Reorganize biz-state parsers by vendor folder and per-command modules.

Co-authored-by: Cursor <cursoragent@cursor.com>

netx_api/biz_state/parsers/zte/__init__.py

@@ -0,0 +1,31 @@
+"""ZTE ZXROS status parsers — one module per show command."""
+
+from __future__ import annotations
+
+from typing import Any, Callable
+
+from .arp import is_valid_arp_age, normalize_arp
+from .bgp_peer import normalize_bgp_peer
+from .interface_brief import normalize_interface_brief
+from .isis_adjacency import normalize_isis_adjacency
+from .nd6_cache import normalize_nd6_cache
+
+NormalizeFn = Callable[..., list[dict[str, Any]]]
+
+PARSERS: dict[str, NormalizeFn] = {
+    "isis_adjacency": normalize_isis_adjacency,
+    "interface_brief": normalize_interface_brief,
+    "arp": normalize_arp,
+    "nd6_cache": normalize_nd6_cache,
+    "bgp_peer": normalize_bgp_peer,
+}
+
+__all__ = [
+    "PARSERS",
+    "is_valid_arp_age",
+    "normalize_arp",
+    "normalize_bgp_peer",
+    "normalize_interface_brief",
+    "normalize_isis_adjacency",
+    "normalize_nd6_cache",
+]