refactor: metadata store cleanup, SSE unification, mock metadata loading & login redirect fix (#18651)

## Summary
- **SSE unification**: Replaced 11 individual SSE effect components with
a single generic `MetadataStoreSSEEffect`
- **Metadata store cleanup**: Merged `metadataCollectionHashesState`
into `metadataStoreState` (currentCollectionHash / draftCollectionHash
per entity), moved `objectMetadataItemsSelector` to `object-metadata`
domain, converted `navigationMenuItemsState` to a derived selector
- **Naming clarity**: Renamed `isAppMetadataReadyState` →
`isMinimalMetadataReadyState`, `MetadataGater` → `MinimalMetadataGater`,
`useIsLogged` → `useHasAccessTokenPair`,
`patchMetadataStoreFromSSEEvent` now takes named object params
- **Mock metadata loading**: Added `generate-navigation-menu-items.ts`
script, rewrote `useLoadMockedMinimalMetadata` to load full
objects/fields/indexes/views/navItems from generated mock data, enabling
proper sign-in background rendering (table columns, view picker,
navigation)
- **Login/logout transitions**: `MinimalMetadataLoadEffect` manages
mocked↔real metadata transitions based on auth state,
`MainContextStoreProvider` computes context on auth pages for view
picker support
- **Login redirect fix**: `handleLoadWorkspaceAfterAuthentication` now
re-enables `isAppEffectRedirectEnabled` after `loadCurrentUser()`
completes, fixing the blocked post-login navigation
- **Dead code removal**: Deleted `useRefreshPageLayouts`,
`useApplyPageLayouts`, `useStaleMetadataEntities`,
`metadataCollectionHashesState`, and all individual SSE effects

## Test plan
- [x] Login from welcome page redirects to companies page
- [x] Logout transitions cleanly to mocked metadata on welcome page
- [x] Sign-in background shows table columns, view picker, and
navigation items
- [x] SSE events still update metadata store entries correctly
- [x] Navigation menu items persist across page refreshes
- [ ] CI: lint, typecheck, tests pass

packages/twenty-front/src/testing/decorators/PageDecorator.tsx

@@ -14,10 +14,12 @@ import { ClientConfigProviderEffect } from '@/client-config/components/ClientCon
 import { ApolloCoreClientMockedProvider } from '@/object-metadata/hooks/__mocks__/ApolloCoreClientMockedProvider';
 
 import { DefaultLayout } from '@/ui/layout/page/components/DefaultLayout';
-import { MetadataGater } from '@/metadata-store/components/MetadataGater';
-import { MetadataProviderInitialEffects } from '@/metadata-store/effect-components/MetadataProviderInitialEffects';
-import { IsAppMetadataReadyEffect } from '@/metadata-store/effect-components/IsAppMetadataReadyEffect';
+import { MinimalMetadataGater } from '@/metadata-store/components/MinimalMetadataGater';
+import { UserMetadataProviderInitialEffect } from '@/metadata-store/effect-components/UserMetadataProviderInitialEffect';
+import { IsMinimalMetadataReadyEffect } from '@/metadata-store/effect-components/IsMinimalMetadataReadyEffect';
+import { MinimalMetadataLoadEffect } from '@/metadata-store/effect-components/MinimalMetadataLoadEffect';
 import { jotaiStore } from '@/ui/utilities/state/jotai/jotaiStore';
+import { useState } from 'react';
 import { ClientConfigProvider } from '~/modules/client-config/components/ClientConfigProvider';
 import { mockedApolloClient } from '~/testing/mockedApolloClient';
 
@@ -72,8 +74,10 @@ const ApolloStorybookDevLogEffect = () => {
 await dynamicActivate(SOURCE_LOCALE);
 
 const Providers = () => {
+  const [store] = useState(() => jotaiStore);
+
   return (
-    <JotaiProvider store={jotaiStore}>
+    <JotaiProvider store={store}>
       <SnackBarComponentInstanceContext.Provider
         value={{ instanceId: 'snack-bar-manager' }}
       >
@@ -82,10 +86,11 @@ const Providers = () => {
             <ApolloStorybookDevLogEffect />
             <ClientConfigProviderEffect />
             <ClientConfigProvider>
-              <MetadataProviderInitialEffects />
-              <IsAppMetadataReadyEffect />
+              <UserMetadataProviderInitialEffect />
+              <MinimalMetadataLoadEffect />
+              <IsMinimalMetadataReadyEffect />
               <WorkspaceProviderEffect />
-              <MetadataGater>
+              <MinimalMetadataGater>
                 <ApolloCoreClientMockedProvider>
                   <PreComputedChipGeneratorsProvider>
                     <FullHeightStorybookLayout>
@@ -100,7 +105,7 @@ const Providers = () => {
                   </PreComputedChipGeneratorsProvider>
                   <MainContextStoreProvider />
                 </ApolloCoreClientMockedProvider>
-              </MetadataGater>
+              </MinimalMetadataGater>
             </ClientConfigProvider>
           </I18nProvider>
         </ApolloProvider>

packages/twenty-front/src/testing/decorators/RecordTableDecorator.tsx

@@ -1,14 +1,11 @@
 import { type Decorator } from '@storybook/react-vite';
-import { useSetAtomState } from '@/ui/utilities/state/jotai/hooks/useSetAtomState';
 
-import { CommandMenuComponentInstanceContext } from '@/command-menu/states/contexts/CommandMenuComponentInstanceContext';
 import { getCommandMenuIdFromRecordIndexId } from '@/command-menu-item/utils/getCommandMenuIdFromRecordIndexId';
+import { CommandMenuComponentInstanceContext } from '@/command-menu/states/contexts/CommandMenuComponentInstanceContext';
 import { MAIN_CONTEXT_STORE_INSTANCE_ID } from '@/context-store/constants/MainContextStoreInstanceId';
 import { contextStoreCurrentViewIdComponentState } from '@/context-store/states/contextStoreCurrentViewIdComponentState';
 import { labelIdentifierFieldMetadataItemSelector } from '@/object-metadata/states/labelIdentifierFieldMetadataItemSelector';
 import { objectMetadataItemsState } from '@/object-metadata/states/objectMetadataItemsState';
-import { useAtomFamilySelectorValue } from '@/ui/utilities/state/jotai/hooks/useAtomFamilySelectorValue';
-import { useAtomStateValue } from '@/ui/utilities/state/jotai/hooks/useAtomStateValue';
 import { type ObjectMetadataItem } from '@/object-metadata/types/ObjectMetadataItem';
 import { formatFieldMetadataItemAsColumnDefinition } from '@/object-metadata/utils/formatFieldMetadataItemAsColumnDefinition';
 import { RecordComponentInstanceContextsWrapper } from '@/object-record/components/RecordComponentInstanceContextsWrapper';
@@ -28,9 +25,11 @@ import { getRecordIndexIdFromObjectNamePluralAndViewId } from '@/object-record/u
 import { getObjectPermissionsFromMapByObjectMetadataId } from '@/settings/roles/role-permissions/objects-permissions/utils/getObjectPermissionsFromMapByObjectMetadataId';
 import { useAtomComponentSelectorValue } from '@/ui/utilities/state/jotai/hooks/useAtomComponentSelectorValue';
 import { useAtomComponentStateValue } from '@/ui/utilities/state/jotai/hooks/useAtomComponentStateValue';
+import { useAtomFamilySelectorValue } from '@/ui/utilities/state/jotai/hooks/useAtomFamilySelectorValue';
+import { useAtomStateValue } from '@/ui/utilities/state/jotai/hooks/useAtomStateValue';
 import { useSetAtomComponentState } from '@/ui/utilities/state/jotai/hooks/useSetAtomComponentState';
+import { jotaiStore } from '@/ui/utilities/state/jotai/jotaiStore';
 import { ViewComponentInstanceContext } from '@/views/states/contexts/ViewComponentInstanceContext';
-import { coreViewsState } from '@/views/states/coreViewState';
 import { type CoreViewWithRelations } from '@/views/types/CoreViewWithRelations';
 import { type View } from '@/views/types/View';
 import { mapViewFieldToRecordField } from '@/views/utils/mapViewFieldToRecordField';
@@ -38,6 +37,7 @@ import { useEffect, useMemo } from 'react';
 import { isDefined } from 'twenty-shared/utils';
 import { mockedCompanyRecords } from '~/testing/mock-data/generated/data/companies/mock-companies-data';
 import { mockedCoreViews } from '~/testing/mock-data/generated/metadata/views/mock-views-data';
+import { setTestCoreViewsInMetadataStore } from '~/testing/utils/setTestCoreViewsInMetadataStore';
 
 const companyView = mockedCoreViews.find((v) => v.name === 'All Companies')!;
 
@@ -57,8 +57,6 @@ const InternalTableStateLoaderEffect = ({
     MAIN_CONTEXT_STORE_INSTANCE_ID,
   );
 
-  const setCoreViews = useSetAtomState(coreViewsState);
-
   const setRecordTableData = useSetRecordTableData({
     recordTableId,
   });
@@ -81,7 +79,9 @@ const InternalTableStateLoaderEffect = ({
 
     setCurrentRecordFields(recordFields);
 
-    setCoreViews([view as unknown as CoreViewWithRelations]);
+    setTestCoreViewsInMetadataStore(jotaiStore, [
+      view as unknown as CoreViewWithRelations,
+    ]);
 
     setContextStoreCurrentViewId(view.id);
   }, [
@@ -91,7 +91,6 @@ const InternalTableStateLoaderEffect = ({
     view,
     setCurrentRecordFields,
     setContextStoreCurrentViewId,
-    setCoreViews,
   ]);
 
   return null;