Prefer multi-NE execManagedNe batch and parallelize read MCP tools.

Guide ops to use ne_ids/ume_ne_ids for sweeps, raise exec wall-clock for batches, and mark inventory/list MCP tools read_only so consecutive queries can run in parallel.

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

tests/test_mcp_read_only_parallel.py

@@ -0,0 +1,65 @@
+from __future__ import annotations
+
+from runtime.tools.base import ToolRegistry, ToolSpec
+from runtime.tools.mcp.adapter import _MCP_READ_ONLY_TOOLS, _McpBoundTool, mcp_timeout_for_tool
+
+
+def test_list_query_mcp_tools_marked_read_only() -> None:
+    for name in ("listManagedNe", "queryUmeAlarmsRaw", "listCliTargets", "findTopologyPaths"):
+        assert name in _MCP_READ_ONLY_TOOLS
+        spec = _McpBoundTool(
+            server_id="netx",
+            tool_name=name,
+            description="t",
+            parameters={"type": "object", "properties": {}},
+            command=["echo"],
+        ).to_spec()
+        assert spec.read_only is True
+        assert spec.name == f"mcp__netx__{name}"
+
+
+def test_exec_managed_ne_not_read_only_use_batch_instead() -> None:
+    assert "execManagedNe" not in _MCP_READ_ONLY_TOOLS
+    spec = _McpBoundTool(
+        server_id="netx",
+        tool_name="execManagedNe",
+        description="t",
+        parameters={"type": "object", "properties": {}},
+        command=["echo"],
+    ).to_spec()
+    assert spec.read_only is False
+
+
+def test_exec_managed_ne_timeout_allows_batch_wall_clock() -> None:
+    assert mcp_timeout_for_tool("execManagedNe", 30.0) >= 600.0
+
+
+def test_partition_would_parallelize_consecutive_list_tools() -> None:
+    from runtime.chat.tool_runtime import partition_tool_use_batches
+    from svc.llm.chat_models import LLMToolCall
+
+    reg = ToolRegistry(
+        [
+            ToolSpec(
+                name="mcp__netx__listManagedNe",
+                description="a",
+                parameters={},
+                handler=lambda _a: {"ok": True},
+                read_only=True,
+            ),
+            ToolSpec(
+                name="mcp__netx__queryUmeAlarmsRaw",
+                description="b",
+                parameters={},
+                handler=lambda _a: {"ok": True},
+                read_only=True,
+            ),
+        ]
+    )
+    calls = [
+        LLMToolCall(id="1", name="mcp__netx__listManagedNe", arguments={}),
+        LLMToolCall(id="2", name="mcp__netx__queryUmeAlarmsRaw", arguments={}),
+    ]
+    batches = partition_tool_use_batches(calls, reg)
+    assert len(batches) == 1
+    assert len(batches[0]) == 2