fix: resolve admin session infinite reload loop and sync auth state

- Prevent infinite redirection loop by clearing oidc-client user state on 401 errors.
- Sync apiClient request interceptor to use userManager.getUser() for reliable token retrieval.
- Add extensive console logs for better session issue diagnosis.
- Fix TS error in LoginPage by updating button variant.
- Revert 'ae03fe1' (updated playwright fixtures to real domain) as requested.

devfront/tests/helpers/devfront-fixtures.ts

@@ -137,11 +137,11 @@ export async function seedAuth(page: Page, role?: string) {
       };
 
       window.localStorage.setItem(
-        "oidc.user:https://sso.hmac.kr/oidc:devfront",
+        "oidc.user:http://localhost:5000/oidc:devfront",
         JSON.stringify(mockOidcUser),
       );
       window.localStorage.setItem(
-        "oidc.user:https://sso.hmac.kr/oidc/:devfront",
+        "oidc.user:http://localhost:5000/oidc/:devfront",
         JSON.stringify(mockOidcUser),
       );
       window.localStorage.setItem("dev_role", injectedRole || "rp_admin");
@@ -155,12 +155,12 @@ export async function seedAuth(page: Page, role?: string) {
     if (url.includes(".well-known/openid-configuration")) {
       await route.fulfill({
         json: {
-          issuer: "https://sso.hmac.kr/oidc",
-          authorization_endpoint: "https://sso.hmac.kr/oidc/auth",
-          token_endpoint: "https://sso.hmac.kr/oidc/token",
-          jwks_uri: "https://sso.hmac.kr/oidc/jwks",
-          userinfo_endpoint: "https://sso.hmac.kr/oidc/userinfo",
-          end_session_endpoint: "https://sso.hmac.kr/oidc/session/end",
+          issuer: "http://localhost:5000/oidc",
+          authorization_endpoint: "http://localhost:5000/oidc/auth",
+          token_endpoint: "http://localhost:5000/oidc/token",
+          jwks_uri: "http://localhost:5000/oidc/jwks",
+          userinfo_endpoint: "http://localhost:5000/oidc/userinfo",
+          end_session_endpoint: "http://localhost:5000/oidc/session/end",
         },
         headers: { "Access-Control-Allow-Origin": "*" },
       });