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/state/queries/useOnboardingSuggestedStarterPacksQuery.ts

@@ -8,6 +8,8 @@ import {getContentLanguages} from '#/state/preferences/languages'
 import {STALE} from '#/state/queries'
 import {usePreferencesQuery} from '#/state/queries/preferences'
 import {useAgent} from '#/state/session'
+import {type app} from '#/lexicons'
+import {toLex} from '#/types/bsky'
 
 export const createOnboardingSuggestedStarterPacksQueryKey = (
   interests?: string[],
@@ -43,7 +45,14 @@ export function useOnboardingSuggestedStarterPacksQuery({
             },
           },
         )
-      return data
+      /*
+       * TODO(phase4): drop toLex once getOnboardingSuggestedStarterPacks
+       * migrates off the bridge agent (intentionally left on the bridge in
+       * Phase 3).
+       */
+      return toLex<app.bsky.unspecced.getOnboardingSuggestedStarterPacks.$OutputBody>(
+        data,
+      )
     },
   })
 }