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

AGENTS.md

@@ -97,12 +97,16 @@ Kanbn4Droid is an unofficial app to connect to and manipulate data stored in sel
       - Pressing "Delete" in the modal dialog MUST show a second confirmation modal asking if the user is sure, with buttons for "Cancel" and "I'm sure".
       - Only on pressing "I'm sure" in the second confirmation modal dialog should a board delete request be sent to the API.
     - Long-pressing any of the buttons must show a tooltip with the button name.
-- The view has a floating + button that shows a modal dialog that allows creating a new card using the Kan.bn API.
-  - The new card is added to the top of the currently shown list.
-  - The modal dialog has a field for the card's name. This field is mandatory
-  - Below the card name field there is a markdown-enabled text area for an optional card description.
-  - Below the card description field there is an optional date field to set the card's due date.
-  - Below the card's due date field there is an optional multi-value selector that allows choosing the card's tags from the tags available for the current board.
+- The view has a floating + button that allows choosing between two options: "Add new list", "Add new card"
+  - The Add new list option shows a modal dialog that asks for a list title. The modal dialog has two buttons at the bottom for "Cancel" and "Create"
+    - The list is created using the Kan.bn API.
+    - The new list is added at the end of the lists in the current board after the current last list.
+  - The Add new card option shows a modal dialog for creating a new card using the Kan.bn API.
+    - The new card is added to the top of the currently shown list.
+    - The modal dialog has a field for the card's name. This field is mandatory
+    - Below the card name field there is a markdown-enabled text area for an optional card description.
+    - Below the card description field there is an optional date field to set the card's due date.
+    - Below the card's due date field there is an optional multi-value selector that allows choosing the card's tags from the tags available for the current board.
 - The title bar of the view has two icon-only buttons for "Filter by tag" (icon is three bars of decreasing width, widest on top) and "Search" (icon is a leaning looking glass)
   - The filter by tag button opens a modal dialog that shows a multi-value selector that allows choosing from the tags available on the current board. The modal has a title that says "Filter by tag". The modal has buttons for "Cancel" and "Filter".
   - The search button a modal dialog that shows a text field that has the placeholder value "Search". The modal has a title that seas "Search by title". The modal has buttons for "Cancel" and "Search".

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())