feat(core): add allowGuestDemoWorkspace flag to force login (#12779)

https://github.com/user-attachments/assets/41a659c9-6def-4492-be8e-5910eb148d6f

This PR enforces login‑first access (#8716) by disabling or enabling the
guest demo workspace via Admin Server Client Page and redirecting
unauthenticated users straight to `/sign‑in`.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Added a configuration option to control whether guest users can create
demo workspaces.
* Updated server and client interfaces, GraphQL schema, and queries to
support the new guest demo workspace flag.

* **Bug Fixes**
* Improved sign-out behavior to redirect users appropriately based on
guest demo workspace permissions.
* Enhanced navigation flow to handle guest demo workspace access and
user authentication state.

* **Tests**
* Added tests to verify sign-out logic when guest demo workspaces are
enabled or disabled.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: liuyi <forehalo@gmail.com>
Co-authored-by: fengmk2 <fengmk2@gmail.com>

packages/frontend/core/src/modules/cloud/constant.ts

@@ -26,6 +26,7 @@ export const BUILD_IN_SERVERS: (ServerMetadata & { config: ServerConfig })[] =
                 maxLength: 32,
               },
             },
+            allowGuestDemoWorkspace: true,
           },
         },
       ]
@@ -56,6 +57,7 @@ export const BUILD_IN_SERVERS: (ServerMetadata & { config: ServerConfig })[] =
                   maxLength: 32,
                 },
               },
+              allowGuestDemoWorkspace: true,
             },
           },
         ]
@@ -88,6 +90,7 @@ export const BUILD_IN_SERVERS: (ServerMetadata & { config: ServerConfig })[] =
                     maxLength: 32,
                   },
                 },
+                allowGuestDemoWorkspace: true,
               },
             },
           ]
@@ -120,6 +123,7 @@ export const BUILD_IN_SERVERS: (ServerMetadata & { config: ServerConfig })[] =
                       maxLength: 32,
                     },
                   },
+                  allowGuestDemoWorkspace: true,
                 },
               },
             ]
@@ -148,6 +152,7 @@ export const BUILD_IN_SERVERS: (ServerMetadata & { config: ServerConfig })[] =
                         maxLength: 32,
                       },
                     },
+                    allowGuestDemoWorkspace: true,
                   },
                 },
               ]
@@ -178,6 +183,7 @@ export const BUILD_IN_SERVERS: (ServerMetadata & { config: ServerConfig })[] =
                           maxLength: 32,
                         },
                       },
+                      allowGuestDemoWorkspace: true,
                     },
                   },
                 ]

packages/frontend/core/src/modules/cloud/entities/server.ts

@@ -82,6 +82,7 @@ export class Server extends Entity<{
             credentialsRequirement: config.credentialsRequirement,
             features: config.features,
             oauthProviders: config.oauthProviders,
+            allowGuestDemoWorkspace: config.allowGuestDemoWorkspace,
             serverName: config.name,
             type: config.type,
             version: config.version,

packages/frontend/core/src/modules/cloud/services/servers.ts

@@ -82,6 +82,7 @@ export class ServersService extends Service {
         credentialsRequirement: config.credentialsRequirement,
         features: config.features,
         oauthProviders: config.oauthProviders,
+        allowGuestDemoWorkspace: config.allowGuestDemoWorkspace,
         serverName: config.name,
         type: config.type,
         initialized: config.initialized,

packages/frontend/core/src/modules/cloud/types.ts

@@ -14,6 +14,7 @@ export interface ServerMetadata {
 export interface ServerConfig {
   serverName: string;
   features: ServerFeature[];
+  allowGuestDemoWorkspace: boolean;
   oauthProviders: OAuthProviderType[];
   type: ServerDeploymentType;
   initialized?: boolean;

packages/frontend/core/src/modules/feature-flag/constant.ts

@@ -1,7 +1,6 @@
 import type { FlagInfo } from './types';
 
 // const isNotStableBuild = BUILD_CONFIG.appBuildType !== 'stable';
-const isDesktopEnvironment = BUILD_CONFIG.isElectron;
 const isCanaryBuild = BUILD_CONFIG.appBuildType === 'canary';
 const isMobile = BUILD_CONFIG.isMobileEdition;
 
@@ -149,15 +148,6 @@ export const AFFINE_FLAGS = {
     configurable: isCanaryBuild && !isMobile,
     defaultState: isCanaryBuild,
   },
-  enable_local_workspace: {
-    category: 'affine',
-    displayName:
-      'com.affine.settings.workspace.experimental-features.enable-local-workspace.name',
-    description:
-      'com.affine.settings.workspace.experimental-features.enable-local-workspace.description',
-    configurable: isCanaryBuild,
-    defaultState: isDesktopEnvironment || isCanaryBuild,
-  },
   enable_advanced_block_visibility: {
     category: 'blocksuite',
     bsFlag: 'enable_advanced_block_visibility',