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/ProgressGuide/FollowDialog.tsx

@@ -207,7 +207,7 @@ function DialogInner({guide}: {guide?: Follow10ProgressGuide}) {
           type: 'profile',
           // Don't share identity across tabs or typing attempts
           key: resultsKey + ':' + profile.did,
-          profile,
+          profile: profile as bsky.profile.AnyProfileView,
         })
       }
     }