collapse the dual-world type layer and delete the widening shims

The types/bsky post/profile/starterPack unions drop their @atproto/api arms,
and dangerousIsType/validate go with the old-world guards they wrapped. The
moderation subjects.ts widening shim and rich-text-helpers' asSdkFacets both
existed only to bridge branded and unbranded views, so their 55 and 14 callers
now go straight to @bsky.app/sdk/moderation and the raw facets.

Boundary fallout: lexicon token defs are camelCase schema objects needing
.value, and the branded string slots that the widening used to absorb are now
cast or branded at their producers.

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

src/screens/PostThread/components/LikesStat.tsx

@@ -1,9 +1,9 @@
 import {View} from 'react-native'
+import {moderateProfile} from '@bsky.app/sdk/moderation'
 import {Plural, Trans, useLingui} from '@lingui/react/macro'
 
 import {AtUri} from '@atproto/syntax'
 import {app} from '#/lexicons'
-import {moderateProfile} from '#/lib/moderation/subjects'
 import {makeProfileLink} from '#/lib/routes/links'
 import {sanitizeDisplayName} from '#/lib/strings/display-names'
 import {useModerationOpts} from '#/state/preferences/moderation-opts'

src/screens/PostThread/components/ThreadItemAnchor.tsx

@@ -10,7 +10,6 @@ import {useOpenComposer} from '#/lib/hooks/useOpenComposer'
 import {makeProfileLink} from '#/lib/routes/links'
 import {sanitizeDisplayName} from '#/lib/strings/display-names'
 import {sanitizeHandle} from '#/lib/strings/handles'
-import {asSdkFacets} from '#/lib/strings/rich-text-helpers'
 import {niceDate} from '#/lib/strings/time'
 import {
   POST_TOMBSTONE,
@@ -196,7 +195,7 @@ const ThreadItemAnchorInner = memo(function ThreadItemAnchorInner({
     () =>
       new RichTextAPI({
         text: record.text,
-        facets: asSdkFacets(record.facets),
+        facets: record.facets,
       }),
     [record],
   )

src/screens/PostThread/components/ThreadItemPost.tsx

@@ -9,7 +9,6 @@ import {MAX_POST_LINES} from '#/lib/constants'
 import {useOpenComposer} from '#/lib/hooks/useOpenComposer'
 import {makeProfileLink} from '#/lib/routes/links'
 import {countLines} from '#/lib/strings/helpers'
-import {asSdkFacets} from '#/lib/strings/rich-text-helpers'
 import {
   POST_TOMBSTONE,
   type Shadow,
@@ -209,7 +208,7 @@ const ThreadItemPostInner = memo(function ThreadItemPostInner({
     () =>
       new RichTextAPI({
         text: record.text,
-        facets: asSdkFacets(record.facets),
+        facets: record.facets,
       }),
     [record],
   )

src/screens/PostThread/components/ThreadItemTreePost.tsx

@@ -9,7 +9,6 @@ import {MAX_POST_LINES} from '#/lib/constants'
 import {useOpenComposer} from '#/lib/hooks/useOpenComposer'
 import {makeProfileLink} from '#/lib/routes/links'
 import {countLines} from '#/lib/strings/helpers'
-import {asSdkFacets} from '#/lib/strings/rich-text-helpers'
 import {
   POST_TOMBSTONE,
   type Shadow,
@@ -269,7 +268,7 @@ const ThreadItemTreePostInner = memo(function ThreadItemTreePostInner({
     () =>
       new RichTextAPI({
         text: record.text,
-        facets: asSdkFacets(record.facets),
+        facets: record.facets,
       }),
     [record],
   )