feat(memos): sort note lists from Z to A

Add a title Z-A option beside title A-Z on web, Android, iOS, the API, and the desktop sidecar. Pinned notes stay first, and same-title tie breaks stay as they were.

apps/api/src/memo-list-service.test.mjs

@@ -91,6 +91,51 @@ describe("memo list service", () => {
     }
   });
 
+  test("paginates title Z-A by reverse title and keeps the update-time tie break", async () => {
+    const titleExpression = "LOWER(COALESCE(NULLIF(m.title, ''), '无标题笔记'))";
+    const firstDatabase = createDatabase({
+      rows: [memoRow("memo_1", { title: "Zulu" }), memoRow("memo_2", { title: "Alpha" })],
+      totalCount: 2,
+    });
+    const first = await listMemos(firstDatabase, {
+      workspaceId: "ws_1",
+      sort: "title-desc",
+      limit: 1,
+    });
+    const orderQuery = firstDatabase.calls.find((call) => call.sql.includes("ORDER BY"));
+
+    expect(orderQuery.sql).toContain(`m.is_pinned DESC, ${titleExpression} DESC, m.updated_at DESC, m.id DESC`);
+    expect(orderQuery.sql).not.toContain(`${titleExpression} ASC`);
+
+    const secondDatabase = createDatabase({ rows: [] });
+    await listMemos(secondDatabase, {
+      workspaceId: "ws_1",
+      sort: "title-desc",
+      limit: 1,
+      cursor: first.nextCursor,
+    });
+    const pageQuery = secondDatabase.calls.find((call) => call.sql.includes("SELECT m.id"));
+
+    expect(pageQuery.sql).toContain(`${titleExpression} < ?`);
+    expect(pageQuery.sql).not.toContain(`${titleExpression} > ?`);
+    expect(pageQuery.sql).toContain("m.updated_at < ?");
+    expect(pageQuery.parameters).toContain("zulu");
+    expect(pageQuery.parameters).toContain("2026-08-01T01:00:00.000Z");
+  });
+
+  test("keeps trash ordered by deletion time when the title sort is reversed", async () => {
+    const database = createDatabase();
+    await listMemos(database, {
+      workspaceId: "ws_1",
+      includeTrash: true,
+      sort: "title-desc",
+    });
+    const pageQuery = database.calls.find((call) => call.sql.includes("ORDER BY"));
+
+    expect(pageQuery.sql).toContain("ORDER BY m.deleted_at DESC, m.id DESC");
+    expect(pageQuery.sql).not.toContain("NULLIF(m.title, '')");
+  });
+
   test("filters by one exact tag in page and count queries", async () => {
     const database = createDatabase();
     await listMemos(database, {

apps/api/src/memo-list-service.ts

@@ -30,7 +30,7 @@ export type MemoSummaryRow = {
   revision: number;
 };
 
-type MemoListSortMode = "updated-desc" | "created-desc" | "title-asc";
+type MemoListSortMode = "updated-desc" | "created-desc" | "title-asc" | "title-desc";
 type MemoListFilterMode = "all" | "tagged" | "untagged" | "pinned";
 
 type MemoListCursor = {
@@ -94,7 +94,10 @@ const normalizeMemoTitle = (value: string | null | undefined) => {
 };
 
 const normalizeMemoListSort = (value: string | undefined): MemoListSortMode =>
-  value === "created-desc" || value === "title-asc" ? value : "updated-desc";
+  value === "created-desc" || value === "title-asc" || value === "title-desc" ? value : "updated-desc";
+
+const isTitleSort = (sort: MemoListSortMode): sort is "title-asc" | "title-desc" =>
+  sort === "title-asc" || sort === "title-desc";
 
 const normalizeMemoListFilter = (value: string | undefined): MemoListFilterMode =>
   value === "tagged" || value === "untagged" || value === "pinned" ? value : "all";
@@ -110,7 +113,7 @@ const encodeMemoListCursor = (
   else cursor.pinned = memo.is_pinned;
 
   if (sort === "created-desc") cursor.createdAt = memo.created_at;
-  else if (sort === "title-asc") {
+  else if (isTitleSort(sort)) {
     cursor.title = normalizeMemoTitle(memo.title).toLocaleLowerCase();
     cursor.updatedAt = memo.updated_at;
   } else cursor.updatedAt = memo.updated_at;
@@ -208,8 +211,9 @@ export const listMemos = async (
   const getOrderBy = () => {
     if (includeTrash) return "m.deleted_at DESC, m.id DESC";
     if (sort === "created-desc") return "m.is_pinned DESC, m.created_at DESC, m.id DESC";
-    if (sort === "title-asc") {
-      return `m.is_pinned DESC, ${titleSortExpression} ASC, m.updated_at DESC, m.id DESC`;
+    if (isTitleSort(sort)) {
+      const direction = sort === "title-desc" ? "DESC" : "ASC";
+      return `m.is_pinned DESC, ${titleSortExpression} ${direction}, m.updated_at DESC, m.id DESC`;
     }
     return "m.is_pinned DESC, m.updated_at DESC, m.id DESC";
   };
@@ -223,9 +227,10 @@ export const listMemos = async (
     } else if (sort === "created-desc") {
       cursorConditions.push("(m.is_pinned < ? OR (m.is_pinned = ? AND (m.created_at < ? OR (m.created_at = ? AND m.id < ?))))");
       cursorBinds.push(cursor.pinned ?? 0, cursor.pinned ?? 0, cursor.createdAt ?? "", cursor.createdAt ?? "", cursor.id);
-    } else if (sort === "title-asc") {
+    } else if (isTitleSort(sort)) {
+      const titleOperator = sort === "title-desc" ? "<" : ">";
       cursorConditions.push(
-        `(m.is_pinned < ? OR (m.is_pinned = ? AND (${titleSortExpression} > ? OR (${titleSortExpression} = ? AND (m.updated_at < ? OR (m.updated_at = ? AND m.id < ?))))))`,
+        `(m.is_pinned < ? OR (m.is_pinned = ? AND (${titleSortExpression} ${titleOperator} ? OR (${titleSortExpression} = ? AND (m.updated_at < ? OR (m.updated_at = ? AND m.id < ?))))))`,
       );
       cursorBinds.push(cursor.pinned ?? 0, cursor.pinned ?? 0, cursor.title ?? "", cursor.title ?? "", cursor.updatedAt ?? "", cursor.updatedAt ?? "", cursor.id);
     } else {

apps/ios/EdgeEver/Data/Database/LocalMirrorRepository.swift

@@ -133,6 +133,7 @@ final class LocalMirrorRepository: @unchecked Sendable {
                 switch params.sort {
                 case .createdDesc: orderBy = "is_pinned DESC, created_at DESC, id DESC"
                 case .titleAsc: orderBy = "is_pinned DESC, title COLLATE NOCASE ASC, updated_at DESC, id DESC"
+                case .titleDesc: orderBy = "is_pinned DESC, title COLLATE NOCASE DESC, updated_at DESC, id DESC"
                 case .updatedDesc: orderBy = "is_pinned DESC, updated_at DESC, id DESC"
                 }
             }

apps/ios/EdgeEver/Data/Models/Models.swift

@@ -422,6 +422,7 @@ enum MemoSortMode: String, CaseIterable, Sendable {
     case updatedDesc = "updated-desc"
     case createdDesc = "created-desc"
     case titleAsc = "title-asc"
+    case titleDesc = "title-desc"
 }
 
 enum MemoFilterMode: String, CaseIterable, Sendable {

apps/ios/EdgeEver/Features/Workspace/ListActionsSheet.swift

@@ -120,6 +120,15 @@ struct ListActionsSheet: View {
                         store.reload(env: env)
                         dismiss()
                     }
+                    optionRow(
+                        active: store.sort == .titleDesc,
+                        icon: nil,
+                        label: env.preferences.t("标题 Z-A", en: "Title Z-A", ja: "タイトル Z-A", pl: "Tytuł Z–A")
+                    ) {
+                        store.sort = .titleDesc
+                        store.reload(env: env)
+                        dismiss()
+                    }
 
                     divider
                     sheetItem(

apps/ios/Tests/EdgeEverTests/MobileUIParityTests.swift

@@ -158,6 +158,7 @@ final class MobileUIParityTests: XCTestCase {
         XCTAssertEqual(MemoListTimestampField.resolve(for: .createdDesc).value(from: memo), memo.createdAt)
         XCTAssertEqual(MemoListTimestampField.resolve(for: .updatedDesc).value(from: memo), memo.updatedAt)
         XCTAssertEqual(MemoListTimestampField.resolve(for: .titleAsc).value(from: memo), memo.updatedAt)
+        XCTAssertEqual(MemoListTimestampField.resolve(for: .titleDesc).value(from: memo), memo.updatedAt)
     }
 
     func testMemoDetailDateIncludesHistoricalYear() {

apps/mobile/src/lib/local-mirror.ts

@@ -136,7 +136,9 @@ export const listLocalMemos = async (scope: string, params: LocalMemoListParams)
       ? "is_pinned DESC, created_at DESC, id DESC"
       : params.sort === "title-asc"
         ? "is_pinned DESC, title COLLATE NOCASE ASC, updated_at DESC, id DESC"
-        : "is_pinned DESC, updated_at DESC, id DESC";
+        : params.sort === "title-desc"
+          ? "is_pinned DESC, title COLLATE NOCASE DESC, updated_at DESC, id DESC"
+          : "is_pinned DESC, updated_at DESC, id DESC";
   const tag = params.tag?.trim() ?? "";
   const limit = params.limit ?? 50;
   const offset = Math.max(0, params.offset ?? 0);

apps/mobile/src/screens/WorkspaceActionSheets.tsx

@@ -148,6 +148,7 @@ export const NotesActionsModal = ({
           <SheetOptionRow active={memoSortMode === "updated-desc"} label="最近更新" onPress={() => onSortModeChange("updated-desc")} />
           <SheetOptionRow active={memoSortMode === "created-desc"} label="创建时间" onPress={() => onSortModeChange("created-desc")} />
           <SheetOptionRow active={memoSortMode === "title-asc"} label="标题 A-Z" onPress={() => onSortModeChange("title-asc")} />
+          <SheetOptionRow active={memoSortMode === "title-desc"} label="标题 Z-A" onPress={() => onSortModeChange("title-desc")} />
         </ScrollView>
       </Pressable>
     </Pressable>

apps/mobile/src/screens/workspace-utils.test.ts

@@ -1,5 +1,5 @@
 import { describe, expect, test } from "bun:test";
-import type { Notebook } from "@edgeever/shared";
+import type { MemoSummary, Notebook } from "@edgeever/shared";
 import {
   filterCollapsedNotebookOptions,
   formatMemoDetailDate,
@@ -11,6 +11,7 @@ import {
   isEnglishMobileLocale,
   markdownToLocalText,
   parseTags,
+  sortMemoSummaries,
 } from "./workspace-utils";
 
 const notebook = (id: string, parentId: string | null, sortOrder: number): Notebook => ({
@@ -91,4 +92,25 @@ describe("mobile workspace utilities", () => {
       Intl.DateTimeFormat.prototype.resolvedOptions = original;
     }
   });
+
+  test("reverses title order and keeps equal titles in their original order", () => {
+    const memo = (id: string, title: string): MemoSummary => ({
+      id,
+      notebookId: "nb",
+      title,
+      excerpt: "",
+      tags: [],
+      isPinned: false,
+      isArchived: false,
+      isDeleted: false,
+      revision: 1,
+      createdAt: "2026-08-01T00:00:00.000Z",
+      updatedAt: "2026-08-01T00:00:00.000Z",
+      deletedAt: null,
+    });
+    const memos = [memo("b", "Alpha"), memo("a", "Alpha"), memo("z", "Zulu")];
+
+    expect(sortMemoSummaries(memos, "title-asc").map((item) => item.id)).toEqual(["b", "a", "z"]);
+    expect(sortMemoSummaries(memos, "title-desc").map((item) => item.id)).toEqual(["z", "b", "a"]);
+  });
 });

apps/mobile/src/screens/workspace-utils.ts

@@ -166,8 +166,9 @@ export const formatMemoDetailDate = (value: string, locale: string) => {
 
 export const sortMemoSummaries = (memos: MemoSummary[], sortMode: unknown) =>
   [...memos].sort((left, right) => {
-    if (sortMode === "title-asc") {
-      return (left.title || DEFAULT_MEMO_TITLE).localeCompare(right.title || DEFAULT_MEMO_TITLE);
+    if (sortMode === "title-asc" || sortMode === "title-desc") {
+      const titleCompare = (left.title || DEFAULT_MEMO_TITLE).localeCompare(right.title || DEFAULT_MEMO_TITLE);
+      return sortMode === "title-desc" ? -titleCompare : titleCompare;
     }
     if (sortMode === "created-desc") {
       return right.createdAt.localeCompare(left.createdAt);

apps/web/src/lib/app-helpers.ts

@@ -169,6 +169,7 @@ export const getMemoSortOptions = (t: TFunction): Array<{ value: MemoSortMode; l
   { value: "updated-desc", label: t("options.memoSort.updatedDesc") },
   { value: "created-desc", label: t("options.memoSort.createdDesc") },
   { value: "title-asc", label: t("options.memoSort.titleAsc") },
+  { value: "title-desc", label: t("options.memoSort.titleDesc") },
 ];
 
 const NOTEBOOK_SORT_VALUES: NotebookSortMode[] = ["custom", "name-asc", "memo-count-desc", "updated-desc"];
@@ -707,14 +708,14 @@ export const sortMemos = (memos: MemoSummary[], sortMode: MemoSortMode, prioriti
       return first.isPinned ? -1 : 1;
     }
 
-    if (sortMode === "title-asc") {
+    if (sortMode === "title-asc" || sortMode === "title-desc") {
       const titleCompare = getMemoTitle(first.title).localeCompare(getMemoTitle(second.title), "zh-CN", {
         numeric: true,
         sensitivity: "base",
       });
 
       if (titleCompare !== 0) {
-        return titleCompare;
+        return sortMode === "title-desc" ? -titleCompare : titleCompare;
       }
 
       return compareDateDesc(first.updatedAt, second.updatedAt);

apps/web/src/lib/local-mirror.ts

@@ -264,7 +264,11 @@ export const listLocalMemos = async (scope: string, params: LocalMemoListParams)
   memos.sort((left, right) => {
     if (params.trash) return (right.deletedAt ?? "").localeCompare(left.deletedAt ?? "") || right.id.localeCompare(left.id);
     if (params.sort === "created-desc") return right.createdAt.localeCompare(left.createdAt) || right.id.localeCompare(left.id);
-    if (params.sort === "title-asc") return (left.title || left.excerpt).localeCompare(right.title || right.excerpt, "zh-CN") || right.updatedAt.localeCompare(left.updatedAt);
+    if (params.sort === "title-asc" || params.sort === "title-desc") {
+      const titleCompare = (left.title || left.excerpt).localeCompare(right.title || right.excerpt, "zh-CN");
+      if (titleCompare !== 0) return params.sort === "title-desc" ? -titleCompare : titleCompare;
+      return right.updatedAt.localeCompare(left.updatedAt);
+    }
     return Number(right.isPinned) - Number(left.isPinned) || right.updatedAt.localeCompare(left.updatedAt) || right.id.localeCompare(left.id);
   });
 

apps/web/src/lib/memo-list-cache.ts

@@ -59,11 +59,14 @@ const sortMemoSummariesForList = (memos: MemoSummary[], queryKey: readonly unkno
   const sortMode = queryKey[5];
   const sorted = [...memos];
 
-  if (sortMode === "title-asc") {
+  if (sortMode === "title-asc" || sortMode === "title-desc") {
+    const direction = sortMode === "title-desc" ? -1 : 1;
     return sorted.sort((left, right) => {
       const leftTitle = left.title?.trim() || left.excerpt || DEFAULT_MEMO_TITLE;
       const rightTitle = right.title?.trim() || right.excerpt || DEFAULT_MEMO_TITLE;
-      return leftTitle.localeCompare(rightTitle, "zh-CN") || left.id.localeCompare(right.id);
+      const titleCompare = leftTitle.localeCompare(rightTitle, "zh-CN");
+      if (titleCompare !== 0) return titleCompare * direction;
+      return left.id.localeCompare(right.id);
     });
   }