fix: fjern all GCE metadata token-logikk fra _opax_headers

opax-mcp/server.py

@@ -62,25 +62,11 @@ def _verify_auth(request: Request):
 # OPAX helpers (for opax.vauco.no via IAP)
 # ---------------------------------------------------------------------------
 
-def _opax_identity_token() -> str:
-    """Hent identity token for opax.vauco.no (Cloud Run IAP/IAM)."""
-    try:
-        metadata_url = (
-            "http://metadata.google.internal/computeMetadata/v1/instance"
-            f"/service-accounts/default/identity?audience={OPAX_IAP_CLIENT_ID}&format=full"
-        )
-        resp = httpx.get(metadata_url, headers={"Metadata-Flavor": "Google"}, timeout=5)
-        resp.raise_for_status()
-        token = resp.text.strip()
-        if not token:
-            raise ValueError("Empty token returned from metadata server")
-        return token
-    except Exception as e:
-        logger.error(f"[IAP TOKEN ERROR] {type(e).__name__}: {e}")
-        raise
-
 def _opax_headers() -> dict:
-    return {"Authorization": f"Bearer {_opax_identity_token()}", "Content-Type": "application/json"}
+    return {
+        "X-Internal-Key": os.environ.get("INTERNAL_API_KEY", ""),
+        "Content-Type": "application/json"
+    }", "Content-Type": "application/json"}
 
 
 async def _opax_get(path: str) -> Any: