fix: name the build's command when signed out, report ace open and directory joins, rejoin a served directory, and drop a deleted message's toolbar

.lane/memory/apps/app/src/app.tsx/01M4YT6XB7NQ89E6F4P375REE7-all-projects-and-project-vie.md

@@ -4,9 +4,9 @@ anchor: function App
 created: 2026-10-15T03:38:04Z
 norm: '1'
 sig: 063d0f00fea02511
-body_hash: cffc6c2ce7bd7e6d
-raw_hash: 14cee7a4562529f6
-vouched: 2026-10-23T12:32:53Z
+body_hash: 0c4a35fb396f0dd1
+raw_hash: 95e503cbbd9a6cab
+vouched: 2026-10-23T12:46:13Z
 lines: 235-824
 ---
 

.lane/memory/apps/app/src/app.tsx/01M5JMVG9G87F31FGVV571Y6BJ-the-project-list-is-built-on.md

@@ -4,9 +4,9 @@ anchor: function App
 created: 2026-10-22T20:29:16Z
 norm: '1'
 sig: 063d0f00fea02511
-body_hash: cffc6c2ce7bd7e6d
-raw_hash: 14cee7a4562529f6
-vouched: 2026-10-23T12:32:53Z
+body_hash: 0c4a35fb396f0dd1
+raw_hash: 95e503cbbd9a6cab
+vouched: 2026-10-23T12:46:13Z
 lines: 330-1237
 ---
 

.lane/memory/apps/host/src/cli.ts/01M4YY5SXJFQK8VXT78X1E0KAE-every-command-but-serve-must.md

@@ -4,9 +4,9 @@ anchor: function main
 created: 2026-10-15T04:47:23Z
 norm: '1'
 sig: 7d5d3f63a3bddde4
-body_hash: cb848608fe3526ea
-raw_hash: 97a687d2dea1a6e3
-vouched: 2026-10-23T12:25:08Z
+body_hash: 5b0f98c8033bcdda
+raw_hash: ec46efe56f9ba131
+vouched: 2026-10-23T12:46:13Z
 lines: 253-482
 ---
 

.lane/memory/apps/host/src/cli.ts/01M5J0BZWP8SCBK522YT2HMZDZ-ace-info-prints-agent-access.md

@@ -4,9 +4,9 @@ anchor: function main
 created: 2026-10-22T14:31:16Z
 norm: '1'
 sig: 7d5d3f63a3bddde4
-body_hash: cb848608fe3526ea
-raw_hash: 97a687d2dea1a6e3
-vouched: 2026-10-23T12:25:08Z
+body_hash: 5b0f98c8033bcdda
+raw_hash: ec46efe56f9ba131
+vouched: 2026-10-23T12:46:13Z
 lines: 332-614
 ---
 

.lane/memory/apps/host/src/gateway.ts/01M5D4BXMERGZ1EZ3EYAFM3YC4-worker-requests-worker-never.md

@@ -4,9 +4,9 @@ anchor: '@file'
 created: 2026-10-20T17:04:56Z
 norm: '1'
 sig: 1acdc0f6a0895ac5
-body_hash: bda882f4e56d7c30
-raw_hash: 291f5c1b799528ff
-vouched: 2026-10-23T12:27:33Z
+body_hash: 05e5d9affea62a1b
+raw_hash: b285921bed152d03
+vouched: 2026-10-23T12:46:13Z
 lines: 1-1153
 ---
 

.lane/memory/apps/host/src/gateway.ts/01M5HYM54QCSF4ESXJSWZK588G-every-project-op-that-change.md

@@ -4,9 +4,9 @@ anchor: '@file'
 created: 2026-10-22T14:00:47Z
 norm: '1'
 sig: 1acdc0f6a0895ac5
-body_hash: bda882f4e56d7c30
-raw_hash: 291f5c1b799528ff
-vouched: 2026-10-23T12:27:33Z
+body_hash: 05e5d9affea62a1b
+raw_hash: b285921bed152d03
+vouched: 2026-10-23T12:46:13Z
 lines: 1-1309
 ---
 

.lane/memory/apps/host/src/helper.ts/01M4V5N7FNEDME70ADSQF5H00A-helpers-must-stay-first-on-t.md

@@ -4,9 +4,9 @@ anchor: '@file'
 created: 2026-10-13T17:41:10Z
 norm: '1'
 sig: 4b03c8eb05d682d4
-body_hash: d3b539175eba5e12
-raw_hash: 6e008c8c2632d2b4
-vouched: 2026-10-22T21:10:47Z
+body_hash: f52ecd279152f67f
+raw_hash: a18302a5ba37aa01
+vouched: 2026-10-23T12:46:13Z
 lines: 1-39
 ---
 

.lane/memory/apps/host/src/helper.ts/01M5MCR68GHN6F4RC5G1TQZMHG-ace-helper-s-config-command.md

@@ -0,0 +1,12 @@
+---
+id: 01M5MCR68GHN6F4RC5G1TQZMHG
+anchor: '@file'
+created: 2026-10-23T12:46:08Z
+norm: '1'
+sig: 4b03c8eb05d682d4
+body_hash: f52ecd279152f67f
+raw_hash: a18302a5ba37aa01
+lines: 1-52
+---
+
+Ace Helper's config.command must match the link apps/desktop/src/index.ts installs: ace for stable, ace-<channel> otherwise

apps/app/src/app.tsx

@@ -145,11 +145,11 @@ function Disconnected() {
 	const answers = useAnswers();
 	const refusal = useRefused();
 	if (desktop) return <>Disconnected from Ace Helper. Open Settings → This Mac to start it.</>;
-	if (typeof refusal === "object") return <>{refusal.other}</>;
-	if (refusal === "signed-out") {
+	if (refusal && "other" in refusal) return <>{refusal.other}</>;
+	if (refusal) {
 		return (
 			<>
-				This browser isn't signed in to your host. Run <code>ace open</code>{" "}
+				This browser isn't signed in to your host. Run <code>{refusal.command} open</code>{" "}
 				on that Mac, or open its sign-in link again.
 			</>
 		);
@@ -1066,6 +1066,7 @@ export function App() {
 								)}
 							{card && (
 								<DirectoryCard
+									serving={directory.serving}
 									offered={directory.offered}
 									onDismiss={() => setDismissed(true)}
 									onChange={() => setSettings("team")}

apps/app/src/host.ts

@@ -36,12 +36,12 @@ window.addEventListener("hashchange", () => {
  * with a new token, or because it is a teammate's host (403, whose text names its owner). A
  * browser hides a WebSocket's status, so this asks over HTTP with what the socket sends.
  */
-export async function refused(): Promise<"signed-out" | { other: string } | undefined> {
+export async function refused(): Promise<{ command: string } | { other: string } | undefined> {
 	const response = await fetch(gateway!.replace(/^ws/, "http"), {
 		cache: "no-store",
 		...(token ? { headers: { authorization: `Bearer ${token}` } } : {}),
 	}).catch(() => undefined);
-	if (response?.status === 401) return "signed-out";
+	if (response?.status === 401) return { command: await response.text() };
 	if (response?.status === 403) return { other: await response.text() };
 }
 

apps/app/src/onboarding.tsx

@@ -243,11 +243,12 @@ export function Welcome({ github, onClose }: { github?: string; onClose: () => v
 }
 
 /**
- * Sidebar footer while this host has no directory: join the one a teammate's host names, or
- * create one when nobody has.
+ * Sidebar footer while this host has no directory: rejoin the one it still serves, join the one a
+ * teammate's host names, or create one when nobody has.
  */
 export function DirectoryCard(
-	{ offered, onDismiss, onChange }: {
+	{ serving, offered, onDismiss, onChange }: {
+		serving: boolean;
 		offered?: { url: string; host: string };
 		onDismiss: () => void;
 		onChange: () => void;
@@ -256,11 +257,13 @@ export function DirectoryCard(
 	const [joining, setJoining] = useState(false);
 	const [error, setError] = useState("");
 
-	async function join(url: string) {
+	async function join(url?: string) {
 		setJoining(true);
 		setError("");
 		try {
-			await host.request({ op: "directory-set", url });
+			await host.request(
+				url ? { op: "directory-set", url } : { op: "directory-serve", serve: true },
+			);
 		} catch (error) {
 			setError((error as Error).message);
 		} finally {
@@ -282,21 +285,23 @@ export function DirectoryCard(
 					<IconX className="size-3.5" aria-hidden />
 				</button>
 			</div>
-			{offered
+			{/* `ace directory off` leaves the directory this Mac still serves; Join serves it again. */}
+			{serving || offered
 				? (
 					<>
 						<p className="text-xs leading-5 text-muted-foreground">
-							{offered.host}{" "}
-							serves your team's directory. This Mac isn't in it, so its channels aren't listed
-							while it's offline.
+							{serving
+								? "This Mac serves your team's directory but isn't in it"
+								: `${offered?.host} serves your team's directory. This Mac isn't in it`}, so its
+							channels aren't listed while it's offline.
 						</p>
 						{error && <p role="alert" className="text-xs text-destructive">{error}</p>}
 						<div className="flex gap-2">
 							<Button
 								size="sm"
 								className="flex-1"
 								disabled={joining}
-								onClick={() => void join(offered.url)}
+								onClick={() => void join(serving ? undefined : offered?.url)}
 							>
 								{joining ? "Joining…" : "Join"}
 							</Button>

apps/host/src/cli.ts

@@ -558,7 +558,7 @@ async function main() {
 			}
 			const { directory: status, tailscale } = await local<Diagnostics>({ op: "diagnostics" });
 			if (!status.url) return console.log("No directory");
-			console.log(status.url);
+			console.log(url ? `Joined ${status.url}` : status.url);
 			if (tailscale.loopback) {
 				return console.log(dim("This host runs with --loopback, so it doesn't sync it."));
 			}
@@ -594,7 +594,7 @@ async function main() {
 			url.hash = new URLSearchParams({ token: token() }).toString();
 			const result = Bun.spawnSync([process.platform === "darwin" ? "open" : "xdg-open", url.href]);
 			if (!result.success) throw new Error("Could not open Ace in your browser");
-			return;
+			return console.log(`Opened ${url.origin} in your browser, signed in to this host.`);
 		}
 		case "serve":
 			return serve(Number(flags.port || config.port), !!flags.loopback, flags.demo);

apps/host/src/gateway.ts

@@ -1053,7 +1053,8 @@ function owner(port: number): Server<Client> {
 				});
 			}
 			if (url.pathname === "/ws") {
-				if (!access.authorizes(request)) return new Response("Unauthorized", { status: 401 });
+				// The body names this build's command, so a signed-out page can say what to run.
+				if (!access.authorizes(request)) return new Response(config.command, { status: 401 });
 				const protocols = request.headers.get("sec-websocket-protocol")?.split(",").map((value) =>
 					value.trim()
 				);

apps/host/src/helper.ts

@@ -24,9 +24,12 @@ config.version = ACE_VERSION;
 config.app = join(dirname(process.execPath), "..", "Resources", "app", "web");
 config.services = join(dirname(process.execPath), "..", "Resources", "services");
 config.worker = [process.execPath, "--worker"];
+// The app links its command as `ace` for stable and `ace-<channel>` otherwise, as its identifier ends.
+config.command = cli
+	? basename(process.argv0)
+	: ACE_IDENTIFIER.replace("dev.ace.desktop", "ace").replace(".", "-");
 
 if (cli) {
-	config.command = basename(process.argv0);
 	await import("./cli");
 } else if (worker) {
 	// A compiled executable dispatches its worker entry itself, rather than running a TS file.

packages/ui/src/components/timeline/timeline.tsx

@@ -734,19 +734,26 @@ function GroupView(props: GroupProps) {
 			onRowEnter(node?.dataset.messageId || uid);
 		})
 		: undefined;
-	let toolbar = (id: string, fit: number, sticky?: boolean) =>
-		active === id && (
+	let toolbar = (id: string, fit: number, sticky?: boolean) => {
+		if (active !== id) return false;
+		let actions = typeof props.actions === "function" ? props.actions(id) : props.actions;
+		let canEdit = own && !!editable?.has(id);
+		// A message with nothing left to act on, such as a deleted one, gets no toolbar.
+		let shared = (["react", "copy", "permalink"] as const).every((key) => actions?.[key] === false);
+		if (shared && !canEdit && !(own && actions?.delete !== false)) return false;
+		return (
 			<FloatingToolbar
 				align={mine ? "left" : "right"}
-				actions={typeof props.actions === "function" ? props.actions(id) : props.actions}
+				actions={actions}
 				mine={own}
-				canEdit={own && !!editable?.has(id)}
+				canEdit={canEdit}
 				sticky={sticky}
 				width={fit}
 				onAction={(action) => onToolbarAction?.(id, action)}
 				onOpenChange={onOpenChange}
 			/>
 		);
+	};
 
 	return (
 		<div