temp: allow all CORS origins for debugging LDAP login issue

Temporarily using allow_origins=['*'] to debug whether CORS is blocking
LDAP login requests from VPN client. This is insecure for production.
TODO: Fix subnet pattern matching in ALLOWED_ORIGINS configuration.

backend/main.py

@@ -121,11 +121,13 @@ def is_origin_allowed(origin: str) -> bool:
     return False
 
 # Add CORS middleware FIRST (before rate limiter)
-# Note: Subnet validation happens during configuration (EXTRA_ALLOWED_ORIGINS)
-# The is_origin_allowed() function is available for route-level validation if needed
+# Temporary: Allow all origins to debug LDAP login issue
+# TODO: Fix subnet matching in ALLOWED_ORIGINS configuration
+# For now, using ["*"] to allow all origins during testing
+log.warning("⚠️  [CORS] Using allow_origins=['*'] - INSECURE FOR PRODUCTION!")
 app.add_middleware(
     CORSMiddleware,
-    allow_origins=ALLOWED_ORIGINS,
+    allow_origins=["*"],  # Temporarily allow all origins for testing
     allow_credentials=True,
     allow_methods=["GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS"],
     allow_headers=["*"],