chore(core): add feature flag for ios AI button (#10150)

close AF-2209, AF-2104

packages/frontend/core/src/mobile/pages/workspace/detail/mobile-detail-page.tsx

@@ -86,6 +86,9 @@ const DetailPageImpl = () => {
     featureFlagService.flags.enable_mobile_keyboard_toolbar.value;
   const enableEdgelessEditing =
     featureFlagService.flags.enable_mobile_edgeless_editing.value;
+  const enableAIButton = useLiveData(
+    featureFlagService.flags.enable_ios_ai_button.$
+  );
 
   // TODO(@eyhn): remove jotai here
   const [_, setActiveBlockSuiteEditor] = useActiveBlocksuiteEditor();
@@ -113,12 +116,13 @@ const DetailPageImpl = () => {
   }, [doc, globalContext, mode]);
 
   useEffect(() => {
+    if (!enableAIButton) return;
     aIButtonService.presentAIButton(true);
 
     return () => {
       aIButtonService.presentAIButton(false);
     };
-  }, [aIButtonService]);
+  }, [aIButtonService, enableAIButton]);
 
   useEffect(() => {
     globalContext.isTrashDoc.set(!!isInTrash);

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

@@ -260,6 +260,13 @@ export const AFFINE_FLAGS = {
     configurable: isCanaryBuild,
     defaultState: false,
   },
+  enable_ios_ai_button: {
+    category: 'affine',
+    displayName: 'Enable AI Button',
+    description: 'Enable AI Button on iOS',
+    configurable: BUILD_CONFIG.isIOS,
+    defaultState: false,
+  },
 } satisfies { [key in string]: FlagInfo };
 
 // oxlint-disable-next-line no-redeclare