feat: 文章属性前端完成 — Phase 3

- 写文章页：可见性/类型/转载来源/创作声明/禁止转载 属性表单
- 类型切换联动（转载显示来源，原创显示禁止转载复选框）
- 文章详情页：私密角标、置顶标记、创作声明横幅、转载来源
- 管理后台：置顶/取消置顶操作按钮
- PostService Create/Update 签名扩展接受文章属性
- DTO/接口同步更新

internal/controller/interfaces.go

@@ -42,9 +42,9 @@ type postUseCase interface {
 
 // studioUseCase StudioController 对 PostService 的最小依赖（ISP：9 个方法）
 type studioUseCase interface {
-	Create(userID uint, title, body string) (*model.Post, error)
+	Create(userID uint, title, body, visibility, postType, reprintSource, declaration string, reprintProhibited bool) (*model.Post, error)
 	GetByID(id uint) (*model.Post, error)
-	Update(postID uint, title, body string) error
+	Update(postID uint, title, body, visibility, postType, reprintSource, declaration string, reprintProhibited bool) error
 	Delete(postID uint) error
 	SubmitForAudit(postID uint) error
 	ListByUser(userID uint, status string, page, pageSize int) ([]model.Post, int64, error)

internal/controller/studio_post_api_controller.go

@@ -30,7 +30,7 @@ func (ctrl *StudioController) Create(c *gin.Context) {
 		return
 	}
 
-	post, err := ctrl.postService.Create(uid, req.Title, req.Body)
+	post, err := ctrl.postService.Create(uid, req.Title, req.Body, req.Visibility, req.PostType, req.ReprintSource, req.Declaration, req.ReprintProhibited)
 	if err != nil {
 		common.Error(c, http.StatusInternalServerError, "发布失败")
 		return
@@ -69,7 +69,7 @@ func (ctrl *StudioController) Update(c *gin.Context) {
 		return
 	}
 
-	if err := ctrl.postService.Update(uint(id), req.Title, req.Body); err != nil {
+	if err := ctrl.postService.Update(uint(id), req.Title, req.Body, req.Visibility, req.PostType, req.ReprintSource, req.Declaration, req.ReprintProhibited); err != nil {
 		common.Error(c, http.StatusInternalServerError, "编辑失败")
 		return
 	}

internal/model/dto.go

@@ -32,14 +32,24 @@ type PostListResult struct {
 
 // PostCreateRequest 发帖请求
 type PostCreateRequest struct {
-	Title string `json:"title" binding:"required,min=1,max=200"`
-	Body  string `json:"body" binding:"required,min=1"`
+	Title             string `json:"title" binding:"required,min=1,max=200"`
+	Body              string `json:"body" binding:"required,min=1"`
+	Visibility        string `json:"visibility"`
+	PostType          string `json:"post_type"`
+	ReprintSource     string `json:"reprint_source"`
+	Declaration       string `json:"declaration"`
+	ReprintProhibited bool   `json:"reprint_prohibited"`
 }
 
 // PostUpdateRequest 编辑请求
 type PostUpdateRequest struct {
-	Title string `json:"title" binding:"required,min=1,max=200"`
-	Body  string `json:"body" binding:"required,min=1"`
+	Title             string `json:"title" binding:"required,min=1,max=200"`
+	Body              string `json:"body" binding:"required,min=1"`
+	Visibility        string `json:"visibility"`
+	PostType          string `json:"post_type"`
+	ReprintSource     string `json:"reprint_source"`
+	Declaration       string `json:"declaration"`
+	ReprintProhibited bool   `json:"reprint_prohibited"`
 }
 
 // PostRejectRequest 退回请求

internal/service/post_audit_service.go

@@ -6,7 +6,7 @@ import (
 )
 
 // Update 编辑帖子（权限在 controller 层检查）
-func (s *PostService) Update(postID uint, title, body string) error {
+func (s *PostService) Update(postID uint, title, body string, visibility, postType, reprintSource, declaration string, reprintProhibited bool) error {
 	post, err := s.findPost(postID)
 	if err != nil {
 		return err
@@ -16,6 +16,13 @@ func (s *PostService) Update(postID uint, title, body string) error {
 		return common.ErrPostCannotEdit
 	}
 
+	// 文章属性随时可更新（不影响已发布内容展示）
+	post.Visibility = visibility
+	post.PostType = postType
+	post.ReprintSource = reprintSource
+	post.Declaration = declaration
+	post.ReprintProhibited = reprintProhibited
+
 	// 已通过帖子：编辑内容保存为待审修订，不影响当前展示
 	if post.Status == model.PostStatusApproved {
 		post.PendingTitle = title

internal/service/post_service.go

@@ -68,19 +68,24 @@ func (s *PostService) findPostWithAuthor(id uint) (*model.Post, error) {
 // Create 创建帖子
 // body 为 Vditor 输出的 Markdown，后端直接存储不做 HTML 消毒
 // MD 是纯文本，无 XSS 注入风险；前端渲染时由 Vditor 转 HTML
-func (s *PostService) Create(userID uint, title, body string) (*model.Post, error) {
+func (s *PostService) Create(userID uint, title, body string, visibility, postType, reprintSource, declaration string, reprintProhibited bool) (*model.Post, error) {
 	status := model.PostStatusApproved
 	if s.auditEnabled() {
 		status = model.PostStatusDraft
 	}
 
 	post := &model.Post{
-		Title:        title,
-		Body:         body,
-		Excerpt:      generateExcerpt(body),
-		UserID:       userID,
-		Status:       status,
-		AllowComment: true,
+		Title:             title,
+		Body:              body,
+		Excerpt:           generateExcerpt(body),
+		UserID:            userID,
+		Status:            status,
+		AllowComment:      true,
+		Visibility:        visibility,
+		PostType:          postType,
+		ReprintSource:     reprintSource,
+		Declaration:       declaration,
+		ReprintProhibited: reprintProhibited,
 	}
 	if err := s.repo.Create(post); err != nil {
 		return nil, err