Add a request to mark hosts and the controller as needing a restart (#1043)

* Add a request to mark hosts and the controller as needing a restart

Not every plugin arrives through PluginInstallRequest. Plugins checked
out into external_plugins or installed by hand on the machine never
flag a restart, so the web UI shows nothing and tooling that acts on
the flag never fires.

HostMarkRestartRequiredRequest and ControllerMarkRestartRequiredRequest
set config.restartRequired, guarded by the existing restart
permissions. They are exposed as "Mark Restart Required" in the control
dropdown of the host and controller pages, hidden once the flag is set,
and as mark-restart-required ctl commands. The mark shows up on the
next system metrics poll.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* Cover the mark-restart-required ctl commands

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>

test/integration/clusterio.js

@@ -550,6 +550,12 @@ describe("Integration of Clusterio", function() {
 			});
 		});
 
+		describe("controller mark-restart-required", function() {
+			it("runs", async function() {
+				await execCtl("controller mark-restart-required");
+			});
+		});
+
 		describe("host list", function() {
 			it("runs", async function() {
 				await execCtl("host list");
@@ -635,6 +641,12 @@ describe("Integration of Clusterio", function() {
 			});
 		});
 
+		describe("host mark-restart-required", function() {
+			it("runs", async function() {
+				await execCtl("host mark-restart-required 4");
+			});
+		});
+
 		describe("host generate-token", function() {
 			it("runs", async function() {
 				await execCtl("host generate-token --id 42");

test/messages/controller.test.js

@@ -29,6 +29,15 @@ describe("messages/controller", function() {
 		controlConnection = new ControlConnection({ version: "2.0.0" }, connection, controller, user, 1);
 	});
 
+	describe("ControllerMarkRestartRequiredRequest", function() {
+		it("runs", async function() {
+			await controlConnection.handleControllerMarkRestartRequiredRequest(
+				new lib.ControllerMarkRestartRequiredRequest()
+			);
+			assert.equal(controller.config.restartRequired, true);
+		});
+	});
+
 	describe("ControllerUpdateRequest", function() {
 		it("runs", async function() {
 			controller.config.set("controller.allow_remote_updates", true);

test/messages/host.test.js

@@ -32,6 +32,13 @@ describe("messages/host", function() {
 		});
 	});
 
+	describe("HostMarkRestartRequiredRequest", function() {
+		it("runs", async function() {
+			await host.handleHostMarkRestartRequiredRequest(new lib.HostMarkRestartRequiredRequest());
+			assert.equal(host.config.restartRequired, true);
+		});
+	});
+
 	describe("HostConfigGetRequest", function() {
 		it("runs", async function() {
 			const config = await host.handleHostConfigGetRequest(new lib.HostConfigGetRequest());