feat: sort repositories by recent update

app/src/main/java/com/ubisam/ubgitea/feature/repositories/RepositoryListViewModel.kt

@@ -157,6 +157,7 @@ class RepositoryListViewModel(
     private var hasAuthenticatedSession = false
     private var repositoryContent: RepositoryListUiState.Content? = null
     private var cachedOrganizations: List<OrganizationSummary>? = null
+    private val repositorySnapshots = mutableMapOf<RepositorySnapshotKey, List<RepositorySummary>>()
 
     init {
         startOperation { restoreSession() }
@@ -252,6 +253,7 @@ class RepositoryListViewModel(
             is RepositoryListUiState.Empty -> Triple(1, current.mode, current.organization)
             else -> return
         }
+        repositorySnapshots.remove(RepositorySnapshotKey(mode, organization))
         startOperation { loadRepositoryPage(account, page, mode, organization) }
     }
 
@@ -342,6 +344,7 @@ class RepositoryListViewModel(
             hasAuthenticatedSession = false
             repositoryContent = null
             cachedOrganizations = null
+            repositorySnapshots.clear()
             mutableState.value = RepositoryListUiState.SignedOut
         }
     }
@@ -412,13 +415,11 @@ class RepositoryListViewModel(
         cancelRowBranchJobs()
         mutableState.value = RepositoryListUiState.Loading
         try {
-            val result = when {
-                mode == RepositoryListMode.FAVORITES -> favoritesApi.listStarred(page, REPOSITORY_PAGE_SIZE)
-                organization != null -> organizationsApi.listOrganizationRepositories(organization, page, REPOSITORY_PAGE_SIZE)
-                else -> browserApi.listRepositories(page, REPOSITORY_PAGE_SIZE)
-            }
+            val repositories = loadRepositorySnapshot(mode, organization)
+            val pageStart = (page - 1) * REPOSITORY_PAGE_SIZE
+            val pageItems = repositories.drop(pageStart).take(REPOSITORY_PAGE_SIZE)
             val organizations = if (mode == RepositoryListMode.ALL) loadOrganizationsOnce() else emptyList()
-            val rows = result.items.map { it.toUiModel() }
+            val rows = pageItems.map { it.toUiModel() }
             if (rows.isEmpty() && page == 1) {
                 repositoryContent = null
                 mutableState.value = RepositoryListUiState.Empty(accountName, mode, organization)
@@ -428,7 +429,7 @@ class RepositoryListViewModel(
                 accountName,
                 rows,
                 page,
-                result.nextPage != null,
+                pageStart + rows.size < repositories.size,
                 mode,
                 organization,
                 organizations,
@@ -452,6 +453,22 @@ class RepositoryListViewModel(
         }
     }
 
+    private suspend fun loadRepositorySnapshot(
+        mode: RepositoryListMode,
+        organization: String?,
+    ): List<RepositorySummary> {
+        val key = RepositorySnapshotKey(mode, organization)
+        repositorySnapshots[key]?.let { return it }
+        val loaded = loadAllPages { page ->
+            when {
+                mode == RepositoryListMode.FAVORITES -> favoritesApi.listStarred(page, PAGE_SIZE)
+                organization != null -> organizationsApi.listOrganizationRepositories(organization, page, PAGE_SIZE)
+                else -> browserApi.listRepositories(page, PAGE_SIZE)
+            }
+        }.sortedByDescending(RepositorySummary::updatedAtEpochMillis)
+        return loaded.also { repositorySnapshots[key] = it }
+    }
+
     private suspend fun loadOrganizationsOnce(): List<OrganizationSummary> {
         cachedOrganizations?.let { return it }
         val loaded = try {
@@ -623,6 +640,11 @@ class RepositoryListViewModel(
     }
 }
 
+private data class RepositorySnapshotKey(
+    val mode: RepositoryListMode,
+    val organization: String?,
+)
+
 internal fun Throwable.toRepositoryListError(): RepositoryListError = when (this) {
     is ApiFailure.AuthenticationExpired -> RepositoryListError.AUTHENTICATION_EXPIRED
     is ApiFailure.PermissionDenied -> RepositoryListError.PERMISSION_DENIED

app/src/test/java/com/ubisam/ubgitea/feature/repositories/RepositoryListViewModelTest.kt

@@ -117,11 +117,11 @@ class RepositoryListViewModelTest {
     }
 
     @Test
-    fun `repository list requests recent-push order and pages five at a time`() = runTest(dispatcher.scheduler) {
+    fun `repository list globally sorts server pages by recent update and pages locally`() = runTest(dispatcher.scheduler) {
         val browser = FakeBrowser(
             repositories = listOf(
-                Page.of(listOf(repo("newest"), repo("older")), nextPage = 2),
-                Page.of(listOf(repo("oldest")), nextPage = null),
+                Page.of(listOf(repo("oldest", 1_000L), repo("middle", 2_000L)), nextPage = 2),
+                Page.of(listOf(repo("newest", 3_000L), repo("newer", 2_500L), repo("older", 1_500L), repo("old", 500L)), nextPage = null),
             ),
         )
         val viewModel = viewModel(browser)
@@ -130,19 +130,33 @@ class RepositoryListViewModelTest {
         val firstPage = viewModel.state.value as RepositoryListUiState.Content
         assertEquals(1, firstPage.page)
         assertTrue(firstPage.hasNextPage)
-        assertEquals(listOf("newest", "older"), firstPage.repositories.map { it.name })
-        assertEquals(listOf(1 to 5), browser.repositoryPageRequests)
+        assertEquals(listOf("newest", "newer", "middle", "older", "oldest"), firstPage.repositories.map { it.name })
+        assertEquals(listOf(1 to 50, 2 to 50), browser.repositoryPageRequests)
 
         viewModel.nextPage()
         advanceUntilIdle()
         val secondPage = viewModel.state.value as RepositoryListUiState.Content
         assertEquals(2, secondPage.page)
         assertFalse(secondPage.hasNextPage)
-        assertEquals(listOf("oldest"), secondPage.repositories.map { it.name })
+        assertEquals(listOf("old"), secondPage.repositories.map { it.name })
+        assertEquals(listOf(1 to 50, 2 to 50), browser.repositoryPageRequests)
 
         viewModel.previousPage()
         advanceUntilIdle()
         assertEquals(1, (viewModel.state.value as RepositoryListUiState.Content).page)
+        assertEquals(listOf(1 to 50, 2 to 50), browser.repositoryPageRequests)
+    }
+
+    @Test
+    fun `refresh invalidates the globally sorted repository snapshot`() = runTest(dispatcher.scheduler) {
+        val browser = FakeBrowser(repositories = listOf(page1Of(repo("repo"))))
+        val viewModel = viewModel(browser)
+        advanceUntilIdle()
+
+        viewModel.refreshRepositories()
+        advanceUntilIdle()
+
+        assertEquals(listOf(1 to 50, 1 to 50), browser.repositoryPageRequests)
     }
 
     @Test
@@ -406,13 +420,13 @@ class RepositoryListViewModelTest {
 
     private fun page1Of(vararg repositories: RepositorySummary) = Page.of(repositories.toList(), null)
 
-    private fun repo(name: String) = RepositorySummary(
+    private fun repo(name: String, updatedAtEpochMillis: Long = 1_000L) = RepositorySummary(
         coordinates = RepositoryCoordinates.of("owner", name),
         description = null,
         defaultBranch = RepositoryRef.of("main"),
         isPrivate = true,
         isFork = false,
-        updatedAtEpochMillis = 1_000L,
+        updatedAtEpochMillis = updatedAtEpochMillis,
     )
 
     private fun viewModel(

docs/development-log.md

@@ -313,3 +313,10 @@ This is the append-only implementation and handoff record shared by Codex and Cl
 - Implementation: Repository rows now use the stable string key `owner/name`; repository components cannot contain `/`, so the key remains unique across owners and repositories while being Android-saveable.
 - Regression coverage: Added tests for deterministic key encoding and for equal repository names under different owners.
 - Checks: Focused tests and `assembleDebug testDebugUnitTest lintDebug` passed. The APK installed wirelessly over the authenticated device, `MainActivity` remained resumed, and the cleared crash buffer stayed empty. Final visual inspection is pending because the handset locked.
+
+## 2026-08-26 — TASK-021 global recent-update repository order
+
+- Agent and role: Codex, implementer and device verifier.
+- Root cause: This Gitea server returned `/user/repos` in apparent name order despite the existing `sort=updated&order=desc` query, so trusting server paging could not guarantee that the newest repository appeared on page 1.
+- Implementation: The ViewModel now loads all server pages in 50-row batches, performs one stable descending sort by `RepositorySummary.updatedAtEpochMillis`, and slices that immutable snapshot into five-row UI pages. Snapshots are scoped by all/favorites/organization selection, reused for next/previous navigation, and invalidated by refresh and logout.
+- Checks: Focused regression tests and `assembleDebug testDebugUnitTest lintDebug` passed. The rebuilt APK was installed wirelessly; the authenticated first page visibly changed from alphabetical order to recent-update order, all five rows loaded their latest branch labels, and the crash buffer remained empty.

tasks/021-repository-global-recent-update-order.md

@@ -0,0 +1,33 @@
+# TASK-021: Enforce recent-push repository order across pages
+
+Status: implemented and device-verified
+Owner: Codex
+Reviewer: Claude
+
+## Outcome
+
+The repository list places the repository with the newest Gitea `updated_at` value at the top of page 1 and preserves that descending order across every local page, even when this Gitea server ignores `sort=updated&order=desc` on repository-list endpoints.
+
+## Scope
+
+- Read every accessible repository page for the selected list (all, organization, or favorites).
+- Sort the complete result by `updatedAtEpochMillis` descending before splitting it into five-row UI pages.
+- Cache the sorted snapshot during navigation and invalidate it on refresh or logout.
+
+## Acceptance criteria
+
+- [x] A newer repository returned on a later server page appears before older repositories from page 1.
+- [x] Local next/previous navigation does not refetch the complete server list.
+- [x] Refresh invalidates and rebuilds the sorted snapshot.
+- [x] Empty, error, authentication-expired, organization, and favorites behavior remains intact.
+- [x] Build, unit tests, lint, secret scan, and physical-device verification pass.
+
+## Note
+
+The Gitea repository payload exposes `updated_at`, which is the existing product proxy for recent repository push activity. Exact branch commit timestamps continue to be fetched only for the five visible rows so one repository with a broken branch endpoint cannot block the global list.
+
+## Evidence
+
+- Focused ViewModel tests cover cross-server-page sorting, five-row local paging, navigation caching, and refresh invalidation.
+- `assembleDebug testDebugUnitTest lintDebug` passed.
+- The APK was installed wirelessly over the existing authenticated app. Page 1 changed from the server's apparent alphabetical order to the newest-update order, rendered five repositories with their latest branch labels, retained next-page navigation, and produced no crash entry.