fix: TinyMCE 允许 style 属性 + 对齐支持扩展到标题和列表

- Editor: valid_elements + extended_valid_elements 保留内联 style
- docx_to_html: 对齐注入覆盖 p/h1-h6/li 块级元素

backend/app/services/document_processor.py

@@ -21,18 +21,18 @@ async def docx_to_html(file_content: bytes) -> str:
         doc = Document(BytesIO(file_content))
         soup = BeautifulSoup(html, "html.parser")
         paragraphs = doc.paragraphs
-        html_paras = soup.find_all("p")
+        html_blocks = soup.find_all(["p", "h1", "h2", "h3", "h4", "h5", "h6", "li"])
 
         for i, para in enumerate(paragraphs):
-            if i >= len(html_paras):
+            if i >= len(html_blocks):
                 break
             if para.alignment and para.alignment in ALIGN_MAP:
                 css = ALIGN_MAP[para.alignment]
-                existing_style = html_paras[i].get("style", "")
+                existing = html_blocks[i].get("style", "")
                 styles = f"text-align:{css}"
-                if existing_style:
-                    styles = existing_style.rstrip(";") + ";" + styles
-                html_paras[i]["style"] = styles
+                if existing:
+                    styles = existing.rstrip(";") + ";" + styles
+                html_blocks[i]["style"] = styles
 
         html = str(soup)
     except Exception:

web/src/pages/TemplateEditor.tsx

@@ -363,6 +363,8 @@ export default function TemplateEditor() {
               toolbar:
                 "undo redo | blocks | bold italic forecolor | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | removeformat | help",
               content_style: "body { font-family: Arial, sans-serif; font-size: 14px; }",
+              valid_elements: "*[*]",
+              extended_valid_elements: "p[style],h1[style],h2[style],h3[style],h4[style],h5[style],h6[style],div[style],span[style],li[style]",
             }}
           />
         </Content>