feat(cloud): complete Workspace settings navigation

src/langbot/pkg/api/http/controller/groups/workspaces.py

@@ -106,12 +106,21 @@ class WorkspacesRouterGroup(group.RouterGroup):
             if account is None:
                 return self.http_status(401, 'invalid_authentication', 'Account not found')
             workspace = await self.ap.workspace_service.get_workspace(request_context.workspace_uuid)
+            plan_name: str | None = None
+            resolver = getattr(self.ap, 'entitlement_resolver', None)
+            if workspace.source == WorkspaceSource.CLOUD_PROJECTION.value and resolver is not None:
+                entitlement = await resolver.resolve(
+                    workspace.uuid,
+                    minimum_revision=request_context.entitlement_revision,
+                )
+                plan_name = entitlement.plan_name
             return self.success(
                 data={
                     'workspace': _workspace_payload(workspace),
                     'membership': _membership_payload(membership, email=account.user),
                     'permissions': sorted(request_context.workspace.permissions),
                     'placement_generation': request_context.placement_generation,
+                    'plan_name': plan_name,
                 }
             )
 

src/langbot/pkg/cloud/entitlements.py

@@ -18,10 +18,11 @@ class EntitlementUnavailableError(RuntimeError):
 
 
 class EntitlementSnapshot(pydantic.BaseModel):
-    """Plan-agnostic capability projection consumed by open-source Core.
+    """Capability projection consumed by open-source Core.
 
-    Product and billing names deliberately do not appear here.  The closed
-    Control Plane maps subscriptions to these generic features and limits.
+    Admission and quota decisions use normalized features/limits rather than
+    product plan names. ``plan_name`` is signed display metadata for Cloud UI
+    only and must never drive authorization or quota enforcement.
     """
 
     model_config = pydantic.ConfigDict(frozen=True, extra='forbid')
@@ -34,6 +35,9 @@ class EntitlementSnapshot(pydantic.BaseModel):
     expires_at: int = pydantic.Field(gt=0)
     features: dict[str, bool] = pydantic.Field(default_factory=dict)
     limits: dict[str, int] = pydantic.Field(default_factory=dict)
+    # Signed display metadata for Cloud UI only. Admission and quota decisions
+    # must continue to use generic ``features`` and ``limits`` exclusively.
+    plan_name: str | None = pydantic.Field(default=None, min_length=1, max_length=128)
 
     @pydantic.field_validator('features')
     @classmethod

src/langbot/pkg/workspace/collaboration.py

@@ -281,6 +281,17 @@ class WorkspaceCollaborationService:
         *,
         session: AsyncSession | None = None,
     ) -> list[WorkspaceMemberView]:
+        if session is None:
+            current_session = getattr(self.ap.persistence_mgr, 'current_session', lambda: None)()
+            tenant_uow: typing.Any = getattr(self.ap.persistence_mgr, 'tenant_uow', None)
+            if current_session is None and callable(tenant_uow):
+                async with tenant_uow(workspace_uuid) as workspace_uow:
+                    return await self.list_members(
+                        workspace_uuid,
+                        actor,
+                        session=workspace_uow.session,
+                    )
+
         async def operation(active_session: AsyncSession) -> list[WorkspaceMemberView]:
             await self._load_actor(active_session, workspace_uuid, actor)
             statement = (

tests/integration/api/test_workspaces.py

@@ -468,6 +468,22 @@ async def test_cloud_projection_is_selected_explicitly_and_directory_writes_use_
         cloud_workspace_uuid,
     }
 
+    class PlanResolver:
+        async def resolve(self, workspace_uuid: str, *, minimum_revision: int = 0):
+            from langbot.pkg.cloud.entitlements import EntitlementSnapshot
+
+            assert workspace_uuid == cloud_workspace_uuid
+            return EntitlementSnapshot(
+                instance_uuid='instance-workspace-api',
+                workspace_uuid=workspace_uuid,
+                entitlement_revision=max(12, minimum_revision),
+                status='active',
+                not_before=1,
+                expires_at=4102444800,
+                plan_name='free',
+            )
+
+    application.entitlement_resolver = PlanResolver()
     current_response = await client.get(
         '/api/v1/workspaces/current',
         headers=_auth(owner_token, cloud_workspace_uuid),
@@ -477,6 +493,7 @@ async def test_cloud_projection_is_selected_explicitly_and_directory_writes_use_
     assert current['workspace']['uuid'] == cloud_workspace_uuid
     assert current['workspace']['source'] == 'cloud_projection'
     assert current['placement_generation'] == 12
+    assert current['plan_name'] == 'free'
 
     create_workspace = await client.post(
         '/api/v1/workspaces',

tests/unit_tests/workspace/test_workspace_collaboration.py

@@ -2,6 +2,7 @@ from __future__ import annotations
 
 import asyncio
 import uuid
+from contextlib import asynccontextmanager
 from types import SimpleNamespace
 
 import pytest
@@ -209,6 +210,36 @@ async def test_workspace_selector_requires_membership(collaboration_context):
         await service.resolve_account_workspace(outsider.uuid, workspace.uuid)
 
 
+async def test_cloud_member_listing_opens_workspace_uow_when_request_scope_has_closed(
+    collaboration_context,
+):
+    service, _, session_factory, _, workspace, owner_membership = collaboration_context
+    entered_workspaces: list[str] = []
+
+    @asynccontextmanager
+    async def tenant_uow(workspace_uuid: str):
+        entered_workspaces.append(workspace_uuid)
+        async with session_factory.begin() as session:
+            yield SimpleNamespace(session=session)
+
+    service.ap.persistence_mgr = SimpleNamespace(
+        mode=SimpleNamespace(value='cloud_runtime'),
+        current_session=lambda: None,
+        tenant_uow=tenant_uow,
+        require_current_session=lambda: (_ for _ in ()).throw(
+            AssertionError('list_members must open a Workspace UoW')
+        ),
+        get_db_engine=lambda: session_factory.kw['bind'],
+    )
+
+    members = await service.list_members(workspace.uuid, owner_membership)
+
+    assert entered_workspaces == [workspace.uuid]
+    assert [(member.email, member.membership.role) for member in members] == [
+        ('owner@example.com', 'owner')
+    ]
+
+
 async def test_cloud_directory_requires_explicit_selector_and_rejects_local_mutation(
     collaboration_context,
 ):

web/src/app/home/components/home-sidebar/HomeSidebar.tsx

@@ -36,6 +36,7 @@ import {
   Server,
   Puzzle,
   RefreshCcw,
+  UsersRound,
 } from 'lucide-react';
 import { useTheme } from '@/components/providers/theme-provider';
 
@@ -61,6 +62,9 @@ import { Avatar, AvatarFallback } from '@/components/ui/avatar';
 import { LanguageSelector } from '@/components/ui/language-selector';
 import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
+import WorkspaceSwitcher, {
+  OPEN_WORKSPACE_SETTINGS_EVENT,
+} from '@/app/home/components/workspace-settings/WorkspaceSwitcher';
 import NewVersionDialog from '@/app/home/components/new-version-dialog/NewVersionDialog';
 import SettingsDialog, {
   SettingsSection,
@@ -1676,6 +1680,19 @@ export default function HomeSidebar({
     });
   }
 
+  useEffect(() => {
+    const openWorkspaceSettings = () => openSettings('workspace');
+    window.addEventListener(
+      OPEN_WORKSPACE_SETTINGS_EVENT,
+      openWorkspaceSettings,
+    );
+    return () =>
+      window.removeEventListener(
+        OPEN_WORKSPACE_SETTINGS_EVENT,
+        openWorkspaceSettings,
+      );
+  });
+
   function handleSettingsSectionChange(section: SettingsSection) {
     setSettingsSection(section);
     const params = new URLSearchParams(searchParams.toString());
@@ -1953,6 +1970,11 @@ export default function HomeSidebar({
 
         {/* Footer */}
         <SidebarFooter>
+          {currentWorkspace?.workspace.source === 'cloud_projection' && (
+            <div className="px-2 group-data-[collapsible=icon]:px-0">
+              <WorkspaceSwitcher className="w-full group-data-[collapsible=icon]:min-w-0 group-data-[collapsible=icon]:px-2" />
+            </div>
+          )}
           {/* Models entry */}
           <SidebarMenu>
             <SidebarMenuItem>
@@ -2068,6 +2090,15 @@ export default function HomeSidebar({
                       <Settings />
                       {t('account.settings')}
                     </DropdownMenuItem>
+                    <DropdownMenuItem
+                      onClick={() => {
+                        setUserMenuOpen(false);
+                        openSettings('workspace');
+                      }}
+                    >
+                      <UsersRound />
+                      {t('workspace.settings')}
+                    </DropdownMenuItem>
                     <DropdownMenuItem
                       onClick={() => {
                         setUserMenuOpen(false);

web/src/app/home/components/workspace-settings/WorkspaceSwitcher.tsx

@@ -1,20 +1,35 @@
-import { Building2 } from 'lucide-react';
+import {
+  Building2,
+  Check,
+  ExternalLink,
+  Settings,
+  Sparkles,
+} from 'lucide-react';
 import { useTranslation } from 'react-i18next';
 
 import {
   switchWorkspaceAndReload,
+  systemInfo,
   useCurrentWorkspace,
   useWorkspaceBootstrap,
 } from '@/app/infra/http';
+import { Button } from '@/components/ui/button';
 import {
-  Select,
-  SelectContent,
-  SelectItem,
-  SelectTrigger,
-  SelectValue,
-} from '@/components/ui/select';
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuLabel,
+  DropdownMenuSeparator,
+  DropdownMenuTrigger,
+} from '@/components/ui/dropdown-menu';
 import { cn } from '@/lib/utils';
 
+export const OPEN_WORKSPACE_SETTINGS_EVENT = 'langbot:open-workspace-settings';
+
+export function requestWorkspaceSettings(): void {
+  window.dispatchEvent(new Event(OPEN_WORKSPACE_SETTINGS_EVENT));
+}
+
 export default function WorkspaceSwitcher({
   className,
 }: {
@@ -23,34 +38,78 @@ export default function WorkspaceSwitcher({
   const { t } = useTranslation();
   const currentWorkspace = useCurrentWorkspace();
   const workspaces = useWorkspaceBootstrap();
+  const isCloud = currentWorkspace?.workspace.source === 'cloud_projection';
 
-  if (!currentWorkspace || workspaces.length <= 1) return null;
+  if (!currentWorkspace || (!isCloud && workspaces.length <= 1)) return null;
+
+  const cloudPortalUrl = `${systemInfo.cloud_service_url.replace(/\/$/, '')}/cloud?workspace=${encodeURIComponent(currentWorkspace.workspace.uuid)}`;
 
   return (
-    <Select
-      value={currentWorkspace.workspace.uuid}
-      onValueChange={switchWorkspaceAndReload}
-    >
-      <SelectTrigger
-        size="sm"
-        className={cn('min-w-44 max-w-64', className)}
-        aria-label={t('workspace.switchWorkspace')}
-      >
-        <Building2 className="size-4 shrink-0" />
-        <SelectValue />
-      </SelectTrigger>
-      <SelectContent align="end">
-        {workspaces.map((entry) => (
-          <SelectItem key={entry.workspace.uuid} value={entry.workspace.uuid}>
-            <span className="flex min-w-0 items-center gap-2">
-              <span className="truncate">{entry.workspace.name}</span>
+    <DropdownMenu>
+      <DropdownMenuTrigger asChild>
+        <Button
+          variant="outline"
+          size="sm"
+          className={cn('min-w-44 max-w-64 justify-start', className)}
+          aria-label={t('workspace.switchWorkspace')}
+        >
+          <Building2 className="size-4 shrink-0" />
+          <span className="truncate">{currentWorkspace.workspace.name}</span>
+        </Button>
+      </DropdownMenuTrigger>
+      <DropdownMenuContent align="end" className="min-w-64">
+        <DropdownMenuLabel>{t('workspace.switchWorkspace')}</DropdownMenuLabel>
+        {workspaces.map((entry) => {
+          const selected =
+            entry.workspace.uuid === currentWorkspace.workspace.uuid;
+          return (
+            <DropdownMenuItem
+              key={entry.workspace.uuid}
+              onClick={() => {
+                if (!selected)
+                  void switchWorkspaceAndReload(entry.workspace.uuid);
+              }}
+            >
+              <Building2 className="size-4" />
+              <span className="min-w-0 flex-1 truncate">
+                {entry.workspace.name}
+              </span>
               <span className="text-xs text-muted-foreground">
                 {t(`workspace.roles.${entry.membership.role}`)}
               </span>
-            </span>
-          </SelectItem>
-        ))}
-      </SelectContent>
-    </Select>
+              {selected && <Check className="size-4" />}
+            </DropdownMenuItem>
+          );
+        })}
+        <DropdownMenuSeparator />
+        {isCloud && (
+          <>
+            <DropdownMenuLabel className="flex items-center justify-between gap-3 font-normal">
+              <span className="text-muted-foreground">
+                {t('workspace.currentPlan')}
+              </span>
+              <span className="font-medium text-foreground">
+                {currentWorkspace.plan_name || t('workspace.planUnavailable')}
+              </span>
+            </DropdownMenuLabel>
+            <DropdownMenuItem asChild>
+              <a
+                href={cloudPortalUrl}
+                target="_blank"
+                rel="noopener noreferrer"
+              >
+                <Sparkles className="size-4" />
+                {t('workspace.upgradePlan')}
+                <ExternalLink className="ml-auto size-3.5" />
+              </a>
+            </DropdownMenuItem>
+          </>
+        )}
+        <DropdownMenuItem onClick={requestWorkspaceSettings}>
+          <Settings className="size-4" />
+          {t('workspace.settings')}
+        </DropdownMenuItem>
+      </DropdownMenuContent>
+    </DropdownMenu>
   );
 }

web/src/app/infra/entities/workspace.ts

@@ -31,6 +31,8 @@ export interface CurrentWorkspace {
   membership: WorkspaceMembership;
   permissions: string[];
   placement_generation: number;
+  /** Signed Cloud display metadata; never used for client-side authorization. */
+  plan_name?: string | null;
 }
 
 /** Account-scoped Workspace entry returned before a Workspace is selected. */

web/src/app/login/page.tsx

@@ -19,7 +19,7 @@ import {
   FormLabel,
   FormMessage,
 } from '@/components/ui/form';
-import { useEffect, useState } from 'react';
+import { useCallback, useEffect, useRef, useState } from 'react';
 import {
   beginAuthenticatedSession,
   bootstrapWorkspaceSession,
@@ -66,6 +66,7 @@ export default function Login() {
   const [loading, setLoading] = useState(true);
   const [loadError, setLoadError] = useState<string | null>(null);
   const [retrying, setRetrying] = useState(false);
+  const autoSpaceLoginStarted = useRef(false);
 
   const form = useForm<z.infer<ReturnType<typeof formSchema>>>({
     resolver: zodResolver(formSchema(t)),
@@ -196,7 +197,7 @@ export default function Login() {
       });
   }
 
-  const handleSpaceLoginClick = async () => {
+  const handleSpaceLoginClick = useCallback(async () => {
     setSpaceLoading(true);
     try {
       const currentOrigin = window.location.origin;
@@ -207,7 +208,20 @@ export default function Login() {
       toast.error(t('common.spaceLoginFailed'));
       setSpaceLoading(false);
     }
-  };
+  }, [t]);
+
+  useEffect(() => {
+    if (
+      loading ||
+      !showSpaceLogin ||
+      autoSpaceLoginStarted.current ||
+      new URLSearchParams(window.location.search).get('auto') !== 'space'
+    ) {
+      return;
+    }
+    autoSpaceLoginStarted.current = true;
+    void handleSpaceLoginClick();
+  }, [handleSpaceLoginClick, loading, showSpaceLogin]);
 
   if (loading) {
     return (

web/src/i18n/locales/en-US.ts

@@ -1293,6 +1293,10 @@ const enUS = {
     selectionLoadFailed:
       'Your Workspaces could not be loaded. Please try again.',
     switchWorkspace: 'Switch Workspace',
+    settings: 'Workspace Settings',
+    currentPlan: 'Current plan',
+    planUnavailable: 'Unavailable',
+    upgradePlan: 'Change or upgrade plan',
     ossSingletonDescription:
       'This self-hosted instance has one Workspace and can include multiple users.',
     cloudManagedDescription:

web/src/i18n/locales/zh-Hans.ts

@@ -1227,6 +1227,10 @@ const zhHans = {
     selectDescription: '选择你要进入的 LangBot 工作区。',
     selectionLoadFailed: '无法加载你的工作区，请重试。',
     switchWorkspace: '切换工作区',
+    settings: '工作区设置',
+    currentPlan: '当前计划',
+    planUnavailable: '暂不可用',
+    upgradePlan: '切换或升级计划',
     ossSingletonDescription:
       '当前自托管实例只有一个工作区，但可以包含多个用户。',
     cloudManagedDescription: