.
• useOAuthLogin mutation payload changes from code: string to { code, redirectUri }.
• CallbackPage now sends redirectUri in the login request and dynamically determines the post-login redirect URL.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
packages/ui/src/components/LoginButton/index.tsx	Removes hardcoded origin mapping and builds OAuth redirect URI from runtime origin.
packages/api/src/hooks/auth/useOAuthLogin.ts	Updates OAuth login mutation to accept a structured payload including redirectUri.
apps/client/src/pageContainer/CallbackPage/index.tsx	Sends dynamic redirectUri to the login mutation and makes post-login redirect dynamic.

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[yeondon125]

c588711

어드민 환경에서 로그인 후 isAdmin 판변 과정에서 stage로 변경되는 문제점이 있어 해결하였습니다.

[junjuny0227]

수고하셨습니다

[s2yeons]

수고하셨습니다.