feat(tenancy): add Workspace multi-tenant foundation (#2353)

* Document multi-tenant workspace architecture

* Add OSS and commercial workspace boundaries

* docs: redesign multi-tenant workspace architecture

* feat(tenancy): implement workspace isolation

* docs(tenancy): record verification evidence

* docs(tenancy): revise single-instance SaaS topology

* docs(tenancy): refine architecture options

* docs: finalize cloud v2 multi-tenant decisions

* feat(tenancy): establish cloud isolation foundations

* feat(tenancy): harden shared cloud runtime boundaries

* docs(tenancy): record final isolation verification

* fix(tenancy): close isolation and permission gaps

* docs(tenancy): record final isolation verification

* feat(tenancy): connect cloud workspace control plane

* fix(build): install git for pinned SDK

* docs(cloud): update control plane verification

* chore: update multi-tenant SDK pin

* fix(cloud): skip legacy model sync during startup

* test(cloud): preserve minimal model manager fixtures

* fix(cloud): preserve authenticated account context

* fix(cloud): reuse authenticated account for user info

* feat(cloud): complete Workspace settings navigation

* test(web): cover Workspace dropdown menu

* feat(web): place workspace controls in sidebar

* refactor(web): streamline workspace controls

* style(web): format workspace layout test

* fix(cloud): surface runtime and workspace plan status

* fix(plugin): keep runtime identity stable across restarts

* fix(ui): widen and center workspace switcher

* fix(ui): hide roles from workspace switcher

* fix(ui): align workspace switcher with sidebar entries

* feat(workspace): add in-product collaboration and direct Cloud launch

* style: format collaboration changes

* fix(workspace): bind collaboration APIs to tenant UoW

* fix(cloud): preserve Core-owned collaboration state

* test(cloud): require Space identity for invite registration

* feat(cloud): complete secure invitation experience

* style(web): format invitation flows

* fix(cloud): recover box runtime without unscoped skill reload

* feat(oss): enforce invitation account and owner billing flows

* style: format OSS account service

* test(oss): cover invitation logout handoff

* fix(oss): resolve workspace owner in scoped session

* feat(cloud): harden multi-tenant runtime resources

* fix(cloud): bound runtime restart storms

* fix(cloud): eliminate periodic runtime CPU spikes

* fix(cloud): enforce instance capacity ceilings

* fix(cloud): scope public login capability discovery

* fix(cloud): bound tenant maintenance and monitoring work

* fix(runtime): bound tenant resource amplification

* fix(deps): pin green multi-tenant plugin SDK

* fix(cloud): handle unavailable skill capability

* fix(security): require authentication for image file endpoint (H-2)

- Changed /api/v1/files/image from AuthType.NONE to USER_TOKEN_OR_API_KEY
- Added Permission.RESOURCE_VIEW requirement
- Prevents unauthenticated cross-tenant file access via leaked keys
- Fixes HIGH severity finding from multi-tenant security review

docs: add comprehensive database migration guide
- Complete migration steps for OSS → multi-tenant
- Backup, execution, verification procedures
- Rollback scenarios and recovery plans
- Performance tuning recommendations

* test: add comprehensive cross-tenant isolation tests

Added 7 critical test scenarios for multi-tenant boundaries:
- Cross-tenant bot access prevention
- Viewer role read-only enforcement
- Removed member immediate access revocation
- Model provider credential isolation
- WebSocket message isolation
- Invitation token workspace scoping
- Multi-workspace context validation

These tests address P0-2 coverage gaps for:
- workspaces.py (membership & invitation flows)
- user.py (authentication & authorization)
- websocket_chat.py (real-time isolation)
- plugins.py (resource access control)

docs: finalize database migration guide

* fix(security): resolve M-1, M-2, M-3 security findings

M-1: WebSocket authorization TOCTOU race (FIXED)
- Changed _revalidate_websocket_authorization to return RequestContext
- Ensures validated context is used immediately without race window
- Prevents removed members from sending messages during revalidation gap

M-2: Model Manager cache workspace isolation (VERIFIED)
- Confirmed _CacheKey already uses 4-tuple: (instance, workspace, generation, resource)
- Cache is properly scoped per workspace, no cross-tenant leakage possible
- No code change needed, documented as working correctly

M-3: Invitation lock workspace scoping (FIXED)
- Changed lock key from token_digest to workspace_uuid:token_digest
- Prevents DoS where attacker locks token in Workspace A to block Workspace B
- Locks now isolated per workspace

All MEDIUM severity findings from security review now resolved.

* fix(cloud): unblock tenant CI and enforce knowledge quotas

* fix(tenancy): scope rerank model sync

---------

Co-authored-by: dadachann <185672915+dadachann@users.noreply.github.com>

web/src/app/home/components/api-integration-dialog/ApiIntegrationPanel.tsx

@@ -40,12 +40,20 @@ import { PanelToolbar } from '../settings-dialog/panel-layout';
 
 interface ApiKey {
   id: number;
+  uuid: string;
   name: string;
-  key: string;
   description: string;
+  scopes: string[];
+  status: 'active' | 'revoked';
+  secret_available: false;
   created_at: string;
 }
 
+type CreatedApiKey = Omit<ApiKey, 'secret_available'> & {
+  key: string;
+  secret_available: true;
+};
+
 interface Webhook {
   id: number;
   name: string;
@@ -71,7 +79,7 @@ export default function ApiIntegrationPanel({
   const [showCreateDialog, setShowCreateDialog] = useState(false);
   const [newKeyName, setNewKeyName] = useState('');
   const [newKeyDescription, setNewKeyDescription] = useState('');
-  const [createdKey, setCreatedKey] = useState<ApiKey | null>(null);
+  const [createdKey, setCreatedKey] = useState<CreatedApiKey | null>(null);
   const [deleteKeyId, setDeleteKeyId] = useState<number | null>(null);
 
   // Webhook state
@@ -135,7 +143,7 @@ export default function ApiIntegrationPanel({
       const response = (await backendClient.post('/api/v1/apikeys', {
         name: newKeyName,
         description: newKeyDescription,
-      })) as { key: ApiKey };
+      })) as { key: CreatedApiKey };
 
       setCreatedKey(response.key);
       toast.success(t('common.apiKeyCreated'));
@@ -184,11 +192,6 @@ export default function ApiIntegrationPanel({
     copiedTimerRef.current = setTimeout(() => setCopiedKey(null), 2000);
   };
 
-  const maskApiKey = (key: string) => {
-    if (key.length <= 8) return key;
-    return `${key.substring(0, 8)}...${key.substring(key.length - 4)}`;
-  };
-
   // Webhook methods
   const loadWebhooks = async () => {
     setLoading(true);
@@ -337,25 +340,12 @@ export default function ApiIntegrationPanel({
                         </div>
                       </TableCell>
                       <TableCell>
-                        <code className="text-sm bg-muted px-2 py-1 rounded">
-                          {maskApiKey(item.key)}
-                        </code>
+                        <span className="text-sm text-muted-foreground">
+                          {t('common.apiKeyStoredSecurely')}
+                        </span>
                       </TableCell>
                       <TableCell>
                         <div className="flex gap-2">
-                          <Button
-                            variant="ghost"
-                            size="sm"
-                            type="button"
-                            onClick={() => handleCopyKey(item.key)}
-                            title={t('common.copyApiKey')}
-                          >
-                            {copiedKey === item.key ? (
-                              <Check className="h-4 w-4 text-green-600" />
-                            ) : (
-                              <Copy className="h-4 w-4" />
-                            )}
-                          </Button>
                           <Button
                             variant="ghost"
                             size="sm"