feat: 实现内容系统 MVC（Post CRUD + 审核流转）
按 content-system.md 设计文档，实现帖子内容系统的最小可行 MVC。 新增： - Model: Post 模型，含 5 种状态（draft/pending/approved/rejected/locked） - Repository: post_repo.go，分页查询（前台 approved 列表 + 后台全状态筛选） - Service: post_service.go，核心业务逻辑（状态流转、Markdown 渲染 Goldmark） - Controller: post_controller + admin_post_controller，SSR 页面 6 个 + API 13 个 - Template: 列表/详情/编辑器/404 + 管理员列表，各配 CSS/JS - 路由: /posts, /posts/:id, /posts/new, /posts/:id/edit, REST API, Admin API - gomod: + github.com/yuin/goldmark v1.8.2 修改： - Main: AutoMigrate Post 表 - Router: deps 注册 PostService/Controller，路由注册 - Nav: 新增“帖子”导航链接 - Admin Sidebar: 新增“内容管理”入口 设计： - 审核开关复用 audit.enabled，开启时帖子为 draft，关闭后直接 approved - 仅 approved 公开可见，作者/admin 可预览非公开状态帖子 - 严格分层 ISP 接口: Controller → postUseCase, Service → postStore, Repo → *PostRepo - 状态保护: pending/locked 禁止编辑，rejected 编辑后自动重置为 draft
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@ -6,6 +6,7 @@
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</button>
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<ul class="nav-links" id="navLinks">
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<li><a href="/">首页</a></li>
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<li><a href="/posts">帖子</a></li>
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{{if .IsLoggedIn}}
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<li>
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<a href="/messages" class="nav-messages" id="messagesBell" title="消息中心">
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14
templates/MetaLab-2026/html/posts/404.html
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14
templates/MetaLab-2026/html/posts/404.html
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@ -0,0 +1,14 @@
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{{template "layout/header.html" .}}
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<body>
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{{template "layout/nav.html" .}}
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<div class="container">
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<div class="error-404">
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<h1>404</h1>
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<p>帖子不存在或已被删除</p>
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<a href="/posts" class="btn btn-primary">返回帖子列表</a>
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</div>
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</div>
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{{template "layout/footer.html" .}}
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<script src="/static/js/common.js"></script>
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</body>
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</html>
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58
templates/MetaLab-2026/html/posts/index.html
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58
templates/MetaLab-2026/html/posts/index.html
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{{template "layout/header.html" .}}
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<body>
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{{template "layout/nav.html" .}}
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<div class="container posts-container">
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<div class="posts-header">
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<h1>社区帖子</h1>
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{{if .IsLoggedIn}}
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<a href="/posts/new" class="btn btn-primary">撰写帖子</a>
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{{end}}
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</div>
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{{if .Error}}
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<div class="error-message">{{.Error}}</div>
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{{end}}
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{{if .Keyword}}
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<div class="search-hint">搜索：<strong>{{.Keyword}}</strong></div>
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{{end}}
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<div class="posts-list">
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{{if eq (len .Posts) 0}}
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<div class="empty-state">暂无帖子</div>
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{{else}}
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{{range .Posts}}
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<article class="post-card">
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<h2 class="post-card-title">
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<a href="/posts/{{.ID}}">{{.Title}}</a>
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</h2>
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<div class="post-card-meta">
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<span class="post-author">{{.AuthorName}}</span>
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<span class="post-time">{{.CreatedAt.Format "2006-01-02 15:04"}}</span>
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</div>
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<p class="post-card-summary">{{printf "%.200s" .Body}}</p>
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</article>
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{{end}}
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{{end}}
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</div>
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{{if gt .TotalPages 1}}
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<div class="pagination">
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{{if gt .Page 1}}
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<a href="?page={{.PrevPage}}{{if .Keyword}}&keyword={{.Keyword}}{{end}}" class="page-link">上一页</a>
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{{end}}
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<span class="page-info">第 {{.Page}} / {{.TotalPages}} 页 (共 {{.Total}} 条)</span>
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{{if lt .Page .TotalPages}}
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<a href="?page={{.NextPage}}{{if .Keyword}}&keyword={{.Keyword}}{{end}}" class="page-link">下一页</a>
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{{end}}
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</div>
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{{end}}
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</div>
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{{template "layout/footer.html" .}}
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<script src="/static/js/common.js"></script>
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</body>
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</html>
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39
templates/MetaLab-2026/html/posts/new.html
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39
templates/MetaLab-2026/html/posts/new.html
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{{template "layout/header.html" .}}
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<body>
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{{template "layout/nav.html" .}}
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<div class="container editor-container">
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<h1 class="editor-title">{{if .Post}}编辑帖子{{else}}撰写帖子{{end}}</h1>
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<form id="postForm" class="post-form">
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<input type="hidden" id="postId" value="{{if .Post}}{{.Post.ID}}{{end}}">
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<div class="form-group">
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<label for="postTitle">标题</label>
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<input type="text" id="postTitle" class="form-input" value="{{if .Post}}{{.Post.Title}}{{end}}" maxlength="200" required>
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</div>
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<div class="form-group">
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<label for="postBody">正文 (Markdown)</label>
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<textarea id="postBody" class="form-textarea" rows="20" required>{{if .Post}}{{.Post.Body}}{{end}}</textarea>
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</div>
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<div class="editor-actions">
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<button type="button" id="previewBtn" class="btn btn-secondary">预览</button>
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<button type="submit" class="btn btn-primary">{{if .Post}}保存修改{{else}}发布帖子{{end}}</button>
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</div>
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</form>
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<div id="previewArea" class="post-preview" style="display:none;">
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<h3>预览</h3>
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<div id="previewContent" class="post-detail-body"></div>
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</div>
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</div>
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{{template "layout/footer.html" .}}
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{{if .ExtraJS}}<script src="{{.ExtraJS}}"></script>{{end}}
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<script src="/static/js/common.js"></script>
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</body>
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</html>
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50
templates/MetaLab-2026/html/posts/show.html
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50
templates/MetaLab-2026/html/posts/show.html
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{{template "layout/header.html" .}}
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<body>
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{{template "layout/nav.html" .}}
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<div class="container post-detail">
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<article class="post-article">
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<header class="post-detail-header">
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<h1 class="post-detail-title">{{.Post.Title}}</h1>
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<div class="post-detail-meta">
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<span class="post-author">{{.Post.AuthorName}}</span>
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<span class="post-time">{{.Post.CreatedAt.Format "2006-01-02 15:04"}}</span>
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{{if ne .Post.Status "approved"}}
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<span class="post-status post-status-{{.Post.Status}}">{{printf "%s" .Post.Status}}</span>
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{{end}}
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</div>
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</header>
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<div class="post-detail-body">
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{{.Post.BodyHTML}}
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{{/* 如果 BodyHTML 为空，直接显示原文 */}}
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</div>
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{{if not .Post.BodyHTML}}
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<div class="post-detail-body-raw">{{.Post.Body}}</div>
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{{end}}
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{{if .Post.RejectReason}}
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<div class="post-reject-reason">
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<strong>退回理由：</strong>{{.Post.RejectReason}}
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</div>
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{{end}}
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</article>
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{{if .IsLoggedIn}}
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<div class="post-actions">
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{{if and $.Post (or (eq $.Post.UserID $.UID) $.CanAccessAdmin) (ne $.Post.Status "pending") (ne $.Post.Status "locked")}}
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<a href="/posts/{{$.Post.ID}}/edit" class="btn btn-secondary">编辑</a>
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{{end}}
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{{if $.CanAccessAdmin}}
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<a href="/admin/posts" class="btn btn-secondary">管理</a>
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{{end}}
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</div>
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{{end}}
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</div>
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{{template "layout/footer.html" .}}
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<script src="/static/js/common.js"></script>
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</body>
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</html>
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