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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>实施计划 — 任务卡片评论串</title>
<style>
:root {
--ivory: #FAF9F5;
--slate: #141413;
--clay: #D97757;
--oat: #E3DACC;
--olive: #788C5D;
--gray-150: #F0EEE6;
--gray-300: #D1CFC5;
--gray-500: #87867F;
--gray-700: #3D3D3A;
--white: #FFFFFF;
--serif: ui-serif, Georgia, 'Times New Roman', serif;
--sans: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
--mono: ui-monospace, 'SF Mono', Menlo, Monaco, monospace;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
font-family: var(--sans);
background: var(--ivory);
color: var(--gray-700);
line-height: 1.55;
padding: 56px 32px 120px;
-webkit-font-smoothing: antialiased;
}
.page { max-width: 1120px; margin: 0 auto; }
/* ---------- header ---------- */
header.page-head { margin-bottom: 48px; max-width: 820px; }
.eyebrow {
font-size: 12px;
letter-spacing: 0.08em;
text-transform: uppercase;
color: var(--gray-500);
margin-bottom: 12px;
}
h1 {
font-family: var(--serif);
font-weight: 500;
font-size: 38px;
line-height: 1.15;
color: var(--slate);
margin-bottom: 18px;
letter-spacing: -0.01em;
}
.prompt-box {
background: var(--gray-150);
border: 1.5px solid var(--gray-300);
border-radius: 12px;
padding: 16px 20px;
font-size: 14.5px;
color: var(--gray-700);
}
.prompt-box .label {
font-family: var(--mono);
font-size: 11px;
text-transform: uppercase;
letter-spacing: 0.06em;
color: var(--gray-500);
display: block;
margin-bottom: 6px;
}
/* ---------- section chrome ---------- */
section { margin-bottom: 64px; }
.sec-head {
display: flex;
align-items: baseline;
gap: 14px;
margin-bottom: 8px;
}
.sec-head .num {
font-family: var(--mono);
font-size: 12px;
background: var(--oat);
color: var(--slate);
padding: 3px 9px;
border-radius: 8px;
}
.sec-head h2 {
font-family: var(--serif);
font-weight: 500;
font-size: 26px;
color: var(--slate);
letter-spacing: -0.01em;
}
.sec-intro {
font-size: 14.5px;
color: var(--gray-500);
max-width: 720px;
margin-bottom: 28px;
}
/* ---------- summary strip ---------- */
.summary {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 16px;
margin-bottom: 64px;
}
@media (max-width: 900px) { .summary { grid-template-columns: repeat(2, 1fr); } }
.summary .cell {
background: var(--white);
border: 1.5px solid var(--gray-300);
border-radius: 12px;
padding: 18px 20px;
}
.summary .k {
font-family: var(--mono);
font-size: 11px;
text-transform: uppercase;
letter-spacing: 0.06em;
color: var(--gray-500);
margin-bottom: 6px;
}
.summary .v {
font-size: 17px;
color: var(--slate);
font-weight: 600;
}
.summary .v.accent { color: var(--clay); }
/* ---------- milestone timeline ---------- */
.milestones { display: flex; flex-direction: column; gap: 0; }
.milestone {
display: grid;
grid-template-columns: 120px 28px 1fr;
gap: 0 18px;
position: relative;
}
.milestone .when {
text-align: right;
font-family: var(--mono);
font-size: 12px;
color: var(--gray-500);
padding-top: 4px;
}
.milestone .dot-col {
display: flex;
flex-direction: column;
align-items: center;
}
.milestone .dot {
width: 14px; height: 14px;
border-radius: 50%;
background: var(--white);
border: 3px solid var(--clay);
margin-top: 4px;
flex-shrink: 0;
}
.milestone .dot.done { background: var(--olive); border-color: var(--olive); }
.milestone .line {
width: 2px;
flex: 1;
background: var(--gray-300);
margin: 4px 0;
}
.milestone:last-child .line { display: none; }
.milestone .body { padding-bottom: 36px; }
.milestone .body h3 {
font-family: var(--serif);
font-weight: 500;
font-size: 19px;
color: var(--slate);
margin-bottom: 4px;
}
.milestone .body p { font-size: 14px; color: var(--gray-500); margin-bottom: 10px; max-width: 620px; }
.milestone .tags { display: flex; gap: 8px; flex-wrap: wrap; }
.milestone .tag {
font-family: var(--mono);
font-size: 11.5px;
background: var(--gray-150);
border: 1px solid var(--gray-300);
border-radius: 6px;
padding: 3px 8px;
color: var(--gray-700);
}
/* ---------- data flow diagram ---------- */
.diagram {
background: var(--white);
border: 1.5px solid var(--gray-300);
border-radius: 12px;
padding: 28px;
overflow-x: auto;
}
.diagram svg { display: block; min-width: 760px; }
.diagram text { font-family: var(--mono); }
.caption { font-size: 13px; color: var(--gray-500); margin-top: 12px; }
/* ---------- mockups ---------- */
.mocks {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 28px;
}
@media (max-width: 900px) { .mocks { grid-template-columns: 1fr; } }
.mock {
background: var(--white);
border: 1.5px solid var(--gray-300);
border-radius: 12px;
overflow: hidden;
}
.mock .mock-label {
padding: 12px 18px;
border-bottom: 1.5px solid var(--gray-300);
font-family: var(--mono);
font-size: 11.5px;
text-transform: uppercase;
letter-spacing: 0.06em;
color: var(--gray-500);
background: var(--gray-150);
}
.mock .mock-body { padding: 22px; }
/* task card mock */
.card-mock {
border: 1.5px solid var(--gray-300);
border-radius: 10px;
padding: 16px;
background: var(--ivory);
}
.card-mock .cm-title { font-weight: 600; font-size: 15px; color: var(--slate); margin-bottom: 4px; }
.card-mock .cm-meta { font-size: 12px; color: var(--gray-500); margin-bottom: 14px; }
.card-mock .cm-divider { border-top: 1px dashed var(--gray-300); margin: 14px 0; }
.thread { display: flex; flex-direction: column; gap: 12px; }
.comment { display: flex; gap: 10px; }
.comment .avatar {
width: 26px; height: 26px; border-radius: 50%;
background: var(--oat);
flex-shrink: 0;
display: flex; align-items: center; justify-content: center;
font-size: 11px; font-weight: 600; color: var(--slate);
}
.comment .avatar.alt { background: var(--olive); color: var(--white); }
.comment .bubble { flex: 1; }
.comment .author { font-size: 12px; font-weight: 600; color: var(--slate); }
.comment .author .time { font-weight: 400; color: var(--gray-500); margin-left: 6px; }
.comment .text { font-size: 13px; color: var(--gray-700); margin-top: 2px; }
.comment .reply-link { font-size: 11.5px; color: var(--clay); margin-top: 4px; cursor: default; }
.comment.nested { margin-left: 36px; }
.composer {
display: flex; gap: 10px; align-items: center;
margin-top: 6px;
}
.composer .field {
flex: 1;
border: 1.5px solid var(--gray-300);
border-radius: 8px;
padding: 8px 12px;
font-size: 13px;
color: var(--gray-500);
background: var(--white);
}
.composer .send {
background: var(--clay);
color: var(--white);
border-radius: 8px;
padding: 8px 14px;
font-size: 13px;
font-weight: 600;
}
/* sidebar digest mock */
.digest { display: flex; flex-direction: column; gap: 10px; }
.digest .row {
display: flex; gap: 10px; align-items: flex-start;
padding: 10px 12px;
background: var(--ivory);
border: 1.5px solid var(--gray-300);
border-radius: 8px;
}
.digest .row.unread { border-left: 3px solid var(--clay); }
.digest .mini-av {
width: 22px; height: 22px; border-radius: 50%;
background: var(--oat);
flex-shrink: 0;
font-size: 10px; font-weight: 600; color: var(--slate);
display: flex; align-items: center; justify-content: center;
}
.digest .txt { font-size: 12.5px; color: var(--gray-700); line-height: 1.45; }
.digest .txt strong { color: var(--slate); }
.digest .txt .on { color: var(--gray-500); }
/* ---------- code panel ---------- */
.code-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
@media (max-width: 980px) { .code-grid { grid-template-columns: 1fr; } }
.code-block { display: flex; flex-direction: column; gap: 10px; }
.code-block .file-label {
font-family: var(--mono);
font-size: 12px;
color: var(--gray-500);
}
.code {
background: var(--slate);
border-radius: 12px;
padding: 18px 20px;
overflow-x: auto;
flex: 1;
}
.code pre {
font-family: var(--mono);
font-size: 12.5px;
line-height: 1.65;
color: #E8E6DE;
white-space: pre;
}
.code .kw { color: var(--clay); }
.code .str { color: var(--olive); }
.code .cm { color: var(--gray-500); }
.code .fn { color: #C9B98A; }
/* ---------- risk table ---------- */
.risks {
border: 1.5px solid var(--gray-300);
border-radius: 12px;
overflow: hidden;
background: var(--white);
}
.risks .row {
display: grid;
grid-template-columns: 1.6fr 90px 1.6fr;
gap: 0;
}
@media (max-width: 780px) { .risks .row { grid-template-columns: 1fr; } }
.risks .row + .row { border-top: 1.5px solid var(--gray-300); }
.risks .cell { padding: 14px 18px; font-size: 13.5px; }
.risks .cell + .cell { border-left: 1.5px solid var(--gray-300); }
@media (max-width: 780px) { .risks .cell + .cell { border-left: none; border-top: 1px dashed var(--gray-300); } }
.risks .head { background: var(--gray-150); font-weight: 600; color: var(--slate); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
.sev {
display: inline-block;
font-family: var(--mono);
font-size: 11px;
padding: 2px 8px;
border-radius: 6px;
font-weight: 600;
}
.sev.high { background: #F3D9CC; color: #8A3B1E; }
.sev.med { background: var(--oat); color: var(--slate); }
.sev.low { background: #E4E9DC; color: #4B5C39; }
/* ---------- open questions ---------- */
.open-q { display: flex; flex-direction: column; gap: 14px; max-width: 820px; }
.q {
background: var(--white);
border: 1.5px solid var(--gray-300);
border-left: 4px solid var(--clay);
border-radius: 10px;
padding: 16px 20px;
}
.q .qt { font-weight: 600; font-size: 15px; color: var(--slate); margin-bottom: 4px; }
.q .qd { font-size: 13.5px; color: var(--gray-500); }
.q .owner {
font-family: var(--mono);
font-size: 11.5px;
color: var(--gray-500);
margin-top: 8px;
}
</style>
</head>
<body>
<div class="page">
<header class="page-head">
<div class="eyebrow">实施计划 · Acme Web 客户端</div>
<h1>任务卡片上的评论串</h1>
<div class="prompt-box">
<span class="label">提示词</span>
为任务卡片添加评论串功能创建一份详尽的实施计划。包含原型图、从客户端到持久层的数据流、我需要写的关键代码、以及风险表。要能在手机上快速浏览，我会直接把它交给实现者。
</div>
</header>
<!-- ============================================================= -->
<div class="summary">
<div class="cell"><div class="k">工作量</div><div class="v accent">~2 weeks</div></div>
<div class="cell"><div class="k">涉及模块</div><div class="v">3 packages</div></div>
<div class="cell"><div class="k">新增表</div><div class="v">2</div></div>
<div class="cell"><div class="k">功能开关</div><div class="v">task_comments_v1</div></div>
</div>
<!-- ============================================================= -->
<section>
<div class="sec-head"><span class="num">01</span><h2>里程碑</h2></div>
<p class="sec-intro">分四个切片交付，每个可独立评审，均在功能开关后面。切片 4 之前用户看不到任何变化。</p>
<div class="milestones">
<div class="milestone">
<div class="when">Week 1 · Mon–Tue</div>
<div class="dot-col"><span class="dot done"></span><span class="line"></span></div>
<div class="body">
<h3>Schema 与 API 契约</h3>
<p>新建 <code>comments</code> 和 <code>comment_reads</code> 表、迁移脚本、tRPC 路由桩。没有 UI。先评审契约，通过后才开始其他工作。</p>
<div class="tags"><span class="tag">packages/db</span><span class="tag">packages/api</span><span class="tag">migration 0042</span></div>
</div>
</div>
<div class="milestone">
<div class="when">Week 1 · Wed–Fri</div>
<div class="dot-col"><span class="dot"></span><span class="line"></span></div>
<div class="body">
<h3>评论串组件与编辑器</h3>
<p>静态 <code><CommentThread></code> 从 fixtures 渲染。提交时乐观插入，失败时回滚，只支持一层嵌套。</p>
<div class="tags"><span class="tag">apps/web</span><span class="tag">storybook</span></div>
</div>
</div>
<div class="milestone">
<div class="when">Week 2 · Mon–Wed</div>
<div class="dot-col"><span class="dot"></span><span class="line"></span></div>
<div class="body">
<h3>实时扩散与未读状态</h3>
<p>将打开的卡片订阅到它的评论频道。跟踪每用户的读取游标，让侧边栏不用额外查询就能显示未读数。</p>
<div class="tags"><span class="tag">packages/realtime</span><span class="tag">apps/web</span></div>
</div>
</div>
<div class="milestone">
<div class="when">Week 2 · Thu–Fri</div>
<div class="dot-col"><span class="dot"></span><span class="line"></span></div>
<div class="body">
<h3>通知、开关灰度、文档</h3>
<p>@提及检测 → 通知行，邮件摘要回退，将 <code>task_comments_v1</code> 灰度到内部，然后三天内 10% → 100%。</p>
<div class="tags"><span class="tag">packages/notify</span><span class="tag">growthbook</span></div>
</div>
</div>
</div>
</section>
<!-- ============================================================= -->
<section>
<div class="sec-head"><span class="num">02</span><h2>数据流</h2></div>
<p class="sec-intro">左侧是乐观写入路径，右侧是实时扩散。读取游标更新是 fire-and-forget，不会阻塞评论串的渲染。</p>
<div class="diagram">
<svg viewBox="0 0 860 340" xmlns="http://www.w3.org/2000/svg">
<defs>
<marker id="arrow" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse">
<path d="M0,0 L10,5 L0,10 z" fill="#87867F"/>
</marker>
<marker id="arrowClay" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse">
<path d="M0,0 L10,5 L0,10 z" fill="#D97757"/>
</marker>
</defs>
<!-- boxes -->
<g font-size="12" fill="#141413">
<rect x="20" y="20" width="180" height="54" rx="10" fill="#FFFFFF" stroke="#D1CFC5" stroke-width="1.5"/>
<text x="110" y="43" text-anchor="middle" font-weight="600"><CommentComposer></text>
<text x="110" y="60" text-anchor="middle" fill="#87867F" font-size="10.5">apps/web</text>
<rect x="20" y="150" width="180" height="54" rx="10" fill="#FFFFFF" stroke="#D1CFC5" stroke-width="1.5"/>
<text x="110" y="173" text-anchor="middle" font-weight="600">React Query cache</text>
<text x="110" y="190" text-anchor="middle" fill="#87867F" font-size="10.5">optimistic insert</text>
<rect x="340" y="150" width="180" height="54" rx="10" fill="#FFFFFF" stroke="#D1CFC5" stroke-width="1.5"/>
<text x="430" y="173" text-anchor="middle" font-weight="600">comments.create</text>
<text x="430" y="190" text-anchor="middle" fill="#87867F" font-size="10.5">tRPC · packages/api</text>
<rect x="340" y="266" width="180" height="54" rx="10" fill="#141413" stroke="#141413"/>
<text x="430" y="289" text-anchor="middle" font-weight="600" fill="#FAF9F5">comments table</text>
<text x="430" y="306" text-anchor="middle" fill="#C9B98A" font-size="10.5">postgres · packages/db</text>
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<text x="750" y="173" text-anchor="middle" font-weight="600">realtime channel</text>
<text x="750" y="190" text-anchor="middle" fill="#87867F" font-size="10.5">task:{id}:comments</text>
<rect x="660" y="20" width="180" height="54" rx="10" fill="#FFFFFF" stroke="#D1CFC5" stroke-width="1.5"/>
<text x="750" y="43" text-anchor="middle" font-weight="600">Other viewers</text>
<text x="750" y="60" text-anchor="middle" fill="#87867F" font-size="10.5">subscribed cards</text>
<rect x="660" y="266" width="180" height="54" rx="10" fill="#FFFFFF" stroke="#D1CFC5" stroke-width="1.5"/>
<text x="750" y="289" text-anchor="middle" font-weight="600">notify worker</text>
<text x="750" y="306" text-anchor="middle" fill="#87867F" font-size="10.5">@mentions → queue</text>
</g>
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<g stroke="#87867F" stroke-width="1.5" fill="none">
<path d="M110 74 L110 150" marker-end="url(#arrow)"/>
<path d="M200 177 L340 177" marker-end="url(#arrow)"/>
<path d="M430 204 L430 266" marker-end="url(#arrow)"/>
<path d="M520 293 L660 293" marker-end="url(#arrow)"/>
</g>
<g stroke="#D97757" stroke-width="1.5" fill="none" stroke-dasharray="5 4">
<path d="M520 177 L660 177" marker-end="url(#arrowClay)"/>
<path d="M750 150 L750 74" marker-end="url(#arrowClay)"/>
<path d="M660 162 C 540 120, 280 120, 205 162" marker-end="url(#arrowClay)"/>
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<text x="118" y="118">submit (id=temp)</text>
<text x="240" y="170">mutate</text>
<text x="438" y="240">INSERT + read cursor</text>
<text x="548" y="286">enqueue</text>
<text x="548" y="172" fill="#D97757">broadcast row</text>
<text x="758" y="118" fill="#D97757">live append</text>
<text x="360" y="112" fill="#D97757">reconcile temp id → real id</text>
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</svg>
<p class="caption">Solid = request/response path. Dashed clay = realtime fan-out. The composer never waits on the dashed path.</p>
</div>
</section>
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<section>
<div class="sec-head"><span class="num">03</span><h2>原型图</h2></div>
<p class="sec-intro">不是像素级完稿，只要评审者和我对嵌套深度、编辑器位置和侧边栏摘要的样子达成一致就行。</p>
<div class="mocks">
<div class="mock">
<div class="mock-label">A · 任务卡片内的评论串</div>
<div class="mock-body">
<div class="card-mock">
<div class="cm-title">上线引导页空状态重写</div>
<div class="cm-meta">BIR-1142 · Assigned to Priya · Due Fri</div>
<div class="cm-divider"></div>
<div class="thread">
<div class="comment">
<div class="avatar">JM</div>
<div class="bubble">
<div class="author">Jonah M. <span class="time">2h ago</span></div>
<div class="text">工作区已经有项目时，插图要不要切换？“从这里开始”的图显示两次感觉很奇怪。</div>
<div class="reply-link">Reply</div>
</div>
</div>
<div class="comment nested">
<div class="avatar alt">PS</div>
<div class="bubble">
<div class="author">Priya S. <span class="time">40m ago</span></div>
<div class="text">好眼力，我会用 <code>projects.count > 0</code> 做条件判断，回退到简洁版本。</div>
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<div class="composer">
<div class="field">Add a comment…</div>
<div class="send">Post</div>
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<div class="mock">
<div class="mock-label">B · 侧边栏未读摘要</div>
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<div class="digest">
<div class="row unread">
<div class="mini-av">JM</div>
<div class="txt"><strong>Jonah</strong> 评论了 <span class="on">BIR-1142</span> — “插图要不要切换…”</div>
</div>
<div class="row unread">
<div class="mini-av">AK</div>
<div class="txt"><strong>Aiko</strong> 提及了你 <span class="on">BIR-1098</span> — “@priya 你能确认一下这里的文案吗？”</div>
</div>
<div class="row">
<div class="mini-av">RW</div>
<div class="txt"><strong>Rowan</strong> 回复了 <span class="on">BIR-0971</span> — “已合并，感谢快速处理。”</div>
</div>
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</div>
</div>
</div>
</section>
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<section>
<div class="sec-head"><span class="num">04</span><h2>关键代码</h2></div>
<p class="sec-intro">最容易写错的两块：迁移脚本（软删除、读取游标）和乐观 mutation（临时 id 调和）。</p>
<div class="code-grid">
<div class="code-block">
<div class="file-label">packages/db/migrations/0042_comments.sql</div>
<div class="code"><pre><span class="kw">create table</span> <span class="fn">comments</span> (
id uuid <span class="kw">primary key default</span> gen_random_uuid(),
task_id uuid <span class="kw">not null references</span> tasks(id),
parent_id uuid <span class="kw">references</span> comments(id), <span class="cm">-- one level only,</span>
<span class="cm">-- enforced in API</span>
author_id uuid <span class="kw">not null references</span> users(id),
body text <span class="kw">not null</span>,
created_at timestamptz <span class="kw">not null default</span> now(),
deleted_at timestamptz <span class="cm">-- soft delete</span>
);
<span class="kw">create table</span> <span class="fn">comment_reads</span> (
task_id uuid <span class="kw">not null references</span> tasks(id),
user_id uuid <span class="kw">not null references</span> users(id),
read_up_to timestamptz <span class="kw">not null</span>,
<span class="kw">primary key</span> (task_id, user_id)
);
<span class="kw">create index</span> <span class="fn">comments_task_created</span>
<span class="kw">on</span> comments (task_id, created_at);</pre></div>
</div>
<div class="code-block">
<div class="file-label">apps/web/hooks/useAddComment.ts</div>
<div class="code"><pre><span class="kw">export function</span> <span class="fn">useAddComment</span>(taskId: string) {
<span class="kw">const</span> qc = useQueryClient();
<span class="kw">return</span> trpc.comments.create.<span class="fn">useMutation</span>({
<span class="fn">onMutate</span>: <span class="kw">async</span> (input) => {
<span class="kw">const</span> temp = { ...input, id: <span class="str">`temp-${nanoid()}`</span>,
createdAt: <span class="kw">new</span> Date(), pending: <span class="kw">true</span> };
qc.<span class="fn">setQueryData</span>(key(taskId), (prev) =>
[...(prev ?? []), temp]);
<span class="kw">return</span> { tempId: temp.id };
},
<span class="fn">onSuccess</span>: (row, _v, ctx) => {
<span class="cm">// reconcile temp id → real id so the</span>
<span class="cm">// realtime append doesn't duplicate it</span>
qc.<span class="fn">setQueryData</span>(key(taskId), (prev) =>
prev.map((c) => c.id === ctx.tempId ? row : c));
},
<span class="fn">onError</span>: (_e, _v, ctx) => {
qc.<span class="fn">setQueryData</span>(key(taskId), (prev) =>
prev.filter((c) => c.id !== ctx.tempId));
},
});
}</pre></div>
</div>
</div>
</section>
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<section>
<div class="sec-head"><span class="num">05</span><h2>风险与缓解措施</h2></div>
<div class="risks">
<div class="row">
<div class="cell head">风险</div>
<div class="cell head">严重度</div>
<div class="cell head">缓解措施</div>
</div>
<div class="row">
<div class="cell">实时重复：socket 追加与 HTTP 响应竞争，导致临时 id 调和冲突。</div>
<div class="cell"><span class="sev high">HIGH</span></div>
<div class="cell">Dedupe on server-assigned <code>id</code> in the cache updater; socket payload carries the real id, temp rows are filtered on reconcile.</div>
</div>
<div class="row">
<div class="cell">用户在另一台设备上读了评论串时，未读计数会过期。</div>
<div class="cell"><span class="sev med">MED</span></div>
<div class="cell">Broadcast <code>comment_reads</code> upserts on the same channel; client treats its own cursor as max(local, remote).</div>
</div>
<div class="row">
<div class="cell">Mention detection false-positives on pasted markdown (<code>@media</code>, <code>@2x</code>).</div>
<div class="cell"><span class="sev low">LOW</span></div>
<div class="cell">写入时仅对工作区成员解析提及，存储解析后的用户 id，读取时永不重新解析。</div>
</div>
</div>
</section>
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<section>
<div class="sec-head"><span class="num">06</span><h2>待定问题</h2></div>
<div class="open-q">
<div class="q">
<div class="qt">允许编辑，还是只能删除后重发？</div>
<div class="qd">编辑需要一个 <code>edited_at</code> 列和“已编辑”标记。删除后重发更简单，但会丢失回复锡点。倾向于 v1 只支持删除。</div>
<div class="owner">Decide with · design, before slice 2</div>
</div>
<div class="q">
<div class="qt">用户关闭 App 时的邮件摘要频率</div>
<div class="qd">每次提及都立即发邮件会很吵。建议：按 15 分钟窗口批量发送，每个任务合并为一封邮件，并遵守现有设置表中的勿扰时段。</div>
<div class="owner">Decide with · platform, before slice 4</div>
</div>
</div>
</section>
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