feat: Implement batch cancellation for audiobook processing with enhanced frontend progress display.

qwen3-tts-frontend/src/locales/en-US/audiobook.json

@@ -12,6 +12,7 @@
     "characters_ready": "Awaiting Character Review",
     "parsing": "Parsing Chapters",
     "ready": "Ready",
+    "processing": "Processing",
     "generating": "Generating",
     "done": "Done",
     "error": "Error"
@@ -63,6 +64,11 @@
     "deleteSuccess": "Project deleted",
     "allDoneToast": "\"{{title}}\" — all audio generation complete!",
     "segmentsProgress": "{{done}} / {{total}} segments done",
+    "chaptersProgress": "Chapters parsed: {{parsed}} / {{total}}",
+    "chaptersParsing": "{{count}} parsing",
+    "chaptersError": "{{count}} error",
+    "cancelBatch": "✖ Cancel Batch",
+    "cancelledToast": "Cancel signal sent. Running tasks will finish then stop.",
 
     "characters": {
       "title": "Characters ({{count}})",

qwen3-tts-frontend/src/locales/ja-JP/audiobook.json

@@ -12,6 +12,7 @@
     "characters_ready": "キャラクター確認待ち",
     "parsing": "章を解析中",
     "ready": "生成待ち",
+    "processing": "処理中",
     "generating": "生成中",
     "done": "完了",
     "error": "エラー"
@@ -63,6 +64,11 @@
     "deleteSuccess": "プロジェクトを削除しました",
     "allDoneToast": "「{{title}}」の音声生成がすべて完了しました！",
     "segmentsProgress": "{{done}} / {{total}} セグメント完了",
+    "chaptersProgress": "章解析：{{parsed}} / {{total}} 章",
+    "chaptersParsing": "{{count}} 解析中",
+    "chaptersError": "{{count}} エラー",
+    "cancelBatch": "✖ バッチキャンセル",
+    "cancelledToast": "キャンセルシグナルを送信しました。実行中のタスクは完了後停止します。",
 
     "characters": {
       "title": "キャラクター（{{count}} 人）",

qwen3-tts-frontend/src/locales/ko-KR/audiobook.json

@@ -12,6 +12,7 @@
     "characters_ready": "캐릭터 확인 대기",
     "parsing": "챕터 파싱 중",
     "ready": "생성 대기",
+    "processing": "처리 중",
     "generating": "생성 중",
     "done": "완료",
     "error": "오류"
@@ -63,6 +64,11 @@
     "deleteSuccess": "프로젝트가 삭제되었습니다",
     "allDoneToast": "「{{title}}」 음성 생성이 모두 완료되었습니다!",
     "segmentsProgress": "{{done}} / {{total}} 세그먼트 완료",
+    "chaptersProgress": "챕터 파싱: {{parsed}} / {{total}} 챕터",
+    "chaptersParsing": "{{count}} 파싱 중",
+    "chaptersError": "{{count}} 오류",
+    "cancelBatch": "✖ 일괄 취소",
+    "cancelledToast": "취소 신호가 전송되었습니다. 실행 중인 작업은 완료 후 중지됩니다.",
 
     "characters": {
       "title": "캐릭터 목록 ({{count}}명)",

qwen3-tts-frontend/src/locales/zh-CN/audiobook.json

@@ -12,6 +12,7 @@
     "characters_ready": "角色待确认",
     "parsing": "解析章节",
     "ready": "待生成",
+    "processing": "处理中",
     "generating": "生成中",
     "done": "已完成",
     "error": "出错"
@@ -63,6 +64,11 @@
     "deleteSuccess": "项目已删除",
     "allDoneToast": "「{{title}}」音频全部生成完成！",
     "segmentsProgress": "{{done}} / {{total}} 片段完成",
+    "chaptersProgress": "章节解析：{{parsed}} / {{total}} 章",
+    "chaptersParsing": "{{count}} 解析中",
+    "chaptersError": "{{count}} 出错",
+    "cancelBatch": "✖ 取消批量操作",
+    "cancelledToast": "已发送取消信号，当前正在运行的任务会完成后停止",
 
     "characters": {
       "title": "角色列表（{{count}} 个）",

qwen3-tts-frontend/src/locales/zh-TW/audiobook.json

@@ -12,6 +12,7 @@
     "characters_ready": "角色待確認",
     "parsing": "解析章節",
     "ready": "待生成",
+    "processing": "處理中",
     "generating": "生成中",
     "done": "已完成",
     "error": "出錯"
@@ -63,6 +64,11 @@
     "deleteSuccess": "專案已刪除",
     "allDoneToast": "「{{title}}」音訊全部生成完成！",
     "segmentsProgress": "{{done}} / {{total}} 片段完成",
+    "chaptersProgress": "章節解析：{{parsed}} / {{total}} 章",
+    "chaptersParsing": "{{count}} 解析中",
+    "chaptersError": "{{count}} 出錯",
+    "cancelBatch": "✖ 取消批量操作",
+    "cancelledToast": "已發送取消信號，當前正在執行的任務會完成後停止",
 
     "characters": {
       "title": "角色列表（{{count}} 個）",