refactor: 文件行数超标拆解（Service + Controller 9/16 完成）

- Service 层：energy_service → energize/operations/admin/query 四文件
- Service 层：post_service → helpers/audit + 核心 CRUD 保留
- Service 层：favorite_service → items + 核心文件夹操作保留
- Service 层：auth_service → password + 核心注册/登录保留
- Service 层：notification_service → notify + 核心列表/已读保留
- Service 层：audit_service → review + 核心列表/详情保留
- Controller 层：studio_controller → page/write/api/post_api/action 五文件
- Controller 层：post_controller → page/api/upload 三文件
- Controller 层：comment_controller → list/write/action/upload 四文件
- 清理未使用导入（notification_service.go 移除 fmt）

internal/controller/post_page_controller.go

@@ -0,0 +1,124 @@
+package controller
+
+import (
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"metazone.cc/metalab/internal/common"
+	"metazone.cc/metalab/internal/model"
+
+	"github.com/gin-gonic/gin"
+)
+
+// ListPage 帖子列表页
+func (ctrl *PostController) ListPage(c *gin.Context) {
+	keyword := c.Query("keyword")
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
+
+	posts, total, err := ctrl.postService.List(keyword, page, pageSize)
+	if err != nil {
+		c.HTML(http.StatusOK, "posts/index.html", common.BuildPageData(c, gin.H{
+			"Title": "社区帖子",
+			"Error": "加载帖子列表失败",
+		}))
+		return
+	}
+
+	totalPages := common.PageCount(total, pageSize)
+	prevPage := page - 1
+	if prevPage < 1 {
+		prevPage = 1
+	}
+	nextPage := page + 1
+	if nextPage > totalPages {
+		nextPage = totalPages
+	}
+
+	c.HTML(http.StatusOK, "posts/index.html", common.BuildPageData(c, gin.H{
+		"Title":      "社区帖子",
+		"Posts":      posts,
+		"Total":      total,
+		"Page":       page,
+		"TotalPages": totalPages,
+		"PrevPage":   prevPage,
+		"NextPage":   nextPage,
+		"Keyword":    keyword,
+		"ExtraCSS":   "/static/css/posts.css",
+	}))
+}
+
+// ShowPage 帖子详情页
+func (ctrl *PostController) ShowPage(c *gin.Context) {
+	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
+	if err != nil {
+		c.HTML(http.StatusNotFound, "posts/404.html", common.BuildPageData(c, gin.H{
+			"Title":    "未找到",
+			"ExtraCSS": "/static/css/posts.css",
+		}))
+		return
+	}
+
+	post, err := ctrl.postService.GetByID(uint(id))
+	if err != nil {
+		c.HTML(http.StatusNotFound, "posts/404.html", common.BuildPageData(c, gin.H{
+			"Title":    "未找到",
+			"ExtraCSS": "/static/css/posts.css",
+		}))
+		return
+	}
+
+	uid, role, _ := common.GetGinUser(c)
+
+	// 仅 approved 公开可见（作者本人 + moderator+ 可预览其他状态）
+	if post.Status != model.PostStatusApproved && !ctrl.postService.IsPostAccessible(uid, role, post.UserID) {
+		// 未登录用户：引导登录后回到当前帖子
+		if uid == 0 {
+			common.RedirectToLogin(c)
+			return
+		}
+		c.HTML(http.StatusNotFound, "posts/404.html", common.BuildPageData(c, gin.H{
+			"Title":    "未找到",
+			"ExtraCSS": "/static/css/posts.css",
+		}))
+		return
+	}
+
+	// 已登录用户阅读计数（已发布帖子，自动去重+防刷）
+	if uid > 0 && post.Status == model.PostStatusApproved {
+		ctrl.postService.RecordRead(uid, post.ID)
+	}
+
+	// 访客阅读计数（基于 Cookie 标识去重+防刷）
+	if uid == 0 && post.Status == model.PostStatusApproved {
+		vid := ctrl.getVisitorID(c)
+		ctrl.postService.RecordGuestRead(vid, post.ID)
+	}
+
+	ctrl.applyShortcode(post)
+
+	// Open Graph 社交分享数据
+	ogImage := common.ExtractFirstImage(post.Body)
+	if ogImage != "" && !strings.HasPrefix(ogImage, "http") {
+		prefix := ""
+		if !strings.HasPrefix(ogImage, "/") {
+			prefix = "/"
+		}
+		ogImage = "https://" + c.Request.Host + prefix + ogImage
+	}
+	ogURL := fmt.Sprintf("https://%s/posts/%d", c.Request.Host, id)
+
+	c.HTML(http.StatusOK, "posts/show.html", common.BuildPageData(c, gin.H{
+		"Title":         post.Title,
+		"Post":          post,
+		"UID":           uid,
+		"StatusNames":   common.PostStatusDisplayNames,
+		"ExtraCSS":      "/static/css/posts.css",
+		"OgTitle":       post.Title,
+		"OgDescription": post.Excerpt,
+		"OgImage":       ogImage,
+		"OgURL":         ogURL,
+	}))
+}