finish phase 3: type-only codemod and zero non-bridge @atproto/api imports

Task 8: codemod repointed 150 namespace-type files to #/lexicons
(AppBskyFeedDefs.PostView -> app.bsky.feed.defs.PostView, .Record -> .Main)
plus ~105 hand-fixed consumers (composer/video state, DebugMod, Profile,
onboarding, dialogs). DM_SERVICE_HEADERS deleted; last chat call sites on
the chat client. RichText.tsx flipped to SDK-only. Remaining @atproto/api
importers: the three session bridge files, the deliberate dual-world
matcher in lib/xrpc-error.ts, and test fixtures. toLex boundary casts are
TODO(phase4)-tagged for bridge removal.

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

src/screens/Profile/Header/ProfileHeaderLabeler.tsx

@@ -1,6 +1,5 @@
 import {memo, useCallback, useMemo, useState} from 'react'
 import {View} from 'react-native'
-import {type AppBskyActorDefs, type AppBskyLabelerDefs} from '@atproto/api'
 import {moderateProfile, type ModerationOpts} from '@bsky.app/sdk/moderation'
 import {type RichText as RichTextAPI} from '@bsky.app/sdk/richtext'
 import {msg, plural} from '@lingui/core/macro'
@@ -33,6 +32,7 @@ import * as Toast from '#/components/Toast'
 import {Text} from '#/components/Typography'
 import {useAnalytics} from '#/analytics'
 import {IS_IOS} from '#/env'
+import {type app} from '#/lexicons'
 import {toLex} from '#/types/bsky'
 import {ProfileHeaderDisplayName} from './DisplayName'
 import {EditProfileDialog} from './EditProfileDialog'
@@ -41,8 +41,8 @@ import {ProfileHeaderMetrics} from './Metrics'
 import {ProfileHeaderShell} from './Shell'
 
 interface Props {
-  profile: AppBskyActorDefs.ProfileViewDetailed
-  labeler: AppBskyLabelerDefs.LabelerViewDetailed
+  profile: app.bsky.actor.defs.ProfileViewDetailed
+  labeler: app.bsky.labeler.defs.LabelerViewDetailed
   descriptionRT: RichTextAPI | null
   moderationOpts: ModerationOpts
   hideBackButton?: boolean
@@ -57,7 +57,7 @@ let ProfileHeaderLabeler = ({
   hideBackButton = false,
   isPlaceholderProfile,
 }: Props): React.ReactNode => {
-  const profile: Shadow<AppBskyActorDefs.ProfileViewDetailed> =
+  const profile: Shadow<app.bsky.actor.defs.ProfileViewDetailed> =
     useProfileShadow(profileUnshadowed)
   const t = useTheme()
   const ax = useAnalytics()
@@ -231,7 +231,7 @@ export function HeaderLabelerButtons({
   profile,
   minimal = false,
 }: {
-  profile: Shadow<AppBskyActorDefs.ProfileViewDetailed>
+  profile: Shadow<app.bsky.actor.defs.ProfileViewDetailed>
   /** disable the subscribe button */
   minimal?: boolean
 }) {