fix: revert Homarr to credentials auth only

SSO is handled by Authentik outpost on racknerd Caddy at
auth.researchstack.info. Homarr sits behind this outpost and
only sees already-authenticated traffic from the public URL.
Direct access via tailnet port 7575 uses credentials.

scripts/configure_homarr_oidc.py

@@ -1,44 +1,20 @@
 #!/usr/bin/env python3
-"""Configure Homarr OIDC by inserting into the database."""
+"""Restore Homarr auth to credentials-only. SSO is handled at the Caddy/Authentik outpost level."""
 import sqlite3, json
 
 conn = sqlite3.connect("/home/allaun/.local/share/containers/storage/volumes/homarr-data/_data/db/db.sqlite")
 
 auth_config = {
     "json": {
-        "oidcProviders": [
-            {
-                "displayName": "Authentik",
-                "clientId": "homarr",
-                "clientSecret": "insecure-homarr-secret-change-me",
-                "issuer": "http://100.92.88.64:9090/application/o/homarr/",
-                "discoveryUrl": "http://100.92.88.64:9090/application/o/homarr/.well-known/openid-configuration",
-                "callbackUrl": "http://homarr.neon.lan:9092/api/auth/callback/authentik",
-                "enabled": True,
-            }
-        ],
-        "providers": ["credentials", "oidc"],
+        "providers": ["credentials"],
     }
 }
 
-try:
-    conn.execute(
-        "INSERT INTO serverSetting (setting_key, value) VALUES (?, ?)",
-        ("authentication", json.dumps(auth_config)),
-    )
-    conn.commit()
-    print(f"Inserted OIDC config: {json.dumps(auth_config, indent=2)}")
-except sqlite3.IntegrityError:
 conn.execute(
     "UPDATE serverSetting SET value = ? WHERE setting_key = ?",
     (json.dumps(auth_config), "authentication"),
 )
 conn.commit()
-    print("Updated existing authentication config")
-
-# Verify
-row = conn.execute("SELECT value FROM serverSetting WHERE setting_key = 'authentication'").fetchone()
-if row:
-    print(f"\nVerified: {row[0][:200]}")
+print("Restored credentials-only auth. SSO is handled by Caddy/Authentik outpost.")
 
 conn.close()