初始提交：姜十三论坛 Jiang13 Forum

轻量自用论坛，Go 单二进制 + React SPA 内嵌 + SQLite。

Co-authored-by: Cursor <cursoragent@cursor.com>

embed_static/templates/post_new.html

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+{{define "post_new.html"}}{{template "layout" .}}{{end}}
+{{define "content"}}
+<h3>发布新帖</h3>
+<form id="postForm">
+  <div class="mb-3">
+    <label class="form-label">选择板块</label>
+    <select name="board_id" class="form-select" required>
+      {{range .Boards}}<option value="{{.ID}}">{{.Name}}</option>{{end}}
+    </select>
+  </div>
+  <div class="mb-3">
+    <label class="form-label">标题</label>
+    <input type="text" name="title" class="form-control" required maxlength="256">
+  </div>
+  <div class="mb-3">
+    <label class="form-label">标签（逗号分隔）</label>
+    <input type="text" name="tags" class="form-control" placeholder="Go,技术,交流">
+  </div>
+  <div class="mb-3">
+    <label class="form-label">内容（支持 HTML 富文本）</label>
+    <textarea name="content" class="form-control" rows="12" required></textarea>
+    <div class="form-text">可使用 &lt;b&gt;、&lt;i&gt;、&lt;a&gt;、&lt;img&gt; 等 HTML 标签</div>
+  </div>
+  <button type="submit" class="btn btn-success">发布</button>
+</form>
+{{end}}
+{{define "scripts"}}
+<script>
+document.getElementById('postForm').addEventListener('submit',function(e){
+  e.preventDefault();
+  apiPost('/api/posts',this,true).then(d=>{
+    if(d.error){showToast(d.error,'danger');return;}
+    location.href='/post/'+d.post_id;
+  });
+});
+</script>
+{{end}}