feat: add Sub2API application for AI API gateway platform

- Add Sub2API 1Panel application configuration
- Support subscription quota distribution, API Key management, billing and load balancing
- Include docker-compose.yml, data.yml, README documentation and logo
- Support amd64 and arm64 architectures

apps/sub2api/README.md

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+# Sub2API
+
+AI API 网关平台，用于分发和管理 AI 产品订阅的 API 配额。
+
+## 功能特点
+
+- 多账号管理 - 支持多种上游账号类型（OAuth、API Key）
+- API Key 分发 - 为用户生成和管理 API Key
+- 精确计费 - Token 级别使用追踪和费用计算
+- 智能调度 - 智能账号选择，支持粘性会话
+- 并发控制 - 支持用户级和账号级并发限制
+- 限流 - 可配置的请求和 Token 限流
+- 管理后台 - Web 界面用于监控和管理
+- 外部系统集成 - 支持通过 iframe 嵌入外部系统
+
+## 快速开始
+
+### 默认端口
+
+- Web 界面: 8080
+
+### 初始化配置
+
+部署完成后，访问 `http://YOUR_SERVER_IP:8080` 进入设置向导。
+
+**数据库连接设置：**
+- PostgreSQL 主机: `postgres`（Docker 网络内使用服务名，不是 localhost）
+- Redis 主机: `redis`（Docker 网络内使用服务名，不是 localhost）
+- PostgreSQL 密码: 请使用强密码
+
+**JWT 密钥要求：**
+- 长度必须至少 32 字符
+- 生产环境请使用随机生成的强密码
+
+### 数据目录
+
+应用数据存储在 Docker 命名卷中：
+- `postgres_data` - PostgreSQL 数据库数据
+- `redis_data` - Redis 缓存数据
+- `./data` - 应用配置和数据
+
+## 相关链接
+
+- 官方网站: https://sub2api.org
+- GitHub: https://github.com/Wei-Shaw/sub2api
+- 在线演示: https://demo.sub2api.org/
+
+## 注意事项
+
+1. **数据库连接**：在 Docker 部署中，PostgreSQL 和 Redis 使用服务名（`postgres`、`redis`）进行连接，请勿使用 `localhost`
+
+2. **JWT 密钥**：必须至少 32 字符，建议使用随机字符串
+
+3. **首次部署**：如果遇到数据库连接错误，请确保：
+   - PostgreSQL 容器已完全启动（等待约 10-30 秒）
+   - 旧的损坏数据卷已清除（使用 `docker compose down -v`）
+
+4. **安全提醒**：
+   - 本项目仅供个人学习使用
+   - 使用者必须在遵循 Anthropic、OpenAI 等服务条款的情况下使用
+   - 请勿用于非法用途

apps/sub2api/README_en.md

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+# Sub2API
+
+AI API Gateway Platform for subscription quota distribution.
+
+## Features
+
+- Multi-Account Management - Support multiple upstream account types (OAuth, API Key)
+- API Key Distribution - Generate and manage API Keys for users
+- Precise Billing - Token-level usage tracking and cost calculation
+- Smart Scheduling - Intelligent account selection with sticky sessions
+- Concurrency Control - Per-user and per-account concurrency limits
+- Rate Limiting - Configurable request and token rate limits
+- Admin Dashboard - Web interface for monitoring and management
+- External System Integration - Embed external systems via iframe
+
+## Quick Start
+
+### Default Port
+
+- Web UI: 8080
+
+### Initial Setup
+
+After deployment, access `http://YOUR_SERVER_IP:8080` to run the setup wizard.
+
+**Database Connection Settings:**
+- PostgreSQL Host: `postgres` (use service name in Docker network, NOT localhost)
+- Redis Host: `redis` (use service name in Docker network, NOT localhost)
+- PostgreSQL Password: Please use a strong password
+
+**JWT Secret Requirements:**
+- Length must be at least 32 characters
+- Use a randomly generated strong password for production
+
+### Data Directory
+
+Application data is stored in Docker named volumes:
+- `postgres_data` - PostgreSQL database data
+- `redis_data` - Redis cache data
+- `./data` - Application configuration and data
+
+## Links
+
+- Website: https://sub2api.org
+- GitHub: https://github.com/Wei-Shaw/sub2api
+- Demo: https://demo.sub2api.org/
+
+## Important Notes
+
+1. **Database Connection**: In Docker deployment, PostgreSQL and Redis use service names (`postgres`, `redis`) for connection. Do NOT use `localhost`
+
+2. **JWT Secret**: Must be at least 32 characters, use a random string recommended
+
+3. **First Deployment**: If you encounter database connection errors, ensure:
+   - PostgreSQL container has fully started (wait about 10-30 seconds)
+   - Old corrupted data volumes are cleared (use `docker compose down -v`)
+
+4. **Disclaimer**:
+   - This project is for personal learning purposes only
+   - Users must comply with the Terms of Service of Anthropic, OpenAI, etc.
+   - Do not use for illegal purposes

apps/sub2api/data.yml

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+name: Sub2API
+tags:
+    - AI / 大模型
+title: Sub2API - AI API 网关平台
+description: Sub2API - AI API 网关平台
+additionalProperties:
+  key: sub2api
+  name: Sub2API
+  tags:
+    - AI
+  shortDescZh: AI API 网关平台，支持订阅配额分发、API Key 管理、计费和负载均衡
+  shortDescEn: AI API gateway platform for subscription quota distribution
+  type: website
+  crossVersionUpdate: true
+  limit: 0
+  recommend: 0
+  website: https://sub2api.org
+  github: https://github.com/Wei-Shaw/sub2api
+  document: https://github.com/Wei-Shaw/sub2api
+  architectures:
+    - amd64
+    - arm64

apps/sub2api/latest/config.yaml

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+server:
+  host: "0.0.0.0"
+  port: 8080
+  mode: "release"
+
+database:
+  host: "postgres"
+  port: 5432
+  user: "sub2api"
+  password: "${POSTGRES_PASSWORD}"
+  dbname: "sub2api"
+
+redis:
+  host: "redis"
+  port: 6379
+  password: ""
+
+jwt:
+  secret: "sub2api_jwt_secret_change_in_production_32chars"
+  expire_hour: 24

apps/sub2api/latest/data.yml

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+additionalProperties:
+  formFields:
+    - default: 8080
+      edit: true
+      envKey: PANEL_APP_PORT_HTTP
+      labelEn: Web Port
+      labelZh: Web 端口
+      required: true
+      rule: paramPort
+      type: number
+    - default: Asia/Shanghai
+      edit: true
+      envKey: TZ
+      labelEn: Time Zone
+      labelZh: 时区
+      required: true
+      type: text
+    - default: sub2api_secure_jwt_secret_change_in_production
+      edit: true
+      envKey: JWT_SECRET
+      labelEn: JWT Secret
+      labelZh: JWT 密钥
+      required: true
+      rule: paramCommon
+      type: password
+    - default: sub2api_secure_db_password_change_in_production
+      edit: true
+      envKey: POSTGRES_PASSWORD
+      labelEn: PostgreSQL Password
+      labelZh: PostgreSQL 密码
+      required: true
+      rule: paramCommon
+      type: password

apps/sub2api/latest/data/config.yml

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+server:
+  host: "0.0.0.0"
+  port: 8080
+  mode: "release"
+
+database:
+  host: "postgres"
+  port: 5432
+  user: "sub2api"
+  password: "${POSTGRES_PASSWORD}"
+  dbname: "sub2api"
+
+redis:
+  host: "redis"
+  port: 6379
+  password: ""
+
+jwt:
+  secret: "${JWT_SECRET}"
+  expire_hour: 24
+
+default:
+  user_concurrency: 5
+  user_balance: 0
+  api_key_prefix: "sk-"
+  rate_multiplier: 1.0

apps/sub2api/latest/docker-compose.yml

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+services:
+  sub2api:
+    image: weishaw/sub2api:latest
+    container_name: ${CONTAINER_NAME}
+    restart: always
+    networks:
+      - 1panel-network
+    ports:
+      - "${PANEL_APP_PORT_HTTP}:8080"
+    volumes:
+      - ./data:/app/data
+      - ./config.yaml:/app/config.yaml:ro
+    environment:
+      - TZ=${TZ}
+      - POSTGRES_CONN_STRING=postgres://sub2api:${POSTGRES_PASSWORD}@postgres:5432/sub2api?sslmode=disable
+      - REDIS_CONN_STRING=redis://redis:6379/0
+      - JWT_SECRET=${JWT_SECRET}
+    labels:
+      createdBy: "Apps"
+    depends_on:
+      - postgres
+      - redis
+
+  postgres:
+    image: postgres:15-alpine
+    container_name: ${CONTAINER_NAME}-postgres
+    restart: always
+    networks:
+      - 1panel-network
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    environment:
+      - POSTGRES_DB=sub2api
+      - POSTGRES_USER=sub2api
+      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
+    labels:
+      createdBy: "Apps"
+
+  redis:
+    image: redis:7-alpine
+    container_name: ${CONTAINER_NAME}-redis
+    restart: always
+    networks:
+      - 1panel-network
+    volumes:
+      - redis_data:/data
+    command: redis-server --appendonly yes
+    labels:
+      createdBy: "Apps"
+
+networks:
+  1panel-network:
+    external: true
+
+volumes:
+  postgres_data:
+  redis_data: