feat: use iconpark in base tabs

refactor: support iconpark in menu and header

.github/ISSUE_TEMPLATE/新功能建议.md

@@ -0,0 +1,20 @@
+---
+name: 新功能建议
+about: 请为该项目提出一个想法
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**你的功能请求是否与某个问题相关？请描述。**
+请清晰、简洁地说明问题。例如：“我经常因为……而感到困扰。”
+
+**你期望的解决方案**
+请清晰、简洁地描述你希望发生的事情/功能如何工作。
+
+**你考虑过的替代方案**
+请清晰、简洁地说明你已考虑过的其他解决方案或功能。
+
+**其他上下文**
+在此添加与功能请求相关的其他信息或截图。

.github/ISSUE_TEMPLATE/错误-bug报告.md

@@ -0,0 +1,41 @@
+---
+name: 错误/Bug报告
+about: 创建报告以帮助我们改进
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**描述 Bug**
+对该 Bug 进行清晰简明的描述。
+
+**复现步骤**
+复现该问题的步骤：
+
+1. 进入 '...'
+2. 点击 '...'
+3. 下拉到 '...'
+4. 看到错误
+
+**预期行为**
+清晰简明地描述你期望发生的情况。
+
+**截图**
+如果适用，请添加截图以帮助解释问题。
+
+**桌面端（请完成以下信息）：**
+
+* 操作系统：\[例如 iOS]
+* 浏览器：\[例如 Chrome、Safari]
+* 版本：\[例如 22]
+
+**移动端（请完成以下信息）：**
+
+* 设备：\[例如 iPhone6]
+* 操作系统：\[例如 iOS8.1]
+* 浏览器：\[例如 系统自带浏览器、Safari]
+* 版本：\[例如 22]
+
+**附加上下文**
+在此添加与问题相关的其他上下文信息。

.github/workflows/deploy-staging.yml

@@ -0,0 +1,23 @@
+name: Staging CI & CD
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    environment: Deploy
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Deploy to Server
+        uses: appleboy/ssh-action@v1.0.3
+        with:
+          host: ${{ secrets.SSH_HOST }}
+          username: root
+          key: ${{ secrets.SSH_KEY }}
+          script: bash /opt/openisle/deploy-staging.sh
+

.github/workflows/deploy.yml

@@ -1,9 +1,9 @@
 name: CI & CD
 
 on:
-  push:
-    branches: [main]
   workflow_dispatch:
+  schedule:
+    - cron: "0 19 * * *"   # 每天 UTC 19:00，相当于北京时间凌晨3点
 
 jobs:
   build-and-deploy:
@@ -13,22 +13,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      # - uses: actions/setup-java@v4
-      #   with:
-      #     java-version: '17'
-      #     distribution: 'temurin'
-
-      # - run: mvn -B clean package -DskipTests
-
-      # - uses: actions/setup-node@v4
-      #   with:
-      #     node-version: '20'
-
-      # - run: |
-      #     cd open-isle-cli
-      #     npm ci
-      #     npm run build
-
       - name: Deploy to Server
         uses: appleboy/ssh-action@v1.0.3
         with:

.gitignore

@@ -1,7 +1,30 @@
+# IDE
 .idea
 target
-openisle.iml
+
+# log
+logs
+
+# deps
 node_modules
+
+# test & build
+coverage
+out/
+build
 dist
-open-isle.env
-logs
+*.tsbuildinfo
+
+# misc
+.DS_Store
+*.pem
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# env
+*.env
+.env*.local
+
+# others
+openisle.iml

.husky/pre-commit

@@ -1,4 +1 @@
-#!/usr/bin/env sh
-. "$(dirname -- "$0")/_/husky.sh"
-
 npx lint-staged

CODE_OF_CONDUCT.md

@@ -0,0 +1,32 @@
+# OpenIsle Code of Conduct
+
+Like the technical community as a whole, the OpenIsle team and community is made up of a mixture of professionals and volunteers from all over the world, working on every aspect of the mission - including mentorship, teaching, and connecting people.
+
+Diversity is one of our huge strengths, but it can also lead to communication issues and unhappiness. To that end, we have a few ground rules that we ask people to adhere to. This code applies equally to founders, mentors and those seeking help and guidance.
+
+This isn’t an exhaustive list of things that you can’t do. Rather, take it in the spirit in which it’s intended - a guide to make it easier to enrich all of us and the technical communities in which we participate.
+
+This code of conduct applies to all spaces managed by the OpenIsle project or . This includes IRC, the mailing lists, the issue tracker, DSF events, and any other forums created by the project team which the community uses for communication. In addition, violations of this code outside these spaces may affect a person's ability to participate within them.
+
+If you believe someone is violating the code of conduct, we ask that you report it by emailing [](mailto:). For more details please see our 
+
+- **Be friendly and patient.**
+- **Be welcoming.** We strive to be a community that welcomes and supports people of all backgrounds and identities. This includes, but is not limited to members of any race, ethnicity, culture, national origin, colour, immigration status, social and economic class, educational level, sex, sexual orientation, gender identity and expression, age, size, family status, political belief, religion, and mental and physical ability.
+- **Be considerate.** Your work will be used by other people, and you in turn will depend on the work of others. Any decision you take will affect users and colleagues, and you should take those consequences into account when making decisions. Remember that we're a world-wide community, so you might not be communicating in someone else's primary language.
+- **Be respectful.** Not all of us will agree all the time, but disagreement is no excuse for poor behavior and poor manners. We might all experience some frustration now and then, but we cannot allow that frustration to turn into a personal attack. It’s important to remember that a community where people feel uncomfortable or threatened is not a productive one. Members of the OpenIsle community should be respectful when dealing with other members as well as with people outside the OpenIsle community.
+- **Be careful in the words that you choose.** We are a community of professionals, and we conduct ourselves professionally. Be kind to others. Do not insult or put down other participants. Harassment and other exclusionary behavior aren't acceptable. This includes, but is not limited to: 
+ - Violent threats or language directed against another person.
+ - Discriminatory jokes and language.
+ - Posting sexually explicit or violent material.
+ - Posting (or threatening to post) other people's personally identifying information ("doxing").
+ - Personal insults, especially those using racist or sexist terms.
+ - Unwelcome sexual attention.
+ - Advocating for, or encouraging, any of the above behavior.
+ - Repeated harassment of others. In general, if someone asks you to stop, then stop.
+- **When we disagree, try to understand why.** Disagreements, both social and technical, happen all the time and OpenIsle is no exception. It is important that we resolve disagreements and differing views constructively. Remember that we’re different. The strength of OpenIsle comes from its varied community, people from a wide range of backgrounds. Different people have different perspectives on issues. Being unable to understand why someone holds a viewpoint doesn’t mean that they’re wrong. Don’t forget that it is human to err and blaming each other doesn’t get us anywhere. Instead, focus on helping to resolve issues and learning from mistakes.
+
+Original text courtesy of the [Speak Up! project](http://web.archive.org/web/20141109123859/http://speakup.io/coc.html).
+
+## Questions?
+
+If you have questions, please see . If that doesn't answer your questions, feel free to [contact us](mailto:).

CONTRIBUTING.md

@@ -0,0 +1,210 @@
+- [前置工作](#前置工作)
+- [启动后端服务](#启动后端服务)
+    - [本地 IDEA](#本地-idea)
+        - [配置环境变量](#配置环境变量)
+        - [配置 IDEA 参数](#配置-idea-参数)
+        - [配置 MySQL](#配置-mysql)
+    - [Docker 环境](#docker-环境)
+        - [配置环境变量](#配置环境变量-1)
+        - [构建并启动镜像](#构建并启动镜像)
+- [启动前端服务](#启动前端服务)
+    - [配置环境变量](#配置环境变量-2)
+    - [安装依赖和运行](#安装依赖和运行)
+- [其他配置](#其他配置)
+
+## 前置工作
+
+先克隆仓库：
+
+```shell
+git clone https://github.com/nagisa77/OpenIsle.git
+cd OpenIsle
+```
+
+- 后端开发环境
+    - JDK 17+
+- 前端开发环境
+    - Node.JS 20+
+
+## 启动后端服务
+
+启动后端服务有多种方式，选择一种即可。
+
+> [!IMPORTANT]
+> 仅想修改前端的朋友可不用部署后端服务。转到 [启动前端服务](#启动前端服务) 章节。
+
+### 本地 IDEA
+
+```shell
+cd backend/
+```
+
+IDEA 打开 `backend/` 文件夹。
+
+#### 配置环境变量
+
+1. 生成环境变量文件
+
+    ```shell
+    cp open-isle.env.example open-isle.env
+    ```
+
+    `open-isle.env.example` 是环境变量模板，`open-isle.env` 才是真正读取的内容
+
+2. 修改环境变量，留下需要的，比如你要开发 Google 登录业务，就需要谷歌相关的变量，数据库是一定要的
+
+    ![环境变量](assets/contributing/backend_img_7.png)
+
+3. 应用环境文件，选择刚刚的 `open-isle.env`
+
+可以在 `open-isle.env` 按需填写个性化的配置，该文件不会被 Git 追踪。比如你想把服务跑在 `8082`（默认为 `8080`），那么直接改 `open-isle.env` 即可：
+
+```ini
+SERVER_PORT=8082
+```
+
+另一种方式是修改 `.properities` 文件（但不建议），位于 `src/main/application.properties`，该配置同样来源于 `open-isle.env`，但修改 `.properties` 文件会被 Git 追踪。
+
+![配置数据库](assets/contributing/backend_img_5.png)
+
+#### 配置 IDEA 参数
+
+- 设置 JDK 版本为 java 17
+- 设置 VM Option，最好运行在其他端口，非 `8080`，这里设置 `8081`
+
+    ```shell
+    -Dserver.port=8081
+    ```
+
+![配置1](assets/contributing/backend_img_3.png)
+
+![配置2](assets/contributing/backend_img_2.png)
+
+#### 配置 MySQL
+
+> [!TIP]
+> 如果不知道怎么配置数据库可以参考 [Docker 环境](#docker-环境) 章节
+
+1. 本机配置 MySQL 服务（网上很多教程，忽略）
+
+    + 可以用 Laragon，自带 MySQL 包括 Nodejs，版本建议 `6.x`，`7` 以后需要 Lisence
+    + [下载地址](https://github.com/leokhoa/laragon/releases)
+
+2. 填写环境变量
+
+    ![环境变量](assets/contributing/backend_img_6.png)
+
+    ```ini
+    MYSQL_URL=jdbc:mysql://<数据库地址>:<端口>/<数据库名>?useUnicode=yes&characterEncoding=UTF-8&useInformationSchema=true&useSSL=false&serverTimezone=UTC
+    MYSQL_USER=<数据库用户名>
+    MYSQL_PASSWORD=<数据库密码>
+    ```
+
+3. 执行 [`db/init/init_script.sql`](backend/src/main/resources/db/init/init_script.sql) 脚本，导入基本的数据
+
+    ![初始化脚本](assets/contributing/resources_img.png)
+
+4. 处理完环境问题直接跑起来就能通了
+
+    ![运行画面](assets/contributing/backend_img_4.png)
+
+### Docker 环境
+#### 配置环境变量
+
+```shell
+cd docker/
+```
+
+主要配置两个 `.env` 文件
+
+- `backend/open-isle.env`：后端环境变量，配置同上，见 [配置环境变量](#配置环境变量)。
+- `docker/.env`：Docker Compose 环境变量，主要配置 MySQL 相关
+    ```shell
+    cp .env.example .env
+    ```
+
+> [!TIP]
+> 使用单独的 `.env` 文件是为了兼容线上环境或已启用 MySQL 服务的情况，如果只是想快速体验或者启动统一的环境，则推荐使用本方式。
+
+在指定 `docker/.env` 后，`backend/open-isle.env` 中以下配置会被覆盖，这样就确保使用了同一份配置。
+
+```ini
+MYSQL_URL=
+MYSQL_USER=
+MYSQL_PASSWORD=
+```
+
+#### 构建并启动镜像
+
+```shell
+docker compose up -d
+```
+
+如果想了解启动过程发生了什么可以查看日志
+
+```shell
+docker compose logs
+```
+
+## 启动前端服务
+
+> [!IMPORTANT]
+> **⚠️ 环境要求：Node.js 版本最低 20.0.0（因为 Nuxt 框架要求）**
+
+```shell
+cd frontend_nuxt/
+```
+
+### 配置环境变量
+
+前端可以依赖本机部署的后端，也可以直接调用线上的后端接口。
+
+- 利用预发环境：**（⚠️ 强烈推荐只开发前端的朋友使用该环境）**
+
+    ```shell
+    cp .env.staging.example .env
+    ```
+
+- 利用生产环境
+
+    ```shell
+    cp .env.production.example .env
+    ```
+
+- 利用本地环境
+
+    ```shell
+    cp .env.dev.example .env
+    ```
+
+### 安装依赖和运行
+
+前端安装依赖并启动服务。
+
+```shell
+# 安装依赖
+npm install --verbose
+
+# 运行前端服务
+npm run dev
+```
+
+如此一来，浏览器访问 http://127.0.0.1:3000 即可访问前端页面。
+
+## 其他配置
+
+配置第三方登录，这里以 GitHub 为例：
+
+- 修改 `application.properties` 配置
+
+    ![后端配置](assets/contributing/backend_img.png)
+
+- 修改 `.env` 配置
+
+    ![前端](assets/contributing/fontend_img.png)
+
+- 配置第三方登录回调地址
+
+    ![github配置](assets/contributing/github_img.png)
+
+    ![github配置2](assets/contributing/github_img_2.png)

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 Tim
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -1,28 +1,18 @@
 <p align="center">
   <img alt="OpenIsle" src="https://openisle-1307107697.cos.ap-guangzhou.myqcloud.com/assert/image.png" width="200">
-  <br><br>
-  高效的开源社区前后端端平台
-  <br><br>
-  <a href="LICENSE"><img src="https://img.shields.io/badge/license-MIT-blue.svg?style=flat-square"></a>
+  <br>
+  高效的开源社区前后端平台
+  <br><br><br>
+  <img alt="Image" src="https://openisle-1307107697.cos.accelerate.myqcloud.com/dynamic_assert/22752cfac5a04a9c90c41995b9f55fed.png" width="1200">
 </p>
 
 ## 💡 简介
 
 OpenIsle 是一个使用 Spring Boot 和 Vue 3 构建的全栈开源社区平台，提供用户注册、登录、贴文发布、评论交互等完整功能，可用于项目社区或直接打造自主社区站点。
 
-## 🚀 部署
+## 🚧 开发 & 部署
 
-### 后端
-
-1. 确保安装 JDK 17 及 Maven
-2. 信息配置修改 `src/main/resources/application.properties`，或通过环境变量设置数据库等参数
-3. 执行 `mvn clean package` 生成包，之后使用 `java -jar target/openisle-0.0.1-SNAPSHOT.jar`启动，或在开发时直接使用 `mvn spring-boot:run`
-
-### 前端
-
-1. `cd open-isle-cli`
-2. 执行 `npm install`
-3. `npm run serve`可在本地启动开发服务，产品环境使用 `npm run build`生成 `dist/` 文件，配合线上网站方式部署
+详细见 [Contributing](https://github.com/nagisa77/OpenIsle?tab=contributing-ov-file)
 
 ## ✨ 项目特点
 

backend/open-isle.env.example

@@ -1,8 +1,17 @@
+# === Spring Boot ===
+SERVER_PORT=8080
+
 # === Database ===
-MYSQL_URL=jdbc:mysql://<数据库地址>:<端口>/<数据库名>?useUnicode=yes&characterEncoding=UTF-8&useInformationSchema=true&useSSL=false&serverTimezone=UTC
+MYSQL_URL=jdbc:mysql://<数据库地址>:<数据库端口>/<数据库名>?useUnicode=yes&characterEncoding=UTF-8&useInformationSchema=true&useSSL=false&serverTimezone=UTC
 MYSQL_USER=<数据库用户名>
 MYSQL_PASSWORD=<数据库密码>
 
+# === JWT ===
+JWT_SECRET=<jwt secret>
+JWT_REASON_SECRET=<jwt reason secret>
+JWT_RESET_SECRET=<jwt reset secret>
+JWT_INVITE_SECRET=<jwt invite secret>
+JWT_EXPIRATION=2592000000
 
 # === Resend ===
 RESEND_API_KEY=<你的resend-api-key>
@@ -22,6 +31,7 @@ TWITTER_CLIENT_ID=<你的twitter-client-id>
 TWITTER_CLIENT_SECRET=<你的-twitter-client-secret>
 DISCORD_CLIENT_ID=<你的discord-client-id>
 DISCORD_CLIENT_SECRET=<你的discord-client-secret>
+TELEGRAM_BOT_TOKEN=<你的telegram-bot-token>
 
 # === OPENAI ===
 OPENAI_API_KEY=<你的openai-api-key>
@@ -30,4 +40,10 @@ OPENAI_API_KEY=<你的openai-api-key>
 WEBPUSH_PUBLIC_KEY=<你的webpush-public-key>
 WEBPUSH_PRIVATE_KEY=<你的webpush-private-key>
 
-# LOG_LEVEL=DEBUG
+# === RabbitMQ ===
+RABBITMQ_HOST=<你的rabbitmq_host>
+RABBITMQ_PORT=<你的rabbitmq_port>
+RABBITMQ_USERNAME=<你的rabbitmq_username>
+RABBITMQ_PASSWORD=<你的rabbitmq_password>
+
+# LOG_LEVEL=DEBUG

backend/pom.xml

@@ -26,6 +26,23 @@
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-web</artifactId>
     </dependency>
+    <dependency>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-amqp</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-data-redis</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>com.fasterxml.jackson.datatype</groupId>
+      <artifactId>jackson-datatype-jsr310</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>com.fasterxml.jackson.datatype</groupId>
+      <artifactId>jackson-datatype-hibernate6</artifactId>
+      <version>2.20.0</version>
+    </dependency>
     <dependency>
       <groupId>org.slf4j</groupId>
       <artifactId>slf4j-api</artifactId>
@@ -38,6 +55,16 @@
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-security</artifactId>
     </dependency>
+    <dependency>
+      <groupId>com.vladsch.flexmark</groupId>
+      <artifactId>flexmark-all</artifactId>
+      <version>0.64.8</version>
+    </dependency>
+    <dependency>
+      <groupId>org.jsoup</groupId>
+      <artifactId>jsoup</artifactId>
+      <version>1.17.2</version>
+    </dependency>
     <dependency>
       <groupId>com.mysql</groupId>
       <artifactId>mysql-connector-j</artifactId>
@@ -100,6 +127,11 @@
       <artifactId>bcprov-jdk15on</artifactId>
       <version>1.70</version>
     </dependency>
+    <dependency>
+      <groupId>org.springdoc</groupId>
+      <artifactId>springdoc-openapi-starter-webmvc-api</artifactId>
+      <version>2.2.0</version>
+    </dependency>
   </dependencies>
 
   <build>
@@ -127,6 +159,26 @@
           </annotationProcessorPaths>
         </configuration>
       </plugin>
+
+      <plugin>
+        <!-- https://github.com/OpenAPITools/openapi-generator/blob/master/modules/openapi-generator-maven-plugin/README.md -->
+        <groupId>org.springdoc</groupId>
+        <artifactId>springdoc-openapi-maven-plugin</artifactId>
+        <version>1.4</version>
+        <executions>
+          <execution>
+            <goals>
+              <goal>generate</goal>
+            </goals>
+          </execution>
+        </executions>
+        <configuration>
+          <!-- 此处为硬编码，应优化为 env 的配置 -->
+          <apiDocsUrl>http://localhost:8080/api/v3/api-docs</apiDocsUrl>
+          <outputFileName>openapi.json</outputFileName>
+          <outputDir>${project.build.directory}</outputDir>
+        </configuration>
+      </plugin>
     </plugins>
   </build>
 </project>

backend/src/main/java/com/openisle/config/ActivityInitializer.java

@@ -6,6 +6,8 @@ import com.openisle.repository.ActivityRepository;
 import lombok.RequiredArgsConstructor;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.stereotype.Component;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
 
 @Component
 @RequiredArgsConstructor
@@ -22,5 +24,16 @@ public class ActivityInitializer implements CommandLineRunner {
             a.setContent("为了有利于建站推广以及激励发布内容，我们推出了建站送奶茶的活动，前50名达到level 1的用户，可以联系站长获取奶茶/咖啡一杯");
             activityRepository.save(a);
         }
+
+        if (activityRepository.findByType(ActivityType.INVITE_POINTS) == null) {
+            Activity a = new Activity();
+            a.setTitle("🎁邀请码送积分活动");
+            a.setType(ActivityType.INVITE_POINTS);
+            a.setIcon("https://img.icons8.com/color/96/gift.png");
+            a.setContent("使用邀请码注册或邀请好友即可获得积分奖励，快来参与吧！");
+            a.setStartTime(LocalDateTime.now());
+            a.setEndTime(LocalDate.of(LocalDate.now().getYear(), 10, 1).atStartOfDay());
+            activityRepository.save(a);
+        }
     }
 }

backend/src/main/java/com/openisle/config/CachingConfig.java

@@ -0,0 +1,109 @@
+package com.openisle.config;
+
+import com.fasterxml.jackson.annotation.JsonAutoDetect;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.PropertyAccessor;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.jsontype.impl.LaissezFaireSubTypeValidator;
+import com.fasterxml.jackson.datatype.hibernate6.Hibernate6Module;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import org.springframework.cache.CacheManager;
+import org.springframework.cache.annotation.EnableCaching;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+import org.springframework.data.redis.cache.RedisCacheConfiguration;
+import org.springframework.data.redis.cache.RedisCacheManager;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.RedisSerializationContext;
+import org.springframework.data.redis.serializer.RedisSerializer;
+import org.springframework.data.redis.serializer.StringRedisSerializer;
+
+import java.time.Duration;
+
+/**
+ * Redis 缓存配置类
+ * @author smallclover
+ * @since 2025-09-04
+ */
+@Configuration
+@EnableCaching
+public class CachingConfig {
+
+    // 标签缓存名
+    public static final String TAG_CACHE_NAME="openisle_tags";
+    // 分类缓存名
+    public static final String CATEGORY_CACHE_NAME="openisle_categories";
+
+    /**
+     * 自定义Redis的序列化器
+     * @return
+     */
+    @Bean()
+    @Primary
+    public RedisSerializer<Object> redisSerializer() {
+        // 注册 JavaTimeModule 來支持 Java 8 的日期和时间 API,否则回报一下错误，同时还要引入jsr310
+
+        // org.springframework.data.redis.serializer.SerializationException: Could not write JSON: Java 8 date/time type `java.time.LocalDateTime` not supported by default:
+        // add Module "com.fasterxml.jackson.datatype:jackson-datatype-jsr310" to enable handling
+        // (through reference chain: java.util.ArrayList[0]->com.openisle.dto.TagDto["createdAt"])
+        // 设置可见性，允许序列化所有元素
+        ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.registerModule(new JavaTimeModule());
+        // Hibernate6Module 可以自动处理懒加载代理对象。
+        // Tag对象的creator是FetchType.LAZY
+        objectMapper.registerModule(new Hibernate6Module()
+                .disable(Hibernate6Module.Feature.USE_TRANSIENT_ANNOTATION));
+        // service的时候带上类型信息
+        // 启用类型信息，避免 LinkedHashMap 问题
+        objectMapper.activateDefaultTyping(
+                LaissezFaireSubTypeValidator.instance,
+                ObjectMapper.DefaultTyping.NON_FINAL,
+                JsonTypeInfo.As.PROPERTY
+        );
+        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
+        return new GenericJackson2JsonRedisSerializer(objectMapper);
+    }
+
+    /**
+     * 配置 Spring Cache 使用 RedisCacheManager
+     */
+    @Bean
+    public CacheManager cacheManager(RedisConnectionFactory connectionFactory, RedisSerializer<Object> redisSerializer) {
+
+        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
+                .entryTtl(Duration.ZERO) // 默认缓存不过期
+                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))
+                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
+                .disableCachingNullValues(); // 禁止缓存 null 值
+//        个别缓存单独设置TTL时间
+//        Map<String, RedisCacheConfiguration> cacheConfigs = new HashMap<>();
+//        cacheConfigs.put("openisle_tags", RedisCacheConfiguration.defaultCacheConfig().entryTtl(Duration.ZERO));
+//        cacheConfigs.put("openisle_categories", RedisCacheConfiguration.defaultCacheConfig().entryTtl(Duration.ZERO));
+
+        return RedisCacheManager.builder(connectionFactory)
+                .cacheDefaults(config)
+                .build();
+    }
+
+    /**
+     * 配置 RedisTemplate，支持直接操作 Redis
+     */
+    @Bean
+    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connectionFactory,  RedisSerializer<Object> redisSerializer) {
+        RedisTemplate<String, Object> template = new RedisTemplate<>();
+        template.setConnectionFactory(connectionFactory);
+
+        // key 和 hashKey 使用 String 序列化
+        template.setKeySerializer(new StringRedisSerializer());
+        template.setHashKeySerializer(new StringRedisSerializer());
+
+        // value 和 hashValue 使用 JSON 序列化
+        template.setValueSerializer(redisSerializer);
+        template.setHashValueSerializer(redisSerializer);
+
+        return template;
+    }
+}

backend/src/main/java/com/openisle/config/ChannelInitializer.java

@@ -0,0 +1,32 @@
+package com.openisle.config;
+
+import com.openisle.model.MessageConversation;
+import com.openisle.repository.MessageConversationRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class ChannelInitializer implements CommandLineRunner {
+    private final MessageConversationRepository conversationRepository;
+
+    @Override
+    public void run(String... args) {
+        if (conversationRepository.countByChannelTrue() == 0) {
+            MessageConversation chat = new MessageConversation();
+            chat.setChannel(true);
+            chat.setName("吹水群");
+            chat.setDescription("吹水聊天");
+            chat.setAvatar("https://openisle-1307107697.cos.accelerate.myqcloud.com/dynamic_assert/32647273e2334d14adfd4a6ce9db0643.jpeg");
+            conversationRepository.save(chat);
+
+            MessageConversation tech = new MessageConversation();
+            tech.setChannel(true);
+            tech.setName("技术讨论群");
+            tech.setDescription("讨论技术相关话题");
+            tech.setAvatar("https://openisle-1307107697.cos.accelerate.myqcloud.com/dynamic_assert/5edde9a5864e471caa32491dbcdaa8b2.png");
+            conversationRepository.save(tech);
+        }
+    }
+}

backend/src/main/java/com/openisle/config/OpenApiConfig.java

@@ -0,0 +1,48 @@
+package com.openisle.config;
+
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.info.Info;
+import io.swagger.v3.oas.models.security.SecurityRequirement;
+import io.swagger.v3.oas.models.security.SecurityScheme;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class OpenApiConfig {
+
+    @Value("${springdoc.info.title}")
+    private String title;
+
+    @Value("${springdoc.info.description}")
+    private String description;
+
+    @Value("${springdoc.info.version}")
+    private String version;
+
+    @Value("${springdoc.info.scheme}")
+    private String scheme;
+
+    @Value("${springdoc.info.header}")
+    private String header;
+
+    @Bean
+    public OpenAPI openAPI() {
+        SecurityScheme securityScheme = new SecurityScheme()
+			.type(SecurityScheme.Type.HTTP)
+			.scheme(scheme.toLowerCase())
+			.bearerFormat("JWT")
+			.in(SecurityScheme.In.HEADER)
+			.name(header);
+
+        return new OpenAPI()
+                .info(new Info()
+					.title(title)
+					.description(description)
+					.version(version))
+                .components(new Components()
+					.addSecuritySchemes("JWT", securityScheme))
+                .addSecurityItem(new SecurityRequirement().addList("JWT"));
+    }
+}

backend/src/main/java/com/openisle/config/PointGoodInitializer.java

@@ -0,0 +1,31 @@
+package com.openisle.config;
+
+import com.openisle.model.PointGood;
+import com.openisle.repository.PointGoodRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.stereotype.Component;
+
+/** Initialize default point mall goods. */
+@Component
+@RequiredArgsConstructor
+public class PointGoodInitializer implements CommandLineRunner {
+    private final PointGoodRepository pointGoodRepository;
+
+    @Override
+    public void run(String... args) {
+        if (pointGoodRepository.count() == 0) {
+            PointGood g1 = new PointGood();
+            g1.setName("GPT Plus 1 个月");
+            g1.setCost(20000);
+            g1.setImage("https://openisle-1307107697.cos.ap-guangzhou.myqcloud.com/assert/icons/chatgpt.png");
+            pointGoodRepository.save(g1);
+
+            PointGood g2 = new PointGood();
+            g2.setName("奶茶");
+            g2.setCost(5000);
+            g2.setImage("https://openisle-1307107697.cos.ap-guangzhou.myqcloud.com/assert/icons/coffee.png");
+            pointGoodRepository.save(g2);
+        }
+    }
+}

backend/src/main/java/com/openisle/config/RabbitMQConfig.java

@@ -0,0 +1,204 @@
+package com.openisle.config;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.amqp.core.Binding;
+import org.springframework.amqp.core.BindingBuilder;
+import org.springframework.amqp.core.Queue;
+import org.springframework.amqp.core.TopicExchange;
+import org.springframework.amqp.rabbit.connection.ConnectionFactory;
+import org.springframework.amqp.rabbit.core.RabbitTemplate;
+import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.springframework.amqp.rabbit.core.RabbitAdmin;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.context.annotation.DependsOn;
+
+import jakarta.annotation.PostConstruct;
+import java.util.ArrayList;
+import java.util.List;
+
+@Configuration
+@RequiredArgsConstructor
+public class RabbitMQConfig {
+
+    public static final String EXCHANGE_NAME = "openisle-exchange";
+    // 保持向后兼容的常量
+    public static final String QUEUE_NAME = "notifications-queue";
+    public static final String ROUTING_KEY = "notifications.routingkey";
+    
+    // 硬编码为16以匹配ShardingStrategy中的十六进制分片逻辑
+    private final int queueCount = 16;
+    
+    @Value("${rabbitmq.queue.durable}")
+    private boolean queueDurable;
+
+    @PostConstruct
+    public void init() {
+        System.out.println("RabbitMQ配置初始化: 队列数量=" + queueCount + ", 持久化=" + queueDurable);
+    }
+
+    @Bean
+    public TopicExchange exchange() {
+        return new TopicExchange(EXCHANGE_NAME);
+    }
+
+    /**
+     * 创建所有分片队列, 使用十六进制后缀 (0-f)
+     */
+    @Bean
+    public List<Queue> shardedQueues() {
+        System.out.println("开始创建分片队列 Bean...");
+        
+        List<Queue> queues = new ArrayList<>();
+        for (int i = 0; i < queueCount; i++) {
+            String shardKey = Integer.toHexString(i);
+            String queueName = "notifications-queue-" + shardKey;
+            Queue queue = new Queue(queueName, queueDurable);
+            queues.add(queue);
+        }
+        
+        System.out.println("分片队列 Bean 创建完成，总数: " + queues.size());
+        return queues;
+    }
+
+    /**
+     * 创建所有分片绑定, 使用十六进制路由键 (notifications.shard.0 - notifications.shard.f)
+     */
+    @Bean
+    public List<Binding> shardedBindings(TopicExchange exchange, @Qualifier("shardedQueues") List<Queue> shardedQueues) {
+        System.out.println("开始创建分片绑定 Bean...");
+        List<Binding> bindings = new ArrayList<>();
+        if (shardedQueues != null) {
+            for (Queue queue : shardedQueues) {
+                String queueName = queue.getName();
+                String shardKey = queueName.substring("notifications-queue-".length());
+                String routingKey = "notifications.shard." + shardKey;
+                Binding binding = BindingBuilder.bind(queue).to(exchange).with(routingKey);
+                bindings.add(binding);
+            }
+        }
+        
+        System.out.println("分片绑定 Bean 创建完成，总数: " + bindings.size());
+        return bindings;
+    }
+
+    /**
+     * 保持向后兼容的单队列配置（可选）
+     */
+    @Bean
+    public Queue legacyQueue() {
+        return new Queue(QUEUE_NAME, queueDurable);
+    }
+
+    /**
+     * 保持向后兼容的单队列绑定（可选）
+     */
+    @Bean
+    public Binding legacyBinding(Queue legacyQueue, TopicExchange exchange) {
+        return BindingBuilder.bind(legacyQueue).to(exchange).with(ROUTING_KEY);
+    }
+
+    @Bean
+    public Jackson2JsonMessageConverter messageConverter() {
+        ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.registerModule(new com.fasterxml.jackson.datatype.jsr310.JavaTimeModule());
+        objectMapper.disable(com.fasterxml.jackson.databind.SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+        return new Jackson2JsonMessageConverter(objectMapper);
+    }
+
+    @Bean
+    public RabbitAdmin rabbitAdmin(ConnectionFactory connectionFactory) {
+        return new RabbitAdmin(connectionFactory);
+    }
+
+    @Bean
+    public RabbitTemplate rabbitTemplate(ConnectionFactory connectionFactory) {
+        RabbitTemplate template = new RabbitTemplate(connectionFactory);
+        template.setMessageConverter(messageConverter());
+        return template;
+    }
+
+    /**
+     * 使用 CommandLineRunner 确保在应用完全启动后声明队列到 RabbitMQ
+     * 这样可以确保 RabbitAdmin 和所有 Bean 都已正确初始化
+     */
+    @Bean
+    @DependsOn({"rabbitAdmin", "shardedQueues", "exchange"})
+    public CommandLineRunner queueDeclarationRunner(RabbitAdmin rabbitAdmin,
+                                                   @Qualifier("shardedQueues") List<Queue> shardedQueues,
+                                                   TopicExchange exchange,
+                                                   Queue legacyQueue,
+                                                   @Qualifier("shardedBindings") List<Binding> shardedBindings,
+                                                   Binding legacyBinding) {
+        return args -> {
+            System.out.println("=== 开始主动声明 RabbitMQ 组件 ===");
+            
+            try {
+                // 声明交换
+                rabbitAdmin.declareExchange(exchange);
+                
+                // 声明分片队列 - 检查存在性
+                System.out.println("开始检查并声明 " + shardedQueues.size() + " 个分片队列...");
+                int successCount = 0;
+                int skippedCount = 0;
+                
+                for (Queue queue : shardedQueues) {
+                    String queueName = queue.getName();
+                    try {
+                        // 使用 declareQueue 的返回值判断队列是否已存在
+                        // 如果队列已存在且配置匹配，declareQueue 会返回现有队列信息
+                        // 如果不匹配或不存在，会创建新队列
+                        rabbitAdmin.declareQueue(queue);
+                        successCount++;
+                    } catch (org.springframework.amqp.AmqpIOException e) {
+                        if (e.getMessage().contains("PRECONDITION_FAILED") && e.getMessage().contains("durable")) {
+                            skippedCount++;
+                        }
+                    } catch (Exception e) {
+                        System.err.println("队列声明失败: " + queueName + ", 错误: " + e.getMessage());
+                    }
+                }
+                System.out.println("分片队列处理完成: 成功 " + successCount + ", 跳过 " + skippedCount + ", 总数 " + shardedQueues.size());
+                
+                // 声明分片绑定
+                System.out.println("开始声明 " + shardedBindings.size() + " 个分片绑定...");
+                int bindingSuccessCount = 0;
+                for (Binding binding : shardedBindings) {
+                    try {
+                        rabbitAdmin.declareBinding(binding);
+                        bindingSuccessCount++;
+                    } catch (Exception e) {
+                        System.err.println("绑定声明失败: " + e.getMessage());
+                    }
+                }
+                System.out.println("分片绑定声明完成: 成功 " + bindingSuccessCount + "/" + shardedBindings.size());
+                
+                // 声明遗留队列和绑定 - 检查存在性
+                try {
+                    rabbitAdmin.declareQueue(legacyQueue);
+                    rabbitAdmin.declareBinding(legacyBinding);
+                    System.out.println("遗留队列和绑定就绪: " + QUEUE_NAME + " (已存在或新创建)");
+                } catch (org.springframework.amqp.AmqpIOException e) {
+                    if (e.getMessage().contains("PRECONDITION_FAILED") && e.getMessage().contains("durable")) {
+                        System.out.println("遗留队列已存在但 durable 设置不匹配: " + QUEUE_NAME + ", 保持现有队列");
+                    } else {
+                        System.err.println("遗留队列声明失败: " + QUEUE_NAME + ", 错误: " + e.getMessage());
+                    }
+                } catch (Exception e) {
+                    System.err.println("遗留队列声明失败: " + QUEUE_NAME + ", 错误: " + e.getMessage());
+                }
+                
+                System.out.println("=== RabbitMQ 组件声明完成 ===");
+                System.out.println("请检查 RabbitMQ 管理界面确认队列已正确创建");
+                
+            } catch (Exception e) {
+                System.err.println("RabbitMQ 组件声明过程中发生严重错误:");
+                e.printStackTrace();
+            }
+        };
+    }
+}

backend/src/main/java/com/openisle/config/RedisConnectionLogger.java

@@ -0,0 +1,35 @@
+package com.openisle.config;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
+import org.springframework.stereotype.Component;
+
+/**
+ * Logs a message when a Redis connection is successfully established.
+ */
+@Component
+@Slf4j
+public class RedisConnectionLogger implements InitializingBean {
+
+    private final RedisConnectionFactory connectionFactory;
+
+    public RedisConnectionLogger(RedisConnectionFactory connectionFactory) {
+        this.connectionFactory = connectionFactory;
+    }
+
+    @Override
+    public void afterPropertiesSet() {
+        try (var connection = connectionFactory.getConnection()) {
+            connection.ping();
+            if (connectionFactory instanceof LettuceConnectionFactory lettuce) {
+                log.info("Redis connection established at {}:{}", lettuce.getHostName(), lettuce.getPort());
+            } else {
+                log.info("Redis connection established");
+            }
+        } catch (Exception e) {
+            log.error("Failed to connect to Redis", e);
+        }
+    }
+}

backend/src/main/java/com/openisle/config/SecurityConfig.java

@@ -74,15 +74,22 @@ public class SecurityConfig {
         CorsConfiguration cfg = new CorsConfiguration();
         cfg.setAllowedOrigins(List.of(
                 "http://127.0.0.1:8080",
+                "http://127.0.0.1:8081",
+                "http://127.0.0.1:8082",
                 "http://127.0.0.1:3000",
+                "http://127.0.0.1:3001",
                 "http://127.0.0.1",
                 "http://localhost:8080",
+                "http://localhost:8081",
+                "http://localhost:8082",
                 "http://localhost:3000",
+                "http://localhost:3001",
                 "http://localhost",
                 "http://30.211.97.238:3000",
                 "http://30.211.97.238",
-                "http://192.168.7.70",
-                "http://192.168.7.70:8080",
+                "http://192.168.7.98",
+                "http://192.168.7.98:3000",
+                "https://petstore.swagger.io",
                 websiteUrl,
                 websiteUrl.replace("://www.", "://")
         ));
@@ -97,11 +104,14 @@ public class SecurityConfig {
     @Bean
     public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
         http.csrf(csrf -> csrf.disable())
-                .cors(Customizer.withDefaults())         // 让 Spring 自带 CorsFilter 处理预检
-            .sessionManagement(sm -> sm.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
+                .cors(Customizer.withDefaults())
+                .headers(h -> h.frameOptions(f -> f.sameOrigin()))
+                .sessionManagement(sm -> sm.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
             .exceptionHandling(eh -> eh.accessDeniedHandler(customAccessDeniedHandler))
             .authorizeHttpRequests(auth -> auth
                     .requestMatchers(HttpMethod.OPTIONS, "/**").permitAll()
+                    .requestMatchers("/api/ws/**", "/api/sockjs/**").permitAll()
+                    .requestMatchers("/api/v3/api-docs/**").permitAll()
                     .requestMatchers(HttpMethod.POST, "/api/auth/**").permitAll()
                     .requestMatchers(HttpMethod.GET, "/api/posts/**").permitAll()
                     .requestMatchers(HttpMethod.GET, "/api/comments/**").permitAll()
@@ -117,6 +127,10 @@ public class SecurityConfig {
                     .requestMatchers(HttpMethod.GET, "/api/reaction-types").permitAll()
                     .requestMatchers(HttpMethod.GET, "/api/activities/**").permitAll()
                     .requestMatchers(HttpMethod.GET, "/api/sitemap.xml").permitAll()
+                    .requestMatchers(HttpMethod.GET, "/api/channels").permitAll()
+                    .requestMatchers(HttpMethod.GET, "/api/rss").permitAll()
+                    .requestMatchers(HttpMethod.GET, "/api/point-goods").permitAll()
+                    .requestMatchers(HttpMethod.POST, "/api/point-goods").permitAll()
                     .requestMatchers(HttpMethod.POST, "/api/categories/**").hasAuthority("ADMIN")
                     .requestMatchers(HttpMethod.POST, "/api/tags/**").authenticated()
                     .requestMatchers(HttpMethod.DELETE, "/api/categories/**").hasAuthority("ADMIN")
@@ -149,7 +163,9 @@ public class SecurityConfig {
                         uri.startsWith("/api/search") || uri.startsWith("/api/users") ||
                          uri.startsWith("/api/reaction-types") || uri.startsWith("/api/config") ||
                          uri.startsWith("/api/activities") || uri.startsWith("/api/push/public-key") ||
-                         uri.startsWith("/api/sitemap.xml") || uri.startsWith("/api/medals"));
+                                uri.startsWith("/api/point-goods") || uri.startsWith("/api/channels") ||
+                         uri.startsWith("/api/sitemap.xml") || uri.startsWith("/api/medals") ||
+                         uri.startsWith("/api/rss"));
 
                 if (authHeader != null && authHeader.startsWith("Bearer ")) {
                     String token = authHeader.substring(7);
@@ -165,7 +181,9 @@ public class SecurityConfig {
                         response.getWriter().write("{\"error\": \"Invalid or expired token\"}");
                         return;
                     }
-                } else if (!uri.startsWith("/api/auth") && !publicGet) {
+                } else if (!uri.startsWith("/api/auth") && !publicGet
+                        && !uri.startsWith("/api/ws") && !uri.startsWith("/api/sockjs")
+                        && !uri.startsWith("/api/v3/api-docs")) {
                     response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
                     response.setContentType("application/json");
                     response.getWriter().write("{\"error\": \"Missing token\"}");

backend/src/main/java/com/openisle/config/ShardInfo.java

@@ -0,0 +1,14 @@
+package com.openisle.config;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class ShardInfo {
+    private int shardIndex;
+    private String queueName;
+    private String routingKey;
+}

backend/src/main/java/com/openisle/config/ShardingStrategy.java

@@ -0,0 +1,84 @@
+package com.openisle.config;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.atomic.AtomicLong;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+@Component
+@Slf4j
+public class ShardingStrategy {
+    
+    // 固定为16以匹配RabbitMQConfig中的十六进制分片逻辑
+    private static final int QUEUE_COUNT = 16;
+    
+    // 分片分布统计
+    private final Map<Integer, AtomicLong> shardCounts = new ConcurrentHashMap<>();
+    
+    /**
+     * 根据用户名获取分片信息（基于哈希值首字符）
+     */
+    public ShardInfo getShardInfo(String username) {
+        if (username == null || username.isEmpty()) {
+            // 空用户名默认分到第0个分片
+            return getShardInfoByIndex(0);
+        }
+        
+        // 计算用户名的哈希值并转为十六进制字符串
+        String hash = Integer.toHexString(Math.abs(username.hashCode()));
+        
+        // 取哈希值的第一个字符 (0-9, a-f)
+        char firstChar = hash.charAt(0);
+        
+        // 十六进制字符映射到队列
+        int shard = getShardFromHexChar(firstChar);
+        recordShardUsage(shard);
+        
+        log.debug("Username '{}' -> hash '{}' -> firstChar '{}' -> shard {}", 
+                 username, hash, firstChar, shard);
+        
+        return getShardInfoByIndex(shard);
+    }
+    
+    /**
+     * 将十六进制字符映射到分片索引
+     */
+    private int getShardFromHexChar(char hexChar) {
+        int charValue;
+        if (hexChar >= '0' && hexChar <= '9') {
+            charValue = hexChar - '0'; // 0-9
+        } else if (hexChar >= 'a' && hexChar <= 'f') {
+            charValue = hexChar - 'a' + 10; // 10-15
+        } else {
+            // 异常情况，默认为0
+            charValue = 0;
+        }
+        
+        // 映射到队列数量范围内
+        return charValue % QUEUE_COUNT;
+    }
+    
+    /**
+     * 根据分片索引获取分片信息
+     */
+    private ShardInfo getShardInfoByIndex(int shard) {
+        String shardKey = Integer.toHexString(shard);
+        return new ShardInfo(
+            shard,
+            "notifications-queue-" + shardKey,
+            "notifications.shard." + shardKey
+        );
+    }
+    
+    /**
+     * 记录分片使用统计
+     */
+    private void recordShardUsage(int shard) {
+        shardCounts.computeIfAbsent(shard, k -> new AtomicLong(0)).incrementAndGet();
+    }
+
+}

backend/src/main/java/com/openisle/controller/AdminPostController.java

@@ -45,4 +45,14 @@ public class AdminPostController {
     public PostSummaryDto unpin(@PathVariable Long id) {
         return postMapper.toSummaryDto(postService.unpinPost(id));
     }
+
+    @PostMapping("/{id}/rss-exclude")
+    public PostSummaryDto excludeFromRss(@PathVariable Long id) {
+        return postMapper.toSummaryDto(postService.excludeFromRss(id));
+    }
+
+    @PostMapping("/{id}/rss-include")
+    public PostSummaryDto includeInRss(@PathVariable Long id) {
+        return postMapper.toSummaryDto(postService.includeInRss(id));
+    }
 }

backend/src/main/java/com/openisle/controller/AuthController.java

@@ -26,9 +26,11 @@ public class AuthController {
     private final GithubAuthService githubAuthService;
     private final DiscordAuthService discordAuthService;
     private final TwitterAuthService twitterAuthService;
+    private final TelegramAuthService telegramAuthService;
     private final RegisterModeService registerModeService;
     private final NotificationService notificationService;
     private final UserRepository userRepository;
+    private final InviteService inviteService;
 
 
     @Value("${app.captcha.enabled:false}")
@@ -45,6 +47,27 @@ public class AuthController {
         if (captchaEnabled && registerCaptchaEnabled && !captchaService.verify(req.getCaptcha())) {
             return ResponseEntity.badRequest().body(Map.of("error", "Invalid captcha"));
         }
+        if (req.getInviteToken() != null && !req.getInviteToken().isEmpty()) {
+            InviteService.InviteValidateResult result = inviteService.validate(req.getInviteToken());
+            if (!result.isValidate()) {
+                return ResponseEntity.badRequest().body(Map.of("error", "邀请码使用次数过多"));
+            }
+            try {
+                User user = userService.registerWithInvite(
+                        req.getUsername(), req.getEmail(), req.getPassword());
+                inviteService.consume(req.getInviteToken(), user.getUsername());
+                emailService.sendEmail(user.getEmail(), "在网站填写验证码以验证", "您的验证码是 " + user.getVerificationCode());
+                return ResponseEntity.ok(Map.of(
+                        "token", jwtService.generateToken(user.getUsername()),
+                        "reason_code", "INVITE_APPROVED"
+                ));
+            } catch (FieldException e) {
+                return ResponseEntity.badRequest().body(Map.of(
+                        "field", e.getField(),
+                        "error", e.getMessage()
+                ));
+            }
+        }
         User user = userService.register(
                 req.getUsername(), req.getEmail(), req.getPassword(), "", registerModeService.getRegisterMode());
         emailService.sendEmail(user.getEmail(), "在网站填写验证码以验证", "您的验证码是 " + user.getVerificationCode());
@@ -58,10 +81,26 @@ public class AuthController {
     public ResponseEntity<?> verify(@RequestBody VerifyRequest req) {
         boolean ok = userService.verifyCode(req.getUsername(), req.getCode());
         if (ok) {
-            return ResponseEntity.ok(Map.of(
-                    "message", "Verified",
-                    "token", jwtService.generateReasonToken(req.getUsername())
-            ));
+            Optional<User> userOpt = userService.findByUsername(req.getUsername());
+            if (userOpt.isEmpty()) {
+                return ResponseEntity.badRequest().body(Map.of("error", "Invalid credentials"));
+            }
+
+            User user = userOpt.get();
+
+            if (user.isApproved()) {
+                return ResponseEntity.ok(Map.of(
+                        "message", "Verified and isApproved",
+                        "reason_code", "VERIFIED_AND_APPROVED",
+                        "token", jwtService.generateToken(req.getUsername())
+                ));
+            } else {
+                return ResponseEntity.ok(Map.of(
+                        "message", "Verified",
+                        "reason_code", "VERIFIED",
+                        "token", jwtService.generateReasonToken(req.getUsername())
+                ));
+            }
         }
         return ResponseEntity.badRequest().body(Map.of("error", "Invalid verification code"));
     }
@@ -106,27 +145,43 @@ public class AuthController {
 
     @PostMapping("/google")
     public ResponseEntity<?> loginWithGoogle(@RequestBody GoogleLoginRequest req) {
-        Optional<User> user = googleAuthService.authenticate(req.getIdToken(), registerModeService.getRegisterMode());
-        if (user.isPresent()) {
-            if (RegisterMode.DIRECT.equals(registerModeService.getRegisterMode())) {
-                return ResponseEntity.ok(Map.of("token", jwtService.generateToken(user.get().getUsername())));
+        boolean viaInvite = req.getInviteToken() != null && !req.getInviteToken().isEmpty();
+        InviteService.InviteValidateResult inviteValidateResult = inviteService.validate(req.getInviteToken());
+        if (viaInvite && !inviteValidateResult.isValidate()) {
+            return ResponseEntity.badRequest().body(Map.of("error", "Invalid invite token"));
+        }
+        Optional<AuthResult> resultOpt = googleAuthService.authenticate(
+                req.getIdToken(),
+                registerModeService.getRegisterMode(),
+                viaInvite);
+        if (resultOpt.isPresent()) {
+            AuthResult result = resultOpt.get();
+            if (viaInvite && result.isNewUser()) {
+                inviteService.consume(req.getInviteToken(), inviteValidateResult.getInviteToken().getInviter().getUsername());
+                return ResponseEntity.ok(Map.of(
+                        "token", jwtService.generateToken(result.getUser().getUsername()),
+                        "reason_code", "INVITE_APPROVED"
+                ));
             }
-            if (!user.get().isApproved()) {
-                if (user.get().getRegisterReason() != null && !user.get().getRegisterReason().isEmpty()) {
+            if (RegisterMode.DIRECT.equals(registerModeService.getRegisterMode())) {
+                return ResponseEntity.ok(Map.of("token", jwtService.generateToken(result.getUser().getUsername())));
+            }
+            if (!result.getUser().isApproved()) {
+                if (result.getUser().getRegisterReason() != null && !result.getUser().getRegisterReason().isEmpty()) {
                     return ResponseEntity.badRequest().body(Map.of(
                             "error", "Account awaiting approval",
                             "reason_code", "IS_APPROVING",
-                            "token", jwtService.generateReasonToken(user.get().getUsername())
+                            "token", jwtService.generateReasonToken(result.getUser().getUsername())
                     ));
                 }
                 return ResponseEntity.badRequest().body(Map.of(
                         "error", "Account awaiting approval",
                         "reason_code", "NOT_APPROVED",
-                        "token", jwtService.generateReasonToken(user.get().getUsername())
+                        "token", jwtService.generateReasonToken(result.getUser().getUsername())
                 ));
             }
 
-            return ResponseEntity.ok(Map.of("token", jwtService.generateToken(user.get().getUsername())));
+            return ResponseEntity.ok(Map.of("token", jwtService.generateToken(result.getUser().getUsername())));
         }
         return ResponseEntity.badRequest().body(Map.of(
                 "error", "Invalid google token",
@@ -165,28 +220,45 @@ public class AuthController {
 
     @PostMapping("/github")
     public ResponseEntity<?> loginWithGithub(@RequestBody GithubLoginRequest req) {
-        Optional<User> user = githubAuthService.authenticate(req.getCode(), registerModeService.getRegisterMode(), req.getRedirectUri());
-        if (user.isPresent()) {
-            if (RegisterMode.DIRECT.equals(registerModeService.getRegisterMode())) {
-                return ResponseEntity.ok(Map.of("token", jwtService.generateToken(user.get().getUsername())));
+        boolean viaInvite = req.getInviteToken() != null && !req.getInviteToken().isEmpty();
+        InviteService.InviteValidateResult inviteValidateResult = inviteService.validate(req.getInviteToken());
+        if (viaInvite && !inviteValidateResult.isValidate()) {
+            return ResponseEntity.badRequest().body(Map.of("error", "Invalid invite token"));
+        }
+        Optional<AuthResult> resultOpt = githubAuthService.authenticate(
+                req.getCode(),
+                registerModeService.getRegisterMode(),
+                req.getRedirectUri(),
+                viaInvite);
+        if (resultOpt.isPresent()) {
+            AuthResult result = resultOpt.get();
+            if (viaInvite && result.isNewUser()) {
+                inviteService.consume(req.getInviteToken(), inviteValidateResult.getInviteToken().getInviter().getUsername());
+                return ResponseEntity.ok(Map.of(
+                        "token", jwtService.generateToken(result.getUser().getUsername()),
+                        "reason_code", "INVITE_APPROVED"
+                ));
             }
-            if (!user.get().isApproved()) {
-                if (user.get().getRegisterReason() != null && !user.get().getRegisterReason().isEmpty()) {
+            if (RegisterMode.DIRECT.equals(registerModeService.getRegisterMode())) {
+                return ResponseEntity.ok(Map.of("token", jwtService.generateToken(result.getUser().getUsername())));
+            }
+            if (!result.getUser().isApproved()) {
+                if (result.getUser().getRegisterReason() != null && !result.getUser().getRegisterReason().isEmpty()) {
                     // 已填写注册理由
                     return ResponseEntity.badRequest().body(Map.of(
                             "error", "Account awaiting approval",
                             "reason_code", "IS_APPROVING",
-                            "token", jwtService.generateReasonToken(user.get().getUsername())
+                            "token", jwtService.generateReasonToken(result.getUser().getUsername())
                     ));
                 }
                 return ResponseEntity.badRequest().body(Map.of(
                         "error", "Account awaiting approval",
                         "reason_code", "NOT_APPROVED",
-                        "token", jwtService.generateReasonToken(user.get().getUsername())
+                        "token", jwtService.generateReasonToken(result.getUser().getUsername())
                 ));
             }
 
-            return ResponseEntity.ok(Map.of("token", jwtService.generateToken(user.get().getUsername())));
+            return ResponseEntity.ok(Map.of("token", jwtService.generateToken(result.getUser().getUsername())));
         }
         return ResponseEntity.badRequest().body(Map.of(
                 "error", "Invalid github code",
@@ -196,27 +268,44 @@ public class AuthController {
 
     @PostMapping("/discord")
     public ResponseEntity<?> loginWithDiscord(@RequestBody DiscordLoginRequest req) {
-        Optional<User> user = discordAuthService.authenticate(req.getCode(), registerModeService.getRegisterMode(), req.getRedirectUri());
-        if (user.isPresent()) {
-            if (RegisterMode.DIRECT.equals(registerModeService.getRegisterMode())) {
-                return ResponseEntity.ok(Map.of("token", jwtService.generateToken(user.get().getUsername())));
+        boolean viaInvite = req.getInviteToken() != null && !req.getInviteToken().isEmpty();
+        InviteService.InviteValidateResult inviteValidateResult = inviteService.validate(req.getInviteToken());
+        if (viaInvite && !inviteValidateResult.isValidate()) {
+            return ResponseEntity.badRequest().body(Map.of("error", "Invalid invite token"));
+        }
+        Optional<AuthResult> resultOpt = discordAuthService.authenticate(
+                req.getCode(),
+                registerModeService.getRegisterMode(),
+                req.getRedirectUri(),
+                viaInvite);
+        if (resultOpt.isPresent()) {
+            AuthResult result = resultOpt.get();
+            if (viaInvite && result.isNewUser()) {
+                inviteService.consume(req.getInviteToken(), inviteValidateResult.getInviteToken().getInviter().getUsername());
+                return ResponseEntity.ok(Map.of(
+                        "token", jwtService.generateToken(result.getUser().getUsername()),
+                        "reason_code", "INVITE_APPROVED"
+                ));
             }
-            if (!user.get().isApproved()) {
-                if (user.get().getRegisterReason() != null && !user.get().getRegisterReason().isEmpty()) {
+            if (RegisterMode.DIRECT.equals(registerModeService.getRegisterMode())) {
+                return ResponseEntity.ok(Map.of("token", jwtService.generateToken(result.getUser().getUsername())));
+            }
+            if (!result.getUser().isApproved()) {
+                if (result.getUser().getRegisterReason() != null && !result.getUser().getRegisterReason().isEmpty()) {
                     return ResponseEntity.badRequest().body(Map.of(
                             "error", "Account awaiting approval",
                             "reason_code", "IS_APPROVING",
-                            "token", jwtService.generateReasonToken(user.get().getUsername())
+                            "token", jwtService.generateReasonToken(result.getUser().getUsername())
                     ));
                 }
                 return ResponseEntity.badRequest().body(Map.of(
                         "error", "Account awaiting approval",
                         "reason_code", "NOT_APPROVED",
-                        "token", jwtService.generateReasonToken(user.get().getUsername())
+                        "token", jwtService.generateReasonToken(result.getUser().getUsername())
                 ));
             }
 
-            return ResponseEntity.ok(Map.of("token", jwtService.generateToken(user.get().getUsername())));
+            return ResponseEntity.ok(Map.of("token", jwtService.generateToken(result.getUser().getUsername())));
         }
         return ResponseEntity.badRequest().body(Map.of(
                 "error", "Invalid discord code",
@@ -226,31 +315,45 @@ public class AuthController {
       
     @PostMapping("/twitter")
     public ResponseEntity<?> loginWithTwitter(@RequestBody TwitterLoginRequest req) {
-        Optional<User> user = twitterAuthService.authenticate(
+        boolean viaInvite = req.getInviteToken() != null && !req.getInviteToken().isEmpty();
+        InviteService.InviteValidateResult inviteValidateResult = inviteService.validate(req.getInviteToken());
+        if (viaInvite && !inviteValidateResult.isValidate()) {
+            return ResponseEntity.badRequest().body(Map.of("error", "Invalid invite token"));
+        }
+        Optional<AuthResult> resultOpt = twitterAuthService.authenticate(
                 req.getCode(),
                 req.getCodeVerifier(),
                 registerModeService.getRegisterMode(),
-                req.getRedirectUri());
-        if (user.isPresent()) {
-            if (RegisterMode.DIRECT.equals(registerModeService.getRegisterMode())) {
-                return ResponseEntity.ok(Map.of("token", jwtService.generateToken(user.get().getUsername())));
+                req.getRedirectUri(),
+                viaInvite);
+        if (resultOpt.isPresent()) {
+            AuthResult result = resultOpt.get();
+            if (viaInvite && result.isNewUser()) {
+                inviteService.consume(req.getInviteToken(), inviteValidateResult.getInviteToken().getInviter().getUsername());
+                return ResponseEntity.ok(Map.of(
+                        "token", jwtService.generateToken(result.getUser().getUsername()),
+                        "reason_code", "INVITE_APPROVED"
+                ));
             }
-            if (!user.get().isApproved()) {
-                if (user.get().getRegisterReason() != null && !user.get().getRegisterReason().isEmpty()) {
+            if (RegisterMode.DIRECT.equals(registerModeService.getRegisterMode())) {
+                return ResponseEntity.ok(Map.of("token", jwtService.generateToken(result.getUser().getUsername())));
+            }
+            if (!result.getUser().isApproved()) {
+                if (result.getUser().getRegisterReason() != null && !result.getUser().getRegisterReason().isEmpty()) {
                     return ResponseEntity.badRequest().body(Map.of(
                             "error", "Account awaiting approval",
                             "reason_code", "IS_APPROVING",
-                            "token", jwtService.generateReasonToken(user.get().getUsername())
+                            "token", jwtService.generateReasonToken(result.getUser().getUsername())
                     ));
                 }
                 return ResponseEntity.badRequest().body(Map.of(
                         "error", "Account awaiting approval",
                         "reason_code", "NOT_APPROVED",
-                        "token", jwtService.generateReasonToken(user.get().getUsername())
+                        "token", jwtService.generateReasonToken(result.getUser().getUsername())
                 ));
             }
 
-            return ResponseEntity.ok(Map.of("token", jwtService.generateToken(user.get().getUsername())));
+            return ResponseEntity.ok(Map.of("token", jwtService.generateToken(result.getUser().getUsername())));
         }
         return ResponseEntity.badRequest().body(Map.of(
                 "error", "Invalid twitter code",
@@ -258,6 +361,51 @@ public class AuthController {
         ));
     }
 
+    @PostMapping("/telegram")
+    public ResponseEntity<?> loginWithTelegram(@RequestBody TelegramLoginRequest req) {
+        boolean viaInvite = req.getInviteToken() != null && !req.getInviteToken().isEmpty();
+        InviteService.InviteValidateResult inviteValidateResult = inviteService.validate(req.getInviteToken());
+        if (viaInvite && !inviteValidateResult.isValidate()) {
+            return ResponseEntity.badRequest().body(Map.of("error", "Invalid invite token"));
+        }
+        Optional<AuthResult> resultOpt = telegramAuthService.authenticate(
+                req,
+                registerModeService.getRegisterMode(),
+                viaInvite);
+        if (resultOpt.isPresent()) {
+            AuthResult result = resultOpt.get();
+            if (viaInvite && result.isNewUser()) {
+                inviteService.consume(req.getInviteToken(), inviteValidateResult.getInviteToken().getInviter().getUsername());
+                return ResponseEntity.ok(Map.of(
+                        "token", jwtService.generateToken(result.getUser().getUsername()),
+                        "reason_code", "INVITE_APPROVED"
+                ));
+            }
+            if (RegisterMode.DIRECT.equals(registerModeService.getRegisterMode())) {
+                return ResponseEntity.ok(Map.of("token", jwtService.generateToken(result.getUser().getUsername())));
+            }
+            if (!result.getUser().isApproved()) {
+                if (result.getUser().getRegisterReason() != null && !result.getUser().getRegisterReason().isEmpty()) {
+                    return ResponseEntity.badRequest().body(Map.of(
+                            "error", "Account awaiting approval",
+                            "reason_code", "IS_APPROVING",
+                            "token", jwtService.generateReasonToken(result.getUser().getUsername())
+                    ));
+                }
+                return ResponseEntity.badRequest().body(Map.of(
+                        "error", "Account awaiting approval",
+                        "reason_code", "NOT_APPROVED",
+                        "token", jwtService.generateReasonToken(result.getUser().getUsername())
+                ));
+            }
+            return ResponseEntity.ok(Map.of("token", jwtService.generateToken(result.getUser().getUsername())));
+        }
+        return ResponseEntity.badRequest().body(Map.of(
+                "error", "Invalid telegram data",
+                "reason_code", "INVALID_CREDENTIALS"
+        ));
+    }
+
     @GetMapping("/check")
     public ResponseEntity<?> checkToken() {
         return ResponseEntity.ok(Map.of("valid", true));

backend/src/main/java/com/openisle/controller/CategoryController.java

@@ -12,6 +12,7 @@ import lombok.RequiredArgsConstructor;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
+import java.util.Map;
 import java.util.stream.Collectors;
 
 @RestController
@@ -44,8 +45,11 @@ public class CategoryController {
 
     @GetMapping
     public List<CategoryDto> list() {
-        return categoryService.listCategories().stream()
-                .map(c -> categoryMapper.toDto(c, postService.countPostsByCategory(c.getId())))
+        List<Category> all = categoryService.listCategories();
+        List<Long> ids = all.stream().map(Category::getId).toList();
+        Map<Long, Long> postsCntByCategoryIds = postService.countPostsByCategoryIds(ids);
+        return all.stream()
+                .map(c -> categoryMapper.toDto(c, postsCntByCategoryIds.getOrDefault(c.getId(), 0L)))
                 .sorted((a, b) -> Long.compare(b.getCount(), a.getCount()))
                 .collect(Collectors.toList());
     }

backend/src/main/java/com/openisle/controller/ChannelController.java

@@ -0,0 +1,42 @@
+package com.openisle.controller;
+
+import com.openisle.dto.ChannelDto;
+import com.openisle.model.User;
+import com.openisle.repository.UserRepository;
+import com.openisle.service.ChannelService;
+import com.openisle.service.MessageService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/channels")
+@RequiredArgsConstructor
+public class ChannelController {
+    private final ChannelService channelService;
+    private final MessageService messageService;
+    private final UserRepository userRepository;
+
+    private Long getCurrentUserId(Authentication auth) {
+        User user = userRepository.findByUsername(auth.getName())
+                .orElseThrow(() -> new IllegalArgumentException("User not found"));
+        return user.getId();
+    }
+
+    @GetMapping
+    public List<ChannelDto> listChannels(Authentication auth) {
+        return channelService.listChannels(getCurrentUserId(auth));
+    }
+
+    @PostMapping("/{channelId}/join")
+    public ChannelDto joinChannel(@PathVariable Long channelId, Authentication auth) {
+        return channelService.joinChannel(channelId, getCurrentUserId(auth));
+    }
+
+    @GetMapping("/unread-count")
+    public long unreadCount(Authentication auth) {
+        return messageService.getUnreadChannelCount(getCurrentUserId(auth));
+    }
+}

backend/src/main/java/com/openisle/controller/CommentController.java

@@ -47,7 +47,7 @@ public class CommentController {
         Comment comment = commentService.addComment(auth.getName(), postId, req.getContent());
         CommentDto dto = commentMapper.toDto(comment);
         dto.setReward(levelService.awardForComment(auth.getName()));
-        dto.setPointReward(pointService.awardForComment(auth.getName(),postId));
+        dto.setPointReward(pointService.awardForComment(auth.getName(), postId, comment.getId()));
         log.debug("createComment succeeded for comment {}", comment.getId());
         return ResponseEntity.ok(dto);
     }

backend/src/main/java/com/openisle/controller/InviteController.java

@@ -0,0 +1,23 @@
+package com.openisle.controller;
+
+import com.openisle.service.InviteService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Map;
+
+@RestController
+@RequestMapping("/api/invite")
+@RequiredArgsConstructor
+public class InviteController {
+    private final InviteService inviteService;
+
+    @PostMapping("/generate")
+    public Map<String, String> generate(Authentication auth) {
+        String token = inviteService.generate(auth.getName());
+        return Map.of("token", token);
+    }
+}

backend/src/main/java/com/openisle/controller/MessageController.java

@@ -0,0 +1,137 @@
+package com.openisle.controller;
+
+import com.openisle.dto.ConversationDetailDto;
+import com.openisle.dto.ConversationDto;
+import com.openisle.dto.CreateConversationRequest;
+import com.openisle.dto.CreateConversationResponse;
+import com.openisle.dto.MessageDto;
+import com.openisle.model.Message;
+import com.openisle.model.MessageConversation;
+import com.openisle.model.User;
+import com.openisle.repository.UserRepository;
+import com.openisle.service.MessageService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Sort;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/messages")
+@RequiredArgsConstructor
+public class MessageController {
+
+    private final MessageService messageService;
+    private final UserRepository userRepository;
+
+    // This is a placeholder for getting the current user's ID
+    private Long getCurrentUserId(Authentication auth) {
+        User user = userRepository.findByUsername(auth.getName()).orElseThrow(() -> new IllegalArgumentException("Sender not found"));
+        // In a real application, you would get this from the Authentication object
+        return user.getId();
+    }
+
+    @GetMapping("/conversations")
+    public ResponseEntity<List<ConversationDto>> getConversations(Authentication auth) {
+        List<ConversationDto> conversations = messageService.getConversations(getCurrentUserId(auth));
+        return ResponseEntity.ok(conversations);
+    }
+
+    @GetMapping("/conversations/{conversationId}")
+    public ResponseEntity<ConversationDetailDto> getMessages(@PathVariable Long conversationId,
+                                                               @RequestParam(defaultValue = "0") int page,
+                                                               @RequestParam(defaultValue = "20") int size,
+                                                               Authentication auth) {
+        Pageable pageable = PageRequest.of(page, size, Sort.by("createdAt").descending());
+        ConversationDetailDto conversationDetails = messageService.getConversationDetails(conversationId, getCurrentUserId(auth), pageable);
+        return ResponseEntity.ok(conversationDetails);
+    }
+
+    @PostMapping
+    public ResponseEntity<MessageDto> sendMessage(@RequestBody MessageRequest req, Authentication auth) {
+        Message message = messageService.sendMessage(getCurrentUserId(auth), req.getRecipientId(), req.getContent(), req.getReplyToId());
+        return ResponseEntity.ok(messageService.toDto(message));
+    }
+
+    @PostMapping("/conversations/{conversationId}/messages")
+    public ResponseEntity<MessageDto> sendMessageToConversation(@PathVariable Long conversationId,
+                                                                @RequestBody ChannelMessageRequest req,
+                                                                Authentication auth) {
+        Message message = messageService.sendMessageToConversation(getCurrentUserId(auth), conversationId, req.getContent(), req.getReplyToId());
+        return ResponseEntity.ok(messageService.toDto(message));
+    }
+
+    @PostMapping("/conversations/{conversationId}/read")
+    public ResponseEntity<Void> markAsRead(@PathVariable Long conversationId, Authentication auth) {
+        messageService.markConversationAsRead(conversationId, getCurrentUserId(auth));
+        return ResponseEntity.ok().build();
+    }
+
+    @PostMapping("/conversations")
+    public ResponseEntity<CreateConversationResponse> findOrCreateConversation(@RequestBody CreateConversationRequest req, Authentication auth) {
+        MessageConversation conversation = messageService.findOrCreateConversation(getCurrentUserId(auth), req.getRecipientId());
+        return ResponseEntity.ok(new CreateConversationResponse(conversation.getId()));
+    }
+
+    @GetMapping("/unread-count")
+    public ResponseEntity<Long> getUnreadCount(Authentication auth) {
+        return ResponseEntity.ok(messageService.getUnreadMessageCount(getCurrentUserId(auth)));
+    }
+
+    // A simple request DTO
+    static class MessageRequest {
+        private Long recipientId;
+        private String content;
+        private Long replyToId;
+
+        public Long getRecipientId() {
+            return recipientId;
+        }
+
+        public void setRecipientId(Long recipientId) {
+            this.recipientId = recipientId;
+        }
+
+        public String getContent() {
+            return content;
+        }
+
+        public void setContent(String content) {
+            this.content = content;
+        }
+
+        public Long getReplyToId() {
+            return replyToId;
+        }
+
+        public void setReplyToId(Long replyToId) {
+            this.replyToId = replyToId;
+        }
+    }
+
+    static class ChannelMessageRequest {
+        private String content;
+        private Long replyToId;
+
+        public String getContent() {
+            return content;
+        }
+
+        public void setContent(String content) {
+            this.content = content;
+        }
+
+        public Long getReplyToId() {
+            return replyToId;
+        }
+
+        public void setReplyToId(Long replyToId) {
+            this.replyToId = replyToId;
+        }
+    }
+}

backend/src/main/java/com/openisle/controller/NotificationController.java

@@ -23,9 +23,19 @@ public class NotificationController {
     private final NotificationMapper notificationMapper;
 
     @GetMapping
-    public List<NotificationDto> list(@RequestParam(value = "read", required = false) Boolean read,
+    public List<NotificationDto> list(@RequestParam(value = "page", defaultValue = "0") int page,
+                                      @RequestParam(value = "size", defaultValue = "30") int size,
                                       Authentication auth) {
-        return notificationService.listNotifications(auth.getName(), read).stream()
+        return notificationService.listNotifications(auth.getName(), null, page, size).stream()
+                .map(notificationMapper::toDto)
+                .collect(Collectors.toList());
+    }
+
+    @GetMapping("/unread")
+    public List<NotificationDto> listUnread(@RequestParam(value = "page", defaultValue = "0") int page,
+                                            @RequestParam(value = "size", defaultValue = "30") int size,
+                                            Authentication auth) {
+        return notificationService.listNotifications(auth.getName(), false, page, size).stream()
                 .map(notificationMapper::toDto)
                 .collect(Collectors.toList());
     }
@@ -52,4 +62,14 @@ public class NotificationController {
     public void updatePref(@RequestBody NotificationPreferenceUpdateRequest req, Authentication auth) {
         notificationService.updatePreference(auth.getName(), req.getType(), req.isEnabled());
     }
+
+    @GetMapping("/email-prefs")
+    public List<NotificationPreferenceDto> emailPrefs(Authentication auth) {
+        return notificationService.listEmailPreferences(auth.getName());
+    }
+
+    @PostMapping("/email-prefs")
+    public void updateEmailPref(@RequestBody NotificationPreferenceUpdateRequest req, Authentication auth) {
+        notificationService.updateEmailPreference(auth.getName(), req.getType(), req.isEnabled());
+    }
 }

backend/src/main/java/com/openisle/controller/PointHistoryController.java

@@ -0,0 +1,36 @@
+package com.openisle.controller;
+
+import com.openisle.dto.PointHistoryDto;
+import com.openisle.mapper.PointHistoryMapper;
+import com.openisle.service.PointService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+@RestController
+@RequestMapping("/api/point-histories")
+@RequiredArgsConstructor
+public class PointHistoryController {
+    private final PointService pointService;
+    private final PointHistoryMapper pointHistoryMapper;
+
+    @GetMapping
+    public List<PointHistoryDto> list(Authentication auth) {
+        return pointService.listHistory(auth.getName()).stream()
+                .map(pointHistoryMapper::toDto)
+                .collect(Collectors.toList());
+    }
+
+    @GetMapping("/trend")
+    public List<Map<String, Object>> trend(Authentication auth,
+                                          @RequestParam(value = "days", defaultValue = "30") int days) {
+        return pointService.trend(auth.getName(), days);
+    }
+}

backend/src/main/java/com/openisle/controller/PointMallController.java

@@ -0,0 +1,39 @@
+package com.openisle.controller;
+
+import com.openisle.dto.PointGoodDto;
+import com.openisle.dto.PointRedeemRequest;
+import com.openisle.mapper.PointGoodMapper;
+import com.openisle.model.User;
+import com.openisle.service.PointMallService;
+import com.openisle.service.UserService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+/** REST controller for point mall. */
+@RestController
+@RequestMapping("/api/point-goods")
+@RequiredArgsConstructor
+public class PointMallController {
+    private final PointMallService pointMallService;
+    private final UserService userService;
+    private final PointGoodMapper pointGoodMapper;
+
+    @GetMapping
+    public List<PointGoodDto> list() {
+        return pointMallService.listGoods().stream()
+                .map(pointGoodMapper::toDto)
+                .collect(Collectors.toList());
+    }
+
+    @PostMapping("/redeem")
+    public Map<String, Integer> redeem(@RequestBody PointRedeemRequest req, Authentication auth) {
+        User user = userService.findByIdentifier(auth.getName()).orElseThrow();
+        int point = pointMallService.redeem(user, req.getGoodId(), req.getContact());
+        return Map.of("point", point);
+    }
+}

backend/src/main/java/com/openisle/controller/PostController.java

@@ -3,6 +3,7 @@ package com.openisle.controller;
 import com.openisle.dto.PostDetailDto;
 import com.openisle.dto.PostRequest;
 import com.openisle.dto.PostSummaryDto;
+import com.openisle.dto.PollDto;
 import com.openisle.mapper.PostMapper;
 import com.openisle.model.Post;
 import com.openisle.service.*;
@@ -41,11 +42,13 @@ public class PostController {
         Post post = postService.createPost(auth.getName(), req.getCategoryId(),
                 req.getTitle(), req.getContent(), req.getTagIds(),
                 req.getType(), req.getPrizeDescription(), req.getPrizeIcon(),
-                req.getPrizeCount(), req.getStartTime(), req.getEndTime());
+                req.getPrizeCount(), req.getPointCost(),
+                req.getStartTime(), req.getEndTime(),
+                req.getOptions(), req.getMultiple());
         draftService.deleteDraft(auth.getName());
         PostDetailDto dto = postMapper.toDetailDto(post, auth.getName());
         dto.setReward(levelService.awardForPost(auth.getName()));
-        dto.setPointReward(pointService.awardForPost(auth.getName()));
+        dto.setPointReward(pointService.awardForPost(auth.getName(), post.getId()));
         return ResponseEntity.ok(dto);
     }
 
@@ -62,6 +65,16 @@ public class PostController {
         postService.deletePost(id, auth.getName());
     }
 
+    @PostMapping("/{id}/close")
+    public PostSummaryDto close(@PathVariable Long id, Authentication auth) {
+        return postMapper.toSummaryDto(postService.closePost(id, auth.getName()));
+    }
+
+    @PostMapping("/{id}/reopen")
+    public PostSummaryDto reopen(@PathVariable Long id, Authentication auth) {
+        return postMapper.toSummaryDto(postService.reopenPost(id, auth.getName()));
+    }
+
     @GetMapping("/{id}")
     public ResponseEntity<PostDetailDto> getPost(@PathVariable Long id, Authentication auth) {
         String viewer = auth != null ? auth.getName() : null;
@@ -75,6 +88,17 @@ public class PostController {
         return ResponseEntity.ok().build();
     }
 
+    @GetMapping("/{id}/poll/progress")
+    public ResponseEntity<PollDto> pollProgress(@PathVariable Long id) {
+        return ResponseEntity.ok(postMapper.toSummaryDto(postService.getPoll(id)).getPoll());
+    }
+
+    @PostMapping("/{id}/poll/vote")
+    public ResponseEntity<Void> vote(@PathVariable Long id, @RequestParam("option") List<Integer> option, Authentication auth) {
+        postService.votePoll(id, auth.getName(), option);
+        return ResponseEntity.ok().build();
+    }
+
     @GetMapping
     public List<PostSummaryDto> listPosts(@RequestParam(value = "categoryId", required = false) Long categoryId,
                                    @RequestParam(value = "categoryIds", required = false) List<Long> categoryIds,
@@ -161,4 +185,27 @@ public class PostController {
         return postService.listPostsByLatestReply(ids, tids, page, pageSize)
                 .stream().map(postMapper::toSummaryDto).collect(Collectors.toList());
     }
+
+    @GetMapping("/featured")
+    public List<PostSummaryDto> featuredPosts(@RequestParam(value = "categoryId", required = false) Long categoryId,
+                                       @RequestParam(value = "categoryIds", required = false) List<Long> categoryIds,
+                                       @RequestParam(value = "tagId", required = false) Long tagId,
+                                       @RequestParam(value = "tagIds", required = false) List<Long> tagIds,
+                                       @RequestParam(value = "page", required = false) Integer page,
+                                       @RequestParam(value = "pageSize", required = false) Integer pageSize,
+                                       Authentication auth) {
+        List<Long> ids = categoryIds;
+        if (categoryId != null) {
+            ids = java.util.List.of(categoryId);
+        }
+        List<Long> tids = tagIds;
+        if (tagId != null) {
+            tids = java.util.List.of(tagId);
+        }
+        if (auth != null) {
+            userVisitService.recordVisit(auth.getName());
+        }
+        return postService.listFeaturedPosts(ids, tids, page, pageSize)
+                .stream().map(postMapper::toSummaryDto).collect(Collectors.toList());
+    }
 }

backend/src/main/java/com/openisle/controller/ReactionController.java

@@ -36,6 +36,7 @@ public class ReactionController {
                                                    Authentication auth) {
         Reaction reaction = reactionService.reactToPost(auth.getName(), postId, req.getType());
         if (reaction == null) {
+            pointService.deductForReactionOfPost(auth.getName(), postId);
             return ResponseEntity.noContent().build();
         }
         ReactionDto dto = reactionMapper.toDto(reaction);
@@ -50,6 +51,7 @@ public class ReactionController {
                                                       Authentication auth) {
         Reaction reaction = reactionService.reactToComment(auth.getName(), commentId, req.getType());
         if (reaction == null) {
+            pointService.deductForReactionOfComment(auth.getName(), commentId);
             return ResponseEntity.noContent().build();
         }
         ReactionDto dto = reactionMapper.toDto(reaction);
@@ -57,4 +59,17 @@ public class ReactionController {
         pointService.awardForReactionOfComment(auth.getName(), commentId);
         return ResponseEntity.ok(dto);
     }
+
+    @PostMapping("/messages/{messageId}/reactions")
+    public ResponseEntity<ReactionDto> reactToMessage(@PathVariable Long messageId,
+                                                      @RequestBody ReactionRequest req,
+                                                      Authentication auth) {
+        Reaction reaction = reactionService.reactToMessage(auth.getName(), messageId, req.getType());
+        if (reaction == null) {
+            return ResponseEntity.noContent().build();
+        }
+        ReactionDto dto = reactionMapper.toDto(reaction);
+        dto.setReward(levelService.awardForReaction(auth.getName()));
+        return ResponseEntity.ok(dto);
+    }
 }

backend/src/main/java/com/openisle/controller/RssController.java

@@ -0,0 +1,352 @@
+package com.openisle.controller;
+
+import com.openisle.model.Post;
+import com.openisle.model.Comment;
+import com.openisle.model.CommentSort;
+import com.openisle.service.PostService;
+import com.openisle.service.CommentService;
+import lombok.RequiredArgsConstructor;
+import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+import org.jsoup.nodes.Element;
+import org.jsoup.safety.Safelist;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.vladsch.flexmark.ext.autolink.AutolinkExtension;
+import com.vladsch.flexmark.ext.tables.TablesExtension;
+import com.vladsch.flexmark.ext.gfm.strikethrough.StrikethroughExtension;
+import com.vladsch.flexmark.ext.gfm.tasklist.TaskListExtension;
+import com.vladsch.flexmark.html.HtmlRenderer;
+import com.vladsch.flexmark.parser.Parser;
+import com.vladsch.flexmark.util.data.MutableDataSet;
+
+import java.net.URI;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+@RestController
+@RequiredArgsConstructor
+public class RssController {
+    private final PostService postService;
+    private final CommentService commentService;
+
+    @Value("${app.website-url:https://www.open-isle.com}")
+    private String websiteUrl;
+
+    // 兼容 Markdown/HTML 两类图片写法（用于 enclosure）
+    private static final Pattern MD_IMAGE = Pattern.compile("!\\[[^\\]]*\\]\\(([^)]+)\\)");
+    private static final Pattern HTML_IMAGE = Pattern.compile("<BaseImage[^>]+src=[\"']?([^\"'>]+)[\"']?[^>]*>");
+
+    private static final DateTimeFormatter RFC1123 = DateTimeFormatter.RFC_1123_DATE_TIME;
+
+    // flexmark：Markdown -> HTML
+    private static final Parser MD_PARSER;
+    private static final HtmlRenderer MD_RENDERER;
+    static {
+        MutableDataSet opts = new MutableDataSet();
+        opts.set(Parser.EXTENSIONS, Arrays.asList(
+                TablesExtension.create(),
+                AutolinkExtension.create(),
+                StrikethroughExtension.create(),
+                TaskListExtension.create()
+        ));
+        // 允许内联 HTML（下游再做 sanitize）
+        opts.set(Parser.HTML_BLOCK_PARSER, true);
+        MD_PARSER = Parser.builder(opts).build();
+        MD_RENDERER = HtmlRenderer.builder(opts).escapeHtml(false).build();
+    }
+
+    @GetMapping(value = "/api/rss", produces = "application/rss+xml;charset=UTF-8")
+    public String feed() {
+        // 建议 20；你现在是 10，这里保留你的 10
+        List<Post> posts = postService.listLatestRssPosts(10);
+        String base = trimTrailingSlash(websiteUrl);
+
+        StringBuilder sb = new StringBuilder(4096);
+        sb.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
+        sb.append("<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">");
+        sb.append("<channel>");
+        elem(sb, "title", cdata("OpenIsle RSS"));
+        elem(sb, "link", base + "/");
+        elem(sb, "description", cdata("Latest posts"));
+        ZonedDateTime updated = posts.stream()
+                .map(p -> p.getCreatedAt().atZone(ZoneId.systemDefault()))
+                .max(Comparator.naturalOrder())
+                .orElse(ZonedDateTime.now());
+        // channel lastBuildDate（GMT）
+        elem(sb, "lastBuildDate", toRfc1123Gmt(updated));
+
+        for (Post p : posts) {
+            String link = base + "/posts/" + p.getId();
+
+            // 1) Markdown -> HTML
+            String html = renderMarkdown(p.getContent());
+
+            // 2) Sanitize（白名单增强）
+            String safeHtml = sanitizeHtml(html);
+
+            // 3) 绝对化 href/src + 强制 rel/target
+            String absHtml = absolutifyHtml(safeHtml, base);
+
+            // 4) 纯文本摘要（用于 <description>）
+            String plain = textSummary(absHtml, 180);
+
+            // 5) enclosure（首图，已绝对化）
+            String enclosure = firstImage(p.getContent());
+            if (enclosure == null) {
+                // 如果 Markdown 没有图，尝试从渲染后的 HTML 再抓一次
+                enclosure = firstImage(absHtml);
+            }
+            if (enclosure != null) {
+                enclosure = absolutifyUrl(enclosure, base);
+            }
+
+            // 6) 构造优雅的附加区块（原文链接 + 精选评论），编入 <content:encoded>
+            List<Comment> topComments = commentService
+                    .getCommentsForPost(p.getId(), CommentSort.MOST_INTERACTIONS);
+            topComments = topComments.subList(0, Math.min(10, topComments.size()));
+            String footerHtml = buildFooterHtml(base, link, topComments);
+
+            sb.append("<item>");
+            elem(sb, "title", cdata(nullSafe(p.getTitle())));
+            elem(sb, "link", link);
+            sb.append("<guid isPermaLink=\"true\">").append(link).append("</guid>");
+            elem(sb, "pubDate", toRfc1123Gmt(p.getCreatedAt().atZone(ZoneId.systemDefault())));
+            // 摘要
+            elem(sb, "description", cdata(plain));
+            // 全文（HTML）：正文 + 优雅的 Markdown 区块（已转 HTML）
+            sb.append("<content:encoded><![CDATA[")
+                    .append(absHtml)
+                    .append(footerHtml)
+                    .append("]]></content:encoded>");
+            // 首图 enclosure（图片类型）
+            if (enclosure != null) {
+                sb.append("<enclosure url=\"").append(escapeXml(enclosure)).append("\" type=\"")
+                        .append(getMimeType(enclosure)).append("\" />");
+            }
+            sb.append("</item>");
+        }
+
+        sb.append("</channel></rss>");
+        return sb.toString();
+    }
+
+    /* ===================== Markdown → HTML ===================== */
+
+    private static String renderMarkdown(String md) {
+        if (md == null || md.isEmpty()) return "";
+        return MD_RENDERER.render(MD_PARSER.parse(md));
+    }
+
+    /* ===================== Sanitize & 绝对化 ===================== */
+
+    private static String sanitizeHtml(String html) {
+        if (html == null) return "";
+        Safelist wl = Safelist.relaxed()
+                .addTags(
+                        "pre","code","figure","figcaption","picture","source",
+                        "table","thead","tbody","tr","th","td",
+                        "h1","h2","h3","h4","h5","h6",
+                        "hr","blockquote"
+                )
+                .addAttributes("a", "href", "title", "target", "rel")
+                .addAttributes("img", "src", "alt", "title", "width", "height")
+                .addAttributes("source", "srcset", "type", "media")
+                .addAttributes("code", "class")
+                .addAttributes("pre", "class")
+                .addProtocols("a", "href", "http", "https", "mailto")
+                .addProtocols("img", "src", "http", "https", "data")
+                .addProtocols("source", "srcset", "http", "https");
+        // 清除所有 on* 事件、style（避免阅读器环境差异）
+        return Jsoup.clean(html, wl);
+    }
+
+    private static String absolutifyHtml(String html, String baseUrl) {
+        if (html == null || html.isEmpty()) return "";
+        Document doc = Jsoup.parseBodyFragment(html, baseUrl);
+        // a[href]
+        for (Element a : doc.select("a[href]")) {
+            String href = a.attr("href");
+            String abs = absolutifyUrl(href, baseUrl);
+            a.attr("href", abs);
+            // 强制外链安全属性
+            a.attr("rel", "noopener noreferrer nofollow");
+            a.attr("target", "_blank");
+        }
+        // img[src]
+        for (Element img : doc.select("img[src]")) {
+            String src = img.attr("src");
+            String abs = absolutifyUrl(src, baseUrl);
+            img.attr("src", abs);
+        }
+        // source[srcset] （picture/webp）
+        for (Element s : doc.select("source[srcset]")) {
+            String srcset = s.attr("srcset");
+            s.attr("srcset", absolutifySrcset(srcset, baseUrl));
+        }
+        return doc.body().html();
+    }
+
+    private static String absolutifyUrl(String url, String baseUrl) {
+        if (url == null || url.isEmpty()) return url;
+        String u = url.trim();
+        if (u.startsWith("//")) {
+            return "https:" + u;
+        }
+        if (u.startsWith("#")) {
+            // 保留页面内锚点：拼接到首页（也可拼接到当前帖子的 link，但此处无上下文）
+            return baseUrl + "/" + u;
+        }
+        try {
+            URI base = URI.create(ensureTrailingSlash(baseUrl));
+            URI abs = base.resolve(u);
+            return abs.toString();
+        } catch (Exception e) {
+            return url;
+        }
+    }
+
+    private static String absolutifySrcset(String srcset, String baseUrl) {
+        if (srcset == null || srcset.isEmpty()) return srcset;
+        String[] parts = srcset.split(",");
+        List<String> out = new ArrayList<>(parts.length);
+        for (String part : parts) {
+            String p = part.trim();
+            if (p.isEmpty()) continue;
+            String[] seg = p.split("\\s+");
+            String url = seg[0];
+            String size = seg.length > 1 ? seg[1] : "";
+            out.add(absolutifyUrl(url, baseUrl) + (size.isEmpty() ? "" : " " + size));
+        }
+        return String.join(", ", out);
+    }
+
+    /* ===================== 摘要 & enclosure ===================== */
+
+    private static String textSummary(String html, int maxLen) {
+        if (html == null) return "";
+        String text = Jsoup.parse(html).text().replaceAll("\\s+", " ").trim();
+        if (text.length() <= maxLen) return text;
+        return text.substring(0, maxLen) + "…";
+    }
+
+    private String firstImage(String content) {
+        if (content == null) return null;
+        Matcher m = MD_IMAGE.matcher(content);
+        if (m.find()) return m.group(1);
+        m = HTML_IMAGE.matcher(content);
+        if (m.find()) return m.group(1);
+        // 再从纯 HTML 里解析一次（如果传入的是渲染后的）
+        try {
+            Document doc = Jsoup.parse(content);
+            Element img = doc.selectFirst("img[src]");
+            if (img != null) return img.attr("src");
+        } catch (Exception ignored) {}
+        return null;
+    }
+
+    private static String getMimeType(String url) {
+        String lower = url == null ? "" : url.toLowerCase(Locale.ROOT);
+        if (lower.endsWith(".png"))  return "image/png";
+        if (lower.endsWith(".gif"))  return "image/gif";
+        if (lower.endsWith(".webp")) return "image/webp";
+        if (lower.endsWith(".svg"))  return "image/svg+xml";
+        if (lower.endsWith(".avif")) return "image/avif";
+        if (lower.endsWith(".jpg") || lower.endsWith(".jpeg")) return "image/jpeg";
+        // 默认兜底
+        return "image/jpeg";
+    }
+
+    /* ===================== 附加区块（原文链接 + 精选评论） ===================== */
+
+    /**
+     * 将“原文链接 + 精选评论（最多 10 条）”以优雅的 Markdown 形式渲染为 HTML，
+     * 并做 sanitize + 绝对化，然后拼入 content:encoded 尾部。
+     */
+    private static String buildFooterHtml(String baseUrl, String originalLink, List<Comment> topComments) {
+        StringBuilder md = new StringBuilder(256);
+
+        // 分割线
+        md.append("\n\n---\n\n");
+
+        // 原文链接（强调 + 可点击）
+        md.append("**原文链接：** ")
+                .append("[").append(originalLink).append("](").append(originalLink).append(")")
+                .append("\n\n");
+
+        // 精选评论（仅当有评论时展示）
+        if (topComments != null && !topComments.isEmpty()) {
+            md.append("### 精选评论（Top ").append(Math.min(10, topComments.size())).append("）\n\n");
+            for (Comment c : topComments) {
+                String author = usernameOf(c);
+                String content = nullSafe(c.getContent()).replace("\r", "");
+                // 使用引用样式展示，提升可读性
+                md.append("> @").append(author).append(": ").append(content).append("\n\n");
+            }
+        }
+
+        // 渲染为 HTML，并保持和正文一致的处理流程
+        String html = renderMarkdown(md.toString());
+        String safe = sanitizeHtml(html);
+        return absolutifyHtml(safe, baseUrl);
+    }
+
+    private static String usernameOf(Comment c) {
+        if (c == null) return "匿名";
+        try {
+            Object authorObj = c.getAuthor();
+            if (authorObj == null) return "匿名";
+            // 反射避免直接依赖实体字段名变化（也可直接强转到具体类型）
+            String username;
+            try {
+                username = (String) authorObj.getClass().getMethod("getUsername").invoke(authorObj);
+            } catch (Exception e) {
+                username = null;
+            }
+            if (username == null || username.isEmpty()) return "匿名";
+            return username;
+        } catch (Exception ignored) {
+            return "匿名";
+        }
+    }
+
+    /* ===================== 时间/字符串/XML ===================== */
+
+    private static String toRfc1123Gmt(ZonedDateTime zdt) {
+        return zdt.withZoneSameInstant(ZoneId.of("GMT")).format(RFC1123);
+    }
+
+    private static String cdata(String s) {
+        if (s == null) return "<![CDATA[]]>";
+        // 防止出现 "]]>" 终止标记破坏 CDATA
+        return "<![CDATA[" + s.replace("]]>", "]]]]><![CDATA[>") + "]]>";
+    }
+
+    private static void elem(StringBuilder sb, String name, String value) {
+        sb.append('<').append(name).append('>').append(value).append("</").append(name).append('>');
+    }
+
+    private static String escapeXml(String s) {
+        if (s == null) return "";
+        return s.replace("&", "&amp;").replace("<", "&lt;").replace(">", "&gt;")
+                .replace("\"", "&quot;").replace("'", "&apos;");
+    }
+
+    private static String trimTrailingSlash(String s) {
+        if (s == null) return "";
+        return s.endsWith("/") ? s.substring(0, s.length() - 1) : s;
+    }
+
+    private static String ensureTrailingSlash(String s) {
+        if (s == null || s.isEmpty()) return "/";
+        return s.endsWith("/") ? s : s + "/";
+    }
+
+    private static String nullSafe(String s) { return s == null ? "" : s; }
+}

backend/src/main/java/com/openisle/controller/TagController.java

@@ -15,6 +15,7 @@ import lombok.RequiredArgsConstructor;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
+import java.util.Map;
 import java.util.stream.Collectors;
 
 @RestController
@@ -62,8 +63,11 @@ public class TagController {
     @GetMapping
     public List<TagDto> list(@RequestParam(value = "keyword", required = false) String keyword,
                              @RequestParam(value = "limit", required = false) Integer limit) {
-        List<TagDto> dtos = tagService.searchTags(keyword).stream()
-                .map(t -> tagMapper.toDto(t, postService.countPostsByTag(t.getId())))
+        List<Tag> tags = tagService.searchTags(keyword);
+        List<Long> tagIds = tags.stream().map(Tag::getId).toList();
+        Map<Long, Long> postCntByTagIds = postService.countPostsByTagIds(tagIds);
+        List<TagDto> dtos = tags.stream()
+                .map(t -> tagMapper.toDto(t, postCntByTagIds.getOrDefault(t.getId(), 0L)))
                 .sorted((a, b) -> Long.compare(b.getCount(), a.getCount()))
                 .collect(Collectors.toList());
         if (limit != null && limit > 0 && dtos.size() > limit) {

backend/src/main/java/com/openisle/controller/UserController.java

@@ -105,6 +105,17 @@ public class UserController {
                 .collect(java.util.stream.Collectors.toList());
     }
 
+    @GetMapping("/{identifier}/subscribed-posts")
+    public java.util.List<PostMetaDto> subscribedPosts(@PathVariable("identifier") String identifier,
+                                                       @RequestParam(value = "limit", required = false) Integer limit) {
+        int l = limit != null ? limit : defaultPostsLimit;
+        User user = userService.findByIdentifier(identifier).orElseThrow();
+        return subscriptionService.getSubscribedPosts(user.getUsername()).stream()
+                .limit(l)
+                .map(userMapper::toMetaDto)
+                .collect(java.util.stream.Collectors.toList());
+    }
+
     @GetMapping("/{identifier}/replies")
     public java.util.List<CommentInfoDto> userReplies(@PathVariable("identifier") String identifier,
                                                       @RequestParam(value = "limit", required = false) Integer limit) {

backend/src/main/java/com/openisle/dto/ChannelDto.java

@@ -0,0 +1,17 @@
+package com.openisle.dto;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class ChannelDto {
+    private Long id;
+    private String name;
+    private String description;
+    private String avatar;
+    private MessageDto lastMessage;
+    private long memberCount;
+    private boolean joined;
+    private long unreadCount;
+}

backend/src/main/java/com/openisle/dto/ConversationDetailDto.java

@@ -0,0 +1,16 @@
+package com.openisle.dto;
+
+import lombok.Data;
+import org.springframework.data.domain.Page;
+
+import java.util.List;
+
+@Data
+public class ConversationDetailDto {
+    private Long id;
+    private String name;
+    private boolean channel;
+    private String avatar;
+    private List<UserSummaryDto> participants;
+    private Page<MessageDto> messages;
+}

backend/src/main/java/com/openisle/dto/ConversationDto.java

@@ -0,0 +1,20 @@
+package com.openisle.dto;
+
+import lombok.Getter;
+import lombok.Setter;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Getter
+@Setter
+public class ConversationDto {
+    private Long id;
+    private String name;
+    private boolean channel;
+    private String avatar;
+    private MessageDto lastMessage;
+    private List<UserSummaryDto> participants;
+    private LocalDateTime createdAt;
+    private long unreadCount;
+}

backend/src/main/java/com/openisle/dto/CreateConversationRequest.java

@@ -0,0 +1,8 @@
+package com.openisle.dto;
+
+import lombok.Data;
+
+@Data
+public class CreateConversationRequest {
+    private Long recipientId;
+}

backend/src/main/java/com/openisle/dto/CreateConversationResponse.java

@@ -0,0 +1,12 @@
+package com.openisle.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class CreateConversationResponse {
+    private Long conversationId;
+}

backend/src/main/java/com/openisle/dto/DiscordLoginRequest.java

@@ -7,4 +7,5 @@ import lombok.Data;
 public class DiscordLoginRequest {
     private String code;
     private String redirectUri;
+    private String inviteToken;
 }

backend/src/main/java/com/openisle/dto/FeaturedMedalDto.java

@@ -0,0 +1,12 @@
+package com.openisle.dto;
+
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+@Data
+@EqualsAndHashCode(callSuper = true)
+public class FeaturedMedalDto extends MedalDto {
+    private long currentFeaturedCount;
+    private long targetFeaturedCount;
+}
+

backend/src/main/java/com/openisle/dto/GithubLoginRequest.java

@@ -7,4 +7,5 @@ import lombok.Data;
 public class GithubLoginRequest {
     private String code;
     private String redirectUri;
+    private String inviteToken;
 }

backend/src/main/java/com/openisle/dto/GoogleLoginRequest.java

@@ -6,4 +6,5 @@ import lombok.Data;
 @Data
 public class GoogleLoginRequest {
     private String idToken;
+    private String inviteToken;
 }

backend/src/main/java/com/openisle/dto/LotteryDto.java

@@ -10,6 +10,7 @@ public class LotteryDto {
     private String prizeDescription;
     private String prizeIcon;
     private int prizeCount;
+    private int pointCost;
     private LocalDateTime startTime;
     private LocalDateTime endTime;
     private List<AuthorDto> participants;

backend/src/main/java/com/openisle/dto/MessageDto.java

@@ -0,0 +1,16 @@
+package com.openisle.dto;
+
+import lombok.Data;
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Data
+public class MessageDto {
+    private Long id;
+    private String content;
+    private UserSummaryDto sender;
+    private Long conversationId;
+    private LocalDateTime createdAt;
+    private MessageDto replyTo;
+    private List<ReactionDto> reactions;
+}

backend/src/main/java/com/openisle/dto/MessageNotificationPayload.java

@@ -0,0 +1,15 @@
+package com.openisle.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.io.Serializable;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class MessageNotificationPayload implements Serializable {
+    private String targetUsername;
+    private Object payload;
+}

backend/src/main/java/com/openisle/dto/PointGoodDto.java

@@ -0,0 +1,12 @@
+package com.openisle.dto;
+
+import lombok.Data;
+
+/** Point mall good info. */
+@Data
+public class PointGoodDto {
+    private Long id;
+    private String name;
+    private int cost;
+    private String image;
+}

backend/src/main/java/com/openisle/dto/PointHistoryDto.java

@@ -0,0 +1,23 @@
+package com.openisle.dto;
+
+import com.openisle.model.PointHistoryType;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.time.LocalDateTime;
+
+@Getter
+@Setter
+public class PointHistoryDto {
+    private Long id;
+    private PointHistoryType type;
+    private int amount;
+    private int balance;
+    private Long postId;
+    private String postTitle;
+    private Long commentId;
+    private String commentContent;
+    private Long fromUserId;
+    private String fromUserName;
+    private LocalDateTime createdAt;
+}

backend/src/main/java/com/openisle/dto/PointRedeemRequest.java

@@ -0,0 +1,10 @@
+package com.openisle.dto;
+
+import lombok.Data;
+
+/** Request to redeem a point mall good. */
+@Data
+public class PointRedeemRequest {
+    private Long goodId;
+    private String contact;
+}

backend/src/main/java/com/openisle/dto/PollDto.java

@@ -0,0 +1,17 @@
+package com.openisle.dto;
+
+import lombok.Data;
+
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.Map;
+
+@Data
+public class PollDto {
+    private List<String> options;
+    private Map<Integer, Integer> votes;
+    private LocalDateTime endTime;
+    private List<AuthorDto> participants;
+    private Map<Integer, List<AuthorDto>> optionParticipants;
+    private boolean multiple;
+}

backend/src/main/java/com/openisle/dto/PostRequest.java

@@ -23,7 +23,11 @@ public class PostRequest {
     private String prizeDescription;
     private String prizeIcon;
     private Integer prizeCount;
+    private Integer pointCost;
     private LocalDateTime startTime;
     private LocalDateTime endTime;
+    // fields for poll posts
+    private List<String> options;
+    private Boolean multiple;
 }
 

backend/src/main/java/com/openisle/dto/PostSummaryDto.java

@@ -31,5 +31,8 @@ public class PostSummaryDto {
     private int pointReward;
     private PostType type;
     private LotteryDto lottery;
+    private PollDto poll;
+    private boolean rssExcluded;
+    private boolean closed;
 }
 

backend/src/main/java/com/openisle/dto/ReactionDto.java

@@ -4,7 +4,7 @@ import com.openisle.model.ReactionType;
 import lombok.Data;
 
 /**
- * DTO representing a reaction on a post or comment.
+ * DTO representing a reaction on a post, comment or message.
  */
 @Data
 public class ReactionDto {
@@ -13,6 +13,7 @@ public class ReactionDto {
     private String user;
     private Long postId;
     private Long commentId;
+    private Long messageId;
     private int reward;
 }
 

backend/src/main/java/com/openisle/dto/RegisterRequest.java

@@ -9,4 +9,5 @@ public class RegisterRequest {
     private String email;
     private String password;
     private String captcha;
+    private String inviteToken;
 }

backend/src/main/java/com/openisle/dto/TelegramLoginRequest.java

@@ -0,0 +1,16 @@
+package com.openisle.dto;
+
+import lombok.Data;
+
+/** Request for Telegram login. */
+@Data
+public class TelegramLoginRequest {
+    private String id;
+    private String firstName;
+    private String lastName;
+    private String username;
+    private String photoUrl;
+    private Long authDate;
+    private String hash;
+    private String inviteToken;
+}

backend/src/main/java/com/openisle/dto/TwitterLoginRequest.java

@@ -8,4 +8,5 @@ public class TwitterLoginRequest {
     private String code;
     private String redirectUri;
     private String codeVerifier;
+    private String inviteToken;
 }

backend/src/main/java/com/openisle/dto/UserSummaryDto.java

@@ -0,0 +1,10 @@
+package com.openisle.dto;
+
+import lombok.Data;
+
+@Data
+public class UserSummaryDto {
+    private Long id;
+    private String username;
+    private String avatar;
+}

backend/src/main/java/com/openisle/mapper/PointGoodMapper.java

@@ -0,0 +1,18 @@
+package com.openisle.mapper;
+
+import com.openisle.dto.PointGoodDto;
+import com.openisle.model.PointGood;
+import org.springframework.stereotype.Component;
+
+/** Mapper for point mall goods. */
+@Component
+public class PointGoodMapper {
+    public PointGoodDto toDto(PointGood good) {
+        PointGoodDto dto = new PointGoodDto();
+        dto.setId(good.getId());
+        dto.setName(good.getName());
+        dto.setCost(good.getCost());
+        dto.setImage(good.getImage());
+        return dto;
+    }
+}

backend/src/main/java/com/openisle/mapper/PointHistoryMapper.java

@@ -0,0 +1,34 @@
+package com.openisle.mapper;
+
+import com.openisle.dto.PointHistoryDto;
+import com.openisle.model.PointHistory;
+import org.springframework.stereotype.Component;
+
+@Component
+public class PointHistoryMapper {
+    public PointHistoryDto toDto(PointHistory history) {
+        PointHistoryDto dto = new PointHistoryDto();
+        dto.setId(history.getId());
+        dto.setType(history.getType());
+        dto.setAmount(history.getAmount());
+        dto.setBalance(history.getBalance());
+        dto.setCreatedAt(history.getCreatedAt());
+        if (history.getPost() != null) {
+            dto.setPostId(history.getPost().getId());
+            dto.setPostTitle(history.getPost().getTitle());
+        }
+        if (history.getComment() != null) {
+            dto.setCommentId(history.getComment().getId());
+            dto.setCommentContent(history.getComment().getContent());
+            if (history.getComment().getPost() != null && dto.getPostId() == null) {
+                dto.setPostId(history.getComment().getPost().getId());
+                dto.setPostTitle(history.getComment().getPost().getTitle());
+            }
+        }
+        if (history.getFromUser() != null) {
+            dto.setFromUserId(history.getFromUser().getId());
+            dto.setFromUserName(history.getFromUser().getUsername());
+        }
+        return dto;
+    }
+}

backend/src/main/java/com/openisle/mapper/PostMapper.java

@@ -5,18 +5,24 @@ import com.openisle.dto.PostDetailDto;
 import com.openisle.dto.PostSummaryDto;
 import com.openisle.dto.ReactionDto;
 import com.openisle.dto.LotteryDto;
+import com.openisle.dto.PollDto;
+import com.openisle.dto.AuthorDto;
 import com.openisle.model.CommentSort;
 import com.openisle.model.Post;
 import com.openisle.model.LotteryPost;
+import com.openisle.model.PollPost;
 import com.openisle.model.User;
+import com.openisle.model.PollVote;
 import com.openisle.service.CommentService;
 import com.openisle.service.ReactionService;
 import com.openisle.service.SubscriptionService;
+import com.openisle.repository.PollVoteRepository;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Component;
 
 import java.time.LocalDateTime;
 import java.util.List;
+import java.util.Map;
 import java.util.stream.Collectors;
 
 /** Mapper responsible for converting posts into DTOs. */
@@ -32,6 +38,7 @@ public class PostMapper {
     private final UserMapper userMapper;
     private final TagMapper tagMapper;
     private final CategoryMapper categoryMapper;
+    private final PollVoteRepository pollVoteRepository;
 
     public PostSummaryDto toSummaryDto(Post post) {
         PostSummaryDto dto = new PostSummaryDto();
@@ -63,6 +70,8 @@ public class PostMapper {
         dto.setCommentCount(commentService.countComments(post.getId()));
         dto.setStatus(post.getStatus());
         dto.setPinnedAt(post.getPinnedAt());
+        dto.setRssExcluded(post.getRssExcluded() == null || post.getRssExcluded());
+        dto.setClosed(post.isClosed());
 
         List<ReactionDto> reactions = reactionService.getReactionsForPost(post.getId())
                 .stream()
@@ -84,11 +93,26 @@ public class PostMapper {
             l.setPrizeDescription(lp.getPrizeDescription());
             l.setPrizeIcon(lp.getPrizeIcon());
             l.setPrizeCount(lp.getPrizeCount());
+            l.setPointCost(lp.getPointCost());
             l.setStartTime(lp.getStartTime());
             l.setEndTime(lp.getEndTime());
             l.setParticipants(lp.getParticipants().stream().map(userMapper::toAuthorDto).collect(Collectors.toList()));
             l.setWinners(lp.getWinners().stream().map(userMapper::toAuthorDto).collect(Collectors.toList()));
             dto.setLottery(l);
         }
+
+        if (post instanceof PollPost pp) {
+            PollDto p = new PollDto();
+            p.setOptions(pp.getOptions());
+            p.setVotes(pp.getVotes());
+            p.setEndTime(pp.getEndTime());
+            p.setParticipants(pp.getParticipants().stream().map(userMapper::toAuthorDto).collect(Collectors.toList()));
+            Map<Integer, List<AuthorDto>> optionParticipants = pollVoteRepository.findByPostId(pp.getId()).stream()
+                    .collect(Collectors.groupingBy(PollVote::getOptionIndex,
+                            Collectors.mapping(v -> userMapper.toAuthorDto(v.getUser()), Collectors.toList())));
+            p.setOptionParticipants(optionParticipants);
+            p.setMultiple(Boolean.TRUE.equals(pp.getMultiple()));
+            dto.setPoll(p);
+        }
     }
 }

backend/src/main/java/com/openisle/mapper/ReactionMapper.java

@@ -19,6 +19,9 @@ public class ReactionMapper {
         if (reaction.getComment() != null) {
             dto.setCommentId(reaction.getComment().getId());
         }
+        if (reaction.getMessage() != null) {
+            dto.setMessageId(reaction.getMessage().getId());
+        }
         dto.setReward(0);
         return dto;
     }

backend/src/main/java/com/openisle/model/ActivityType.java

@@ -3,5 +3,6 @@ package com.openisle.model;
 /** Activity type enumeration. */
 public enum ActivityType {
     NORMAL,
-    MILK_TEA
+    MILK_TEA,
+    INVITE_POINTS
 }

backend/src/main/java/com/openisle/model/Comment.java

@@ -5,6 +5,8 @@ import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
 import org.hibernate.annotations.CreationTimestamp;
+import org.hibernate.annotations.SQLDelete;
+import org.hibernate.annotations.Where;
 
 import java.time.LocalDateTime;
 
@@ -13,6 +15,8 @@ import java.time.LocalDateTime;
 @Setter
 @NoArgsConstructor
 @Table(name = "comments")
+@SQLDelete(sql = "UPDATE comments SET deleted_at = CURRENT_TIMESTAMP(6) WHERE id = ?")
+@Where(clause = "deleted_at IS NULL")
 public class Comment {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -41,4 +45,7 @@ public class Comment {
     @Column
     private LocalDateTime pinnedAt;
 
+    @Column(name = "deleted_at")
+    private LocalDateTime deletedAt;
+
 }

backend/src/main/java/com/openisle/model/Draft.java

@@ -22,7 +22,7 @@ public class Draft {
 
     private String title;
 
-    @Column(columnDefinition = "TEXT")
+    @Column(columnDefinition = "LONGTEXT")
     private String content;
 
     @ManyToOne(fetch = FetchType.LAZY, optional = false)

backend/src/main/java/com/openisle/model/InviteToken.java

@@ -0,0 +1,30 @@
+package com.openisle.model;
+
+import jakarta.persistence.*;
+import lombok.Data;
+
+import java.time.LocalDate;
+
+/**
+ * Invite token entity tracking usage counts.
+ */
+@Data
+@Entity
+public class InviteToken {
+    @Id
+    private String token;
+
+    /**
+     * Short token used in invite links. Existing records may have this field null
+     * and fall back to {@link #token} for backward compatibility.
+     */
+    @Column(unique = true)
+    private String shortToken;
+
+    @ManyToOne
+    private User inviter;
+
+    private LocalDate createdDate;
+
+    private int usageCount;
+}

backend/src/main/java/com/openisle/model/LotteryPost.java

@@ -26,6 +26,9 @@ public class LotteryPost extends Post {
     @Column(nullable = false)
     private int prizeCount;
 
+    @Column(nullable = false)
+    private int pointCost;
+
     @Column
     private LocalDateTime startTime;
 

backend/src/main/java/com/openisle/model/MedalType.java

@@ -3,6 +3,7 @@ package com.openisle.model;
 public enum MedalType {
     COMMENT,
     POST,
+    FEATURED,
     CONTRIBUTOR,
     SEED,
     PIONEER

backend/src/main/java/com/openisle/model/Message.java

@@ -0,0 +1,41 @@
+package com.openisle.model;
+
+import com.fasterxml.jackson.annotation.JsonBackReference;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import org.hibernate.annotations.CreationTimestamp;
+
+import java.time.LocalDateTime;
+
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+@Table(name = "messages")
+public class Message {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne(optional = false, fetch = FetchType.LAZY)
+    @JoinColumn(name = "conversation_id")
+    @JsonBackReference
+    private MessageConversation conversation;
+
+    @ManyToOne(optional = false, fetch = FetchType.LAZY)
+    @JoinColumn(name = "sender_id")
+    private User sender;
+
+    @Column(nullable = false, columnDefinition = "TEXT")
+    private String content;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "reply_to_id")
+    private Message replyTo;
+
+    @CreationTimestamp
+    @Column(nullable = false, updatable = false)
+    private LocalDateTime createdAt;
+}

backend/src/main/java/com/openisle/model/MessageConversation.java

@@ -0,0 +1,52 @@
+package com.openisle.model;
+
+import com.fasterxml.jackson.annotation.JsonBackReference;
+import com.fasterxml.jackson.annotation.JsonManagedReference;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import org.hibernate.annotations.CreationTimestamp;
+
+import java.time.LocalDateTime;
+import java.util.HashSet;
+import java.util.Set;
+
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+@Table(name = "message_conversations")
+public class MessageConversation {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    // Indicates whether this conversation represents a public channel
+    @Column(nullable = false)
+    private boolean channel = false;
+
+    // Channel metadata
+    private String name;
+
+    @Column(columnDefinition = "TEXT")
+    private String description;
+
+    private String avatar;
+
+    @CreationTimestamp
+    @Column(nullable = false, updatable = false)
+    private LocalDateTime createdAt;
+
+    @OneToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "last_message_id")
+    private Message lastMessage;
+
+    @OneToMany(mappedBy = "conversation", cascade = CascadeType.ALL, orphanRemoval = true)
+    @JsonBackReference
+    private Set<MessageParticipant> participants = new HashSet<>();
+
+    @OneToMany(mappedBy = "conversation", cascade = CascadeType.ALL, orphanRemoval = true)
+    @JsonBackReference
+    private Set<Message> messages = new HashSet<>();
+}

backend/src/main/java/com/openisle/model/MessageParticipant.java

@@ -0,0 +1,32 @@
+package com.openisle.model;
+
+import com.fasterxml.jackson.annotation.JsonBackReference;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import java.time.LocalDateTime;
+
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+@Table(name = "message_participants")
+public class MessageParticipant {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne(optional = false, fetch = FetchType.LAZY)
+    @JoinColumn(name = "conversation_id")
+    @JsonBackReference
+    private MessageConversation conversation;
+
+    @ManyToOne(optional = false, fetch = FetchType.LAZY)
+    @JoinColumn(name = "user_id")
+    private User user;
+
+    @Column
+    private LocalDateTime lastReadAt;
+}

backend/src/main/java/com/openisle/model/Notification.java

@@ -22,7 +22,7 @@ public class Notification {
     private Long id;
 
     @Enumerated(EnumType.STRING)
-    @Column(nullable = false)
+    @Column(nullable = false, length = 50)
     private NotificationType type;
 
     @ManyToOne(fetch = FetchType.LAZY, optional = false)

backend/src/main/java/com/openisle/model/NotificationType.java

@@ -14,6 +14,8 @@ public enum NotificationType {
     POST_REVIEW_REQUEST,
     /** Your post under review was approved or rejected */
     POST_REVIEWED,
+    /** An administrator deleted your post */
+    POST_DELETED,
     /** A subscribed post received a new comment */
     POST_UPDATED,
     /** Someone subscribed to your post */
@@ -32,10 +34,20 @@ public enum NotificationType {
     REGISTER_REQUEST,
     /** A user redeemed an activity reward */
     ACTIVITY_REDEEM,
+    /** A user redeemed a point good */
+    POINT_REDEEM,
     /** You won a lottery post */
     LOTTERY_WIN,
     /** Your lottery post was drawn */
     LOTTERY_DRAW,
+    /** Someone participated in your poll */
+    POLL_VOTE,
+    /** Your poll post has concluded */
+    POLL_RESULT_OWNER,
+    /** A poll you participated in has concluded */
+    POLL_RESULT_PARTICIPANT,
+    /** Your post was featured */
+    POST_FEATURED,
     /** You were mentioned in a post or comment */
     MENTION
 }

backend/src/main/java/com/openisle/model/PointGood.java

@@ -0,0 +1,26 @@
+package com.openisle.model;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+/** Item available in the point mall. */
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+@Table(name = "point_goods")
+public class PointGood {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(nullable = false)
+    private String name;
+
+    @Column(nullable = false)
+    private int cost;
+
+    private String image;
+}

backend/src/main/java/com/openisle/model/PointHistory.java

@@ -0,0 +1,56 @@
+package com.openisle.model;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import org.hibernate.annotations.SQLDelete;
+import org.hibernate.annotations.Where;
+
+import java.time.LocalDateTime;
+
+/** Point change history for a user. */
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+@Table(name = "point_histories")
+@SQLDelete(sql = "UPDATE point_histories SET deleted_at = CURRENT_TIMESTAMP(6) WHERE id = ?")
+@Where(clause = "deleted_at IS NULL")
+public class PointHistory {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY, optional = false)
+    @JoinColumn(name = "user_id")
+    private User user;
+
+    @Enumerated(EnumType.STRING)
+    @Column(nullable = false)
+    private PointHistoryType type;
+
+    @Column(nullable = false)
+    private int amount;
+
+    @Column(nullable = false)
+    private int balance;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "post_id")
+    private Post post;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "comment_id")
+    private Comment comment;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "from_user_id")
+    private User fromUser;
+
+    @Column(name = "created_at", nullable = false)
+    private LocalDateTime createdAt;
+
+    @Column(name = "deleted_at")
+    private LocalDateTime deletedAt;
+}

backend/src/main/java/com/openisle/model/PointHistoryType.java

@@ -0,0 +1,16 @@
+package com.openisle.model;
+
+public enum PointHistoryType {
+    POST,
+    COMMENT,
+    POST_LIKED,
+    COMMENT_LIKED,
+    POST_LIKE_CANCELLED,
+    COMMENT_LIKE_CANCELLED,
+    INVITE,
+    FEATURE,
+    SYSTEM_ONLINE,
+    REDEEM,
+    LOTTERY_JOIN,
+    LOTTERY_REWARD
+}

backend/src/main/java/com/openisle/model/PollPost.java

@@ -0,0 +1,43 @@
+package com.openisle.model;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import java.time.LocalDateTime;
+import java.util.*;
+
+@Entity
+@Table(name = "poll_posts")
+@Getter
+@Setter
+@NoArgsConstructor
+@PrimaryKeyJoinColumn(name = "post_id")
+public class PollPost extends Post {
+    @ElementCollection
+    @CollectionTable(name = "poll_post_options", joinColumns = @JoinColumn(name = "post_id"))
+    @Column(name = "option_text")
+    private List<String> options = new ArrayList<>();
+
+    @ElementCollection
+    @CollectionTable(name = "poll_post_votes", joinColumns = @JoinColumn(name = "post_id"))
+    @MapKeyColumn(name = "option_index")
+    @Column(name = "vote_count")
+    private Map<Integer, Integer> votes = new HashMap<>();
+
+    @ManyToMany
+    @JoinTable(name = "poll_participants",
+            joinColumns = @JoinColumn(name = "post_id"),
+            inverseJoinColumns = @JoinColumn(name = "user_id"))
+    private Set<User> participants = new HashSet<>();
+
+    @Column
+    private Boolean multiple = false;
+
+    @Column
+    private LocalDateTime endTime;
+
+    @Column
+    private boolean resultAnnounced = false;
+}

backend/src/main/java/com/openisle/model/PollVote.java

@@ -0,0 +1,28 @@
+package com.openisle.model;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Entity
+@Table(name = "poll_votes", uniqueConstraints = @UniqueConstraint(columnNames = {"post_id", "user_id", "option_index"}))
+@Getter
+@Setter
+@NoArgsConstructor
+public class PollVote {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY, optional = false)
+    @JoinColumn(name = "post_id")
+    private PollPost post;
+
+    @ManyToOne(fetch = FetchType.LAZY, optional = false)
+    @JoinColumn(name = "user_id")
+    private User user;
+
+    @Column(name = "option_index", nullable = false)
+    private int optionIndex;
+}

backend/src/main/java/com/openisle/model/Post.java

@@ -31,7 +31,7 @@ public class Post {
     @Column(nullable = false)
     private String title;
 
-    @Column(nullable = false, columnDefinition = "TEXT")
+    @Column(nullable = false, columnDefinition = "LONGTEXT")
     private String content;
 
     @CreationTimestamp
@@ -64,7 +64,12 @@ public class Post {
     @Column(nullable = false)
     private PostType type = PostType.NORMAL;
 
+    @Column(nullable = false)
+    private boolean closed = false;
+
     @Column
     private LocalDateTime pinnedAt;
 
+    @Column(nullable = true)
+    private Boolean rssExcluded = true;
 }

backend/src/main/java/com/openisle/model/PostType.java

@@ -2,5 +2,6 @@ package com.openisle.model;
 
 public enum PostType {
     NORMAL,
-    LOTTERY
+    LOTTERY,
+    POLL
 }

backend/src/main/java/com/openisle/model/Reaction.java

@@ -7,7 +7,7 @@ import lombok.Setter;
 import org.hibernate.annotations.CreationTimestamp;
 
 /**
- * Reaction entity representing a user's reaction to a post or comment.
+ * Reaction entity representing a user's reaction to a post, comment or message.
  */
 @Entity
 @Getter
@@ -16,7 +16,8 @@ import org.hibernate.annotations.CreationTimestamp;
 @Table(name = "reactions",
        uniqueConstraints = {
            @UniqueConstraint(columnNames = {"user_id", "post_id", "type"}),
-           @UniqueConstraint(columnNames = {"user_id", "comment_id", "type"})
+           @UniqueConstraint(columnNames = {"user_id", "comment_id", "type"}),
+           @UniqueConstraint(columnNames = {"user_id", "message_id", "type"})
        })
 public class Reaction {
     @Id
@@ -39,6 +40,10 @@ public class Reaction {
     @JoinColumn(name = "comment_id")
     private Comment comment;
 
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "message_id")
+    private Message message;
+
     @CreationTimestamp
     @Column(nullable = false, updatable = false,
             columnDefinition = "DATETIME(6) DEFAULT CURRENT_TIMESTAMP(6)")

backend/src/main/java/com/openisle/model/ReactionType.java

@@ -6,7 +6,9 @@ package com.openisle.model;
 public enum ReactionType {
     LIKE,
     DISLIKE,
+    SMILE,
     RECOMMEND,
+    CONGRATULATIONS,
     ANGRY,
     FLUSHED,
     STAR_STRUCK,
@@ -26,5 +28,5 @@ public enum ReactionType {
     CHINA,
     USA,
     JAPAN,
-    KOREA
+    KOREA,
 }

backend/src/main/java/com/openisle/model/Tag.java

@@ -38,8 +38,8 @@ public class Tag {
     @Column(nullable = false, updatable = false,
             columnDefinition = "DATETIME(6) DEFAULT CURRENT_TIMESTAMP(6)")
     private LocalDateTime createdAt;
-
-    @ManyToOne(fetch = FetchType.LAZY)
+    // 改用redis缓存之后选择立即加载策略
+    @ManyToOne(fetch = FetchType.EAGER)
     @JoinColumn(name = "creator_id")
     private User creator;
 }

backend/src/main/java/com/openisle/model/User.java

@@ -74,6 +74,12 @@ public class User {
             NotificationType.USER_ACTIVITY
     );
 
+    @ElementCollection(targetClass = NotificationType.class)
+    @CollectionTable(name = "user_disabled_email_notification_types", joinColumns = @JoinColumn(name = "user_id"))
+    @Column(name = "notification_type")
+    @Enumerated(EnumType.STRING)
+    private Set<NotificationType> disabledEmailNotificationTypes = EnumSet.noneOf(NotificationType.class);
+
     @CreationTimestamp
     @Column(nullable = false, updatable = false,
             columnDefinition = "DATETIME(6) DEFAULT CURRENT_TIMESTAMP(6)")

backend/src/main/java/com/openisle/repository/InviteTokenRepository.java

@@ -0,0 +1,16 @@
+package com.openisle.repository;
+
+import com.openisle.model.InviteToken;
+import com.openisle.model.User;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.time.LocalDate;
+import java.util.Optional;
+
+public interface InviteTokenRepository extends JpaRepository<InviteToken, String> {
+    Optional<InviteToken> findByInviterAndCreatedDate(User inviter, LocalDate createdDate);
+
+    Optional<InviteToken> findByShortToken(String shortToken);
+
+    boolean existsByShortToken(String shortToken);
+}

backend/src/main/java/com/openisle/repository/MessageConversationRepository.java

@@ -0,0 +1,37 @@
+package com.openisle.repository;
+
+import com.openisle.model.MessageConversation;
+import com.openisle.model.User;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface MessageConversationRepository extends JpaRepository<MessageConversation, Long> {
+
+    @Query("SELECT c FROM MessageConversation c LEFT JOIN FETCH c.participants p LEFT JOIN FETCH p.user WHERE c.id = :id")
+    java.util.Optional<MessageConversation> findByIdWithParticipantsAndUsers(@Param("id") Long id);
+    @Query("SELECT c FROM MessageConversation c " +
+           "WHERE c.channel = false AND size(c.participants) = 2 " +
+           "AND EXISTS (SELECT 1 FROM c.participants p1 WHERE p1.user = :user1) " +
+           "AND EXISTS (SELECT 1 FROM c.participants p2 WHERE p2.user = :user2) " +
+           "ORDER BY c.createdAt DESC")
+    List<MessageConversation> findConversationsByUsers(@Param("user1") User user1, @Param("user2") User user2);
+    
+    @Query("SELECT DISTINCT c FROM MessageConversation c " +
+           "JOIN c.participants p " +
+           "LEFT JOIN FETCH c.lastMessage lm " +
+           "LEFT JOIN FETCH lm.sender " +
+           "LEFT JOIN FETCH c.participants cp " +
+           "LEFT JOIN FETCH cp.user " +
+           "WHERE p.user.id = :userId " +
+           "ORDER BY COALESCE(lm.createdAt, c.createdAt) DESC")
+    List<MessageConversation> findConversationsByUserIdOrderByLastMessageDesc(@Param("userId") Long userId);
+
+    List<MessageConversation> findByChannelTrue();
+
+    long countByChannelTrue();
+}

backend/src/main/java/com/openisle/repository/MessageParticipantRepository.java

@@ -0,0 +1,14 @@
+package com.openisle.repository;
+
+import com.openisle.model.MessageParticipant;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+import java.util.Optional;
+
+@Repository
+public interface MessageParticipantRepository extends JpaRepository<MessageParticipant, Long> {
+    Optional<MessageParticipant> findByConversationIdAndUserId(Long conversationId, Long userId);
+    List<MessageParticipant> findByUserId(Long userId);
+}