migrate the preference read-modify-writes to sdk actions

The preferences hooks, nuxs, labeler subscriptions, list mute/block, post
interaction settings, interests and live event preferences move onto
@bsky.app/sdk actions. Preference reads and writes route through the pds
client because they live on the account's actor store, not behind the
appview proxy; the list mute writes stay on the appview client, which is
where that graph endpoint lives.

BskyAgent.getPreferences configured the agent's labelers as a side effect,
so a labeler subscription took effect on the next appview read. The sdk
action does not, so the query now calls configureLabelers explicitly.

Exported hook signatures, query keys and the usePreferencesQuery response
shape are unchanged: the sdk's BskyPreferences is field-for-field identical
to the legacy one apart from branded strings, so the response is cast at
that single seam and the muted-word and nux mutation inputs stay
legacy-typed with a cast into the action.

src/screens/Settings/InterestsSettings.tsx

@@ -1,5 +1,6 @@
 import {useMemo, useState} from 'react'
 import {type TextStyle, View, type ViewStyle} from 'react-native'
+import {setInterestsPref} from '@bsky.app/sdk'
 import {msg} from '@lingui/core/macro'
 import {useLingui} from '@lingui/react'
 import {Trans} from '@lingui/react/macro'
@@ -23,7 +24,7 @@ import {createGetSuggestedUsersForDiscoverQueryKey} from '#/state/queries/trendi
 import {createGetSuggestedUsersForExploreQueryKey} from '#/state/queries/trending/useGetSuggestedUsersForExploreQuery'
 import {createGetSuggestedUsersForSeeMoreQueryKey} from '#/state/queries/trending/useGetSuggestedUsersForSeeMoreQuery'
 import {createSuggestedStarterPacksQueryKey} from '#/state/queries/useSuggestedStarterPacksQuery'
-import {useAgent} from '#/state/session'
+import {usePdsClient} from '#/state/session'
 import {atoms as a, useGutters, useTheme} from '#/alf'
 import {Admonition} from '#/components/Admonition'
 import {Divider} from '#/components/Divider'
@@ -88,7 +89,7 @@ function Inner({
   setIsSaving: (isSaving: boolean) => void
 }) {
   const {_} = useLingui()
-  const agent = useAgent()
+  const pdsClient = usePdsClient()
   const qc = useQueryClient()
   const interestsDisplayNames = useInterestsDisplayNames()
   const preselectedInterests = useMemo(
@@ -110,7 +111,7 @@ function Inner({
       setIsSaving(true)
 
       try {
-        await agent.setInterestsPref({tags: interests})
+        await pdsClient.call(setInterestsPref, {tags: interests})
         qc.setQueriesData(
           {queryKey: preferencesQueryKey},
           (old?: UsePreferencesQueryResponse) => {
@@ -157,7 +158,7 @@ function Inner({
         setIsSaving(false)
       }
     }, 1500)
-  }, [_, agent, setIsSaving, qc, preselectedInterests])
+  }, [_, pdsClient, setIsSaving, qc, preselectedInterests])
 
   const onChangeInterests = async (interests: string[]) => {
     setInterests(interests)

src/screens/Settings/Settings.tsx

@@ -2,6 +2,7 @@ import {useState} from 'react'
 import {Alert, LayoutAnimation, Linking, Pressable, View} from 'react-native'
 import {useReducedMotion} from 'react-native-reanimated'
 import {type AppBskyActorDefs, moderateProfile} from '@atproto/api'
+import {removeNuxs} from '@bsky.app/sdk'
 import {Trans, useLingui} from '@lingui/react/macro'
 import {useNavigation} from '@react-navigation/native'
 import {type NativeStackScreenProps} from '@react-navigation/native-stack'
@@ -21,7 +22,7 @@ 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 {usePdsClient} from '#/state/session'
 import {type SessionAccount, useSession, useSessionApi} from '#/state/session'
 import {useOnboardingDispatch} from '#/state/shell'
 import {useLoggedOutViewControls} from '#/state/shell/logged-out'
@@ -385,7 +386,7 @@ function ProfilePreview({
 
 function DevOptions() {
   const {t: l} = useLingui()
-  const agent = useAgent()
+  const pdsClient = usePdsClient()
   const [override, setOverride] = useStorage(device, [
     'policyUpdateDebugOverride',
   ])
@@ -560,7 +561,7 @@ function DevOptions() {
           <Button
             onPress={() => {
               device.set([PolicyUpdate202508], false)
-              void agent.bskyAppRemoveNuxs([PolicyUpdate202508])
+              void pdsClient.call(removeNuxs, [PolicyUpdate202508])
               Toast.show(`Done`, {
                 type: 'info',
               })