[APP-1356] Policy update dialog (#8782)

* Add blocking announcement dialog feature

* WIP custom dialog

* Rework dialog and add native FocusScope

* Lock scroll on web, fix backdrop

* Add web FocusScope

* Create custom Outlet for these announcements

* Clean up FocusScope native impl

* Comments

* Some styling fixes

* Handle screen reader specifically

* Clean up state, remove Portal edits

* Reorg, rename

* Add syncing, tests

* Revert dialog updates

* Revert formatting

* Delete unused file

* Format

* Add FullWindowOverlay

* remove mmkv storage in debug btn

* Add debug code

* fix taps passing through on iOS

* Reorg

* Reorg, rename everything

* Complete policy update after signup

* Add logger

* Move context around, unmount portals on native

* Move a11y prop into FocusScope

* Remove useMemo

* Update dates

* Move debug to dev settings

* Unmount web portals until policy update completed

* UPdate dates

---------

Co-authored-by: Samuel Newman <mozzius@protonmail.com>

src/screens/Settings/Settings.tsx

@@ -25,6 +25,7 @@ import {clearStorage} from '#/state/persisted'
 import {useModerationOpts} from '#/state/preferences/moderation-opts'
 import {useDeleteActorDeclaration} from '#/state/queries/messages/actor-declaration'
 import {useProfileQuery, useProfilesQuery} from '#/state/queries/profile'
+import {useAgent} from '#/state/session'
 import {type SessionAccount, useSession, useSessionApi} from '#/state/session'
 import {useOnboardingDispatch} from '#/state/shell'
 import {useLoggedOutViewControls} from '#/state/shell/logged-out'
@@ -35,6 +36,7 @@ import * as SettingsList from '#/screens/Settings/components/SettingsList'
 import {atoms as a, platform, tokens, useBreakpoints, useTheme} from '#/alf'
 import {AgeAssuranceDismissibleNotice} from '#/components/ageAssurance/AgeAssuranceDismissibleNotice'
 import {AvatarStackWithFetch} from '#/components/AvatarStack'
+import {Button, ButtonText} from '#/components/Button'
 import {useDialogControl} from '#/components/Dialog'
 import {SwitchAccountDialog} from '#/components/dialogs/SwitchAccount'
 import {Accessibility_Stroke2_Corner2_Rounded as AccessibilityIcon} from '#/components/icons/Accessibility'
@@ -58,6 +60,7 @@ import {Window_Stroke2_Corner2_Rounded as WindowIcon} from '#/components/icons/W
 import * as Layout from '#/components/Layout'
 import {Loader} from '#/components/Loader'
 import * as Menu from '#/components/Menu'
+import {ID as PolicyUpdate202508} from '#/components/PolicyUpdateOverlay/updates/202508/config'
 import * as Prompt from '#/components/Prompt'
 import {Text} from '#/components/Typography'
 import {useFullVerificationState} from '#/components/verification'
@@ -66,6 +69,7 @@ import {
   VerificationCheckButton,
 } from '#/components/verification/VerificationCheckButton'
 import {IS_INTERNAL} from '#/env'
+import {device, useStorage} from '#/storage'
 import {useActivitySubscriptionsNudged} from '#/storage/hooks/activity-subscriptions-nudged'
 
 type Props = NativeStackScreenProps<CommonNavigatorParams, 'Settings'>
@@ -363,6 +367,10 @@ function ProfilePreview({
 
 function DevOptions() {
   const {_} = useLingui()
+  const agent = useAgent()
+  const [override, setOverride] = useStorage(device, [
+    'policyUpdateDebugOverride',
+  ])
   const onboardingDispatch = useOnboardingDispatch()
   const navigation = useNavigation<NavigationProp>()
   const {mutate: deleteChatDeclarationRecord} = useDeleteActorDeclaration()
@@ -502,6 +510,40 @@ function DevOptions() {
           </SettingsList.ItemText>
         </SettingsList.PressableItem>
       ) : null}
+
+      <SettingsList.Divider />
+      <View style={[a.p_xl, a.gap_md]}>
+        <Text style={[a.text_lg, a.font_bold]}>PolicyUpdate202508 Debug</Text>
+
+        <View style={[a.flex_row, a.align_center, a.justify_between, a.gap_md]}>
+          <Button
+            onPress={() => {
+              setOverride(!override)
+            }}
+            label="Toggle"
+            color={override ? 'primary' : 'secondary'}
+            size="small"
+            style={[a.flex_1]}>
+            <ButtonText>
+              {override ? 'Disable debug mode' : 'Enable debug mode'}
+            </ButtonText>
+          </Button>
+
+          <Button
+            onPress={() => {
+              device.set([PolicyUpdate202508], false)
+              agent.bskyAppRemoveNuxs([PolicyUpdate202508])
+              Toast.show(`Done`, 'info')
+            }}
+            label="Reset policy update nux"
+            color="secondary"
+            size="small"
+            disabled={!override}>
+            <ButtonText>Reset state</ButtonText>
+          </Button>
+        </View>
+      </View>
+      <SettingsList.Divider />
     </>
   )
 }