更新

Docs/DevLogs/Day17.md

@@ -1,35 +1,5 @@
-## 🧩 发布预览与播放修复 (14:10)
+# Day 17 - 前端重构与体验优化
 
-### 内容
-- 发布页作品预览兼容签名 URL 与相对路径
-- 参考音频试听统一走 `resolveMediaUrl`
-- 素材/BGM 选择在列表变化时自动回退有效项
-- 录音预览 URL 回收、预览弹窗滚动状态恢复、全局任务提示挂载
-
-### 涉及文件
-- `frontend/src/app/publish/page.tsx`
-- `frontend/src/hooks/useMediaPlayers.ts`
-- `frontend/src/hooks/useBgm.ts`
-- `frontend/src/hooks/useMaterials.ts`
-- `frontend/src/components/home/RefAudioPanel.tsx`
-- `frontend/src/components/VideoPreviewModal.tsx`
-- `frontend/src/app/layout.tsx`
-
----
-
-## 🧩 首页持久化修复 (12:20)
-
-### 内容
-- 接入 `useHomePersistence`，补齐 `isRestored` 恢复/保存逻辑
-- 修复首页刷新后选择项恢复链路，`npm run build` 通过
-
-### 涉及文件
-- `frontend/src/app/page.tsx`
-- `frontend/src/hooks/useHomePersistence.ts`
-
----
-
-## 🧩 前端 UI 拆分 (11:00)
 ## 🧩 前端 UI 拆分 (09:10)
 
 ### 内容
@@ -96,6 +66,31 @@
 
 ---
 
+## 🖼️ 预览弹窗增强 (11:10)
+
+### 内容
+- 预览弹窗统一为可复用组件，支持标题与提示
+- 发布页预览与素材预览共享弹窗样式
+- 弹窗头部样式统一（图标 + 标题 + 关闭按钮）
+
+### 涉及文件
+- `frontend/src/components/VideoPreviewModal.tsx`
+- `frontend/src/app/page.tsx`
+- `frontend/src/app/publish/page.tsx`
+
+---
+
+## 🧭 术语统一 (11:20)
+
+### 内容
+- “视频预览” → “作品预览”
+- “历史视频” → “历史作品”
+- “选择要发布的视频” → “选择要发布的作品”
+- “选择素材视频” → “视频素材”
+- “选择配音方式” → “配音方式”
+
+---
+
 ## 🧱 Phase 2 Hook 抽取 (11:45)
 
 ### 内容
@@ -117,25 +112,44 @@
 
 ---
 
-## 🖼️ 预览弹窗增强 (11:10)
+## 🧩 首页持久化修复 (12:20)
 
 ### 内容
-- 预览弹窗统一为可复用组件，支持标题与提示
-- 发布页预览与素材预览共享弹窗样式
-- 弹窗头部样式统一（图标 + 标题 + 关闭按钮）
+- 接入 `useHomePersistence`，补齐 `isRestored` 恢复/保存逻辑
+- 修复首页刷新后选择项恢复链路，`npm run build` 通过
 
 ### 涉及文件
-- `frontend/src/components/VideoPreviewModal.tsx`
 - `frontend/src/app/page.tsx`
-- `frontend/src/app/publish/page.tsx`
+- `frontend/src/hooks/useHomePersistence.ts`
 
 ---
 
-## 🧭 术语统一 (11:20)
+## 🧩 发布预览与播放修复 (14:10)
 
 ### 内容
-- “视频预览” → “作品预览”
-- “历史视频” → “历史作品”
-- “选择要发布的视频” → “选择要发布的作品”
+- 发布页作品预览兼容签名 URL 与相对路径
+- 参考音频试听统一走 `resolveMediaUrl`
+- 素材/BGM 选择在列表变化时自动回退有效项
+- 录音预览 URL 回收、预览弹窗滚动状态恢复、全局任务提示挂载
+
+### 涉及文件
+- `frontend/src/app/publish/page.tsx`
+- `frontend/src/hooks/useMediaPlayers.ts`
+- `frontend/src/hooks/useBgm.ts`
+- `frontend/src/hooks/useMaterials.ts`
+- `frontend/src/components/home/RefAudioPanel.tsx`
+- `frontend/src/components/VideoPreviewModal.tsx`
+- `frontend/src/app/layout.tsx`
 
 ---
+
+## 🧩 标题同步与长度限制 (15:30)
+
+### 内容
+- 片头标题修改同步写入发布信息标题
+- 标题输入兼容中文输入法，限制 15 字（发布信息同规则）
+
+### 涉及文件
+- `frontend/src/app/page.tsx`
+- `frontend/src/components/home/TitleSubtitlePanel.tsx`
+- `frontend/src/app/publish/page.tsx`

Docs/FRONTEND_DEV.md

@@ -220,6 +220,15 @@ import { formatDate } from '@/lib/media';
 
 ---
 
+## 标题输入规则
+
+- 片头标题与发布信息标题统一限制 15 字。
+- 中文输入法合成阶段不截断，合成结束后才校验长度。
+- 首页片头标题修改会同步写入 `vigent_${storageKey}_publish_title`。
+- 避免使用 `maxLength` 强制截断输入法合成态。
+
+---
+
 ## 新增页面 Checklist
 
 1. [ ] 导入 `import api from '@/lib/axios'`

Docs/FRONTEND_README.md

@@ -33,7 +33,8 @@ ViGent2 的前端界面，采用 Next.js 16 + TailwindCSS 构建。
 - **一键克隆**: 选择参考音频后自动调用 Qwen3-TTS 服务。
 
 ### 4. 字幕与标题 [Day 13 新增]
-- **片头标题**: 可选输入，视频开头显示 3 秒淡入淡出标题。
+- **片头标题**: 可选输入，限制 15 字，视频开头显示 3 秒淡入淡出标题。
+- **标题同步**: 首页片头标题修改会同步到发布信息标题。
 - **逐字高亮字幕**: 卡拉OK效果，默认开启，可关闭。
 - **自动对齐**: 基于 faster-whisper 生成字级别时间戳。
 - **样式预设**: 标题/字幕样式选择 + 预览 + 字号调节 (Day 16)。

Docs/implementation_plan.md

@@ -140,7 +140,7 @@ backend/
 
 | 端点 | 方法 | 功能 |
 |------|------|------|
-| `/api/materials` | POST | 上传素材视频 | ✅ |
+| `/api/materials` | POST | 上传视频素材 | ✅ |
 | `/api/materials` | GET | 获取素材列表 | ✅ |
 | `/api/videos/generate` | POST | 创建视频生成任务 | ✅ |
 | `/api/videos/tasks/{id}` | GET | 查询任务状态 | ✅ |
@@ -164,7 +164,7 @@ background_tasks.add_task(_process_video_generation, task_id, req, user_id)
 
 | 页面 | 功能 |
 |------|------|
-| **素材库** | 上传/管理多场景素材视频 |
+| **素材库** | 上传/管理多场景视频素材 |
 | **生成视频** | 输入文案、选择素材、生成预览 |
 | **任务中心** | 查看生成进度、下载视频 |
 | **发布管理** | 绑定平台、一键发布、定时发布 |

backend/assets/styles/subtitle.json

@@ -2,9 +2,9 @@
   {
     "id": "subtitle_classic_yellow",
     "label": "经典黄字",
-    "font_file": "title/思源黑体/SourceHanSansCN-Bold思源黑体免费.otf",
-    "font_family": "SourceHanSansCN-Bold",
-    "font_size": 52,
+    "font_file": "DingTalk JinBuTi.ttf",
+    "font_family": "DingTalkJinBuTi",
+    "font_size": 60,
     "highlight_color": "#FFE600",
     "normal_color": "#FFFFFF",
     "stroke_color": "#000000",

backend/assets/styles/title.json

@@ -1,4 +1,18 @@
 [
+  {
+    "id": "title_pop",
+    "label": "站酷快乐体",
+    "font_file": "title/站酷快乐体.ttf",
+    "font_family": "ZCoolHappy",
+    "font_size": 90,
+    "color": "#FFFFFF",
+    "stroke_color": "#000000",
+    "stroke_size": 8,
+    "letter_spacing": 5,
+    "top_margin": 62,
+    "font_weight": 900,
+    "is_default": true
+  },
   {
     "id": "title_bold_white",
     "label": "黑体大标题",
@@ -11,7 +25,7 @@
     "letter_spacing": 4,
     "top_margin": 60,
     "font_weight": 900,
-    "is_default": true
+    "is_default": false
   },
   {
     "id": "title_serif_gold",
@@ -40,19 +54,5 @@
     "top_margin": 60,
     "font_weight": 900,
     "is_default": false
-  },
-  {
-    "id": "title_pop",
-    "label": "站酷快乐体",
-    "font_file": "title/站酷快乐体.ttf",
-    "font_family": "ZCoolHappy",
-    "font_size": 74,
-    "color": "#FFFFFF",
-    "stroke_color": "#000000",
-    "stroke_size": 8,
-    "letter_spacing": 5,
-    "top_margin": 62,
-    "font_weight": 900,
-    "is_default": false
   }
 ]

frontend/src/app/page.tsx

@@ -12,6 +12,7 @@ import {
   buildTextShadow,
   formatDate,
 } from "@/lib/media";
+import { clampTitle } from "@/lib/title";
 import { useTitleSubtitleStyles } from "@/hooks/useTitleSubtitleStyles";
 import { useMaterials } from "@/hooks/useMaterials";
 import { useRefAudios } from "@/hooks/useRefAudios";
@@ -19,6 +20,7 @@ import { useBgm } from "@/hooks/useBgm";
 import { useMediaPlayers } from "@/hooks/useMediaPlayers";
 import { useGeneratedVideos } from "@/hooks/useGeneratedVideos";
 import { useHomePersistence } from "@/hooks/useHomePersistence";
+import { useTitleInput } from "@/hooks/useTitleInput";
 import { useAuth } from "@/contexts/AuthContext";
 import { useTask } from "@/contexts/TaskContext";
 import VideoPreviewModal from "@/components/VideoPreviewModal";
@@ -307,6 +309,18 @@ export default function Home() {
     selectedRefAudio,
   });
 
+  const syncTitleToPublish = (value: string) => {
+    if (typeof window !== 'undefined') {
+      localStorage.setItem(`vigent_${storageKey}_publish_title`, value);
+    }
+  };
+
+  const titleInput = useTitleInput({
+    value: videoTitle,
+    onChange: setVideoTitle,
+    onCommit: syncTitleToPublish,
+  });
+
   // 加载素材列表和历史视频
   useEffect(() => {
     if (isAuthLoading) return;
@@ -564,11 +578,11 @@ export default function Home() {
       console.log("[Home] AI生成结果:", data);
 
       // 更新首页标题
-      setVideoTitle(data.title || "");
+      const nextTitle = clampTitle(data.title || "");
+      titleInput.commitValue(nextTitle);
 
       // 同步到发布页 localStorage
       console.log("[Home] 保存到 publish localStorage - title:", data.title, "tags:", data.tags);
-      localStorage.setItem(`vigent_${storageKey}_publish_title`, data.title || "");
       localStorage.setItem(`vigent_${storageKey}_publish_tags`, JSON.stringify(data.tags || []));
 
     } catch (err: any) {
@@ -706,7 +720,9 @@ export default function Home() {
               showStylePreview={showStylePreview}
               onTogglePreview={() => setShowStylePreview((prev) => !prev)}
               videoTitle={videoTitle}
-              onTitleChange={setVideoTitle}
+              onTitleChange={titleInput.handleChange}
+              onTitleCompositionStart={titleInput.handleCompositionStart}
+              onTitleCompositionEnd={titleInput.handleCompositionEnd}
               titleStyles={titleStyles}
               selectedTitleStyleId={selectedTitleStyleId}
               onSelectTitleStyle={setSelectedTitleStyleId}

frontend/src/app/publish/page.tsx

@@ -5,9 +5,11 @@ import useSWR from 'swr';
 import Link from "next/link";
 import api from "@/lib/axios";
 import { getApiBaseUrl, formatDate, resolveMediaUrl, isAbsoluteUrl } from "@/lib/media";
+import { clampTitle } from "@/lib/title";
 import { useAuth } from "@/contexts/AuthContext";
 import AccountSettingsDropdown from "@/components/AccountSettingsDropdown";
 import VideoPreviewModal from "@/components/VideoPreviewModal";
+import { useTitleInput } from "@/hooks/useTitleInput";
 import {
     ArrowLeft,
     RotateCcw,
@@ -38,16 +40,16 @@ interface Video {
     path: string;
 }
 
-export default function PublishPage() {
+export default function PublishPage() {
     const [accounts, setAccounts] = useState<Account[]>([]);
     const [videos, setVideos] = useState<Video[]>([]);
     const [selectedVideo, setSelectedVideo] = useState<string>("");
     const [videoFilter, setVideoFilter] = useState<string>("");
     const [previewVideoUrl, setPreviewVideoUrl] = useState<string | null>(null);
-    const [selectedPlatforms, setSelectedPlatforms] = useState<string[]>([]);
-    const [title, setTitle] = useState<string>("");
-    const [tags, setTags] = useState<string>("");
-    const [isPublishing, setIsPublishing] = useState(false);
+    const [selectedPlatforms, setSelectedPlatforms] = useState<string[]>([]);
+    const [title, setTitle] = useState<string>("");
+    const [tags, setTags] = useState<string>("");
+    const [isPublishing, setIsPublishing] = useState(false);
     const [publishResults, setPublishResults] = useState<any[]>([]);
     const [scheduleMode, setScheduleMode] = useState<"now" | "scheduled">("now");
     const [publishTime, setPublishTime] = useState<string>("");
@@ -57,8 +59,13 @@ export default function PublishPage() {
 
     // 使用全局认证状态
     const { userId, isLoading: isAuthLoading } = useAuth();
-    // 是否已从 localStorage 恢复完成
-    const [isRestored, setIsRestored] = useState(false);
+    // 是否已从 localStorage 恢复完成
+    const [isRestored, setIsRestored] = useState(false);
+
+    const titleInput = useTitleInput({
+        value: title,
+        onChange: setTitle,
+    });
 
     // 加载账号和视频列表
     useEffect(() => {
@@ -81,17 +88,13 @@ export default function PublishPage() {
 
     // 从 localStorage 恢复用户输入（等待认证完成后）
     useEffect(() => {
-        console.log("[Publish] 恢复检查 - isAuthLoading:", isAuthLoading, "userId:", userId);
-        if (isAuthLoading) return;
-
-        console.log("[Publish] 开始从 localStorage 恢复数据，storageKey:", storageKey);
-        // 从 localStorage 恢复用户输入（带用户隔离，未登录用户使用 guest）
-        const savedTitle = localStorage.getItem(`vigent_${storageKey}_publish_title`);
-        const savedTags = localStorage.getItem(`vigent_${storageKey}_publish_tags`);
-
-        console.log("[Publish] localStorage 数据:", { savedTitle, savedTags });
-
-        if (savedTitle) setTitle(savedTitle);
+        if (isAuthLoading) return;
+
+        // 从 localStorage 恢复用户输入（带用户隔离，未登录用户使用 guest）
+        const savedTitle = localStorage.getItem(`vigent_${storageKey}_publish_title`);
+        const savedTags = localStorage.getItem(`vigent_${storageKey}_publish_tags`);
+
+        if (savedTitle) setTitle(clampTitle(savedTitle));
         if (savedTags) {
             // 兼容 JSON 数组格式（AI 生成）和字符串格式（手动输入）
             try {
@@ -106,10 +109,9 @@ export default function PublishPage() {
             }
         }
 
-        // 恢复完成后才允许保存
-        setIsRestored(true);
-        console.log("[Publish] 恢复完成，isRestored = true");
-    }, [storageKey, isAuthLoading]);
+        // 恢复完成后才允许保存
+        setIsRestored(true);
+    }, [storageKey, isAuthLoading]);
 
     // 保存用户输入到 localStorage（恢复完成后才保存，未登录用户也可保存）
     useEffect(() => {
@@ -288,7 +290,7 @@ export default function PublishPage() {
         return videos.filter((v) => v.name.toLowerCase().includes(query));
     }, [videos, videoFilter]);
 
-    return (
+    return (
             <div className="min-h-dvh">
             <VideoPreviewModal
                 onClose={() => setPreviewVideoUrl(null)}
@@ -515,13 +517,15 @@ export default function PublishPage() {
                                     <label className="block text-gray-400 text-sm mb-2">
                                         标题
                                     </label>
-                                    <input
-                                        type="text"
-                                        value={title}
-                                        onChange={(e) => setTitle(e.target.value)}
-                                        placeholder="输入视频标题..."
-                                        className="w-full p-3 bg-black/30 border border-white/10 rounded-xl text-white placeholder-gray-500"
-                                    />
+                                    <input
+                                        type="text"
+                                        value={title}
+                                        onChange={(e) => titleInput.handleChange(e.target.value)}
+                                        onCompositionStart={titleInput.handleCompositionStart}
+                                        onCompositionEnd={(e) => titleInput.handleCompositionEnd(e.currentTarget.value)}
+                                        placeholder="输入视频标题..."
+                                        className="w-full p-3 bg-black/30 border border-white/10 rounded-xl text-white placeholder-gray-500"
+                                    />
                                 </div>
                                 <div>
                                     <label className="block text-gray-400 text-sm mb-2">
@@ -663,5 +667,5 @@ export default function PublishPage() {
                 </div>
             </main>
         </div>
-    );
-}
+    );
+}

frontend/src/components/home/MaterialSelector.tsx

@@ -46,7 +46,7 @@ export function MaterialSelector({
     <div className="bg-white/5 rounded-2xl p-4 sm:p-6 border border-white/10 backdrop-blur-sm">
       <div className="flex justify-between items-center gap-2 mb-4">
         <h2 className="text-base sm:text-lg font-semibold text-white flex items-center gap-2 whitespace-nowrap">
-          📹 选择素材视频
+          📹 视频素材
           <span className="ml-1 text-[11px] sm:text-xs text-gray-400/90 font-normal">
             (上传自拍视频)
           </span>
@@ -112,9 +112,9 @@ export function MaterialSelector({
       ) : materials.length === 0 ? (
         <div className="text-center py-8 text-gray-400">
           <div className="text-5xl mb-4">📁</div>
-          <p>暂无素材视频</p>
+          <p>暂无视频素材</p>
           <p className="text-sm mt-2">
-            点击上方「📤 上传视频」按钮添加素材
+            点击上方「📤 上传视频」按钮添加视频素材
           </p>
         </div>
       ) : (

frontend/src/components/home/TitleSubtitlePanel.tsx

@@ -36,6 +36,8 @@ interface TitleSubtitlePanelProps {
   onTogglePreview: () => void;
   videoTitle: string;
   onTitleChange: (value: string) => void;
+  onTitleCompositionStart?: () => void;
+  onTitleCompositionEnd?: (value: string) => void;
   titleStyles: TitleStyleOption[];
   selectedTitleStyleId: string;
   onSelectTitleStyle: (id: string) => void;
@@ -63,6 +65,8 @@ export function TitleSubtitlePanel({
   onTogglePreview,
   videoTitle,
   onTitleChange,
+  onTitleCompositionStart,
+  onTitleCompositionEnd,
   titleStyles,
   selectedTitleStyleId,
   onSelectTitleStyle,
@@ -209,11 +213,13 @@ export function TitleSubtitlePanel({
       )}
 
       <div className="mb-4">
-        <label className="text-sm text-gray-300 mb-2 block">片头标题（可选）</label>
+        <label className="text-sm text-gray-300 mb-2 block">片头标题（限制15个字）</label>
         <input
           type="text"
           value={videoTitle}
           onChange={(e) => onTitleChange(e.target.value)}
+          onCompositionStart={onTitleCompositionStart}
+          onCompositionEnd={(e) => onTitleCompositionEnd?.(e.currentTarget.value)}
           placeholder="输入视频标题，将在片头显示"
           className="w-full px-3 sm:px-4 py-2 text-sm sm:text-base bg-black/30 border border-white/10 rounded-xl text-white placeholder-gray-500 focus:outline-none focus:border-purple-500 transition-colors"
         />

frontend/src/components/home/VoiceSelector.tsx

@@ -26,7 +26,7 @@ export function VoiceSelector({
   return (
     <div className="bg-white/5 rounded-2xl p-6 border border-white/10 backdrop-blur-sm">
       <h2 className="text-lg font-semibold text-white mb-4 flex items-center gap-2">
-        🎙️ 选择配音方式
+        🎙️ 配音方式
       </h2>
 
       <div className="flex gap-2 mb-4">

frontend/src/hooks/useHomePersistence.ts

@@ -1,4 +1,5 @@
 import { useEffect, useState } from "react";
+import { clampTitle } from "@/lib/title";
 
 interface RefAudio {
   id: string;
@@ -101,7 +102,7 @@ export const useHomePersistence = ({
     const savedEnableBgm = localStorage.getItem(`vigent_${storageKey}_enableBgm`);
 
     setText(savedText || "大家好，欢迎来到我的频道，今天给大家分享一些有趣的内容。");
-    setVideoTitle(savedTitle || "");
+    setVideoTitle(savedTitle ? clampTitle(savedTitle) : "");
     setEnableSubtitles(savedSubtitles !== null ? savedSubtitles === 'true' : true);
     setTtsMode((savedTtsMode as 'edgetts' | 'voiceclone') || 'edgetts');
     setVoice(savedVoice || "zh-CN-YunxiNeural");

frontend/src/hooks/useMaterials.ts

@@ -20,19 +20,15 @@ export const useMaterials = ({
 }: UseMaterialsOptions) => {
   const [materials, setMaterials] = useState<Material[]>([]);
   const [fetchError, setFetchError] = useState<string | null>(null);
-  const [debugData, setDebugData] = useState<string>("");
   const [isUploading, setIsUploading] = useState(false);
   const [uploadProgress, setUploadProgress] = useState(0);
   const [uploadError, setUploadError] = useState<string | null>(null);
-  const [uploadData, setUploadData] = useState<string>("");
 
   const fetchMaterials = useCallback(async () => {
     try {
       setFetchError(null);
-      setDebugData("Loading...");
 
       const { data } = await api.get(`/api/materials?t=${new Date().getTime()}`);
-      setDebugData(JSON.stringify(data).substring(0, 200));
       const nextMaterials = data.materials || [];
       setMaterials(nextMaterials);
 
@@ -45,7 +41,6 @@ export const useMaterials = ({
     } catch (error) {
       console.error("获取素材失败:", error);
       setFetchError(String(error));
-      setDebugData(`Error: ${String(error)}`);
     }
   }, [selectedMaterial, setSelectedMaterial]);
 
@@ -94,7 +89,6 @@ export const useMaterials = ({
       setUploadProgress(100);
       setIsUploading(false);
       fetchMaterials();
-      setUploadData("");
     } catch (err: any) {
       console.error("Upload failed:", err);
       setIsUploading(false);
@@ -108,11 +102,9 @@ export const useMaterials = ({
   return {
     materials,
     fetchError,
-    debugData,
     isUploading,
     uploadProgress,
     uploadError,
-    uploadData,
     setUploadError,
     fetchMaterials,
     deleteMaterial,

frontend/src/hooks/useTitleInput.ts

@@ -0,0 +1,66 @@
+import { useCallback, useEffect, useRef } from "react";
+import { applyTitleLimit, TITLE_MAX_LENGTH } from "@/lib/title";
+
+interface UseTitleInputOptions {
+  value: string;
+  onChange: (value: string) => void;
+  onCommit?: (value: string) => void;
+  maxLength?: number;
+}
+
+export const useTitleInput = ({
+  value,
+  onChange,
+  onCommit,
+  maxLength = TITLE_MAX_LENGTH,
+}: UseTitleInputOptions) => {
+  const isComposingRef = useRef(false);
+  const committedRef = useRef(value);
+
+  useEffect(() => {
+    if (isComposingRef.current) return;
+    committedRef.current = value;
+  }, [value]);
+
+  const commitValue = useCallback(
+    (nextValue: string) => {
+      committedRef.current = nextValue;
+      onChange(nextValue);
+      onCommit?.(nextValue);
+    },
+    [onChange, onCommit]
+  );
+
+  const handleChange = useCallback(
+    (nextValue: string) => {
+      if (isComposingRef.current) {
+        onChange(nextValue);
+        return;
+      }
+      const limited = applyTitleLimit(committedRef.current, nextValue, maxLength);
+      commitValue(limited);
+    },
+    [maxLength, onChange, commitValue]
+  );
+
+  const handleCompositionStart = useCallback(() => {
+    isComposingRef.current = true;
+  }, []);
+
+  const handleCompositionEnd = useCallback(
+    (nextValue: string) => {
+      isComposingRef.current = false;
+      const limited = applyTitleLimit(committedRef.current, nextValue, maxLength);
+      commitValue(limited);
+    },
+    [maxLength, commitValue]
+  );
+
+  return {
+    handleChange,
+    handleCompositionStart,
+    handleCompositionEnd,
+    commitValue,
+    maxLength,
+  };
+};

frontend/src/lib/title.ts

@@ -0,0 +1,14 @@
+export const TITLE_MAX_LENGTH = 15;
+
+export const clampTitle = (value: string, maxLength: number = TITLE_MAX_LENGTH) =>
+  value.slice(0, maxLength);
+
+export const applyTitleLimit = (
+  prev: string,
+  next: string,
+  maxLength: number = TITLE_MAX_LENGTH
+) => {
+  if (next.length <= maxLength) return next;
+  if (prev.length >= maxLength) return prev;
+  return next.slice(0, maxLength);
+};