chore(admin): remove useless config diff (#12545)

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

- **New Features**
  - Added a GraphQL mutation to validate multiple app configuration updates, returning detailed validation results for each item.
  - Extended the API schema to support validation feedback, enabling client-side checks before applying changes.
  - Introduced a detailed, parameterized error message system for configuration validation errors.
  - Enabled validation of configuration inputs via the admin UI with clear, descriptive error messages.

- **Improvements**
  - Enhanced error reporting with specific, context-rich messages for invalid app configurations.
  - Simplified admin settings UI by removing the confirmation dialog and streamlining save actions.
  - Improved clarity and maintainability of validation logic and error handling components.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/backend/server/src/schema.gql

@@ -71,6 +71,14 @@ type AlreadyInSpaceDataType {
   spaceId: String!
 }
 
+type AppConfigValidateResult {
+  error: String
+  key: String!
+  module: String!
+  valid: Boolean!
+  value: JSON!
+}
+
 type BlobNotFoundDataType {
   blobId: String!
   spaceId: String!
@@ -523,7 +531,7 @@ type EditorType {
   name: String!
 }
 
-union ErrorDataUnion = AlreadyInSpaceDataType | BlobNotFoundDataType | CopilotContextFileNotSupportedDataType | CopilotDocNotFoundDataType | CopilotFailedToAddWorkspaceFileEmbeddingDataType | CopilotFailedToMatchContextDataType | CopilotFailedToMatchGlobalContextDataType | CopilotFailedToModifyContextDataType | CopilotInvalidContextDataType | CopilotMessageNotFoundDataType | CopilotPromptNotFoundDataType | CopilotProviderNotSupportedDataType | CopilotProviderSideErrorDataType | DocActionDeniedDataType | DocHistoryNotFoundDataType | DocNotFoundDataType | DocUpdateBlockedDataType | ExpectToGrantDocUserRolesDataType | ExpectToRevokeDocUserRolesDataType | ExpectToUpdateDocUserRoleDataType | GraphqlBadRequestDataType | HttpRequestErrorDataType | InvalidEmailDataType | InvalidHistoryTimestampDataType | InvalidIndexerInputDataType | InvalidLicenseToActivateDataType | InvalidLicenseUpdateParamsDataType | InvalidOauthCallbackCodeDataType | InvalidOauthResponseDataType | InvalidPasswordLengthDataType | InvalidRuntimeConfigTypeDataType | InvalidSearchProviderRequestDataType | MemberNotFoundInSpaceDataType | MentionUserDocAccessDeniedDataType | MissingOauthQueryParameterDataType | NoMoreSeatDataType | NotInSpaceDataType | QueryTooLongDataType | RuntimeConfigNotFoundDataType | SameSubscriptionRecurringDataType | SpaceAccessDeniedDataType | SpaceNotFoundDataType | SpaceOwnerNotFoundDataType | SpaceShouldHaveOnlyOneOwnerDataType | SubscriptionAlreadyExistsDataType | SubscriptionNotExistsDataType | SubscriptionPlanNotFoundDataType | UnknownOauthProviderDataType | UnsupportedClientVersionDataType | UnsupportedSubscriptionPlanDataType | ValidationErrorDataType | VersionRejectedDataType | WorkspacePermissionNotFoundDataType | WrongSignInCredentialsDataType
+union ErrorDataUnion = AlreadyInSpaceDataType | BlobNotFoundDataType | CopilotContextFileNotSupportedDataType | CopilotDocNotFoundDataType | CopilotFailedToAddWorkspaceFileEmbeddingDataType | CopilotFailedToMatchContextDataType | CopilotFailedToMatchGlobalContextDataType | CopilotFailedToModifyContextDataType | CopilotInvalidContextDataType | CopilotMessageNotFoundDataType | CopilotPromptNotFoundDataType | CopilotProviderNotSupportedDataType | CopilotProviderSideErrorDataType | DocActionDeniedDataType | DocHistoryNotFoundDataType | DocNotFoundDataType | DocUpdateBlockedDataType | ExpectToGrantDocUserRolesDataType | ExpectToRevokeDocUserRolesDataType | ExpectToUpdateDocUserRoleDataType | GraphqlBadRequestDataType | HttpRequestErrorDataType | InvalidAppConfigDataType | InvalidAppConfigInputDataType | InvalidEmailDataType | InvalidHistoryTimestampDataType | InvalidIndexerInputDataType | InvalidLicenseToActivateDataType | InvalidLicenseUpdateParamsDataType | InvalidOauthCallbackCodeDataType | InvalidOauthResponseDataType | InvalidPasswordLengthDataType | InvalidRuntimeConfigTypeDataType | InvalidSearchProviderRequestDataType | MemberNotFoundInSpaceDataType | MentionUserDocAccessDeniedDataType | MissingOauthQueryParameterDataType | NoMoreSeatDataType | NotInSpaceDataType | QueryTooLongDataType | RuntimeConfigNotFoundDataType | SameSubscriptionRecurringDataType | SpaceAccessDeniedDataType | SpaceNotFoundDataType | SpaceOwnerNotFoundDataType | SpaceShouldHaveOnlyOneOwnerDataType | SubscriptionAlreadyExistsDataType | SubscriptionNotExistsDataType | SubscriptionPlanNotFoundDataType | UnknownOauthProviderDataType | UnsupportedClientVersionDataType | UnsupportedSubscriptionPlanDataType | ValidationErrorDataType | VersionRejectedDataType | WorkspacePermissionNotFoundDataType | WrongSignInCredentialsDataType
 
 enum ErrorNames {
   ACCESS_DENIED
@@ -589,6 +597,7 @@ enum ErrorNames {
   HTTP_REQUEST_ERROR
   INTERNAL_SERVER_ERROR
   INVALID_APP_CONFIG
+  INVALID_APP_CONFIG_INPUT
   INVALID_AUTH_STATE
   INVALID_CHECKOUT_PARAMETERS
   INVALID_EMAIL
@@ -729,6 +738,16 @@ input ImportUsersInput {
   users: [CreateUserInput!]!
 }
 
+type InvalidAppConfigDataType {
+  hint: String!
+  key: String!
+  module: String!
+}
+
+type InvalidAppConfigInputDataType {
+  message: String!
+}
+
 type InvalidEmailDataType {
   email: String!
 }
@@ -1198,6 +1217,9 @@ type Mutation {
 
   """Upload user avatar"""
   uploadAvatar(avatar: Upload!): UserType!
+
+  """validate app configuration"""
+  validateAppConfig(updates: [UpdateAppConfigInput!]!): [AppConfigValidateResult!]!
   verifyEmail(token: String!): Boolean!
 }