feat: add managed tool gateway and Nous subscription support

- add managed modal and gateway-backed tool integrations\n- improve CLI setup, auth, and configuration for subscriber flows\n- expand tests and docs for managed tool support

tests/tools/test_terminal_tool_requirements.py

@@ -26,3 +26,30 @@ class TestTerminalRequirements:
         names = {tool["function"]["name"] for tool in tools}
         assert "terminal" in names
         assert {"read_file", "write_file", "patch", "search_files"}.issubset(names)
+
+    def test_terminal_and_execute_code_tools_resolve_for_managed_modal(self, monkeypatch, tmp_path):
+        monkeypatch.setenv("HOME", str(tmp_path))
+        monkeypatch.setenv("USERPROFILE", str(tmp_path))
+        monkeypatch.delenv("MODAL_TOKEN_ID", raising=False)
+        monkeypatch.delenv("MODAL_TOKEN_SECRET", raising=False)
+        monkeypatch.setattr(
+            terminal_tool_module,
+            "_get_env_config",
+            lambda: {"env_type": "modal", "modal_mode": "managed"},
+        )
+        monkeypatch.setattr(
+            terminal_tool_module,
+            "is_managed_tool_gateway_ready",
+            lambda _vendor: True,
+        )
+        monkeypatch.setattr(
+            terminal_tool_module,
+            "ensure_minisweagent_on_path",
+            lambda *_args, **_kwargs: (_ for _ in ()).throw(AssertionError("should not be called")),
+        )
+
+        tools = get_tool_definitions(enabled_toolsets=["terminal", "code_execution"], quiet_mode=True)
+        names = {tool["function"]["name"] for tool in tools}
+
+        assert "terminal" in names
+        assert "execute_code" in names