fix: align select-all behavior and board-detail docs with filters

app/src/main/java/space/hackenslacker/kanbn4droid/app/boarddetail/BoardDetailViewModel.kt

@@ -148,7 +148,7 @@ class BoardDetailViewModel(
 
     fun selectAllOnCurrentPage() {
         val current = _uiState.value
-        val pageCards = current.boardDetail
+        val pageCards = current.filteredBoardDetail
             ?.lists
             ?.getOrNull(current.currentPageIndex)
             ?.cards

app/src/main/res/values/strings.xml

@@ -66,6 +66,6 @@
     <string name="due_date">Due date</string>
     <string name="clear_due_date">Clear date</string>
     <string name="add_card_tags">Tags</string>
-    <string name="add_card_tags_placeholder">Tag selector will be wired in the next task.</string>
-    <string name="filter_tags_placeholder">Tag selector will be wired in the next task.</string>
+    <string name="add_card_tags_placeholder">Select one or more tags.</string>
+    <string name="filter_tags_placeholder">Select tags to include.</string>
 </resources>

app/src/test/java/space/hackenslacker/kanbn4droid/app/boarddetail/BoardDetailViewModelTest.kt

@@ -51,6 +51,18 @@ class BoardDetailViewModelTest {
         assertEquals(setOf("card-1", "card-2", "card-3"), viewModel.uiState.value.selectedCardIds)
     }
 
+    @Test
+    fun selectAllWithActiveFilter_selectsOnlyVisibleCardsOnCurrentPage() = runTest {
+        val viewModel = newLoadedViewModel(this, FakeBoardDetailDataSource(), detailWithFilterFixture())
+
+        viewModel.openFilterDialog()
+        viewModel.updatePendingTagFilterIds(setOf("tag-b"))
+        viewModel.applyFilterDialog()
+        viewModel.selectAllOnCurrentPage()
+
+        assertEquals(setOf("card-2"), viewModel.uiState.value.selectedCardIds)
+    }
+
     @Test
     fun backPressWithSelection_clearsSelectionAndReturnsTrue() = runTest {
         val viewModel = newLoadedViewModel(this, FakeBoardDetailDataSource(), detailWithTwoLists())