FIX: Replace useOidcAuth with useCustomAuth in useUnifiedAuth

##  **Critical Fix for 500 Error:**

### **Issue:**
- useUnifiedAuth.ts was still calling useOidcAuth() which no longer exists
- This was causing the 500 error when dashboard tried to load
- Error: 'useOidcAuth is not defined'

### **Solution:**
-  Replaced useOidcAuth() with useCustomAuth() in unified auth
-  Updated logout logic to use custom Keycloak auth
-  Maintained dual auth support (Directus + Keycloak)

### **Files Changed:**
- composables/useUnifiedAuth.ts - Updated to use custom auth system

##  **Next Step:**
Need to resolve TypeScript import issue for useCustomAuth composable

composables/useUnifiedAuth.ts

@@ -11,27 +11,24 @@ export const useUnifiedAuth = () => {
   // Get both auth systems
   const directusAuth = useDirectusAuth();
   const directusUser = useDirectusUser();
-  const oidc = useOidcAuth();
+  const customAuth = useCustomAuth();
   
   // Create unified user object
   const user = computed<UnifiedUser | null>(() => {
-    // Check OIDC (Keycloak) user first
-    if (oidc.loggedIn?.value && oidc.user?.value) {
-      const oidcUser = oidc.user.value as any; // Type cast for flexibility
+    // Check custom Keycloak auth first
+    if (customAuth.authenticated?.value && customAuth.user?.value) {
+      const keycloakUser = customAuth.user.value as any; // Type cast for flexibility
       
       // Construct name from available fields
-      let name = oidcUser.name || oidcUser.preferred_username || oidcUser.email || 'User';
-      if (!name && (oidcUser.given_name || oidcUser.family_name)) {
-        name = `${oidcUser.given_name || ''} ${oidcUser.family_name || ''}`.trim();
-      }
+      let name = keycloakUser.name || keycloakUser.username || keycloakUser.email || 'User';
       
       return {
-        id: oidcUser.sub || oidcUser.id || 'unknown',
-        email: oidcUser.email || '',
+        id: keycloakUser.id || 'unknown',
+        email: keycloakUser.email || '',
         name: name,
         tier: 'basic', // Could be enhanced with Keycloak attributes
         authSource: 'keycloak',
-        raw: oidcUser
+        raw: keycloakUser
       };
     }
     
@@ -53,8 +50,8 @@ export const useUnifiedAuth = () => {
   // Unified logout function
   const logout = async () => {
     if (user.value?.authSource === 'keycloak') {
-      // OIDC logout
-      await oidc.logout();
+      // Custom Keycloak logout
+      await customAuth.logout();
     } else if (user.value?.authSource === 'directus') {
       // Directus logout
       await directusAuth.logout();