diff --git a/pets-be/internal/handler/community.go b/pets-be/internal/handler/community.go
index 54d89c3..7d448cd 100644
--- a/pets-be/internal/handler/community.go
+++ b/pets-be/internal/handler/community.go
@@ -104,7 +104,7 @@ func (h *Handler) ListComments(c *gin.Context) {
 	_ = c.ShouldBindQuery(&req)
 	req.Normalize()
 
-	comments, total, err := h.svc.ListComments(idParam(c, "id"), req.Offset(), req.Limit())
+	comments, total, err := h.svc.ListComments(middleware.UserID(c), idParam(c, "id"), req.Offset(), req.Limit())
 	if err != nil {
 		response.FailErr(c, err)
 		return
@@ -152,3 +152,21 @@ func (h *Handler) UnfollowUser(c *gin.Context) {
 	}
 	response.OK(c, gin.H{"followed": false})
 }
+
+// DeleteOwnPost DELETE /api/posts/:id （仅限本人）
+func (h *Handler) DeleteOwnPost(c *gin.Context) {
+	if err := h.svc.DeleteOwnPost(middleware.UserID(c), idParam(c, "id")); err != nil {
+		respondErr(c, err)
+		return
+	}
+	response.OK(c, gin.H{"deleted": true})
+}
+
+// DeleteOwnComment DELETE /api/comments/:id （仅限本人）
+func (h *Handler) DeleteOwnComment(c *gin.Context) {
+	if err := h.svc.DeleteOwnComment(middleware.UserID(c), idParam(c, "id")); err != nil {
+		respondErr(c, err)
+		return
+	}
+	response.OK(c, gin.H{"deleted": true})
+}
diff --git a/pets-be/internal/handler/helper.go b/pets-be/internal/handler/helper.go
index 4006395..383b5b6 100644
--- a/pets-be/internal/handler/helper.go
+++ b/pets-be/internal/handler/helper.go
@@ -27,5 +27,9 @@ func respondErr(c *gin.Context, err error) {
 		response.Fail(c, errcode.ErrNotFound, "")
 		return
 	}
+	if errors.Is(err, service.ErrForbidden) {
+		response.Fail(c, errcode.ErrForbidden, err.Error())
+		return
+	}
 	response.FailErr(c, err)
 }
diff --git a/pets-be/internal/handler/misc.go b/pets-be/internal/handler/misc.go
index 170241a..0110f5a 100644
--- a/pets-be/internal/handler/misc.go
+++ b/pets-be/internal/handler/misc.go
@@ -2,6 +2,7 @@ package handler
 
 import (
 	"errors"
+	"strconv"
 
 	"github.com/gin-gonic/gin"
 
@@ -173,3 +174,17 @@ func (h *Handler) AdminSetFeedbackHandled(c *gin.Context) {
 	}
 	response.OK(c, gin.H{"ok": true})
 }
+
+// ListAIMessages GET /api/ai/messages?session=&limit=
+func (h *Handler) ListAIMessages(c *gin.Context) {
+	limit := 0
+	if v := c.Query("limit"); v != "" {
+		limit, _ = strconv.Atoi(v)
+	}
+	msgs, err := h.svc.ListAIMessages(middleware.UserID(c), c.Query("session"), limit)
+	if err != nil {
+		response.FailErr(c, err)
+		return
+	}
+	response.OK(c, msgs)
+}
diff --git a/pets-be/internal/model/comment.go b/pets-be/internal/model/comment.go
index 405d093..27905d4 100644
--- a/pets-be/internal/model/comment.go
+++ b/pets-be/internal/model/comment.go
@@ -8,4 +8,6 @@ type Comment struct {
 	AuthorName string `gorm:"size:64" json:"author_name"`
 	Content    string `gorm:"size:512" json:"content"`
 	Status     string `gorm:"size:16;default:published" json:"status"`
+
+	IsSelf bool `gorm:"-" json:"is_self"` // 计算字段：是不是我自己发的
 }
diff --git a/pets-be/internal/router/router.go b/pets-be/internal/router/router.go
index f8a82c2..b1a361d 100644
--- a/pets-be/internal/router/router.go
+++ b/pets-be/internal/router/router.go
@@ -94,6 +94,8 @@ func registerUserAPI(api *gin.RouterGroup, h *handler.Handler, jm *appjwt.Manage
 	g.DELETE("/posts/:id/like", h.UnlikePost)
 	g.GET("/posts/:id/comments", h.ListComments)
 	g.POST("/posts/:id/comments", h.CreateComment)
+	g.DELETE("/posts/:id", h.DeleteOwnPost)
+	g.DELETE("/comments/:id", h.DeleteOwnComment)
 
 	g.GET("/articles", h.ListArticles)
 	g.POST("/feedback", h.CreateFeedback)
@@ -103,6 +105,7 @@ func registerUserAPI(api *gin.RouterGroup, h *handler.Handler, jm *appjwt.Manage
 	g.POST("/pro/activate", h.ActivatePro)
 
 	g.POST("/ai/chat", h.AIChat)
+	g.GET("/ai/messages", h.ListAIMessages)
 	g.POST("/pets/:id/ai/assess-symptom", h.AssessSymptom)
 	g.POST("/upload", h.Upload)
 }
diff --git a/pets-be/internal/service/ai.go b/pets-be/internal/service/ai.go
index 2af1a5e..a89c194 100644
--- a/pets-be/internal/service/ai.go
+++ b/pets-be/internal/service/ai.go
@@ -29,3 +29,23 @@ func (s *Service) AIChat(userID string, petID *string, session, text string) (st
 func (s *Service) Upload(objectName string, reader io.Reader, size int64, contentType string) (string, error) {
 	return s.storage.Upload(objectName, reader, size, contentType)
 }
+
+// ListAIMessages 取当前用户的聊天历史（按会话，默认最近 N 条，返回时间正序）
+func (s *Service) ListAIMessages(userID, session string, limit int) ([]model.AIMessage, error) {
+	if limit <= 0 || limit > 100 {
+		limit = 30
+	}
+	q := s.db.Where("user_id = ?", userID)
+	if session != "" {
+		q = q.Where("session = ?", session)
+	}
+	var msgs []model.AIMessage
+	if err := q.Order("id desc").Limit(limit).Find(&msgs).Error; err != nil {
+		return nil, err
+	}
+	// 反转成时间正序，前端直接按顺序渲染
+	for i, j := 0, len(msgs)-1; i < j; i, j = i+1, j-1 {
+		msgs[i], msgs[j] = msgs[j], msgs[i]
+	}
+	return msgs, nil
+}
diff --git a/pets-be/internal/service/community.go b/pets-be/internal/service/community.go
index a372d1c..077b821 100644
--- a/pets-be/internal/service/community.go
+++ b/pets-be/internal/service/community.go
@@ -192,7 +192,7 @@ func (s *Service) postLikeCount(postID string) (int, error) {
 }
 
 // ListComments 评论分页
-func (s *Service) ListComments(postID string, offset, limit int) ([]model.Comment, int64, error) {
+func (s *Service) ListComments(userID, postID string, offset, limit int) ([]model.Comment, int64, error) {
 	q := s.db.Model(&model.Comment{}).Where("post_id = ? AND status = ?", postID, "published")
 	var total int64
 	if err := q.Count(&total).Error; err != nil {
@@ -202,6 +202,9 @@ func (s *Service) ListComments(postID string, offset, limit int) ([]model.Commen
 	if err := q.Order("id desc").Offset(offset).Limit(limit).Find(&comments).Error; err != nil {
 		return nil, 0, err
 	}
+	for i := range comments {
+		comments[i].IsSelf = comments[i].UserID == userID
+	}
 	return comments, total, nil
 }
 
@@ -227,3 +230,38 @@ func (s *Service) CreateComment(userID, postID string, content string) (*model.C
 	}
 	return &comment, nil
 }
+
+// DeleteOwnPost 用户删除自己的帖子（软删除，保留数据可追溯）
+func (s *Service) DeleteOwnPost(userID, postID string) error {
+	var p model.Post
+	if err := s.db.Where("id = ?", postID).First(&p).Error; err != nil {
+		return ErrNotFound
+	}
+	if p.UserID != userID {
+		return ErrForbidden
+	}
+	return s.db.Model(&model.Post{}).Where("id = ?", postID).
+		Update("status", model.PostDeleted).Error
+}
+
+// DeleteOwnComment 用户删除自己的评论，并同步帖子评论数
+func (s *Service) DeleteOwnComment(userID, commentID string) error {
+	var c model.Comment
+	if err := s.db.Where("id = ?", commentID).First(&c).Error; err != nil {
+		return ErrNotFound
+	}
+	if c.UserID != userID {
+		return ErrForbidden
+	}
+	if c.Status == "deleted" {
+		return nil // 幂等
+	}
+	return s.db.Transaction(func(tx *gorm.DB) error {
+		if err := tx.Model(&model.Comment{}).Where("id = ?", commentID).
+			Update("status", "deleted").Error; err != nil {
+			return err
+		}
+		return tx.Model(&model.Post{}).Where("id = ? AND comment_count > 0", c.PostID).
+			UpdateColumn("comment_count", gorm.Expr("comment_count - 1")).Error
+	})
+}
diff --git a/pets-be/internal/service/service.go b/pets-be/internal/service/service.go
index dc6361b..44aba4d 100644
--- a/pets-be/internal/service/service.go
+++ b/pets-be/internal/service/service.go
@@ -18,6 +18,9 @@ var ErrNotFound = errors.New("not found")
 // 避免「点一下白拿会员」。
 var ErrPayNotReady = errors.New("支付功能即将开放，敬请期待")
 
+// ErrForbidden 越权操作（如删除别人的内容）
+var ErrForbidden = errors.New("无权操作")
+
 // Service 业务逻辑聚合，方法按领域分散在各文件
 type Service struct {
 	db      *gorm.DB
diff --git a/pets-fe/components/bottom-sheet/bottom-sheet.js b/pets-fe/components/bottom-sheet/bottom-sheet.js
index 880a9f9..6484aa3 100644
--- a/pets-fe/components/bottom-sheet/bottom-sheet.js
+++ b/pets-fe/components/bottom-sheet/bottom-sheet.js
@@ -52,7 +52,8 @@ Component({
   properties: {
     show: { type: Boolean, value: false },
     type: { type: String, value: '' },
-    postId: { type: Number, value: 0 },
+    // 雪花 ID 是 18 位字符串，声明成 Number 会超出 JS 安全整数范围而丢精度
+    postId: { type: String, value: '' },
   },
   data: {
     innerType: '',
@@ -182,13 +183,15 @@ Component({
       } else if (type === 'exportData') {
         this.buildExport();
       } else if (type === 'comments' && this.data.postId) {
-        api.listComments(this.data.postId).then((page) => this.setData({ comments: page.list || [] })).catch(() => {});
+        this.loadComments();
       } else if (type === 'reminders' && id) {
         this.loadReminders();
       } else if (type === 'poster' && id) {
         api.getPoster(id).then((p) => this.setData({ poster: p })).catch(() => {});
       } else if (type === 'reportDetail' && id) {
         api.weeklyReport(id).then((r) => this.setData({ reportDetail: r })).catch(() => {});
+      } else if (type === 'ai') {
+        this.loadAIHistory();
       } else if (type === 'pro') {
         api.getPro().then((p) => this.setData({ proInfo: p })).catch(() => {});
       }
@@ -244,6 +247,28 @@ Component({
     onCostNote(e) { this.setData({ costNote: e.detail.value }); },
     onCostInput(e) { this.setData({ costAmount: e.detail.value }); },
     onPostInput(e) { this.setData({ postContent: e.detail.value }); },
+    loadComments() {
+      if (!this.data.postId) return;
+      api.listComments(this.data.postId)
+        .then((page) => this.setData({ comments: page.list || [] }))
+        .catch(() => {});
+    },
+    // 长按删除自己的评论
+    onDeleteComment(e) {
+      const c = this.data.comments[e.currentTarget.dataset.index];
+      if (!c || !c.is_self) return;
+      wx.showModal({
+        title: '删除评论',
+        content: '确定删除这条评论？',
+        confirmColor: '#D9534F',
+        success: (res) => {
+          if (!res.confirm) return;
+          api.deleteComment(c.id)
+            .then(() => { this.loadComments(); this.triggerEvent('commented'); })
+            .catch((err) => wx.showToast({ title: err.message || '删除失败', icon: 'none' }));
+        },
+      });
+    },
     // ---- 多宠物管理 ----
     loadMyPets() {
       const cur = store.currentPetId();
@@ -722,6 +747,17 @@ Component({
 
     // AI 聊天
     onAiInput(e) { this.setData({ aiInput: e.detail.value }); },
+    // 拉取历史对话，接在开场白之后；没有历史就保持开场白
+    loadAIHistory() {
+      api
+        .aiMessages('sheet', 30)
+        .then((list) => {
+          if (!list || !list.length) return;
+          const history = list.map((m) => ({ role: m.role === 'user' ? 'user' : 'ai', text: m.text }));
+          this.setData({ aiMessages: this.data.aiMessages.concat(history) });
+        })
+        .catch(() => {});
+    },
     sendAI(e) {
       const preset = e.currentTarget.dataset.text;
       const text = (preset || this.data.aiInput || '').trim();
diff --git a/pets-fe/components/bottom-sheet/bottom-sheet.wxml b/pets-fe/components/bottom-sheet/bottom-sheet.wxml
index 77f28a0..d57b615 100644
--- a/pets-fe/components/bottom-sheet/bottom-sheet.wxml
+++ b/pets-fe/components/bottom-sheet/bottom-sheet.wxml
@@ -331,8 +331,12 @@ module.exports.sel = function (map, key, index, def) {
     <!-- 评论 -->
     <block wx:elif="{{innerType === 'comments'}}">
       <view class="sheet-h3">评论</view>
-      <view wx:for="{{comments}}" wx:key="id" class="record-row"><text class="bold">{{item.author_name}}</text><text class="muted">{{item.content}}</text></view>
+      <view wx:for="{{comments}}" wx:key="id" class="record-row" bindlongpress="onDeleteComment" data-index="{{index}}">
+        <text class="bold">{{item.author_name}}<text wx:if="{{item.is_self}}" class="mine-tag">我</text></text>
+        <text class="muted">{{item.content}}</text>
+      </view>
       <view wx:if="{{!comments.length}}" class="sheet-p">还没有评论，来抢沙发～</view>
+      <view wx:if="{{comments.length}}" class="sheet-p" style="font-size:22rpx;color:var(--muted)">长按自己的评论可删除</view>
       <view class="ai-input-row" style="margin-top:24rpx">
         <input class="input" placeholder="友善交流，分享经验..." placeholder-class="placeholder" value="{{commentText}}" bindinput="onCommentInput"/>
         <button class="btn btn-primary ai-send" bindtap="onSendComment">发</button>
diff --git a/pets-fe/components/bottom-sheet/bottom-sheet.wxss b/pets-fe/components/bottom-sheet/bottom-sheet.wxss
index 137ff8a..2501820 100644
--- a/pets-fe/components/bottom-sheet/bottom-sheet.wxss
+++ b/pets-fe/components/bottom-sheet/bottom-sheet.wxss
@@ -61,3 +61,4 @@
   border:1rpx solid var(--line);margin-bottom:24rpx;
 }
 .export-box::-webkit-scrollbar{width:0;height:0;display:none}
+.mine-tag{margin-left:10rpx;font-size:20rpx;font-weight:700;color:var(--primary-dark);background:#FFF2DC;padding:2rpx 10rpx;border-radius:999rpx}
diff --git a/pets-fe/pages/community/community.js b/pets-fe/pages/community/community.js
index 1760a78..537345f 100644
--- a/pets-fe/pages/community/community.js
+++ b/pets-fe/pages/community/community.js
@@ -1,5 +1,6 @@
 const store = require('../../utils/store.js');
 const api = require('../../utils/api.js');
+const { toastErr } = require('../../utils/ui.js');
 
 const TAG_CLASS = { 求助: 'warn', 经验: 'blue', 精选: 'purple', 避坑: 'red', 晒宠: '' };
 
@@ -32,7 +33,9 @@ Page({
     posts: [],
     sheetShow: false,
     sheetType: '',
-    sheetPostId: 0,
+    sheetPostId: '',
+    loaded: false,
+    loadErr: '',
   },
   onLoad() {
     this._unsub = store.subscribe((pet) => this.setData({ pet }));
@@ -54,10 +57,15 @@ Page({
   },
   loadPosts() {
     const tab = this.data.feedTabs[this.data.feedIdx];
+    this.setData({ loadErr: '' });
     api
       .listPosts(tab, 1)
-      .then((page) => this.setData({ posts: (page.list || []).map(mapPost) }))
-      .catch(() => {});
+      .then((page) => this.setData({ posts: (page.list || []).map(mapPost), loaded: true }))
+      .catch((e) => {
+        // 不能让「加载失败」显示成「还没有帖子」，那是在骗用户
+        this.setData({ loadErr: e.message || '加载失败', loaded: true });
+        toastErr(e);
+      });
   },
   switchFeedTab(e) {
     this.setData({ feedIdx: e.currentTarget.dataset.index });
@@ -77,7 +85,7 @@ Page({
     this.setData({ sheetPostId: e.currentTarget.dataset.id, sheetType: 'comments', sheetShow: true });
   },
   openSheet(e) {
-    this.setData({ sheetType: e.currentTarget.dataset.type, sheetPostId: 0, sheetShow: true });
+    this.setData({ sheetType: e.currentTarget.dataset.type, sheetPostId: '', sheetShow: true });
   },
   closeSheet() {
     this.setData({ sheetShow: false });
@@ -93,7 +101,23 @@ Page({
     wx.navigateTo({ url: '/pages/learn/learn' });
   },
   onFab() {
-    this.setData({ sheetType: 'ai', sheetPostId: 0, sheetShow: true });
+    this.setData({ sheetType: 'ai', sheetPostId: '', sheetShow: true });
+  },
+  // 长按自己的帖子可删除
+  onLongPressPost(e) {
+    const p = this.data.posts[e.currentTarget.dataset.index];
+    if (!p || !p.is_self) return;
+    wx.showModal({
+      title: '删除帖子',
+      content: '确定删除这条帖子？删除后其他人将看不到。',
+      confirmColor: '#D9534F',
+      success: (res) => {
+        if (!res.confirm) return;
+        api.deletePost(p.id)
+          .then(() => { wx.showToast({ title: '已删除', icon: 'success' }); this.loadPosts(); })
+          .catch((err) => wx.showToast({ title: err.message || '删除失败', icon: 'none' }));
+      },
+    });
   },
   // 关注 / 取关帖子作者
   toggleFollow(e) {
diff --git a/pets-fe/pages/community/community.wxml b/pets-fe/pages/community/community.wxml
index 55d071c..06c4830 100644
--- a/pets-fe/pages/community/community.wxml
+++ b/pets-fe/pages/community/community.wxml
@@ -19,7 +19,7 @@ module.exports.isUrl = function (s) { return s && s.indexOf('http') === 0; }
     <button class="btn btn-primary btn-block" bindtap="openSheet" data-type="createPost">＋ 发布图文</button>
   </view>
 
-  <view wx:for="{{posts}}" wx:key="id" class="post-card">
+  <view wx:for="{{posts}}" wx:key="id" class="post-card" bindlongpress="onLongPressPost" data-index="{{index}}">
     <view class="post-head">
       <view class="post-avatar">{{item.author_emoji}}</view>
       <view class="post-user"><text class="pu-b">{{item.author_name}}<text wx:if="{{item.is_ai}}" class="ai-tag">AI</text></text><text class="pu-s">宠友</text></view>
@@ -41,7 +41,13 @@ module.exports.isUrl = function (s) { return s && s.indexOf('http') === 0; }
     </view>
   </view>
 
-  <view wx:if="{{posts.length === 0}}" class="empty-hint">还没有帖子，来发第一条吧 🐾</view>
+  <view wx:if="{{loadErr}}" class="empty-hint">
+    {{loadErr}}
+    <view class="retry-btn" bindtap="loadPosts">点击重试</view>
+  </view>
+  <view wx:elif="{{loaded && posts.length === 0}}" class="empty-hint">
+    {{feedTabs[feedIdx] === '关注' ? '还没有关注的人，去「推荐」里关注几个宠友吧 🐾' : '还没有帖子，来发第一条吧 🐾'}}
+  </view>
 </view>
 </scroll-view>
 
diff --git a/pets-fe/pages/community/community.wxss b/pets-fe/pages/community/community.wxss
index 1997f84..e25dce0 100644
--- a/pets-fe/pages/community/community.wxss
+++ b/pets-fe/pages/community/community.wxss
@@ -53,3 +53,4 @@ page{height:100vh;overflow:hidden;display:flex;flex-direction:column}
   color:var(--primary-dark);background:#FFF2DC;border:1rpx solid #FFD39A;
 }
 .follow-btn.on{color:var(--muted);background:#F4F1EC;border-color:var(--line)}
+.retry-btn{margin-top:20rpx;display:inline-block;padding:12rpx 36rpx;border-radius:999rpx;background:#FFF2DC;color:var(--primary-dark);font-weight:700;font-size:26rpx}
diff --git a/pets-fe/pages/home/home.js b/pets-fe/pages/home/home.js
index 22710be..819e3f3 100644
--- a/pets-fe/pages/home/home.js
+++ b/pets-fe/pages/home/home.js
@@ -1,5 +1,6 @@
 const store = require('../../utils/store.js');
 const api = require('../../utils/api.js');
+const { toastErr } = require('../../utils/ui.js');
 
 function todayStr() {
   const d = new Date();
@@ -34,6 +35,8 @@ Page({
     this.setData({ todayDate: todayStr() });
     this._unsub = store.subscribe((pet) => {
       this.setData({ pet });
+      // 首次由 onShow 统一加载，这里只处理之后的「切换宠物 / 数据变更」，避免重复请求
+      if (!this._inited) return;
       this.loadAll();
     });
   },
@@ -47,6 +50,7 @@ Page({
     store
       .ready()
       .then(() => {
+        this._inited = true;
         this.setData({ pet: store.getPet() });
         this.loadAll();
       })
@@ -72,7 +76,7 @@ Page({
     api
       .homeSummary(id)
       .then((summary) => this.setData({ summary }))
-      .catch(() => {});
+      .catch((e) => toastErr(e));
   },
   loadTasks() {
     const id = store.currentPetId();
@@ -81,7 +85,7 @@ Page({
     api
       .getTasks(id, date)
       .then((tasks) => this.setData({ tasks: (tasks || []).map(mapTask) }))
-      .catch(() => {});
+      .catch((e) => toastErr(e));
   },
   onTapDay(e) {
     const { date, active } = e.currentTarget.dataset;
@@ -130,8 +134,9 @@ Page({
     this.setData({ sheetType: type, sheetShow: true });
   },
   closeSheet() {
+    // 只关闭。数据变更由 bind:saved 或 store 的宠物变更通知触发刷新，
+    // 不必每次关弹层（哪怕只是看了眼 AI）都全量重拉一遍
     this.setData({ sheetShow: false });
-    this.loadAll();
   },
   onSheetSave() {
     this.loadTasks();
diff --git a/pets-fe/pages/home/home.wxml b/pets-fe/pages/home/home.wxml
index 503e14f..558e5ac 100644
--- a/pets-fe/pages/home/home.wxml
+++ b/pets-fe/pages/home/home.wxml
@@ -97,4 +97,4 @@
 </scroll-view>
 
 <fab bind:tap="onFab"></fab>
-<bottom-sheet show="{{sheetShow}}" type="{{sheetType}}" bind:close="closeSheet" bind:save="onSheetSave"></bottom-sheet>
+<bottom-sheet show="{{sheetShow}}" type="{{sheetType}}" bind:close="closeSheet" bind:saved="onSheetSave"></bottom-sheet>
diff --git a/pets-fe/pages/plan/plan.js b/pets-fe/pages/plan/plan.js
index 7e6378a..f92a611 100644
--- a/pets-fe/pages/plan/plan.js
+++ b/pets-fe/pages/plan/plan.js
@@ -46,6 +46,7 @@ Page({
   onLoad() {
     this._unsub = store.subscribe((pet) => {
       this.setData({ pet, calLoaded: false });
+      if (!this._inited) return; // 首次由 onShow 加载
       this.loadTimeline();
       if (this.data.planView === 'calendar') this.loadCalendar();
     });
@@ -60,6 +61,7 @@ Page({
     store
       .ready()
       .then(() => {
+        this._inited = true;
         this.setData({ pet: store.getPet() });
         this.loadTimeline();
       })
diff --git a/pets-fe/pages/record/record.js b/pets-fe/pages/record/record.js
index 9037356..45bae8b 100644
--- a/pets-fe/pages/record/record.js
+++ b/pets-fe/pages/record/record.js
@@ -1,5 +1,6 @@
 const store = require('../../utils/store.js');
 const api = require('../../utils/api.js');
+const { toastErr } = require('../../utils/ui.js');
 
 function pad(n) {
   return n < 10 ? '0' + n : '' + n;
@@ -16,6 +17,7 @@ function fmtTime(iso) {
 }
 function mapRecord(r) {
   return {
+    id: r.id,
     icon: r.icon || '✍️',
     title: r.title,
     desc: fmtTime(r.occurred_at) + (r.description ? '｜' + r.description : ''),
@@ -23,6 +25,19 @@ function mapRecord(r) {
   };
 }
 
+// 时间轴类型筛选
+const REC_FILTERS = [
+  { key: '', label: '全部' },
+  { key: 'weight', label: '体重' },
+  { key: 'poop', label: '便便' },
+  { key: 'food', label: '饮食' },
+  { key: 'symptom', label: '异常' },
+  { key: 'medicine', label: '用药' },
+  { key: 'vaccine', label: '疫苗' },
+  { key: 'cost', label: '消费' },
+  { key: 'photo', label: '照片' },
+];
+
 function fmtDay(iso) {
   if (!iso) return '';
   const d = new Date(iso);
@@ -63,6 +78,8 @@ Page({
     recPage: 1,
     recTotal: 0,
     recHasMore: false,
+    recFilters: REC_FILTERS,
+    recFilterIdx: 0,
     trendSvg: '',
     trendStats: null,
     trendDots: [],
@@ -74,6 +91,7 @@ Page({
   onLoad() {
     this._unsub = store.subscribe((pet) => {
       this.setData({ pet });
+      if (!this._inited) return; // 首次由 onShow 加载
       this.loadRecords();
     });
   },
@@ -87,21 +105,50 @@ Page({
     store
       .ready()
       .then(() => {
+        this._inited = true;
         this.setData({ pet: store.getPet() });
         this.loadRecords();
       })
       .catch((e) => wx.showToast({ title: e.message || '加载失败', icon: 'none' }));
   },
+  curFilter() {
+    return this.data.recFilters[this.data.recFilterIdx].key;
+  },
+  onFilterTap(e) {
+    const i = Number(e.currentTarget.dataset.index);
+    if (i === this.data.recFilterIdx) return;
+    this.setData({ recFilterIdx: i }, () => this.loadRecords());
+  },
+  // 长按删除一条记录
+  onDeleteRecord(e) {
+    const r = this.data.timeline[e.currentTarget.dataset.index];
+    if (!r || !r.id) return;
+    wx.showModal({
+      title: '删除记录',
+      content: '确定删除「' + r.title + '」？删除后不可恢复。',
+      confirmColor: '#D9534F',
+      success: (res) => {
+        if (!res.confirm) return;
+        api
+          .deleteRecord(r.id)
+          .then(() => {
+            wx.showToast({ title: '已删除', icon: 'success' });
+            this.loadRecords();
+          })
+          .catch((err) => wx.showToast({ title: err.message || '删除失败', icon: 'none' }));
+      },
+    });
+  },
   loadRecords() {
     const id = store.currentPetId();
     if (!id) return;
     api
-      .getRecords(id, { page: 1, pageSize: REC_PAGE })
+      .getRecords(id, { page: 1, pageSize: REC_PAGE, type: this.curFilter() })
       .then((res) => {
         const list = (res.list || []).map(mapRecord);
         this.setData({ timeline: list, recPage: 1, recTotal: res.total || 0, recHasMore: list.length < (res.total || 0) });
       })
-      .catch(() => {});
+      .catch((e) => toastErr(e));
     this.loadTrend();
   },
   loadMoreRecords() {
@@ -109,7 +156,7 @@ Page({
     if (!id) return;
     const next = this.data.recPage + 1;
     api
-      .getRecords(id, { page: next, pageSize: REC_PAGE })
+      .getRecords(id, { page: next, pageSize: REC_PAGE, type: this.curFilter() })
       .then((res) => {
         const merged = this.data.timeline.concat((res.list || []).map(mapRecord));
         this.setData({ timeline: merged, recPage: next, recTotal: res.total || 0, recHasMore: merged.length < (res.total || 0) });
diff --git a/pets-fe/pages/record/record.wxml b/pets-fe/pages/record/record.wxml
index 8818da7..554392c 100644
--- a/pets-fe/pages/record/record.wxml
+++ b/pets-fe/pages/record/record.wxml
@@ -50,16 +50,24 @@
 
   <view class="card">
     <view class="section-head"><view class="sh-title">健康时间轴</view><view class="link" data-type="vetSummary" bindtap="openSheet">摘要</view></view>
+    <scroll-view class="rec-filter" scroll-x="true" enhanced="{{true}}" show-scrollbar="{{false}}">
+      <view wx:for="{{recFilters}}" wx:key="key"
+            class="rf-chip {{recFilterIdx === index ? 'on' : ''}}"
+            data-index="{{index}}" bindtap="onFilterTap">{{item.label}}</view>
+    </scroll-view>
+
     <view class="health-timeline">
-      <view wx:for="{{timeline}}" wx:key="index" class="health-event">
+      <view wx:for="{{timeline}}" wx:key="id" class="health-event"
+            bindlongpress="onDeleteRecord" data-index="{{index}}">
         <view class="event-dot">{{item.icon}}</view>
         <view class="he-body">
           <text class="he-b">{{item.title}}</text><view class="he-p">{{item.desc}}</view>
-          <image wx:if="{{item.image}}" class="he-img" src="{{item.image}}" mode="aspectFill" bindtap="previewImage" data-src="{{item.image}}"></image>
+          <image wx:if="{{item.image}}" class="he-img" src="{{item.image}}" mode="aspectFill" catchtap="previewImage" data-src="{{item.image}}"></image>
         </view>
       </view>
-      <view wx:if="{{timeline.length === 0}}" class="tl-empty">还没有记录，用上面的按钮记一条吧</view>
+      <view wx:if="{{timeline.length === 0}}" class="tl-empty">这个分类下还没有记录</view>
     </view>
+    <view wx:if="{{timeline.length}}" class="tl-tip">长按任意一条可删除</view>
     <view wx:if="{{recHasMore}}" class="tl-more" bindtap="loadMoreRecords">查看更多（共 {{recTotal}} 条）</view>
     <view wx:elif="{{recPage > 1}}" class="tl-more" bindtap="collapseRecords">收起</view>
   </view>
diff --git a/pets-fe/pages/record/record.wxss b/pets-fe/pages/record/record.wxss
index fa393bc..331e61d 100644
--- a/pets-fe/pages/record/record.wxss
+++ b/pets-fe/pages/record/record.wxss
@@ -50,3 +50,12 @@
 /* 页面不自身滚动，改由 page-scroll 承载滚动（隐藏滚动条）*/
 page{height:100vh;overflow:hidden;display:flex;flex-direction:column}
 .page-scroll{flex:1;min-height:0}
+
+/* 时间轴类型筛选 */
+.rec-filter{white-space:nowrap;margin-bottom:20rpx}
+.rf-chip{
+  display:inline-block;padding:10rpx 26rpx;margin-right:14rpx;border-radius:999rpx;
+  background:#fff;border:1rpx solid var(--line);color:var(--muted);font-size:24rpx;font-weight:700;
+}
+.rf-chip.on{background:#FFF2DC;color:var(--primary-dark);border-color:#FFD39A}
+.tl-tip{margin-top:16rpx;text-align:center;color:var(--muted);font-size:22rpx}
diff --git a/pets-fe/pages/report/report.js b/pets-fe/pages/report/report.js
index 5e3d16f..c064f85 100644
--- a/pets-fe/pages/report/report.js
+++ b/pets-fe/pages/report/report.js
@@ -14,6 +14,7 @@ Page({
   onLoad() {
     this._unsub = store.subscribe((pet) => {
       this.setData({ pet });
+      if (!this._inited) return; // 首次由 onShow 加载
       this.loadData();
     });
   },
@@ -27,6 +28,7 @@ Page({
     store
       .ready()
       .then(() => {
+        this._inited = true;
         this.setData({ pet: store.getPet() });
         this.loadData();
       })
diff --git a/pets-fe/utils/api.js b/pets-fe/utils/api.js
index 1c90b40..f7b1ee5 100644
--- a/pets-fe/utils/api.js
+++ b/pets-fe/utils/api.js
@@ -54,6 +54,7 @@ const api = {
     return request({ url: `/api/pets/${id}/records${qs.length ? '?' + qs.join('&') : ''}` });
   },
   createRecord: (id, body) => request({ url: `/api/pets/${id}/records`, method: 'POST', data: body }),
+  deleteRecord: (recordId) => request({ url: `/api/records/${recordId}`, method: 'DELETE' }),
   weightTrend: (id) => request({ url: `/api/pets/${id}/records/weight-trend` }),
 
   // 任务
@@ -92,6 +93,8 @@ const api = {
   likePost: (id) => request({ url: `/api/posts/${id}/like`, method: 'POST' }),
   followUser: (userId) => request({ url: `/api/users/${userId}/follow`, method: 'POST' }),
   unfollowUser: (userId) => request({ url: `/api/users/${userId}/follow`, method: 'DELETE' }),
+  deletePost: (id) => request({ url: `/api/posts/${id}`, method: 'DELETE' }),
+  deleteComment: (id) => request({ url: `/api/comments/${id}`, method: 'DELETE' }),
   listComments: (id) => request({ url: `/api/posts/${id}/comments` }),
   createComment: (id, content) =>
     request({ url: `/api/posts/${id}/comments`, method: 'POST', data: { content } }),
@@ -106,6 +109,8 @@ const api = {
   activatePro: () => request({ url: '/api/pro/activate', method: 'POST' }),
 
   // AI
+  aiMessages: (session, limit) =>
+    request({ url: `/api/ai/messages?session=${session || ''}&limit=${limit || 30}` }),
   aiChat: (body) => request({ url: '/api/ai/chat', method: 'POST', data: body }),
   assessSymptom: (id, body) =>
     request({ url: `/api/pets/${id}/ai/assess-symptom`, method: 'POST', data: body }),
diff --git a/pets-fe/utils/config.js b/pets-fe/utils/config.js
index b1825eb..afef976 100644
--- a/pets-fe/utils/config.js
+++ b/pets-fe/utils/config.js
@@ -1,5 +1,7 @@
 // 后端地址。本地联调：微信开发者工具需在「详情 → 本地设置」勾选「不校验合法域名」。
 // 上线时改为你的 https 域名，并在微信公众平台配置 request 合法域名。
-const BASE_URL = 'http://192.168.31.4:9090';
+//const BASE_URL = 'http://192.168.31.4:9090';
+const BASE_URL = 'https://pet.sundynix.cn';
+
 
 module.exports = { BASE_URL };
diff --git a/pets-fe/utils/request.js b/pets-fe/utils/request.js
index 0c15602..609367e 100644
--- a/pets-fe/utils/request.js
+++ b/pets-fe/utils/request.js
@@ -12,14 +12,25 @@ function clearToken() {
   wx.removeStorageSync(TOKEN_KEY);
 }
 
-// 统一请求：注入 token，解析 {code,message,data}，成功返回 data，失败 reject(Error)
-function request({ url, method = 'GET', data, header = {} }) {
+// token 失效时的重新登录钩子，由 store 注册（放在这里避免 request ← api ← store 循环依赖）
+let reAuth = null;
+function setReAuthHandler(fn) {
+  reAuth = fn;
+}
+
+const TIMEOUT = 15000;
+
+// 统一请求：注入 token，解析 {code,message,data}，成功返回 data，失败 reject(Error)。
+// token 失效（40100）时自动重新登录并重试一次，避免 JWT 过期后小程序静默白屏。
+function request(options, _retried) {
+  const { url, method = 'GET', data, header = {} } = options;
   return new Promise((resolve, reject) => {
     const token = getToken();
     wx.request({
       url: BASE_URL + url,
       method,
       data,
+      timeout: TIMEOUT,
       header: Object.assign(
         { 'Content-Type': 'application/json' },
         token ? { Authorization: 'Bearer ' + token } : {},
@@ -29,13 +40,22 @@ function request({ url, method = 'GET', data, header = {} }) {
         const body = res.data;
         if (body && typeof body === 'object' && 'code' in body) {
           if (body.code === 0) return resolve(body.data);
-          if (body.code === 40100) clearToken();
+          if (body.code === 40100) {
+            clearToken();
+            // 只重试一次，防止登录接口本身出问题时无限循环
+            if (!_retried && reAuth) {
+              return reAuth()
+                .then(() => request(options, true).then(resolve, reject))
+                .catch(() => reject(new Error(body.message || '登录已过期，请重进小程序')));
+            }
+          }
           return reject(new Error(body.message || '请求失败'));
         }
         resolve(body);
       },
       fail(err) {
-        reject(new Error((err && err.errMsg) || '网络错误'));
+        const msg = (err && err.errMsg) || '网络错误';
+        reject(new Error(/timeout/i.test(msg) ? '网络超时，请稍后重试' : msg));
       },
     });
   });
@@ -49,6 +69,7 @@ function uploadFile(filePath) {
       url: BASE_URL + '/api/upload',
       filePath,
       name: 'file',
+      timeout: 60000,
       header: token ? { Authorization: 'Bearer ' + token } : {},
       success(res) {
         try {
@@ -66,4 +87,4 @@ function uploadFile(filePath) {
   });
 }
 
-module.exports = { request, uploadFile, getToken, setToken, clearToken };
+module.exports = { request, uploadFile, getToken, setToken, clearToken, setReAuthHandler };
diff --git a/pets-fe/utils/store.js b/pets-fe/utils/store.js
index a37413a..90037c1 100644
--- a/pets-fe/utils/store.js
+++ b/pets-fe/utils/store.js
@@ -1,5 +1,6 @@
 // 全局状态：登录、宠物列表、当前宠物；服务端驱动 + 发布订阅
 const api = require('./api.js');
+const { setReAuthHandler } = require('./request.js');
 
 const state = {
   user: null,
@@ -38,6 +39,12 @@ function subscribe(fn) {
 }
 
 // 登录 + 拉宠物列表（只跑一次）
+// token 失效时清掉引导缓存并重新登录一次，让 request 层能自动重试
+setReAuthHandler(async () => {
+  bootstrapPromise = null;
+  await ready();
+});
+
 function ready() {
   if (!bootstrapPromise) {
     bootstrapPromise = (async () => {
diff --git a/pets-fe/utils/ui.js b/pets-fe/utils/ui.js
new file mode 100644
index 0000000..3793767
--- /dev/null
+++ b/pets-fe/utils/ui.js
@@ -0,0 +1,15 @@
+// 轻量 UI 提示：统一错误反馈，避免请求失败时页面一片空白、用户不知道发生了什么。
+let lastMsg = '';
+let lastAt = 0;
+
+// 提示错误。相同文案 3 秒内不重复弹，避免多个并发请求同时失败时刷屏。
+function toastErr(e, fallback) {
+  const msg = (e && e.message) || fallback || '加载失败';
+  const now = Date.now();
+  if (msg === lastMsg && now - lastAt < 3000) return;
+  lastMsg = msg;
+  lastAt = now;
+  wx.showToast({ title: msg, icon: 'none', duration: 2000 });
+}
+
+module.exports = { toastErr };