fix: expose context engine tools with saved toolsets

tests/hermes_cli/test_tools_config.py

@@ -81,6 +81,46 @@ def test_get_platform_tools_uses_default_when_platform_not_configured():
 def test_configurable_toolsets_include_messaging():
     assert any(ts_key == "messaging" for ts_key, _, _ in CONFIGURABLE_TOOLSETS)
 
+
+def test_configurable_toolsets_include_context_engine():
+    assert any(ts_key == "context_engine" for ts_key, _, _ in CONFIGURABLE_TOOLSETS)
+
+
+def test_get_platform_tools_active_context_engine_is_enabled_for_explicit_config():
+    config = {
+        "context": {"engine": "lcm"},
+        "platform_toolsets": {"cli": ["web", "terminal"]},
+    }
+
+    enabled = _get_platform_tools(config, "cli", include_default_mcp_servers=False)
+
+    assert "context_engine" in enabled
+    assert "web" in enabled
+    assert "terminal" in enabled
+
+
+def test_get_platform_tools_context_engine_not_added_for_default_compressor():
+    config = {
+        "context": {"engine": "compressor"},
+        "platform_toolsets": {"cli": ["web", "terminal"]},
+    }
+
+    enabled = _get_platform_tools(config, "cli", include_default_mcp_servers=False)
+
+    assert "context_engine" not in enabled
+
+
+def test_get_platform_tools_context_engine_respects_explicit_empty_selection():
+    config = {
+        "context": {"engine": "lcm"},
+        "platform_toolsets": {"cli": []},
+    }
+
+    enabled = _get_platform_tools(config, "cli", include_default_mcp_servers=False)
+
+    assert "context_engine" not in enabled
+
+
 def test_get_platform_tools_default_telegram_includes_messaging():
     enabled = _get_platform_tools({}, "telegram")