Pass interests update time in topics header

package.json

@@ -117,7 +117,7 @@
     "@bsky.app/tapper": "^0.6.1",
     "@bsky.app/video": "0.3.6",
     "@bsky.app/video-compressor": "0.2.0",
-    "@bsky/sdk": "1.0.1",
+    "@bsky/sdk": "1.1.2",
     "@emoji-mart/data": "^1.2.1",
     "@emoji-mart/react": "^1.1.1",
     "@expo/html-elements": "^0.12.5",

pnpm-lock.yaml

@@ -297,8 +297,8 @@ importers:
         specifier: 0.2.0
         version: 0.2.0(expo@57.0.8)(react-native@0.86.0(patch_hash=dd549527bb84c88acc7b0b1d521c9f4b666fda484c75cd0b282f8e9838524909)(@babel/core@7.29.0(supports-color@8.1.1))(@react-native/jest-preset@0.86.0(@babel/core@7.29.0(supports-color@8.1.1))(react@19.2.3)(supports-color@8.1.1))(@react-native/metro-config@0.86.0(@babel/core@7.29.0(supports-color@8.1.1))(supports-color@8.1.1))(@types/react@19.2.18)(react@19.2.3)(supports-color@8.1.1))(react@19.2.3)
       '@bsky/sdk':
-        specifier: 1.0.1
-        version: 1.0.1(@atproto/lex@0.3.8)
+        specifier: 1.1.2
+        version: 1.1.2(@atproto/lex@0.3.8)
       '@emoji-mart/data':
         specifier: ^1.2.1
         version: 1.2.1
@@ -1750,8 +1750,8 @@ packages:
       react: '*'
       react-native: '*'
 
-  '@bsky/sdk@1.0.1':
-    resolution: {integrity: sha512-COhrmIZFsUJ1gj4gvqm2UWkRhTbmXZAL1osTZKgSaFftD4Xy0RRl8S9SRluCxo4/VPw/R3p7NQZ4X3BQFbUjVQ==}
+  '@bsky/sdk@1.1.2':
+    resolution: {integrity: sha512-wMZXVdxnSHViyVrqm+eOpJLZAwfuWLX8gvuCEyV++4k/E/gp9inxQevzuNyCFZv/XJAZ4xRh1WXN7kymF4UMXA==}
     engines: {node: '>=22.12.0'}
     peerDependencies:
       '@atproto/lex': ^0.3.0
@@ -10770,7 +10770,7 @@ snapshots:
       react: 19.2.3
       react-native: 0.86.0(patch_hash=dd549527bb84c88acc7b0b1d521c9f4b666fda484c75cd0b282f8e9838524909)(@babel/core@7.29.0(supports-color@8.1.1))(@react-native/jest-preset@0.86.0(@babel/core@7.29.0(supports-color@8.1.1))(react@19.2.3)(supports-color@8.1.1))(@react-native/metro-config@0.86.0(@babel/core@7.29.0(supports-color@8.1.1))(supports-color@8.1.1))(@types/react@19.2.18)(react@19.2.3)(supports-color@8.1.1)
 
-  '@bsky/sdk@1.0.1(@atproto/lex@0.3.8)':
+  '@bsky/sdk@1.1.2(@atproto/lex@0.3.8)':
     dependencies:
       '@atproto-labs/handle-resolver': 0.4.8
       '@atproto/lex': 0.3.8

src/lib/api/feed/__tests__/utils.test.ts

@@ -0,0 +1,50 @@
+import {describe, expect, it, jest} from '@jest/globals'
+
+import {type UsePreferencesQueryResponse} from '#/state/queries/preferences'
+
+jest.mock('#/env', () => ({IS_WEB: false}))
+
+import {aggregateUserInterests, createBskyTopicsHeader} from '../utils'
+
+function preferences(
+  interests: Pick<
+    UsePreferencesQueryResponse['interests'],
+    'tags' | 'updatedAt'
+  >,
+) {
+  return {interests} as UsePreferencesQueryResponse
+}
+
+describe('aggregateUserInterests', () => {
+  it('appends the update timestamp after a semicolon', () => {
+    expect(
+      createBskyTopicsHeader(
+        aggregateUserInterests(
+          preferences({
+            tags: ['animals', 'music'],
+            updatedAt: '2026-09-03T17:00:00.000Z',
+          }),
+        ),
+      ),
+    ).toEqual({
+      'x-atproto-bsky-topics': 'animals,music;2026-09-03T17:00:00.000Z',
+    })
+  })
+
+  it('supports interests created before update timestamps were recorded', () => {
+    expect(aggregateUserInterests(preferences({tags: ['animals']}))).toBe(
+      'animals',
+    )
+  })
+
+  it('passes the timestamp when the user has no selected interests', () => {
+    expect(
+      aggregateUserInterests(
+        preferences({
+          tags: [],
+          updatedAt: '2026-09-03T17:00:00.000Z',
+        }),
+      ),
+    ).toBe(';2026-09-03T17:00:00.000Z')
+  })
+})

src/lib/api/feed/utils.ts

@@ -19,7 +19,11 @@ export function createBskyTopicsHeader(userInterests?: string) {
 export function aggregateUserInterests(
   preferences?: UsePreferencesQueryResponse,
 ) {
-  return preferences?.interests?.tags?.join(',') || ''
+  const tags = preferences?.interests.tags ?? []
+  const updatedAt = preferences?.interests.updatedAt
+
+  const interests = tags.join(',')
+  return updatedAt ? `${interests};${updatedAt}` : interests
 }
 
 export function isBlueskyOwnedFeed(feedUri: string) {

src/screens/Settings/InterestsSettings.tsx

@@ -112,14 +112,7 @@ function Inner({
 
       try {
         await pdsClient.call(setInterestsPref, {tags: interests})
-        qc.setQueriesData(
-          {queryKey: preferencesQueryKey},
-          (old?: UsePreferencesQueryResponse) => {
-            if (!old) return old
-            old.interests.tags = interests
-            return old
-          },
-        )
+        await qc.invalidateQueries({queryKey: preferencesQueryKey})
         await Promise.all([
           qc.resetQueries({queryKey: createSuggestedStarterPacksQueryKey()}),
           qc.resetQueries({queryKey: createGetSuggestedFeedsQueryKey()}),