feat(health,ai): 后端服务优化 + 媒体文件处理

- erp-health: article/banner/consultation/media 服务层优化
- erp-ai: analysis/insight/prompt 服务增强
- erp-auth: auth/role/token 服务改进
- erp-workflow: executor 执行引擎修复
- erp-plugin: 服务层改进
- 新增媒体上传文件样例

crates/erp-health/src/handler/article_handler.rs

@@ -72,6 +72,15 @@ pub async fn list_public_articles(
     Ok(Json(ApiResponse::ok(result)))
 }
 
+/// GET /public/articles/{id} — 公开文章详情（无需认证，仅返回已发布文章）
+pub async fn get_public_article(
+    State(state): State<HealthState>,
+    Path(id): Path<uuid::Uuid>,
+) -> Result<Json<ApiResponse<ArticleResp>>, AppError> {
+    let result = article_service::get_public_article(&state, id).await?;
+    Ok(Json(ApiResponse::ok(result)))
+}
+
 pub async fn get_article<S>(
     State(state): State<HealthState>,
     Extension(ctx): Extension<TenantContext>,