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/components/ListCard.tsx

@@ -1,6 +1,5 @@
 import {useEffect, useMemo} from 'react'
 import {View} from 'react-native'
-import {type AppBskyGraphDefs} from '@atproto/api'
 import {AtUri} from '@atproto/syntax'
 import {moderateUserList, type ModerationUI} from '@bsky.app/sdk/moderation'
 import {msg} from '@lingui/core/macro'
@@ -23,6 +22,7 @@ import {
 import {Link as InternalLink, type LinkProps} from '#/components/Link'
 import * as Hider from '#/components/moderation/Hider'
 import {Text} from '#/components/Typography'
+import {type app} from '#/lexicons'
 import type * as bsky from '#/types/bsky'
 import {toLex} from '#/types/bsky'
 
@@ -45,7 +45,7 @@ const CURATELIST = 'app.bsky.graph.defs#curatelist'
 const MODLIST = 'app.bsky.graph.defs#modlist'
 
 type Props = {
-  view: AppBskyGraphDefs.ListView
+  view: app.bsky.graph.defs.ListView
   showPinButton?: boolean
 }
 
@@ -110,7 +110,7 @@ export function TitleAndByline({
 }: {
   title: string
   creator?: bsky.profile.AnyProfileView
-  purpose?: AppBskyGraphDefs.ListView['purpose']
+  purpose?: app.bsky.graph.defs.ListView['purpose']
   modUi?: ModerationUI
 }) {
   const t = useTheme()
@@ -159,7 +159,7 @@ export function TitleAndByline({
 export function createProfileListHref({
   list,
 }: {
-  list: AppBskyGraphDefs.ListView
+  list: app.bsky.graph.defs.ListView
 }) {
   const urip = new AtUri(list.uri)
   const handleOrDid = list.creator.handle || list.creator.did