feat(web): add chromeless TerminalView and full-screen terminal route

New `/runs/:id/terminal` route renders a bare TerminalView at viewport
size, opened outside the AppShell so there is no nav, sidebar, or run
detail tabs around it. TerminalView gains a `chromeless` prop that hides
the toolbar and decorative wrapper.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/fabro-web/app/components/terminal-view.tsx

@@ -188,9 +188,11 @@ function StatusPill({
 export default function TerminalView({
   runId,
   leading,
+  chromeless = false,
 }: {
   runId: string;
   leading?: React.ReactNode;
+  chromeless?: boolean;
 }) {
   const { push } = useToast();
   const stateQuery = useRunState(runId);
@@ -349,35 +351,38 @@ export default function TerminalView({
     <section
       className="flex h-full min-h-0 flex-col"
       aria-labelledby={headingId}
+      style={chromeless ? { backgroundColor: TERMINAL_BACKGROUND } : undefined}
     >
       <h2 id={headingId} className="sr-only">Terminal</h2>
-      <div className="mb-2 flex shrink-0 flex-wrap items-center gap-3">
-        {leading}
-        <StatusPill status={status} detail={sandboxDetail} />
-        <div className="ml-auto flex items-center gap-2">
-          <Tooltip label="Reconnect">
-            <button
-              type="button"
-              className={ICON_BUTTON_CLASS}
-              onClick={reconnect}
-              aria-label="Reconnect terminal"
-            >
-              <ArrowPathIcon className="size-4" aria-hidden="true" />
-            </button>
-          </Tooltip>
-          {accessCommandLabel && (
-            <button
-              type="button"
-              className={SECONDARY_BUTTON_CLASS}
-              onClick={() => void copyAccessCommand()}
-              aria-label={`Copy ${accessCommandLabel} command`}
-            >
-              <ClipboardDocumentIcon className="size-4" aria-hidden="true" />
-              {accessCommandLabel}
-            </button>
-          )}
+      {!chromeless && (
+        <div className="mb-2 flex shrink-0 flex-wrap items-center gap-3">
+          {leading}
+          <StatusPill status={status} detail={sandboxDetail} />
+          <div className="ml-auto flex items-center gap-2">
+            <Tooltip label="Reconnect">
+              <button
+                type="button"
+                className={ICON_BUTTON_CLASS}
+                onClick={reconnect}
+                aria-label="Reconnect terminal"
+              >
+                <ArrowPathIcon className="size-4" aria-hidden="true" />
+              </button>
+            </Tooltip>
+            {accessCommandLabel && (
+              <button
+                type="button"
+                className={SECONDARY_BUTTON_CLASS}
+                onClick={() => void copyAccessCommand()}
+                aria-label={`Copy ${accessCommandLabel} command`}
+              >
+                <ClipboardDocumentIcon className="size-4" aria-hidden="true" />
+                {accessCommandLabel}
+              </button>
+            )}
+          </div>
         </div>
-      </div>
+      )}
       {error ? (
         <div className="flex min-h-0 flex-1 items-center justify-center" role="alert">
           <ErrorState
@@ -386,6 +391,8 @@ export default function TerminalView({
             onRetry={error.recoverable ? reconnect : undefined}
           />
         </div>
+      ) : chromeless ? (
+        <div ref={terminalEl} className="h-full min-h-0 p-3" />
       ) : (
         <div
           className="min-h-0 flex-1 overflow-hidden rounded border border-line pb-3"

apps/fabro-web/app/router.tsx

@@ -22,6 +22,7 @@ import * as RunEvents from "./routes/run-events";
 import * as RunArtifacts from "./routes/run-artifacts";
 import * as RunFiles from "./routes/run-files";
 import * as RunSandbox from "./routes/run-sandbox";
+import * as RunTerminal from "./routes/run-terminal";
 import * as RunBilling from "./routes/run-billing";
 import * as Insights from "./routes/insights";
 import * as InsightsEditor from "./routes/insights-editor";
@@ -75,6 +76,7 @@ export const routes: RouteObject[] = [
       indexRoute(RedirectHome),
       route("setup", Setup),
       route("login", AuthLogin),
+      route("runs/:id/terminal", RunTerminal),
       {
         Component: withRouteModule({
           default: AppShellModule,

apps/fabro-web/app/routes/run-terminal.tsx

@@ -0,0 +1,19 @@
+import { useEffect } from "react";
+
+import TerminalView from "../components/terminal-view";
+
+export default function RunTerminal({ params }: { params: { id: string } }) {
+  useEffect(() => {
+    const previous = document.title;
+    document.title = `Terminal · ${params.id} · Fabro`;
+    return () => {
+      document.title = previous;
+    };
+  }, [params.id]);
+
+  return (
+    <div className="h-screen w-screen overflow-hidden">
+      <TerminalView runId={params.id} chromeless />
+    </div>
+  );
+}