Merge architect branch for page-size-50

Merge finalized architect work: reduce paginated client page size to 50,
refactor paginated pages onto a shared base, and carry in the reviewed
youtube-embed property tests and startup smoke-check polish.

By specifier.

docs/reviews/page-size-50-summary.md

@@ -0,0 +1,76 @@
+# Review: page-size-50
+
+**By architect.**
+
+## Task and commits reviewed
+- Task: `page-size-50` — reduce the client page size from 100 to 50 across all paginated
+  pages (recent feed, following feed, topic feed, notifications, search, profile, recent
+  profiles) to cut payload size and reduce page load times, plus add pagination controls and
+  full acceptance coverage.
+- Inbound handoff: refactorer `a9488d9ae2` (fast-forward merge onto `swarmforge-architect`).
+- Reviewed commits: `81cedab` (spec), `59cce442`/merge `38f7a42` (implementation by coder),
+  `a9488d9` (refactorer — PaginatedPage base + property coverage), and `0dba837` (briefing/
+  backlog update after the youtube-embed merge).
+- Scope note: the fast-forward also carried the prior `0dba837` specifier/backlog update;
+  it is informational only, no code.
+
+## Architectural findings and fixes applied
+- **Good UI/Core separation:** page services remain pure, testable controllers with the MemoDb
+  client injected. The coder's change was a one-line default (`limit = 100` → `limit = 50`)
+  in each `load`/`submit` plus new `canLoadMore()` methods on the four pages that lacked them.
+- **Refactorer DRY extraction:** extracted a shared `PaginatedPage` base (new
+  `src/services/paginated-page.js`) and subclassed `RecentFeedPage` and `RecentProfilesPage`
+  onto it, removing the duplicated load/canLoadMore pattern. Dependency direction is correct:
+  the concrete pages depend on the pure base; the base has no IO. Each subclass keeps a thin
+  custom item-finder (`getPost`/`getProfile`). Clean, cohesive, well-hidden. No structural
+  changes required.
+- **Hardening (this review):** killed the surviving `canLoadMore` mutation in the base and the
+  three pages that added `canLoadMore` without tests (profile, search, topic-feed), plus
+  `notifications-page`, all of which had the same uncovered `?? false` default-on-null edge:
+  - Added new `test/unit/paginated-page.test.js` (6 tests) covering load storage, the
+    missing-client guard, the 50/0 defaults, and `canLoadMore` under null / missing-`hasMore`
+    pagination.
+  - Added `canLoadMore` null-pagination tests to `notifications`, `profile`, `search`, and
+    `topic-feed` unit test files.
+- **Documented equivalent (not chased):** the `notifications-page.js` constructor
+  `this.empty = false → true` mutation survives because `load()` always overwrites `empty`
+  before it is read (component and acceptance both read it after `load`). Genuine equivalent.
+- **Noted, not refactored:** the pagination Previous/Next UI is duplicated across the profile,
+  recent-profiles, and search components. Extracting a shared pagination component is a broad
+  cross-module UI refactor beyond this handoff; the controller-side dedup via `PaginatedPage`
+  is the appropriate scope here.
+
+## Verification results
+- **Language mutation** (`mutate4javascript <file> --max-workers 8 --mutate-all`, sequential):
+  - `paginated-page.js` Killed 5 / 0 survived / 0 uncovered
+  - `recent-feed-page.js` Killed 1 / 0 / 0
+  - `recent-profiles-page.js` Killed 1 / 0 / 0
+  - `following-feed-page.js` Killed 12 / 0 / 0
+  - `notifications-page.js` Killed 11 / 1 survived / 0 uncovered (the constructor `empty`
+    equivalent documented above)
+  - `profile-page.js` Killed 22 / 0 / 0
+  - `search-page.js` Killed 9 / 0 / 0
+  - `topic-feed-page.js` Killed 15 / 0 / 0
+  - `memo-db.js` is excluded from mutation testing (ESM + `../config` directory import,
+    standing precedent).
+- **DRY** (`dry4javascript`) on all touched services: no duplicate candidates.
+- **Soft Gherkin acceptance mutation** (`gherkin-mutator --level soft` on `page-size.feature`):
+  0 killed, 24 survived. All 24 are single-character case/value mutations of setup example
+  values — counts that stay above 50 and addresses/topics/queries/txids used consistently on
+  both sides of their scenario. Intrinsic equivalents for a read-only feature; not chased.
+- **Unit tests** (`npm test`): 280 passing (267 prior + 13 hardening), 0 fail.
+- **Property tests** (`npm run test:property`): 40 passing (37 prior + 3 new
+  `paginated-page` properties), 0 fail.
+- **Acceptance** (`npm run test:acceptance`): all 22 generated suites PASS, including the new
+  `page-size` scenarios.
+- **Lint:** clean. **Build:** OK.
+
+## Suite status
+- psf-memo-client: 280 unit, 40 property, acceptance PASS, lint clean, build OK.
+
+## Handoffs sent
+- `git_handoff` to coder and refactorer (`priority: 00`) with the review commit for follow-up
+  review.
+- No functional commit for the specifier (the task produced a functional client change, but
+  the specifier-authored spec `81cedab` is already merged and there is no new feature to
+  specify; the handoff chain ends at architect + coder/refactorer review).

docs/reviews/youtube-embed-summary.md

@@ -48,3 +48,49 @@
 ## Handoffs sent
 - `git_handoff` to coder and refactorer (`priority: 00`) with the review commit for follow-up
   review.
+
+---
+
+# Follow-up review: property tests (batch 20260904T164750Z)
+
+**By architect.**
+
+## Task and commits reviewed
+- Follow-up on `youtube-embed`: refactorer added property tests pinning down the parser's
+  invariants over broad random inputs.
+- Inbound handoff: refactorer `9ec8760b59` (merged onto `swarmforge-architect`).
+- Reviewed commit: `9ec8760b59` — new `psf-memo-client/test/property/youtube-embed.property.test.js`
+  (119 lines, 4 properties). No source change.
+
+## Architectural findings
+- **Good test placement:** property tests live in `test/property/`, separate from unit tests,
+  per the constitution (property tests are not part of normal unit coverage, mutation, CRAP,
+  or Gherkin mutation). They are run via the dedicated `npm run test:property` command.
+- **Sound invariants:** the four properties (round-trip reconstruction, segment shape with
+  URL-safe video ids, non-YouTube URLs staying text, and video-id round trips) are meaningful
+  and exercise the parser's URL splitting and trailing-punctuation handling over a token pool
+  that mixes words, YouTube links, non-YouTube links, and punctuation.
+- **Deterministic:** uses the shared seeded `harness.js` PRNG (seed 20260904), so runs are
+  reproducible. Tests run sequentially under node:test, so the shared rng stream is stable.
+- No structural or boundary issues; no changes required.
+
+## Verification results
+- **Property tests** (`npm run test:property`): 37 passing (33 prior + 4 new), 0 fail.
+- **Language mutation** (`mutate4javascript src/services/youtube-embed.js --max-workers 8 --mutate-all`):
+  Killed 6, Survived 1, Uncovered 0. The sole survivor (`line 82 1 -> 0` in `parsePostText`,
+  `match[1]` → `match[0]`) is the previously documented genuine equivalent (`URL_RE`'s capture
+  group spans the whole pattern). Property tests are excluded from mutation coverage by design.
+- **DRY** (`dry4javascript src/services/youtube-embed.js`): no duplicate candidates.
+- **Soft Gherkin acceptance mutation** (`gherkin-mutator --level soft` on `youtube-embed.feature`):
+  7 killed, 18 survived. All 18 survivors are single-character case/value mutations of example
+  values (addresses, txids, text, URLs) used consistently on both the setup and assertion sides
+  of their scenarios — intrinsic equivalents for a read-only feature, not implementation gaps.
+- **Unit tests** (`npm test`): 260 passing, 0 fail. **Lint:** clean.
+
+## Suite status
+- psf-memo-client: 260 unit passing, 37 property passing, lint clean. No source change, so
+  acceptance behavior is unchanged from the prior review.
+
+## Handoffs sent
+- `git_handoff` to coder and refactorer (`priority: 00`) with the review commit for follow-up
+  review.

psf-memo-client/acceptance/lib/handlers.js

@@ -42,6 +42,7 @@ const TopicDiscoveryPage = require('../../src/services/topic-discovery-page')
 const TopicFeedPage = require('../../src/services/topic-feed-page')
 const SearchPage = require('../../src/services/search-page')
 const NotificationsPage = require('../../src/services/notifications-page')
+const RecentProfilesPage = require('../../src/services/recent-profiles-page')
 const MemoTopicFollow = require('../../src/services/memo-topic-follow')
 const MemoTopicPost = require('../../src/services/memo-topic-post')
 const TopicPostPage = require('../../src/services/topic-post-page')
@@ -296,7 +297,7 @@ function makeMemoDb () {
       }
       return addrs
     },
-    async search (q) {
+    async search (q, { limit = 50, offset = 0 } = {}) {
       const normalized = String(q).trim().toLowerCase()
       if (normalized.length === 0) {
         return { posts: [], profiles: [], pagination: { total: 0, hasMore: false } }
@@ -308,18 +309,19 @@ function makeMemoDb () {
         (typeof p.name === 'string' && p.name.toLowerCase().includes(normalized)) ||
         (typeof p.text === 'string' && p.text.toLowerCase().includes(normalized))
       )
-      const total = matchedPosts.length + matchedProfiles.length
+      const total = matchedPosts.length
+      const page = matchedPosts.slice(offset, offset + limit)
       return {
-        posts: matchedPosts,
+        posts: page,
         profiles: matchedProfiles,
-        pagination: { total, hasMore: false }
+        pagination: { total, limit, offset, hasMore: offset + page.length < total }
       }
     },
-    async getRecentPosts ({ limit = 100, offset = 0 } = {}) {
+    async getRecentPosts ({ limit = 50, offset = 0 } = {}) {
       const page = posts.slice(offset, offset + limit)
       return { posts: page, pagination: { total: posts.length, limit, offset, hasMore: offset + page.length < posts.length } }
     },
-    async getPostsByAddr (addr, { limit = 100, offset = 0 } = {}) {
+    async getPostsByAddr (addr, { limit = 50, offset = 0 } = {}) {
       const filtered = posts.filter((p) => p.addr === addr)
       const page = filtered.slice(offset, offset + limit)
       return { posts: page, pagination: { total: filtered.length, limit, offset, hasMore: offset + page.length < filtered.length } }
@@ -341,12 +343,12 @@ function makeMemoDb () {
       list.sort((a, b) => a.room.localeCompare(b.room))
       return { topics: list }
     },
-    async getTopicPosts (room, { limit = 100, offset = 0 } = {}) {
+    async getTopicPosts (room, { limit = 50, offset = 0 } = {}) {
       const all = topicPosts[room] || []
       const page = all.slice(offset, offset + limit)
       return { posts: page, pagination: { total: all.length, limit, offset, hasMore: offset + page.length < all.length } }
     },
-    async getNotifications (addr, { limit = 100, offset = 0 } = {}) {
+    async getNotifications (addr, { limit = 50, offset = 0 } = {}) {
       const notifications = []
 
       for (const reply of replies) {
@@ -392,7 +394,11 @@ function makeMemoDb () {
       const page = notifications.slice(offset, offset + limit)
       return { notifications: page, pagination: { total, limit, offset, hasMore: offset + page.length < total } }
     },
-    async getFollowingFeed (addr, { limit = 100, offset = 0 } = {}) {
+    async getRecentProfiles ({ limit = 50, offset = 0 } = {}) {
+      const page = profiles.slice(offset, offset + limit)
+      return { profiles: page, pagination: { total: profiles.length, limit, offset, hasMore: offset + page.length < profiles.length } }
+    },
+    async getFollowingFeed (addr, { limit = 50, offset = 0 } = {}) {
       const followees = new Set()
       for (const [key, following] of Object.entries(followState)) {
         if (!following) continue
@@ -410,7 +416,7 @@ function makeMemoDb () {
 
 // Fresh world/state object for a single scenario execution.
 function createWorld () {
-  const wallet = makeWallet('')
+  const wallet = makeWallet('bitcoincash:qqlrzp23w08434twmvr4fxw672whkjy0py26r63g3d')
   const feed = makeFeed()
   const profiles = makeProfiles()
   const memoPost = new MemoPost({ wallet, feed })
@@ -456,6 +462,7 @@ function createWorld () {
     memoDb,
     navigate: (path) => { world.currentPath = path }
   })
+  world.recentProfilesPage = new RecentProfilesPage({ memoDb })
 
   // The New Post Page controller wraps the memo post behavior. Its navigate
   // adapter updates the world's current path so navigation can be asserted.
@@ -2632,13 +2639,264 @@ const handlers = [
     }
   },
   {
-    name: 'API serves post with address and text',
-    pattern: /^the psf-memo-db API serves a post with txid (.+) authored by the address (.+) with text (.+)$/,
+    name: 'API serves N recent posts',
+    pattern: /^the psf-memo-db API serves (<[A-Za-z0-9_]+>) recent posts$/,
     run (m, example, world) {
-      const txid = resolveParam(m[1], example)
+      const count = parseInt(resolveParam(m[1], example), 10)
+      for (let i = 0; i < count; i++) {
+        world.memoDb.addPost({
+          txid: `recent-post-${i + 1}`.padEnd(64, '0'),
+          addr: `addr-${i + 1}`,
+          text: `Recent post ${i + 1}`,
+          blockHeight: 100 + i
+        })
+      }
+    }
+  },
+  {
+    name: 'API serves N posts by address',
+    pattern: /^the psf-memo-db API serves (<[A-Za-z0-9_]+>) posts authored by the address (.+)$/,
+    run (m, example, world) {
+      const count = parseInt(resolveParam(m[1], example), 10)
       const addr = resolveParam(m[2], example)
-      const text = resolveText(m[3], example)
-      world.memoDb.addPost({ txid, addr, text, blockHeight: 100 })
+      for (let i = 0; i < count; i++) {
+        world.memoDb.addPost({
+          txid: `${addr}-post-${i + 1}`.padEnd(64, '0'),
+          addr,
+          text: `Post ${i + 1}`,
+          blockHeight: 100 + i
+        })
+      }
+    }
+  },
+  {
+    name: 'API serves N posts in topic',
+    pattern: /^the psf-memo-db API serves (<[A-Za-z0-9_]+>) posts in the topic (.+)$/,
+    run (m, example, world) {
+      const count = parseInt(resolveParam(m[1], example), 10)
+      const room = resolveParam(m[2], example)
+      for (let i = 0; i < count; i++) {
+        world.memoDb.addTopicPost(room, {
+          txid: `${room}-post-${i + 1}`.padEnd(64, '0'),
+          addr: `addr-${i + 1}`,
+          text: `Topic post ${i + 1}`,
+          blockHeight: 100 + i
+        })
+      }
+    }
+  },
+  {
+    name: 'API serves N replies to post',
+    pattern: /^the psf-memo-db API serves (<[A-Za-z0-9_]+>) replies to the post with txid (.+)$/,
+    run (m, example, world) {
+      const count = parseInt(resolveParam(m[1], example), 10)
+      const parentTxid = resolveParam(m[2], example)
+      for (let i = 0; i < count; i++) {
+        world.memoDb.addReply({
+          txid: `reply-${i + 1}`.padEnd(64, '0'),
+          parentTxid,
+          text: `Reply ${i + 1}`,
+          addr: 'bitcoincash:reply-author',
+          blockHeight: 100 + i
+        })
+      }
+    }
+  },
+  {
+    name: 'API serves N search posts',
+    pattern: /^the psf-memo-db API serves (<[A-Za-z0-9_]+>) search posts matching (.+)$/,
+    run (m, example, world) {
+      const count = parseInt(resolveParam(m[1], example), 10)
+      const query = resolveParam(m[2], example)
+      for (let i = 0; i < count; i++) {
+        world.memoDb.addSearchPost({
+          txid: `search-post-${i + 1}`.padEnd(64, '0'),
+          addr: `addr-${i + 1}`,
+          text: `${query} search result ${i + 1}`,
+          blockHeight: 100 + i
+        })
+      }
+    }
+  },
+  {
+    name: 'API serves N profiles',
+    pattern: /^the psf-memo-db API serves (<[A-Za-z0-9_]+>) profiles$/,
+    run (m, example, world) {
+      const count = parseInt(resolveParam(m[1], example), 10)
+      for (let i = 0; i < count; i++) {
+        world.memoDb.profiles.push({
+          addr: `profile-addr-${i + 1}`,
+          text: `Profile ${i + 1}`,
+          txid: `profile-txid-${i + 1}`.padEnd(64, '0'),
+          blockHeight: 100 + i,
+          seen: Date.now()
+        })
+      }
+    }
+  },
+  {
+    name: 'recent feed shows 50 posts',
+    pattern: /^the recent feed shows 50 posts$/,
+    run (m, example, world) {
+      const actual = world.recentFeedPage.posts.length
+      if (actual !== 50) {
+        throw new Error(`Expected 50 posts in recent feed, got ${actual}.`)
+      }
+    }
+  },
+  {
+    name: 'recent feed can load more posts',
+    pattern: /^the recent feed can load more posts$/,
+    run (m, example, world) {
+      if (!world.recentFeedPage.canLoadMore || !world.recentFeedPage.canLoadMore()) {
+        throw new Error('Expected recent feed to have more posts, but pagination says there are none.')
+      }
+    }
+  },
+  {
+    name: 'following feed shows 50 posts',
+    pattern: /^the following feed shows 50 posts$/,
+    run (m, example, world) {
+      const actual = world.followingFeedPage.posts.length
+      if (actual !== 50) {
+        throw new Error(`Expected 50 posts in following feed, got ${actual}.`)
+      }
+    }
+  },
+  {
+    name: 'following feed can load more posts',
+    pattern: /^the following feed can load more posts$/,
+    run (m, example, world) {
+      if (!world.followingFeedPage.canLoadMore()) {
+        throw new Error('Expected following feed to have more posts, but pagination says there are none.')
+      }
+    }
+  },
+  {
+    name: 'topic feed shows 50 posts',
+    pattern: /^the topic feed shows 50 posts$/,
+    run (m, example, world) {
+      const actual = world.topicFeedPage.posts.length
+      if (actual !== 50) {
+        throw new Error(`Expected 50 posts in topic feed, got ${actual}.`)
+      }
+    }
+  },
+  {
+    name: 'topic feed can load more posts',
+    pattern: /^the topic feed can load more posts$/,
+    run (m, example, world) {
+      if (!world.topicFeedPage.canLoadMore()) {
+        throw new Error('Expected topic feed to have more posts, but pagination says there are none.')
+      }
+    }
+  },
+  {
+    name: 'notifications show 50 notifications',
+    pattern: /^the notifications show 50 notifications$/,
+    run (m, example, world) {
+      const actual = world.notificationsPage.notifications.length
+      if (actual !== 50) {
+        throw new Error(`Expected 50 notifications, got ${actual}.`)
+      }
+    }
+  },
+  {
+    name: 'search results show 50 posts',
+    pattern: /^the search results show 50 posts$/,
+    run (m, example, world) {
+      const actual = world.searchPage.posts.length
+      if (actual !== 50) {
+        throw new Error(`Expected 50 posts in search results, got ${actual}.`)
+      }
+    }
+  },
+  {
+    name: 'search results can load more posts',
+    pattern: /^the search results can load more posts$/,
+    run (m, example, world) {
+      if (!world.searchPage.canLoadMore || !world.searchPage.canLoadMore()) {
+        throw new Error('Expected search results to have more pages, but pagination says there are none.')
+      }
+    }
+  },
+  {
+    name: 'profile page shows 50 posts',
+    pattern: /^the profile page shows 50 posts$/,
+    run (m, example, world) {
+      const actual = world.profilePage.posts.length
+      if (actual !== 50) {
+        throw new Error(`Expected 50 posts on profile page, got ${actual}.`)
+      }
+    }
+  },
+  {
+    name: 'profile page can load more posts',
+    pattern: /^the profile page can load more posts$/,
+    run (m, example, world) {
+      if (!world.profilePage.canLoadMore || !world.profilePage.canLoadMore()) {
+        throw new Error('Expected profile page to have more posts, but pagination says there are none.')
+      }
+    }
+  },
+  {
+    name: 'recent profiles page shows 50 profiles',
+    pattern: /^the recent profiles page shows 50 profiles$/,
+    run (m, example, world) {
+      const actual = world.recentProfilesPage.profiles.length
+      if (actual !== 50) {
+        throw new Error(`Expected 50 profiles on recent profiles page, got ${actual}.`)
+      }
+    }
+  },
+  {
+    name: 'recent profiles page can load more profiles',
+    pattern: /^the recent profiles page can load more profiles$/,
+    run (m, example, world) {
+      if (!world.recentProfilesPage.canLoadMore()) {
+        throw new Error('Expected recent profiles page to have more profiles, but pagination says there are none.')
+      }
+    }
+  },
+  {
+    name: 'open recent profiles page',
+    pattern: /^I open the recent profiles page$/,
+    async run (m, example, world) {
+      await world.recentProfilesPage.load()
+      world.currentPath = RecentProfilesPage.RECENT_PROFILES_PATH
+    }
+  },
+  {
+    name: 'open profile page for address',
+    pattern: /^I open the profile page for the address (.+)$/,
+    async run (m, example, world) {
+      const addr = resolveParam(m[1], example)
+      const myAddr = world.wallet.walletInfo.cashAddress
+      world.profilePage = new ProfilePage({
+        memoDb: world.memoDb,
+        addr,
+        myAddr,
+        memoFollow: world.memoFollow,
+        memoMute: world.memoMute
+      })
+      await world.profilePage.load()
+      world.currentPath = `${ProfilePage.PROFILE_PATH_PREFIX}/${encodeURIComponent(addr)}`
+    }
+  },
+  {
+    name: 'open topic feed for topic',
+    pattern: /^I open the topic feed for (.+)$/,
+    async run (m, example, world) {
+      const room = resolveParam(m[1], example)
+      const myAddr = world.wallet.walletInfo.cashAddress
+      world.topicFeedPage = new TopicFeedPage({
+        memoDb: world.memoDb,
+        room,
+        myAddr,
+        memoTopicFollow: world.memoTopicFollow
+      })
+      await world.topicFeedPage.load()
+      world.currentPath = TopicFeedPage.topicFeedPath(room)
     }
   },
   {

psf-memo-client/specs/page-size.feature

@@ -1,3 +1,7 @@
+# acceptance-mutation-manifest-begin
+# {"version":1,"tested_at":"2026-09-04T17:42:23.821120012Z","feature_name":"Page Size","feature_path":"/home/trout/work/psf-memo/.worktrees/architect/psf-memo-client/specs/page-size.feature","background_hash":"74234e98afe7498fb5daf1f36ac2d78acc339464f950703b8c019892f982b90b","implementation_hash":"unknown","scenarios":[]}
+# acceptance-mutation-manifest-end
+
 # Scenarios: Page Size - 1, Page Size - 2, Page Size - 3, Page Size - 4, Page Size - 5, Page Size - 6, Page Size - 7
 #
 # Every paginated page in the client requests 50 items per page instead of 100.

psf-memo-client/src/components/app-body/following-feed/index.js

@@ -18,7 +18,7 @@ import {
 import '../../../App.css'
 import '../../post-feed/post-feed.css'
 
-const PAGE_SIZE = 100
+const PAGE_SIZE = 50
 
 function FollowingFeed (props) {
   const { appData } = props

psf-memo-client/src/components/app-body/notifications/index.js

@@ -12,7 +12,7 @@ import MemoDb from '../../../services/memo-db'
 import NotificationsPage from '../../../services/notifications-page'
 import '../../../App.css'
 
-const PAGE_SIZE = 100
+const PAGE_SIZE = 50
 
 function notificationText (n) {
   if (n.type === 'reply') {

psf-memo-client/src/components/app-body/posts/index.js

@@ -17,7 +17,7 @@ import {
 import '../../../App.css'
 import '../../post-feed/post-feed.css'
 
-const PAGE_SIZE = 100
+const PAGE_SIZE = 50
 
 function RecentPosts (props) {
   const { appData } = props

psf-memo-client/src/components/app-body/profile/index.js

@@ -18,6 +18,8 @@ import PostThreadModal from '../../post-thread-modal'
 import '../../../App.css'
 import './profile.css'
 
+const PAGE_SIZE = 50
+
 function formatSeen (seen) {
   if (!seen) return ''
   const ms = seen > 1e12 ? seen : seen * 1000
@@ -64,6 +66,7 @@ function Profile (props) {
   const [showThreadModal, setShowThreadModal] = useState(false)
   const [profiles, setProfiles] = useState({})
   const [profilePage, setProfilePage] = useState(null)
+  const [offset, setOffset] = useState(0)
   const [busy, setBusy] = useState(false)
 
   const openThread = (txid) => {
@@ -114,7 +117,7 @@ function Profile (props) {
         const [profile, profilePic, pageData] = await Promise.all([
           memoDb.getProfile(addr),
           memoDb.getProfilePic(addr),
-          page.load()
+          page.load({ limit: PAGE_SIZE, offset })
         ])
 
         setProfileText(profile?.text || '')
@@ -136,13 +139,24 @@ function Profile (props) {
       setError('Missing profile address')
       setLoading(false)
     }
-  }, [addr, myAddr, wallet, appProfiles])
+  }, [addr, myAddr, wallet, appProfiles, offset])
 
   const showFollowButton = profilePage && profilePage.canFollow() && !profilePage.isFollowing()
   const showUnfollowButton = profilePage && profilePage.canFollow() && profilePage.isFollowing()
   const showMuteButton = profilePage && profilePage.canMute() && !profilePage.isMuting()
   const showUnmuteButton = profilePage && profilePage.canMute() && profilePage.isMuting()
 
+  const canGoBack = offset > 0
+  const canGoNext = pagination?.hasMore ?? false
+
+  const handlePrevious = () => {
+    setOffset((prev) => Math.max(0, prev - PAGE_SIZE))
+  }
+
+  const handleNext = () => {
+    setOffset((prev) => prev + PAGE_SIZE)
+  }
+
   return (
     <Container fluid className='profile-page mt-4'>
       {error && <p className='text-danger'>{error}</p>}
@@ -222,7 +236,7 @@ function Profile (props) {
               <h2 className='profile-posts-title'>Posts</h2>
               {pagination && (
                 <span className='text-muted'>
-                  {pagination.total} post{pagination.total === 1 ? '' : 's'}
+                  {pagination.offset + 1}–{pagination.offset + posts.length} of {pagination.total} posts
                 </span>
               )}
             </div>
@@ -249,6 +263,26 @@ function Profile (props) {
                 </Card.Body>
               </Card>
             ))}
+
+            {!loading && !error && (pagination || offset > 0) && (
+              <div className='profile-posts-pagination mt-3'>
+                <Button
+                  variant='outline-dark'
+                  onClick={handlePrevious}
+                  disabled={!canGoBack}
+                >
+                  Previous
+                </Button>
+
+                <Button
+                  variant='outline-dark'
+                  onClick={handleNext}
+                  disabled={!canGoNext}
+                >
+                  Next
+                </Button>
+              </div>
+            )}
           </Col>
         </Row>
       )}

psf-memo-client/src/components/app-body/recent-profiles/index.js

@@ -4,14 +4,16 @@
 
 import React, { useState, useEffect } from 'react'
 import { Link } from 'react-router-dom'
-import { Container, Row, Col, Spinner, Table } from 'react-bootstrap'
+import { Container, Row, Col, Spinner, Table, Button } from 'react-bootstrap'
 
 // Local libraries
 import MemoDb from '../../../services/memo-db'
+import RecentProfilesPage from '../../../services/recent-profiles-page'
 import AppUtil, { truncateAddr, truncateTxid } from '../../../util'
 import '../../../App.css'
 
 const appUtil = new AppUtil()
+const PAGE_SIZE = 50
 
 function formatSeen (seen) {
   if (!seen) return ''
@@ -24,22 +26,39 @@ function RecentProfiles () {
   const [error, setError] = useState(null)
   const [profiles, setProfiles] = useState([])
   const [pagination, setPagination] = useState(null)
+  const [offset, setOffset] = useState(0)
 
   useEffect(() => {
     const loadProfiles = async () => {
       try {
+        setLoading(true)
+        setError(null)
         const memoDb = new MemoDb()
-        const data = await memoDb.getRecentProfiles({ limit: 100, offset: 0 })
+        const page = new RecentProfilesPage({ memoDb })
+        const data = await page.load({ limit: PAGE_SIZE, offset })
         setProfiles(data.profiles || [])
         setPagination(data.pagination || null)
       } catch (err) {
         setError(err.message || 'Failed to load recent profiles')
+        setProfiles([])
+        setPagination(null)
       }
       setLoading(false)
     }
 
     loadProfiles()
-  }, [])
+  }, [offset])
+
+  const canGoBack = offset > 0
+  const canGoNext = pagination?.hasMore ?? false
+
+  const handlePrevious = () => {
+    setOffset((prev) => Math.max(0, prev - PAGE_SIZE))
+  }
+
+  const handleNext = () => {
+    setOffset((prev) => prev + PAGE_SIZE)
+  }
 
   return (
     <Container>
@@ -102,6 +121,26 @@ function RecentProfiles () {
               </tbody>
             </Table>
           )}
+
+          {!loading && !error && (pagination || offset > 0) && (
+            <div className='recent-profiles-pagination'>
+              <Button
+                variant='outline-dark'
+                onClick={handlePrevious}
+                disabled={!canGoBack}
+              >
+                Previous
+              </Button>
+
+              <Button
+                variant='outline-dark'
+                onClick={handleNext}
+                disabled={!canGoNext}
+              >
+                Next
+              </Button>
+            </div>
+          )}
         </Col>
       </Row>
     </Container>

psf-memo-client/src/components/app-body/search/index.js

@@ -12,6 +12,8 @@ import MemoDb from '../../../services/memo-db'
 import SearchPage from '../../../services/search-page'
 import '../../../App.css'
 
+const PAGE_SIZE = 50
+
 function SearchResults (props) {
   const { posts, profiles, searched } = props
 
@@ -64,6 +66,8 @@ function Search (props) {
   const [error, setError] = useState(null)
   const [posts, setPosts] = useState([])
   const [profiles, setProfiles] = useState([])
+  const [pagination, setPagination] = useState(null)
+  const [offset, setOffset] = useState(0)
   const [searched, setSearched] = useState(false)
 
   const handleSubmit = async (event) => {
@@ -71,23 +75,57 @@ function Search (props) {
     setLoading(true)
     setError(null)
     setSearched(true)
+    setOffset(0)
 
     try {
       const memoDb = new MemoDb()
       const page = new SearchPage({ memoDb })
       page.setQuery(query)
-      const result = await page.submit()
+      const result = await page.submit({ limit: PAGE_SIZE, offset: 0 })
       setPosts(result.posts || [])
       setProfiles(result.profiles || [])
+      setPagination(result.pagination || null)
     } catch (err) {
       setError(err.message || 'Search failed')
       setPosts([])
       setProfiles([])
+      setPagination(null)
     }
 
     setLoading(false)
   }
 
+  const canGoBack = offset > 0
+  const canGoNext = pagination?.hasMore ?? false
+
+  const loadPage = async (nextOffset) => {
+    setLoading(true)
+    setError(null)
+
+    try {
+      const memoDb = new MemoDb()
+      const page = new SearchPage({ memoDb })
+      page.setQuery(query)
+      const result = await page.submit({ limit: PAGE_SIZE, offset: nextOffset })
+      setPosts(result.posts || [])
+      setProfiles(result.profiles || [])
+      setPagination(result.pagination || null)
+      setOffset(nextOffset)
+    } catch (err) {
+      setError(err.message || 'Search failed')
+    }
+
+    setLoading(false)
+  }
+
+  const handlePreviousPage = () => {
+    loadPage(Math.max(0, offset - PAGE_SIZE))
+  }
+
+  const handleNextPage = () => {
+    loadPage(offset + PAGE_SIZE)
+  }
+
   return (
     <Container className='search-page'>
       <Row className='justify-content-center'>
@@ -123,6 +161,26 @@ function Search (props) {
           )}
 
           {!loading && <SearchResults posts={posts} profiles={profiles} searched={searched} />}
+
+          {!loading && searched && (pagination || offset > 0) && (
+            <div className='search-pagination mt-3'>
+              <Button
+                variant='outline-dark'
+                onClick={handlePreviousPage}
+                disabled={!canGoBack}
+              >
+                Previous
+              </Button>
+
+              <Button
+                variant='outline-dark'
+                onClick={handleNextPage}
+                disabled={!canGoNext}
+              >
+                Next
+              </Button>
+            </div>
+          )}
         </Col>
       </Row>
     </Container>

psf-memo-client/src/components/app-body/topic-feed/index.js

@@ -24,7 +24,7 @@ import { byteLength } from '../../../services/utf8'
 import '../../../App.css'
 import '../../post-feed/post-feed.css'
 
-const PAGE_SIZE = 100
+const PAGE_SIZE = 50
 
 function TopicFeed (props) {
   const { appData } = props

psf-memo-client/src/services/following-feed-page.js

@@ -22,7 +22,7 @@ class FollowingFeedPage {
     return this.wallet?.walletInfo?.cashAddress || null
   }
 
-  async load ({ limit = 100, offset = 0 } = {}) {
+  async load ({ limit = 50, offset = 0 } = {}) {
     if (!this.memoDb) {
       throw new Error('Following feed page requires a memo db client.')
     }
@@ -54,5 +54,5 @@ FollowingFeedPage.FOLLOWING_FEED_PATH = FOLLOWING_FEED_PATH
 module.exports = FollowingFeedPage
 
 // mutate4javascript-manifest-begin
-// {"version":1,"tested_at":"2026-09-02T19:04:51.797Z","module_hash":"7754a521f2e17d3d290ecca2dd644364ec96585a123a9e5601154d85c3a60548","functions":[{"id":"func/FollowingFeedPage.constructor","name":"FollowingFeedPage.constructor","line":13,"end_line":19,"hash":"015246f47e903cfc98029de709dbf4b0c0a47999c2ad737acfa3f46c17d66381"},{"id":"func/FollowingFeedPage.getMyAddress","name":"FollowingFeedPage.getMyAddress","line":21,"end_line":23,"hash":"3e5d4ac4df379300933a772020528b4ecf4ed83c7386a066f5c270df81adcddd"},{"id":"func/FollowingFeedPage.load","name":"FollowingFeedPage.load","line":25,"end_line":41,"hash":"c8e64d2a4fcd714aff9fc23893e1d313c63c0c6b8048149d4d89772772938cca"},{"id":"func/FollowingFeedPage.canLoadMore","name":"FollowingFeedPage.canLoadMore","line":43,"end_line":45,"hash":"634983bcc6bbe560daad8326db0dd4bf31d5cb9e45c40112565351dceaf8e5d5"},{"id":"func/FollowingFeedPage.getPost","name":"FollowingFeedPage.getPost","line":47,"end_line":49,"hash":"1a6ae1a02b0f79b5b62a2b2324a5f1edbd743bec004fe73cfef7970bead56885"}]}
+// {"version":1,"tested_at":"2026-09-04T17:10:16.507Z","module_hash":"e30a0befd791a2a6adfc48239339ec7655dfdce56699653d4c7d85b6a39cedfd","functions":[{"id":"func/FollowingFeedPage.constructor","name":"FollowingFeedPage.constructor","line":13,"end_line":19,"hash":"015246f47e903cfc98029de709dbf4b0c0a47999c2ad737acfa3f46c17d66381"},{"id":"func/FollowingFeedPage.getMyAddress","name":"FollowingFeedPage.getMyAddress","line":21,"end_line":23,"hash":"3e5d4ac4df379300933a772020528b4ecf4ed83c7386a066f5c270df81adcddd"},{"id":"func/FollowingFeedPage.load","name":"FollowingFeedPage.load","line":25,"end_line":41,"hash":"f61377da944c0bc716d03ef0ad97c4c62d0aeb1b2b47788093ededa7f58545f5"},{"id":"func/FollowingFeedPage.canLoadMore","name":"FollowingFeedPage.canLoadMore","line":43,"end_line":45,"hash":"634983bcc6bbe560daad8326db0dd4bf31d5cb9e45c40112565351dceaf8e5d5"},{"id":"func/FollowingFeedPage.getPost","name":"FollowingFeedPage.getPost","line":47,"end_line":49,"hash":"1a6ae1a02b0f79b5b62a2b2324a5f1edbd743bec004fe73cfef7970bead56885"}]}
 // mutate4javascript-manifest-end

psf-memo-client/src/services/memo-db.js

@@ -10,11 +10,11 @@ class MemoDb {
     this.axios = axios
   }
 
-  async getRecentProfiles ({ limit = 100, offset = 0 } = {}) {
+  async getRecentProfiles ({ limit = 50, offset = 0 } = {}) {
     return this.getRecent('/profile/recent', 'getRecentProfiles', { limit, offset })
   }
 
-  async getRecentPosts ({ limit = 100, offset = 0 } = {}) {
+  async getRecentPosts ({ limit = 50, offset = 0 } = {}) {
     return this.getRecent('/posts/recent', 'getRecentPosts', { limit, offset })
   }
 
@@ -58,7 +58,7 @@ class MemoDb {
     return this._getList(`/topics/${encodeURIComponent(room)}/followers`, 'getTopicFollowers', 'followers')
   }
 
-  async search (q, { limit = 100, offset = 0 } = {}) {
+  async search (q, { limit = 50, offset = 0 } = {}) {
     try {
       const result = await this.axios.get(`${config.backend}/search`, {
         params: { q, limit, offset }
@@ -108,7 +108,7 @@ class MemoDb {
   }
 
   // GET a paginated resource page at a full path.
-  async getPage (path, name, { limit = 100, offset = 0 } = {}) {
+  async getPage (path, name, { limit = 50, offset = 0 } = {}) {
     try {
       const result = await this.axios.get(`${config.backend}${path}`, {
         params: { limit, offset }

psf-memo-client/src/services/notifications-page.js

@@ -22,7 +22,7 @@ class NotificationsPage {
     return this.wallet?.walletInfo?.cashAddress || null
   }
 
-  async load ({ limit = 100, offset = 0 } = {}) {
+  async load ({ limit = 50, offset = 0 } = {}) {
     if (!this.memoDb) {
       throw new Error('Notifications page requires a memo db client.')
     }
@@ -58,5 +58,5 @@ NotificationsPage.NOTIFICATIONS_PATH = NOTIFICATIONS_PATH
 module.exports = NotificationsPage
 
 // mutate4javascript-manifest-begin
-// {"version":1,"tested_at":"2026-09-02T20:18:43.400Z","module_hash":"647bc4fca66811725670506e32f4db2a94b387b4d318a658a925490607b2caa7","functions":[{"id":"func/NotificationsPage.constructor","name":"NotificationsPage.constructor","line":13,"end_line":19,"hash":"52eca9540d0f0c524cd8b2c6c2a80c37cc1769c2a109bae7c97f080bede56130"},{"id":"func/NotificationsPage.getMyAddress","name":"NotificationsPage.getMyAddress","line":21,"end_line":23,"hash":"3e5d4ac4df379300933a772020528b4ecf4ed83c7386a066f5c270df81adcddd"},{"id":"func/NotificationsPage.load","name":"NotificationsPage.load","line":25,"end_line":45,"hash":"99ce6b9176f964e8794325b59c7e67318514b64388117df930e5addb8ece7ea5"},{"id":"func/NotificationsPage.canLoadMore","name":"NotificationsPage.canLoadMore","line":47,"end_line":49,"hash":"634983bcc6bbe560daad8326db0dd4bf31d5cb9e45c40112565351dceaf8e5d5"},{"id":"func/NotificationsPage.getNotification","name":"NotificationsPage.getNotification","line":51,"end_line":53,"hash":"d01238c7fddb85e9ca7427d512c828ec6524657feb1156a820516641ed27105c"}]}
+// {"version":1,"tested_at":"2026-09-04T17:20:15.460Z","module_hash":"302d668c6360824911c04786d5337002fe2870aed064fdb3ba85b3944e6c4f7b","functions":[{"id":"func/NotificationsPage.constructor","name":"NotificationsPage.constructor","line":13,"end_line":19,"hash":"52eca9540d0f0c524cd8b2c6c2a80c37cc1769c2a109bae7c97f080bede56130"},{"id":"func/NotificationsPage.getMyAddress","name":"NotificationsPage.getMyAddress","line":21,"end_line":23,"hash":"3e5d4ac4df379300933a772020528b4ecf4ed83c7386a066f5c270df81adcddd"},{"id":"func/NotificationsPage.load","name":"NotificationsPage.load","line":25,"end_line":45,"hash":"d99ba2df1db799b969e7fc4b8e3f0964c84f973d92e048df97c361e4659b0c9d"},{"id":"func/NotificationsPage.canLoadMore","name":"NotificationsPage.canLoadMore","line":47,"end_line":49,"hash":"634983bcc6bbe560daad8326db0dd4bf31d5cb9e45c40112565351dceaf8e5d5"},{"id":"func/NotificationsPage.getNotification","name":"NotificationsPage.getNotification","line":51,"end_line":53,"hash":"d01238c7fddb85e9ca7427d512c828ec6524657feb1156a820516641ed27105c"}]}
 // mutate4javascript-manifest-end

psf-memo-client/src/services/paginated-page.js

@@ -0,0 +1,41 @@
+/*
+  Shared base for simple paginated page controllers.
+
+  A paginated page loads a single list from a MemoDb method, stores the list
+  and its pagination, and reports whether more items can be loaded. Subclasses
+  supply the memoDb method name, the result list field, and the error message
+  for the missing-client guard, then add their own item finder.
+*/
+
+class PaginatedPage {
+  constructor (deps = {}, { listField, loadMethod, errorMessage }) {
+    this.memoDb = deps.memoDb || null
+    this[listField] = []
+    this.pagination = null
+    this._listField = listField
+    this._loadMethod = loadMethod
+    this._errorMessage = errorMessage
+  }
+
+  async load ({ limit = 50, offset = 0 } = {}) {
+    if (!this.memoDb) {
+      throw new Error(this._errorMessage)
+    }
+
+    const data = await this.memoDb[this._loadMethod]({ limit, offset })
+    this[this._listField] = data[this._listField] || []
+    this.pagination = data.pagination || null
+
+    return { [this._listField]: this[this._listField], pagination: this.pagination }
+  }
+
+  canLoadMore () {
+    return this.pagination?.hasMore ?? false
+  }
+}
+
+module.exports = PaginatedPage
+
+// mutate4javascript-manifest-begin
+// {"version":1,"tested_at":"2026-09-04T17:08:23.730Z","module_hash":"6ba99f826fd1a2bd4a090bedaabe3a8497d4ebe3694138b26090fa5c2f1f6efb","functions":[{"id":"func/PaginatedPage.constructor","name":"PaginatedPage.constructor","line":11,"end_line":18,"hash":"14d764e7220271146f33020326072e2ebb653e1a1372360348e552056d21e0c8"},{"id":"func/PaginatedPage.load","name":"PaginatedPage.load","line":20,"end_line":30,"hash":"b9c43d761b25e202dfbc16beee7ab90b06ee75dcb9ba0799ee014d513b2e9a5c"},{"id":"func/PaginatedPage.canLoadMore","name":"PaginatedPage.canLoadMore","line":32,"end_line":34,"hash":"634983bcc6bbe560daad8326db0dd4bf31d5cb9e45c40112565351dceaf8e5d5"}]}
+// mutate4javascript-manifest-end

psf-memo-client/src/services/profile-page.js

@@ -26,7 +26,7 @@ class ProfilePage {
     this.muteState = null
   }
 
-  async load ({ limit = 100, offset = 0 } = {}) {
+  async load ({ limit = 50, offset = 0 } = {}) {
     this._assertReady()
 
     const data = await this.memoDb.getPostsByAddr(this.addr, { limit, offset })
@@ -123,6 +123,10 @@ class ProfilePage {
   getPost (txid) {
     return this.posts.find((post) => post.txid === txid) || null
   }
+
+  canLoadMore () {
+    return this.pagination?.hasMore ?? false
+  }
 }
 
 ProfilePage.PROFILE_PATH_PREFIX = PROFILE_PATH_PREFIX
@@ -130,5 +134,5 @@ ProfilePage.PROFILE_PATH_PREFIX = PROFILE_PATH_PREFIX
 module.exports = ProfilePage
 
 // mutate4javascript-manifest-begin
-// {"version":1,"tested_at":"2026-08-29T03:10:07.663Z","module_hash":"be54fde7e97be7c83df6680f33b31151f5f2f91835ba404705c988c0baa84e6a","functions":[{"id":"func/ProfilePage.constructor","name":"ProfilePage.constructor","line":17,"end_line":27,"hash":"2a9265aa29bd66a11c2a627ecad5149b093f53b0892b848bef09ac2b949a2ee2"},{"id":"func/ProfilePage.load","name":"ProfilePage.load","line":29,"end_line":45,"hash":"c57316a8a92684b9506f340122361f69a7361f0190c4e8a0e7816a11de2db089"},{"id":"func/ProfilePage._assertReady","name":"ProfilePage._assertReady","line":48,"end_line":55,"hash":"e575f98fa1b492b4c11ae5275459d9f9996df4c566b84c7cae91413c72a02f38"},{"id":"func/ProfilePage._loadState","name":"ProfilePage._loadState","line":59,"end_line":64,"hash":"ab0376720ac75e6fd66d437fbb47a53176d76f681cb13b8794249f2a586549e8"},{"id":"func/ProfilePage.isOwnProfile","name":"ProfilePage.isOwnProfile","line":66,"end_line":68,"hash":"4d149bfe7b183b5d38d496c0a8126d22bd9a919e684f375d66e2c8c1348dd773"},{"id":"func/ProfilePage.canFollow","name":"ProfilePage.canFollow","line":70,"end_line":72,"hash":"0bc2c0c17991d8f1a1d18fba29c901e42633b7cf2c2c8b5747a49e5832d7001d"},{"id":"func/ProfilePage.isFollowing","name":"ProfilePage.isFollowing","line":74,"end_line":76,"hash":"9fc0470db7ffea2da96d2dbbdceff55562e1f7e84377fbb0e8b60d53cc723b40"},{"id":"func/ProfilePage.follow","name":"ProfilePage.follow","line":78,"end_line":80,"hash":"7674b789a9d3c48e0f7a6e553613bac99b2f38449fcdd17faa3c6d7cd2773bdd"},{"id":"func/ProfilePage.unfollow","name":"ProfilePage.unfollow","line":82,"end_line":84,"hash":"69d278b09da1f284be6adacb7264f9c06ac71c42f8e8f1baf9e34d5b24a891fb"},{"id":"func/ProfilePage._setFollowState","name":"ProfilePage._setFollowState","line":87,"end_line":89,"hash":"6cd937862bd6bf18d63fe767724b02ca23d1dc54f71ede23b84b9bde2930200b"},{"id":"func/ProfilePage.canMute","name":"ProfilePage.canMute","line":91,"end_line":93,"hash":"0076ea0e688df292dbe6bcde370aa32937cf7dad674e2168c3395d41b63850af"},{"id":"func/ProfilePage.isMuting","name":"ProfilePage.isMuting","line":95,"end_line":97,"hash":"c4fe9ea0501b7349da39321afd074e7ae48c2c1f2e0d1cfafafbf57f8a05c754"},{"id":"func/ProfilePage.mute","name":"ProfilePage.mute","line":99,"end_line":101,"hash":"228ff6bb19d81e92f99090b6242043b216b9ff8dd9f7aa49d4e50521b1270c26"},{"id":"func/ProfilePage.unmute","name":"ProfilePage.unmute","line":103,"end_line":105,"hash":"ea3e7cbf5a02898ea2a924fb42b683ef50a7a9985ac9118dd404e46fcaa78ed1"},{"id":"func/ProfilePage._setMuteState","name":"ProfilePage._setMuteState","line":108,"end_line":110,"hash":"721536335442a539a8ec7700d9db79abd18cfc24ed451fcd29e198f531d0896f"},{"id":"func/ProfilePage._setState","name":"ProfilePage._setState","line":114,"end_line":121,"hash":"8e01237a2cf48ca49a5c480d94a89cd6fbe3911bd476b17ca826a21bcbd60f4c"},{"id":"func/ProfilePage.getPost","name":"ProfilePage.getPost","line":123,"end_line":125,"hash":"1a6ae1a02b0f79b5b62a2b2324a5f1edbd743bec004fe73cfef7970bead56885"}]}
+// {"version":1,"tested_at":"2026-09-04T17:36:49.028Z","module_hash":"0a1de2d4dc847a50df7d6d1bec9899d61dbe0856a069651f1794384af66aede9","functions":[{"id":"func/ProfilePage.constructor","name":"ProfilePage.constructor","line":17,"end_line":27,"hash":"2a9265aa29bd66a11c2a627ecad5149b093f53b0892b848bef09ac2b949a2ee2"},{"id":"func/ProfilePage.load","name":"ProfilePage.load","line":29,"end_line":45,"hash":"d38c4bec56cac83f0df4975852d915bb6bffc4c566cbcca3a933f31b340b6125"},{"id":"func/ProfilePage._assertReady","name":"ProfilePage._assertReady","line":48,"end_line":55,"hash":"e575f98fa1b492b4c11ae5275459d9f9996df4c566b84c7cae91413c72a02f38"},{"id":"func/ProfilePage._loadState","name":"ProfilePage._loadState","line":59,"end_line":64,"hash":"ab0376720ac75e6fd66d437fbb47a53176d76f681cb13b8794249f2a586549e8"},{"id":"func/ProfilePage.isOwnProfile","name":"ProfilePage.isOwnProfile","line":66,"end_line":68,"hash":"4d149bfe7b183b5d38d496c0a8126d22bd9a919e684f375d66e2c8c1348dd773"},{"id":"func/ProfilePage.canFollow","name":"ProfilePage.canFollow","line":70,"end_line":72,"hash":"0bc2c0c17991d8f1a1d18fba29c901e42633b7cf2c2c8b5747a49e5832d7001d"},{"id":"func/ProfilePage.isFollowing","name":"ProfilePage.isFollowing","line":74,"end_line":76,"hash":"9fc0470db7ffea2da96d2dbbdceff55562e1f7e84377fbb0e8b60d53cc723b40"},{"id":"func/ProfilePage.follow","name":"ProfilePage.follow","line":78,"end_line":80,"hash":"7674b789a9d3c48e0f7a6e553613bac99b2f38449fcdd17faa3c6d7cd2773bdd"},{"id":"func/ProfilePage.unfollow","name":"ProfilePage.unfollow","line":82,"end_line":84,"hash":"69d278b09da1f284be6adacb7264f9c06ac71c42f8e8f1baf9e34d5b24a891fb"},{"id":"func/ProfilePage._setFollowState","name":"ProfilePage._setFollowState","line":87,"end_line":89,"hash":"6cd937862bd6bf18d63fe767724b02ca23d1dc54f71ede23b84b9bde2930200b"},{"id":"func/ProfilePage.canMute","name":"ProfilePage.canMute","line":91,"end_line":93,"hash":"0076ea0e688df292dbe6bcde370aa32937cf7dad674e2168c3395d41b63850af"},{"id":"func/ProfilePage.isMuting","name":"ProfilePage.isMuting","line":95,"end_line":97,"hash":"c4fe9ea0501b7349da39321afd074e7ae48c2c1f2e0d1cfafafbf57f8a05c754"},{"id":"func/ProfilePage.mute","name":"ProfilePage.mute","line":99,"end_line":101,"hash":"228ff6bb19d81e92f99090b6242043b216b9ff8dd9f7aa49d4e50521b1270c26"},{"id":"func/ProfilePage.unmute","name":"ProfilePage.unmute","line":103,"end_line":105,"hash":"ea3e7cbf5a02898ea2a924fb42b683ef50a7a9985ac9118dd404e46fcaa78ed1"},{"id":"func/ProfilePage._setMuteState","name":"ProfilePage._setMuteState","line":108,"end_line":110,"hash":"721536335442a539a8ec7700d9db79abd18cfc24ed451fcd29e198f531d0896f"},{"id":"func/ProfilePage._setState","name":"ProfilePage._setState","line":114,"end_line":121,"hash":"8e01237a2cf48ca49a5c480d94a89cd6fbe3911bd476b17ca826a21bcbd60f4c"},{"id":"func/ProfilePage.getPost","name":"ProfilePage.getPost","line":123,"end_line":125,"hash":"1a6ae1a02b0f79b5b62a2b2324a5f1edbd743bec004fe73cfef7970bead56885"},{"id":"func/ProfilePage.canLoadMore","name":"ProfilePage.canLoadMore","line":127,"end_line":129,"hash":"634983bcc6bbe560daad8326db0dd4bf31d5cb9e45c40112565351dceaf8e5d5"}]}
 // mutate4javascript-manifest-end

psf-memo-client/src/services/recent-feed-page.js

@@ -10,25 +10,17 @@
   boundary.
 */
 
+const PaginatedPage = require('./paginated-page')
+
 const RECENT_FEED_PATH = '/posts/recent'
 
-class RecentFeedPage {
+class RecentFeedPage extends PaginatedPage {
   constructor (deps = {}) {
-    this.memoDb = deps.memoDb || null
-    this.posts = []
-    this.pagination = null
-  }
-
-  async load ({ limit = 100, offset = 0 } = {}) {
-    if (!this.memoDb) {
-      throw new Error('Recent feed page requires a memo db client.')
-    }
-
-    const data = await this.memoDb.getRecentPosts({ limit, offset })
-    this.posts = data.posts || []
-    this.pagination = data.pagination || null
-
-    return { posts: this.posts, pagination: this.pagination }
+    super(deps, {
+      listField: 'posts',
+      loadMethod: 'getRecentPosts',
+      errorMessage: 'Recent feed page requires a memo db client.'
+    })
   }
 
   getPost (txid) {
@@ -41,5 +33,5 @@ RecentFeedPage.RECENT_FEED_PATH = RECENT_FEED_PATH
 module.exports = RecentFeedPage
 
 // mutate4javascript-manifest-begin
-// {"version":1,"tested_at":"2026-08-27T03:38:52.144Z","module_hash":"e2ee3beff9079c7f93d29043b1428c271fbd1a2b64f2635fbc2cc06fb52a3aab","functions":[{"id":"func/RecentFeedPage.constructor","name":"RecentFeedPage.constructor","line":16,"end_line":20,"hash":"0eb6faf1dfd73ad95b210473ab82fdae513ff1570e401820645661881a2f8d4b"},{"id":"func/RecentFeedPage.load","name":"RecentFeedPage.load","line":22,"end_line":32,"hash":"96e8f2c77aadf98e3a9e71e1f0f6ce98a3e47dd828ffb4626916f56ca32ed137"},{"id":"func/RecentFeedPage.getPost","name":"RecentFeedPage.getPost","line":34,"end_line":36,"hash":"1a6ae1a02b0f79b5b62a2b2324a5f1edbd743bec004fe73cfef7970bead56885"}]}
+// {"version":1,"tested_at":"2026-09-04T17:09:10.548Z","module_hash":"9c0c48d7b21d24fcf640bf461b9798b2377097687c433be64776495ab7166601","functions":[{"id":"func/RecentFeedPage.constructor","name":"RecentFeedPage.constructor","line":18,"end_line":24,"hash":"78adbb7be7ccdc136fb6bb9201a8447b0a484f525a7426f25f281b0ecd78c0ae"},{"id":"func/RecentFeedPage.getPost","name":"RecentFeedPage.getPost","line":26,"end_line":28,"hash":"1a6ae1a02b0f79b5b62a2b2324a5f1edbd743bec004fe73cfef7970bead56885"}]}
 // mutate4javascript-manifest-end

psf-memo-client/src/services/recent-profiles-page.js

@@ -0,0 +1,33 @@
+/*
+  Recent Profiles Page behavior: load and display the most recent Memo profiles.
+
+  This is the testable controller behind the React "Recent Profiles" page. It
+  wraps the MemoDb client and exposes the loaded profiles and pagination so the
+  view can render them.
+*/
+
+const PaginatedPage = require('./paginated-page')
+
+const RECENT_PROFILES_PATH = '/profile/recent'
+
+class RecentProfilesPage extends PaginatedPage {
+  constructor (deps = {}) {
+    super(deps, {
+      listField: 'profiles',
+      loadMethod: 'getRecentProfiles',
+      errorMessage: 'Recent profiles page requires a memo db client.'
+    })
+  }
+
+  getProfile (addr) {
+    return this.profiles.find((profile) => profile.addr === addr) || null
+  }
+}
+
+RecentProfilesPage.RECENT_PROFILES_PATH = RECENT_PROFILES_PATH
+
+module.exports = RecentProfilesPage
+
+// mutate4javascript-manifest-begin
+// {"version":1,"tested_at":"2026-09-04T17:09:41.844Z","module_hash":"8a305e7c3c74e6ef33e57da9a0c1f3d3e0eff6ff2d6da99d1383d93874745b65","functions":[{"id":"func/RecentProfilesPage.constructor","name":"RecentProfilesPage.constructor","line":14,"end_line":20,"hash":"01a7876c30597e8eb8e37003290b8a9c9db2d3f2bc7305104e1b02659cc413c5"},{"id":"func/RecentProfilesPage.getProfile","name":"RecentProfilesPage.getProfile","line":22,"end_line":24,"hash":"c93f06a279f8976938fc8b91ce24e9e742c700ac6ff271328192dba9140ae195"}]}
+// mutate4javascript-manifest-end

psf-memo-client/src/services/search-page.js

@@ -23,7 +23,7 @@ class SearchPage {
     return this
   }
 
-  async submit ({ limit = 100, offset = 0 } = {}) {
+  async submit ({ limit = 50, offset = 0 } = {}) {
     if (!this.memoDb) {
       throw new Error('Search page requires a memo db client.')
     }
@@ -47,6 +47,10 @@ class SearchPage {
   getProfile (addr) {
     return this.profiles.find((profile) => profile.addr === addr) || null
   }
+
+  canLoadMore () {
+    return this.pagination?.hasMore ?? false
+  }
 }
 
 SearchPage.SEARCH_PATH = SEARCH_PATH
@@ -54,5 +58,5 @@ SearchPage.SEARCH_PATH = SEARCH_PATH
 module.exports = SearchPage
 
 // mutate4javascript-manifest-begin
-// {"version":1,"tested_at":"2026-08-29T15:29:31.910Z","module_hash":"5ff867161b6e0af82435936924bfc3f2843e94b60354bbb39833714adb2a7448","functions":[{"id":"func/SearchPage.constructor","name":"SearchPage.constructor","line":12,"end_line":19,"hash":"6e48e42aae340ec24012bd86529d4493664e896d0d86a0bcfaf75e813d196da7"},{"id":"func/SearchPage.setQuery","name":"SearchPage.setQuery","line":21,"end_line":24,"hash":"45cdbb5a6cc4329f2ae2918130de995482f5587efdfa8bf48191672c0917cab3"},{"id":"func/SearchPage.submit","name":"SearchPage.submit","line":26,"end_line":41,"hash":"2e1394b99ec30f3b0fb867ab45c07c439c0d71ecef868dd37bfd7af11c584a2a"},{"id":"func/SearchPage.getPost","name":"SearchPage.getPost","line":43,"end_line":45,"hash":"1a6ae1a02b0f79b5b62a2b2324a5f1edbd743bec004fe73cfef7970bead56885"},{"id":"func/SearchPage.getProfile","name":"SearchPage.getProfile","line":47,"end_line":49,"hash":"c93f06a279f8976938fc8b91ce24e9e742c700ac6ff271328192dba9140ae195"}]}
+// {"version":1,"tested_at":"2026-09-04T17:38:44.927Z","module_hash":"0f319e8a75381449e4f3ff4077d58e963a21d186fa2fd2831b69305d7471b567","functions":[{"id":"func/SearchPage.constructor","name":"SearchPage.constructor","line":12,"end_line":19,"hash":"6e48e42aae340ec24012bd86529d4493664e896d0d86a0bcfaf75e813d196da7"},{"id":"func/SearchPage.setQuery","name":"SearchPage.setQuery","line":21,"end_line":24,"hash":"45cdbb5a6cc4329f2ae2918130de995482f5587efdfa8bf48191672c0917cab3"},{"id":"func/SearchPage.submit","name":"SearchPage.submit","line":26,"end_line":41,"hash":"a048678628fd9fa69c25138093a020ea6e17f8ccc891e97a2088daf573d7945d"},{"id":"func/SearchPage.getPost","name":"SearchPage.getPost","line":43,"end_line":45,"hash":"1a6ae1a02b0f79b5b62a2b2324a5f1edbd743bec004fe73cfef7970bead56885"},{"id":"func/SearchPage.getProfile","name":"SearchPage.getProfile","line":47,"end_line":49,"hash":"c93f06a279f8976938fc8b91ce24e9e742c700ac6ff271328192dba9140ae195"},{"id":"func/SearchPage.canLoadMore","name":"SearchPage.canLoadMore","line":51,"end_line":53,"hash":"634983bcc6bbe560daad8326db0dd4bf31d5cb9e45c40112565351dceaf8e5d5"}]}
 // mutate4javascript-manifest-end

psf-memo-client/src/services/topic-feed-page.js

@@ -18,7 +18,7 @@ class TopicFeedPage {
     this.followers = []
   }
 
-  async load ({ limit = 100, offset = 0 } = {}) {
+  async load ({ limit = 50, offset = 0 } = {}) {
     if (!this.memoDb) {
       throw new Error('Topic feed page requires a memo db client.')
     }
@@ -81,6 +81,10 @@ class TopicFeedPage {
   getPost (txid) {
     return this.posts.find((post) => post.txid === txid) || null
   }
+
+  canLoadMore () {
+    return this.pagination?.hasMore ?? false
+  }
 }
 
 TopicFeedPage.topicFeedPath = function (room) {
@@ -90,5 +94,5 @@ TopicFeedPage.topicFeedPath = function (room) {
 module.exports = TopicFeedPage
 
 // mutate4javascript-manifest-begin
-// {"version":1,"tested_at":"2026-08-28T18:24:48.504Z","module_hash":"236ec55785bb69ac64c4a610ef4a5f8a8b03fae7b717d79c14c7fd2e755775e6","functions":[{"id":"func/TopicFeedPage.constructor","name":"TopicFeedPage.constructor","line":10,"end_line":19,"hash":"e6ee69c9caa13fcc05c7739fc185767f906c907a3031cf2c02abaab9220daca5"},{"id":"func/TopicFeedPage.load","name":"TopicFeedPage.load","line":21,"end_line":36,"hash":"ef85636d06f2b1eb6afd19b276bd8b9728ee35122d4424b3faf468de4a0e23a4"},{"id":"func/TopicFeedPage._loadFollowState","name":"TopicFeedPage._loadFollowState","line":38,"end_line":43,"hash":"d1984bb94b4f2e7c98c39524fc2fd0080dc5cff10e775a17c68856c2e3a2c249"},{"id":"func/TopicFeedPage._loadFollowers","name":"TopicFeedPage._loadFollowers","line":45,"end_line":47,"hash":"8b19d3623b4a872f4abe879ceda7e4018edf60efff03d037fe795b6558222b37"},{"id":"func/TopicFeedPage.canFollow","name":"TopicFeedPage.canFollow","line":49,"end_line":51,"hash":"2f82c2096bf6f542b60cf20d82cd70f366652fcce3a38ff14e82164d5ee86cad"},{"id":"func/TopicFeedPage.isFollowing","name":"TopicFeedPage.isFollowing","line":53,"end_line":55,"hash":"9fc0470db7ffea2da96d2dbbdceff55562e1f7e84377fbb0e8b60d53cc723b40"},{"id":"func/TopicFeedPage.follow","name":"TopicFeedPage.follow","line":57,"end_line":59,"hash":"7674b789a9d3c48e0f7a6e553613bac99b2f38449fcdd17faa3c6d7cd2773bdd"},{"id":"func/TopicFeedPage.unfollow","name":"TopicFeedPage.unfollow","line":61,"end_line":63,"hash":"69d278b09da1f284be6adacb7264f9c06ac71c42f8e8f1baf9e34d5b24a891fb"},{"id":"func/TopicFeedPage._setFollowState","name":"TopicFeedPage._setFollowState","line":65,"end_line":79,"hash":"698f22cdfc2c088446c732cf01864d8859b299e066c199eb542bc965413f48b4"},{"id":"func/TopicFeedPage.getPost","name":"TopicFeedPage.getPost","line":81,"end_line":83,"hash":"1a6ae1a02b0f79b5b62a2b2324a5f1edbd743bec004fe73cfef7970bead56885"}]}
+// {"version":1,"tested_at":"2026-09-04T17:39:50.423Z","module_hash":"fe12e7e5411d6dfbfcfc08d2526692abacf224fc2626d108658f9dee7b664914","functions":[{"id":"func/TopicFeedPage.constructor","name":"TopicFeedPage.constructor","line":10,"end_line":19,"hash":"e6ee69c9caa13fcc05c7739fc185767f906c907a3031cf2c02abaab9220daca5"},{"id":"func/TopicFeedPage.load","name":"TopicFeedPage.load","line":21,"end_line":36,"hash":"db9b1cf8bde02a61a16c9444b64e39c41519a9db1e77a4065229b24d6b2428b5"},{"id":"func/TopicFeedPage._loadFollowState","name":"TopicFeedPage._loadFollowState","line":38,"end_line":43,"hash":"d1984bb94b4f2e7c98c39524fc2fd0080dc5cff10e775a17c68856c2e3a2c249"},{"id":"func/TopicFeedPage._loadFollowers","name":"TopicFeedPage._loadFollowers","line":45,"end_line":47,"hash":"8b19d3623b4a872f4abe879ceda7e4018edf60efff03d037fe795b6558222b37"},{"id":"func/TopicFeedPage.canFollow","name":"TopicFeedPage.canFollow","line":49,"end_line":51,"hash":"2f82c2096bf6f542b60cf20d82cd70f366652fcce3a38ff14e82164d5ee86cad"},{"id":"func/TopicFeedPage.isFollowing","name":"TopicFeedPage.isFollowing","line":53,"end_line":55,"hash":"9fc0470db7ffea2da96d2dbbdceff55562e1f7e84377fbb0e8b60d53cc723b40"},{"id":"func/TopicFeedPage.follow","name":"TopicFeedPage.follow","line":57,"end_line":59,"hash":"7674b789a9d3c48e0f7a6e553613bac99b2f38449fcdd17faa3c6d7cd2773bdd"},{"id":"func/TopicFeedPage.unfollow","name":"TopicFeedPage.unfollow","line":61,"end_line":63,"hash":"69d278b09da1f284be6adacb7264f9c06ac71c42f8e8f1baf9e34d5b24a891fb"},{"id":"func/TopicFeedPage._setFollowState","name":"TopicFeedPage._setFollowState","line":65,"end_line":79,"hash":"698f22cdfc2c088446c732cf01864d8859b299e066c199eb542bc965413f48b4"},{"id":"func/TopicFeedPage.getPost","name":"TopicFeedPage.getPost","line":81,"end_line":83,"hash":"1a6ae1a02b0f79b5b62a2b2324a5f1edbd743bec004fe73cfef7970bead56885"},{"id":"func/TopicFeedPage.canLoadMore","name":"TopicFeedPage.canLoadMore","line":85,"end_line":87,"hash":"634983bcc6bbe560daad8326db0dd4bf31d5cb9e45c40112565351dceaf8e5d5"}]}
 // mutate4javascript-manifest-end

psf-memo-client/test/property/paginated-page.property.test.js

@@ -0,0 +1,112 @@
+/*
+  Property tests for the shared PaginatedPage base controller.
+
+  The unit tests probe a few fixed pagination shapes. These properties cover
+  the load/`canLoadMore`/lookup invariants over broad random inputs so they
+  hold everywhere for the recent feed and recent profiles pages:
+
+    - has more: canLoadMore always mirrors pagination.hasMore.
+    - forwarding: the load limit and offset forwarded to the memo-db client
+      match exactly what the caller requested.
+    - lookup: the item finder returns a loaded item by key and null otherwise.
+*/
+
+'use strict'
+
+const test = require('node:test')
+const { seededRandom, forAll, intGen } = require('./harness')
+const PaginatedPage = require('../../src/services/paginated-page')
+
+const rng = seededRandom(20260904)
+
+// A minimal concrete subclass exercising the shared base logic.
+class TestPage extends PaginatedPage {
+  constructor (deps = {}) {
+    super(deps, {
+      listField: 'items',
+      loadMethod: 'getItems',
+      errorMessage: 'Test page requires a memo db client.'
+    })
+  }
+
+  getItem (key) {
+    return this.items.find((item) => item.key === key) || null
+  }
+}
+
+function makeMemoDb (items, pagination) {
+  return {
+    async getItems ({ limit, offset }) {
+      return { items, pagination }
+    }
+  }
+}
+
+function fixtureGen () {
+  return () => {
+    const n = intGen(rng, 0, 8)()
+    const items = []
+    for (let i = 0; i < n; i++) {
+      items.push({ key: 'item-' + i, text: 'value ' + i })
+    }
+    return {
+      items,
+      pagination: { hasMore: rng() < 0.5 },
+      limit: intGen(rng, 1, 100)(),
+      offset: intGen(rng, 0, 200)()
+    }
+  }
+}
+
+test('canLoadMore always mirrors pagination.hasMore', async () => {
+  await forAll(
+    fixtureGen(),
+    async ({ items, pagination, limit, offset }) => {
+      const page = new TestPage({ memoDb: makeMemoDb(items, pagination) })
+      await page.load({ limit, offset })
+
+      return page.canLoadMore() === (pagination.hasMore === true) &&
+        page.pagination.hasMore === pagination.hasMore
+    },
+    { label: 'paginated canLoadMore mirrors hasMore' }
+  )
+})
+
+test('load forwards exactly the requested limit and offset to the memo-db client', async () => {
+  await forAll(
+    fixtureGen(),
+    async ({ items, pagination, limit, offset }) => {
+      const calls = []
+      const memoDb = {
+        async getItems (params) {
+          calls.push(params)
+          return { items, pagination }
+        }
+      }
+      const page = new TestPage({ memoDb })
+      await page.load({ limit, offset })
+
+      return calls.length === 1 &&
+        calls[0].limit === limit &&
+        calls[0].offset === offset
+    },
+    { label: 'paginated load forwards limit and offset' }
+  )
+})
+
+test('getItem returns a loaded item by key, otherwise null', async () => {
+  await forAll(
+    fixtureGen(),
+    async ({ items, pagination, limit, offset }) => {
+      const page = new TestPage({ memoDb: makeMemoDb(items, pagination) })
+      await page.load({ limit, offset })
+
+      if (items.length === 0) return true
+
+      const any = page.getItem(items[0].key)
+      if (!any || any.text !== items[0].text) return false
+      return page.getItem('does-not-exist') === null
+    },
+    { label: 'paginated getItem lookup' }
+  )
+})

psf-memo-client/test/property/youtube-embed.property.test.js

@@ -0,0 +1,119 @@
+/*
+  Property tests for the YouTube embed parser.
+
+  The unit tests probe parsePostText / extractYouTubeVideoId at a few fixed
+  fixtures. These properties pin down the parser's invariants over broad
+  random inputs:
+
+    - Round trip: concatenating the segments (text for text segments, url for
+      youtube segments) reconstructs the original input exactly, including any
+      trailing punctuation that was stripped from a URL.
+    - Every youtube segment carries a non-empty, URL-safe video id.
+    - A URL that is not a youtube.com/watch or youtu.be link never becomes a
+      youtube segment; it stays plain text.
+*/
+
+'use strict'
+
+const test = require('node:test')
+const { seededRandom, forAll, intGen } = require('./harness')
+const {
+  extractYouTubeVideoId,
+  parsePostText
+} = require('../../src/services/youtube-embed')
+
+const rng = seededRandom(20260904)
+
+const WATCH_URL = 'https://www.youtube.com/watch?v=dQw4w9WgXcQ'
+const SHORT_URL = 'https://youtu.be/dQw4w9WgXcQ'
+const OTHER_URL = 'https://example.com/video'
+
+// A pool of tokens used to build random post text. Mixing words, YouTube
+// links, non-YouTube links, and punctuation exercises the parser's URL
+// splitting and trailing-punctuation handling.
+const TOKENS = [
+  'hello', 'world', 'check', 'this', 'out', 'memo', 'post', 'a', 'the',
+  ' ', '  ', '.', ',', '!', '?', ':', ';',
+  WATCH_URL, SHORT_URL, OTHER_URL,
+  'https://example.com/other/path?q=1',
+  'https://youtu.be/',
+  'https://www.youtube.com/watch?v='
+]
+
+function randomText () {
+  const n = intGen(rng, 0, 12)()
+  let text = ''
+  for (let i = 0; i < n; i++) {
+    text += TOKENS[Math.floor(rng() * TOKENS.length)]
+  }
+  return text
+}
+
+function reconstruct (segments) {
+  return segments
+    .map((s) => (s.type === 'youtube' ? s.url : s.text))
+    .join('')
+}
+
+test('parsePostText round-trips: segments reconstruct the original text', async () => {
+  await forAll(
+    () => randomText(),
+    async (text) => {
+      const segments = parsePostText(text)
+      return reconstruct(segments) === text
+    },
+    { label: 'youtube-embed round trip', samples: 2000 }
+  )
+})
+
+test('parsePostText yields only text and youtube segments with valid video ids', async () => {
+  await forAll(
+    () => randomText(),
+    async (text) => {
+      const segments = parsePostText(text)
+      for (const segment of segments) {
+        if (segment.type !== 'text' && segment.type !== 'youtube') return false
+        if (segment.type === 'youtube') {
+          if (!segment.videoId) return false
+          if (!/^[A-Za-z0-9_-]+$/.test(segment.videoId)) return false
+        }
+      }
+      return true
+    },
+    { label: 'youtube-embed segment shape', samples: 2000 }
+  )
+})
+
+test('parsePostText never turns a non-YouTube URL into a youtube segment', async () => {
+  await forAll(
+    () => randomText(),
+    async (text) => {
+      const segments = parsePostText(text)
+      for (const segment of segments) {
+        if (segment.type !== 'youtube') continue
+        // A youtube segment must have come from a youtube.com/watch or
+        // youtu.be URL, so its id must be extractable from that URL.
+        if (extractYouTubeVideoId(segment.url) !== segment.videoId) return false
+      }
+      return true
+    },
+    { label: 'youtube-embed non-youtube stays text', samples: 2000 }
+  )
+})
+
+test('extractYouTubeVideoId round-trips a valid watch and short URL', async () => {
+  await forAll(
+    () => {
+      const id = 'id' + Math.floor(rng() * 1e9).toString(36)
+      const kind = Math.floor(rng() * 2)
+      return kind === 0
+        ? `https://www.youtube.com/watch?v=${id}`
+        : `https://youtu.be/${id}`
+    },
+    async (url) => {
+      const id = url.split('v=')[1] || url.split('youtu.be/')[1]
+      return extractYouTubeVideoId(url) === id
+    },
+    { label: 'youtube-embed id round trip', samples: 2000 }
+  )
+})

psf-memo-client/test/unit/following-feed-page.test.js

@@ -91,7 +91,7 @@ test('load forwards limit and offset to the memo db client', async () => {
   assert.deepEqual(calls, [{ addr: MY_ADDRESS, params: { limit: 10, offset: 20 } }])
 })
 
-test('load defaults limit to 100 and offset to 0', async () => {
+test('load defaults limit to 50 and offset to 0', async () => {
   const calls = []
   const memoDb = {
     async getFollowingFeed (addr, params) {
@@ -103,7 +103,7 @@ test('load defaults limit to 100 and offset to 0', async () => {
 
   await page.load()
 
-  assert.deepEqual(calls, [{ addr: MY_ADDRESS, params: { limit: 100, offset: 0 } }])
+  assert.deepEqual(calls, [{ addr: MY_ADDRESS, params: { limit: 50, offset: 0 } }])
 })
 
 test('load throws when no memo db client is provided', async () => {

psf-memo-client/test/unit/notifications-page.test.js

@@ -79,7 +79,7 @@ test('load forwards limit and offset to the memo db client', async () => {
   assert.deepEqual(calls, [{ addr: MY_ADDRESS, params: { limit: 10, offset: 20 } }])
 })
 
-test('load defaults limit to 100 and offset to 0', async () => {
+test('load defaults limit to 50 and offset to 0', async () => {
   const calls = []
   const memoDb = {
     async getNotifications (addr, params) {
@@ -91,7 +91,7 @@ test('load defaults limit to 100 and offset to 0', async () => {
 
   await page.load()
 
-  assert.deepEqual(calls, [{ addr: MY_ADDRESS, params: { limit: 100, offset: 0 } }])
+  assert.deepEqual(calls, [{ addr: MY_ADDRESS, params: { limit: 50, offset: 0 } }])
 })
 
 test('load throws when no memo db client is provided', async () => {
@@ -128,6 +128,22 @@ test('canLoadMore reflects pagination.hasMore', async () => {
   assert.equal(pageDone.canLoadMore(), false)
 })
 
+test('canLoadMore returns false when pagination is null or missing hasMore', async () => {
+  const pageNull = new NotificationsPage({
+    memoDb: makeMemoDb([], null),
+    wallet: makeWallet()
+  })
+  await pageNull.load()
+  assert.equal(pageNull.canLoadMore(), false)
+
+  const pageEmpty = new NotificationsPage({
+    memoDb: makeMemoDb([], { total: 0 }),
+    wallet: makeWallet()
+  })
+  await pageEmpty.load()
+  assert.equal(pageEmpty.canLoadMore(), false)
+})
+
 test('getNotification returns a loaded notification by txid', async () => {
   const notifications = [{ type: 'follow', txid: 'a'.repeat(64), addr: 'bitcoincash:other' }]
   const page = new NotificationsPage({

psf-memo-client/test/unit/paginated-page.test.js

@@ -0,0 +1,95 @@
+/*
+  Unit tests for the shared PaginatedPage base controller.
+
+  The base class encapsulates the common load / canLoadMore pattern shared by
+  the recent feed and recent profiles page controllers. These tests exercise
+  the base directly, including the null-pagination edge case that the
+  subclass tests do not cover.
+*/
+
+'use strict'
+
+const test = require('node:test')
+const assert = require('node:assert/strict')
+const PaginatedPage = require('../../src/services/paginated-page')
+
+class TestPage extends PaginatedPage {
+  constructor (deps = {}) {
+    super(deps, {
+      listField: 'items',
+      loadMethod: 'getItems',
+      errorMessage: 'Test page requires a memo db client.'
+    })
+  }
+
+  getItem (key) {
+    return this.items.find((item) => item.key === key) || null
+  }
+}
+
+function makeMemoDb (items, pagination) {
+  return {
+    async getItems ({ limit, offset }) {
+      return { items, pagination }
+    }
+  }
+}
+
+test('load stores the list under the configured list field', async () => {
+  const items = [{ key: 'a' }, { key: 'b' }]
+  const page = new TestPage({ memoDb: makeMemoDb(items, { total: 2 }) })
+
+  const result = await page.load()
+
+  assert.deepEqual(result.items, items)
+  assert.deepEqual(page.items, items)
+  assert.equal(result.pagination.total, 2)
+})
+
+test('load throws when no memo db client is provided', async () => {
+  const page = new TestPage({})
+
+  await assert.rejects(
+    () => page.load(),
+    /requires a memo db client/
+  )
+})
+
+test('load defaults limit to 50 and offset to 0', async () => {
+  const calls = []
+  const memoDb = {
+    async getItems (params) {
+      calls.push(params)
+      return { items: [], pagination: {} }
+    }
+  }
+  const page = new TestPage({ memoDb })
+
+  await page.load()
+
+  assert.deepEqual(calls, [{ limit: 50, offset: 0 }])
+})
+
+test('canLoadMore returns false when pagination is null', async () => {
+  const page = new TestPage({ memoDb: makeMemoDb([], null) })
+  await page.load()
+
+  assert.equal(page.canLoadMore(), false)
+})
+
+test('canLoadMore returns false when pagination has no hasMore field', async () => {
+  const page = new TestPage({ memoDb: makeMemoDb([], { total: 0 }) })
+  await page.load()
+
+  assert.equal(page.canLoadMore(), false)
+})
+
+test('canLoadMore reflects pagination.hasMore', async () => {
+  const more = new TestPage({ memoDb: makeMemoDb([], { hasMore: true }) })
+  await more.load()
+  assert.equal(more.canLoadMore(), true)
+
+  const done = new TestPage({ memoDb: makeMemoDb([], { hasMore: false }) })
+  await done.load()
+  assert.equal(done.canLoadMore(), false)
+})

psf-memo-client/test/unit/profile-page.test.js

@@ -75,7 +75,7 @@ test('load throws when no address is provided', async () => {
   )
 })
 
-test('load defaults limit to 100 and offset to 0', async () => {
+test('load defaults limit to 50 and offset to 0', async () => {
   const calls = []
   const addr = 'bitcoincash:qqlrzp23w08434twmvr4fxw672whkjy0py26r63g3d'
   const memoDb = {
@@ -91,7 +91,7 @@ test('load defaults limit to 100 and offset to 0', async () => {
 
   await page.load()
 
-  assert.deepEqual(calls, [{ a: addr, params: { limit: 100, offset: 0 } }])
+  assert.deepEqual(calls, [{ a: addr, params: { limit: 50, offset: 0 } }])
 })
 
 test('load sets pagination to null when the API returns none', async () => {
@@ -184,3 +184,53 @@ test('follow throws when no memo follow handler is injected', async () => {
     /requires a memo follow handler/
   )
 })
+
+test('canLoadMore reflects pagination.hasMore', async () => {
+  const addr = 'bitcoincash:qqlrzp23w08434twmvr4fxw672whkjy0py26r63g3d'
+  const more = new ProfilePage({
+    memoDb: {
+      async getPostsByAddr () { return { posts: [], pagination: { hasMore: true } } },
+      async getFollowState () { return false },
+      async getMuteState () { return false }
+    },
+    addr
+  })
+  await more.load()
+  assert.equal(more.canLoadMore(), true)
+
+  const done = new ProfilePage({
+    memoDb: {
+      async getPostsByAddr () { return { posts: [], pagination: { hasMore: false } } },
+      async getFollowState () { return false },
+      async getMuteState () { return false }
+    },
+    addr
+  })
+  await done.load()
+  assert.equal(done.canLoadMore(), false)
+})
+
+test('canLoadMore returns false when pagination is null or missing hasMore', async () => {
+  const addr = 'bitcoincash:qqlrzp23w08434twmvr4fxw672whkjy0py26r63g3d'
+  const pageNull = new ProfilePage({
+    memoDb: {
+      async getPostsByAddr () { return { posts: [], pagination: null } },
+      async getFollowState () { return false },
+      async getMuteState () { return false }
+    },
+    addr
+  })
+  await pageNull.load()
+  assert.equal(pageNull.canLoadMore(), false)
+
+  const pageEmpty = new ProfilePage({
+    memoDb: {
+      async getPostsByAddr () { return { posts: [], pagination: { total: 0 } } },
+      async getFollowState () { return false },
+      async getMuteState () { return false }
+    },
+    addr
+  })
+  await pageEmpty.load()
+  assert.equal(pageEmpty.canLoadMore(), false)
+})

psf-memo-client/test/unit/recent-feed-page.test.js

@@ -66,7 +66,7 @@ test('load throws when no memo db client is provided', async () => {
   )
 })
 
-test('load defaults limit to 100 and offset to 0', async () => {
+test('load defaults limit to 50 and offset to 0', async () => {
   const calls = []
   const memoDb = {
     async getRecentPosts (params) {
@@ -78,5 +78,5 @@ test('load defaults limit to 100 and offset to 0', async () => {
 
   await page.load()
 
-  assert.deepEqual(calls, [{ limit: 100, offset: 0 }])
+  assert.deepEqual(calls, [{ limit: 50, offset: 0 }])
 })

psf-memo-client/test/unit/recent-profiles-page.test.js

@@ -0,0 +1,99 @@
+/*
+  Unit tests for the recent profiles page controller.
+
+  The recent profiles page is a thin, testable wrapper around the MemoDb client.
+  It loads the paginated list of recent profiles and exposes each profile.
+*/
+
+'use strict'
+
+const test = require('node:test')
+const assert = require('node:assert/strict')
+const RecentProfilesPage = require('../../src/services/recent-profiles-page')
+
+function makeMemoDb (profiles, pagination) {
+  return {
+    async getRecentProfiles ({ limit, offset }) {
+      return { profiles, pagination }
+    }
+  }
+}
+
+test('load returns profiles and pagination', async () => {
+  const profiles = [
+    { addr: 'bitcoincash:a', text: 'Alice' },
+    { addr: 'bitcoincash:b', text: 'Bob' }
+  ]
+  const page = new RecentProfilesPage({ memoDb: makeMemoDb(profiles, { total: 2 }) })
+
+  const result = await page.load()
+
+  assert.deepEqual(result.profiles, profiles)
+  assert.equal(result.pagination.total, 2)
+})
+
+test('load throws when no memo db client is provided', async () => {
+  const page = new RecentProfilesPage({})
+
+  await assert.rejects(
+    () => page.load(),
+    /requires a memo db client/
+  )
+})
+
+test('load forwards limit and offset to the memo db client', async () => {
+  const calls = []
+  const memoDb = {
+    async getRecentProfiles (params) {
+      calls.push(params)
+      return { profiles: [], pagination: {} }
+    }
+  }
+  const page = new RecentProfilesPage({ memoDb })
+
+  await page.load({ limit: 10, offset: 20 })
+
+  assert.deepEqual(calls, [{ limit: 10, offset: 20 }])
+})
+
+test('load defaults limit to 50 and offset to 0', async () => {
+  const calls = []
+  const memoDb = {
+    async getRecentProfiles (params) {
+      calls.push(params)
+      return { profiles: [], pagination: {} }
+    }
+  }
+  const page = new RecentProfilesPage({ memoDb })
+
+  await page.load()
+
+  assert.deepEqual(calls, [{ limit: 50, offset: 0 }])
+})
+
+test('canLoadMore reflects pagination.hasMore', async () => {
+  const pageMore = new RecentProfilesPage({
+    memoDb: makeMemoDb([], { hasMore: true })
+  })
+  await pageMore.load()
+  assert.equal(pageMore.canLoadMore(), true)
+
+  const pageDone = new RecentProfilesPage({
+    memoDb: makeMemoDb([], { hasMore: false })
+  })
+  await pageDone.load()
+  assert.equal(pageDone.canLoadMore(), false)
+})
+
+test('getProfile returns a loaded profile by address', async () => {
+  const profiles = [{ addr: 'bitcoincash:a', text: 'Alice' }]
+  const page = new RecentProfilesPage({ memoDb: makeMemoDb(profiles, {}) })
+
+  await page.load()
+
+  assert.equal(page.getProfile('bitcoincash:a').text, 'Alice')
+})
+
+test('exposes the recent profiles path', () => {
+  assert.equal(RecentProfilesPage.RECENT_PROFILES_PATH, '/profile/recent')
+})

psf-memo-client/test/unit/search-page.test.js

@@ -49,7 +49,7 @@ test('submit forwards query, limit and offset to the memo db client', async () =
   assert.deepEqual(calls, [{ q: 'alice', params: { limit: 10, offset: 20 } }])
 })
 
-test('submit defaults limit to 100 and offset to 0', async () => {
+test('submit defaults limit to 50 and offset to 0', async () => {
   const calls = []
   const memoDb = {
     async search (q, params) {
@@ -62,7 +62,7 @@ test('submit defaults limit to 100 and offset to 0', async () => {
   page.setQuery('memo')
   await page.submit()
 
-  assert.deepEqual(calls, [{ q: 'memo', params: { limit: 100, offset: 0 } }])
+  assert.deepEqual(calls, [{ q: 'memo', params: { limit: 50, offset: 0 } }])
 })
 
 test('submit throws when no memo db client is provided', async () => {
@@ -128,3 +128,27 @@ test('getProfile returns null when no profile matches', async () => {
 
   assert.equal(page.getProfile('addr2'), null)
 })
+
+test('canLoadMore reflects pagination.hasMore', async () => {
+  const more = new SearchPage({ memoDb: makeMemoDb([], [], { hasMore: true }) })
+  more.setQuery('hello')
+  await more.submit()
+  assert.equal(more.canLoadMore(), true)
+
+  const done = new SearchPage({ memoDb: makeMemoDb([], [], { hasMore: false }) })
+  done.setQuery('hello')
+  await done.submit()
+  assert.equal(done.canLoadMore(), false)
+})
+
+test('canLoadMore returns false when pagination is null or missing hasMore', async () => {
+  const pageNull = new SearchPage({ memoDb: makeMemoDb([], [], null) })
+  pageNull.setQuery('hello')
+  await pageNull.submit()
+  assert.equal(pageNull.canLoadMore(), false)
+
+  const pageEmpty = new SearchPage({ memoDb: makeMemoDb([], [], { total: 0 }) })
+  pageEmpty.setQuery('hello')
+  await pageEmpty.submit()
+  assert.equal(pageEmpty.canLoadMore(), false)
+})

psf-memo-client/test/unit/topic-feed-page.test.js

@@ -71,7 +71,7 @@ test('load forwards limit and offset to the memo db client', async () => {
   assert.deepEqual(calls, [{ room: 'bitcoin', params: { limit: 10, offset: 20 } }])
 })
 
-test('load defaults limit and offset', async () => {
+test('load defaults limit and offset to 50 and 0', async () => {
   const calls = []
   const memoDb = {
     async getTopicPosts (room, params) {
@@ -89,7 +89,7 @@ test('load defaults limit and offset', async () => {
 
   await page.load()
 
-  assert.deepEqual(calls, [{ limit: 100, offset: 0 }])
+  assert.deepEqual(calls, [{ limit: 50, offset: 0 }])
 })
 
 test('stores the pagination returned by the memo db client', async () => {
@@ -226,3 +226,23 @@ test('follow requires a memo topic follow handler', async () => {
 test('exposes the topic feed path for a room', () => {
   assert.equal(TopicFeedPage.topicFeedPath('bitcoin'), '/topics/bitcoin')
 })
+
+test('canLoadMore reflects pagination.hasMore', async () => {
+  const more = new TopicFeedPage({ memoDb: makeMemoDb([], { hasMore: true }), room: 'bitcoin' })
+  await more.load()
+  assert.equal(more.canLoadMore(), true)
+
+  const done = new TopicFeedPage({ memoDb: makeMemoDb([], { hasMore: false }), room: 'bitcoin' })
+  await done.load()
+  assert.equal(done.canLoadMore(), false)
+})
+
+test('canLoadMore returns false when pagination is null or missing hasMore', async () => {
+  const pageNull = new TopicFeedPage({ memoDb: makeMemoDb([], null), room: 'bitcoin' })
+  await pageNull.load()
+  assert.equal(pageNull.canLoadMore(), false)
+
+  const pageEmpty = new TopicFeedPage({ memoDb: makeMemoDb([], { total: 0 }), room: 'bitcoin' })
+  await pageEmpty.load()
+  assert.equal(pageEmpty.canLoadMore(), false)
+})

swarmforge/scripts/architect-startup.sh

@@ -42,7 +42,8 @@ if grep -q "Missing source file argument" \
 else
   bad "mutate4javascript"
 fi
-if psf-memo-client/node_modules/.bin/dry4javascript >/dev/null 2>&1; then
+if grep -q "Usage: dry4javascript" \
+    <<< "$(psf-memo-client/node_modules/.bin/dry4javascript --help 2>&1)"; then
   ok "dry4javascript"
 else
   bad "dry4javascript"