feat: Implement AI script generation for audiobook projects

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

@@ -89,6 +89,7 @@
 
     "confirm": {
       "button": "Confirm Characters · Identify Chapters",
+      "generateScript": "Confirm Characters & Generate Script",
       "loading": "Identifying...",
       "chaptersRecognized": "Chapters identified"
     },

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

@@ -88,6 +88,7 @@
 
     "confirm": {
       "button": "キャラクター確認 · 章を識別",
+      "generateScript": "キャラクター確認 · 台本を生成",
       "loading": "識別中...",
       "chaptersRecognized": "章を識別しました"
     },

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

@@ -88,6 +88,7 @@
 
     "confirm": {
       "button": "캐릭터 확인 · 챕터 식별",
+      "generateScript": "캐릭터 확인 · 대본 생성",
       "loading": "식별 중...",
       "chaptersRecognized": "챕터가 식별되었습니다"
     },

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

@@ -92,6 +92,7 @@
 
     "confirm": {
       "button": "确认角色 · 识别章节",
+      "generateScript": "确认角色并生成剧本",
       "loading": "识别中...",
       "chaptersRecognized": "章节已识别"
     },

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

@@ -88,6 +88,7 @@
 
     "confirm": {
       "button": "確認角色 · 識別章節",
+      "generateScript": "確認角色並生成劇本",
       "loading": "識別中...",
       "chaptersRecognized": "章節已識別"
     },