Hexclave rename PR5: rename dashboard src/stack -> src/hexclave (Step 19/A)

git mv apps/dashboard/src/stack -> src/hexclave (client.tsx/server.tsx) and
updated the 4 real @/stack/* importers to @/hexclave/*. Left the setup-page
copy-paste snippets teaching the user-project stack/ convention untouched
(that is a separate user-facing/init decision). typecheck + lint green.

apps/dashboard/src/app/(main)/(protected)/(outside-dashboard)/projects/actions.ts

@@ -5,7 +5,7 @@ async function getServerApp() {
   if (isRemoteDevelopmentEnvironmentEnabled()) {
     throw new Error("Team invitation management is not available in the remote development environment dashboard.");
   }
-  return (await import("@/stack/server")).getHexclaveServerApp();
+  return (await import("@/hexclave/server")).getHexclaveServerApp();
 }
 
 export async function revokeInvitation(teamId: string, invitationId: string) {

apps/dashboard/src/app/(main)/integrations/featurebase/sso/page.tsx

@@ -1,4 +1,4 @@
-import { getHexclaveServerApp } from "@/stack/server";
+import { getHexclaveServerApp } from "@/hexclave/server";
 import { getEnvVariable } from "@hexclave/shared/dist/utils/env";
 import { getOrCreateFeaturebaseUser } from "@hexclave/shared/dist/utils/featurebase";
 import { urlString } from "@hexclave/shared/dist/utils/urls";

apps/dashboard/src/app/(main)/integrations/oauth-confirm-page.tsx

@@ -1,4 +1,4 @@
-import { getHexclaveServerApp } from "@/stack/server";
+import { getHexclaveServerApp } from "@/hexclave/server";
 import { getEnvVariable } from "@hexclave/shared/dist/utils/env";
 import { HexclaveAssertionError } from "@hexclave/shared/dist/utils/errors";
 import { redirect } from "next/navigation";

apps/dashboard/src/app/layout-client.tsx

@@ -6,7 +6,7 @@ import { SiteLoadingIndicatorDisplay } from "@/components/site-loading-indicator
 import { Toaster } from "@/components/ui";
 import { VersionAlerter } from "@/components/version-alerter";
 import { getPublicEnvVar } from "@/lib/env";
-import { hexclaveClientApp } from "@/stack/client";
+import { hexclaveClientApp } from "@/hexclave/client";
 import { StackProvider, StackTheme } from "@hexclave/next";
 import { runAsynchronouslyWithAlert } from "@hexclave/shared/dist/utils/promises";
 import React, { useSyncExternalStore } from "react";