migrate runtime call sites to lex clients and sdk actions

Phase 3 tasks 3-7 (parallel wave): composer/post pipeline on
pdsClient/appviewClient with structural+instance blob guards and a golden
CID fixture test; chat Convo/EventBus/queries on the dedicated chat client;
preferences sugar to SDK actions on the PDS client; remaining state/queries
producers (usePostThread unspecced flip, video scoped-token clients,
notifications, starter packs, lists) to client.call; UI runtime sweep
(AtUri from @atproto/syntax, moderation fns from @bsky.app/sdk/moderation,
SDK RichText, ozone reason tokens, guard rewrites via #/types/bsky).

Intermediate checkpoint (hooks skipped): ~114 typecheck errors remain in
cross-boundary consumer files, resolved by the type-only codemod next.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/screens/Settings/components/PwiOptOut.tsx

@@ -1,6 +1,6 @@
 import {useCallback} from 'react'
 import {View} from 'react-native'
-import {type $Typed, ComAtprotoLabelDefs} from '@atproto/api'
+import {type $Typed, type ComAtprotoLabelDefs} from '@atproto/api'
 import {msg} from '@lingui/core/macro'
 import {useLingui} from '@lingui/react'
 import {Trans} from '@lingui/react/macro'
@@ -13,6 +13,7 @@ import {useSession} from '#/state/session'
 import {atoms as a, useTheme} from '#/alf'
 import * as Toggle from '#/components/forms/Toggle'
 import {Text} from '#/components/Typography'
+import {com} from '#/lexicons'
 import * as bsky from '#/types/bsky'
 
 export function PwiOptOut() {
@@ -35,9 +36,9 @@ export function PwiOptOut() {
       profile,
       updates: existing => {
         // create labels attr if needed
-        const labels: $Typed<ComAtprotoLabelDefs.SelfLabels> = bsky.validate(
+        const labels: $Typed<ComAtprotoLabelDefs.SelfLabels> = bsky.matches(
+          com.atproto.label.defs.selfLabels,
           existing.labels,
-          ComAtprotoLabelDefs.validateSelfLabels,
         )
           ? existing.labels
           : {