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/components/dms/InitiateChatFlow.tsx

@@ -7,7 +7,7 @@ import {
   useState,
 } from 'react'
 import {LayoutAnimation, type TextInput, View} from 'react-native'
-import {moderateProfile, type ModerationOpts} from '@atproto/api'
+import {moderateProfile, type ModerationOpts} from '@bsky.app/sdk/moderation'
 import {Plural, Trans, useLingui} from '@lingui/react/macro'
 
 import {MAX_GROUP_NAME_GRAPHEME_LENGTH} from '#/lib/constants'
@@ -54,6 +54,7 @@ import {Text} from '#/components/Typography'
 import {useAgeAssurance} from '#/ageAssurance'
 import {IS_NATIVE, IS_WEB} from '#/env'
 import type * as bsky from '#/types/bsky'
+import {toLex} from '#/types/bsky'
 
 type NewGroupChatItem = {
   type: 'newGroupChat'
@@ -1070,7 +1071,8 @@ function DefaultProfileCard({
   const t = useTheme()
   const {t: l} = useLingui()
   const enabled = canBeMessaged(profile)
-  const moderation = moderateProfile(profile, moderationOpts)
+  // TODO(phase4): drop toLex once profile prop emits #/lexicons views
+  const moderation = moderateProfile(toLex(profile), moderationOpts)
   const handle = sanitizeHandle(profile.handle, '@')
   const displayName = sanitizeDisplayName(
     profile.displayName || sanitizeHandle(profile.handle),