Refactor desktop app into separate client and proxy apps

apps/yaak-client/routes/workspaces/$workspaceId/index.tsx

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+import { createFileRoute } from '@tanstack/react-router';
+import { Workspace } from '../../../components/Workspace';
+
+type WorkspaceSearchSchema = {
+  environment_id?: string | null;
+  cookie_jar_id?: string | null;
+} & (
+  | {
+      request_id: string;
+    }
+  | {
+      folder_id: string;
+    }
+  // biome-ignore lint/complexity/noBannedTypes: Needed to support empty
+  | {}
+);
+
+export const Route = createFileRoute('/workspaces/$workspaceId/')({
+  component: RouteComponent,
+  validateSearch: (search: Record<string, unknown>): WorkspaceSearchSchema => {
+    const base: Pick<WorkspaceSearchSchema, 'environment_id' | 'cookie_jar_id'> = {
+      environment_id: search.environment_id as string,
+      cookie_jar_id: search.cookie_jar_id as string,
+    };
+
+    const requestId = search.request_id as string | undefined;
+    const folderId = search.folder_id as string | undefined;
+    if (requestId != null) {
+      return { ...base, request_id: requestId };
+    }
+    if (folderId) {
+      return { ...base, folder_id: folderId };
+    }
+    return base;
+  },
+});
+
+function RouteComponent() {
+  return <Workspace />;
+}

apps/yaak-client/routes/workspaces/$workspaceId/requests/$requestId.tsx

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+import { createFileRoute, Navigate, useParams } from '@tanstack/react-router';
+
+// -----------------------------------------------------------------------------------
+// IMPORTANT: This is a deprecated route. Since the active request is optional, it was
+//   moved from a path param to a query parameter. This route does a redirect to the
+//   parent, while preserving the active request.
+
+export const Route = createFileRoute('/workspaces/$workspaceId/requests/$requestId')({
+  component: RouteComponent,
+});
+
+function RouteComponent() {
+  const { workspaceId, requestId } = useParams({
+    from: '/workspaces/$workspaceId/requests/$requestId',
+  });
+  return (
+    <Navigate
+      to="/workspaces/$workspaceId"
+      params={{ workspaceId }}
+      search={(prev) => ({ ...prev, requestId })}
+    />
+  );
+}

apps/yaak-client/routes/workspaces/$workspaceId/settings.tsx

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+import { createFileRoute } from '@tanstack/react-router';
+import type { SettingsTab } from '../../../components/Settings/Settings';
+import Settings from '../../../components/Settings/Settings';
+
+interface SettingsSearchSchema {
+  tab?: SettingsTab;
+}
+
+export const Route = createFileRoute('/workspaces/$workspaceId/settings')({
+  component: RouteComponent,
+  validateSearch: (search: Record<string, unknown>): SettingsSearchSchema => ({
+    tab: (search.tab ?? 'general') as SettingsTab,
+  }),
+});
+
+function RouteComponent() {
+  return <Settings />;
+}

apps/yaak-client/routes/workspaces/index.tsx

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+import { createFileRoute } from '@tanstack/react-router';
+import { RedirectToLatestWorkspace } from '../../components/RedirectToLatestWorkspace';
+
+export const Route = createFileRoute('/workspaces/')({
+  component: RouteComponent,
+});
+
+function RouteComponent() {
+  return <RedirectToLatestWorkspace />;
+}