Initial commit: Polymarket copy trading bot

- Backend: Spring Boot + Kotlin implementation
  - Account management with private key import
  - Leader management
  - Copy trading configuration
  - Order synchronization
  - Balance and position queries via Polymarket API
  - Ethereum RPC integration for USDC balance
  - Proxy address calculation

- Frontend: React + TypeScript
  - Account management UI
  - Mobile responsive design
  - Account import with private key/mnemonic support
  - Balance display and account details modal

- Database: MySQL with Flyway migrations
- API Integration: Polymarket CLOB API, Data API, Ethereum RPC

backend/src/main/resources/application.properties

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+# 应用配置
+spring.application.name=polymarket-bot-backend
+
+# 数据源配置
+spring.datasource.url=jdbc:mysql://localhost:3306/polymarket_bot?useSSL=false&serverTimezone=UTC&characterEncoding=utf8&allowPublicKeyRetrieval=true
+spring.datasource.username=${DB_USERNAME:root}
+spring.datasource.password=${DB_PASSWORD:11111111}
+spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
+
+# HikariCP 连接池配置
+spring.datasource.hikari.maximum-pool-size=10
+spring.datasource.hikari.minimum-idle=2
+spring.datasource.hikari.connection-timeout=30000
+
+# JPA 配置
+spring.jpa.hibernate.ddl-auto=validate
+spring.jpa.show-sql=false
+spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL8Dialect
+
+# Flyway 配置
+spring.flyway.enabled=true
+spring.flyway.locations=classpath:db/migration
+spring.flyway.baseline-on-migrate=true
+
+# 服务器配置
+server.port=${SERVER_PORT:8000}
+
+# 日志配置
+logging.level.root=INFO
+logging.level.com.wrbug.polymarketbot=DEBUG
+logging.pattern.console=%d{yyyy-MM-dd HH:mm:ss} - %msg%n
+
+# Polymarket API 配置
+polymarket.clob.base-url=https://clob.polymarket.com
+polymarket.rtds.ws-url=wss://ws-live-data.polymarket.com
+polymarket.data-api.base-url=https://data-api.polymarket.com
+
+# Ethereum RPC 配置（用于查询链上余额）
+# 可选：如果未配置，将无法查询 USDC 余额，但仍可通过 Subgraph API 查询持仓
+# 示例：https://polygon-rpc.com 或 https://polygon-mainnet.infura.io/v3/YOUR_PROJECT_ID
+ethereum.rpc.url=${ETHEREUM_RPC_URL:https://polygon-rpc.com}
+
+# 加密配置
+crypto.secret.key=${CRYPTO_SECRET_KEY:wrbug123}
+

backend/src/main/resources/db/migration/V1__create_copy_trading_accounts_table.sql

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+-- 创建账户表
+CREATE TABLE IF NOT EXISTS copy_trading_accounts (
+    id BIGINT AUTO_INCREMENT PRIMARY KEY,
+    private_key VARCHAR(500) NOT NULL COMMENT '私钥（加密存储）',
+    wallet_address VARCHAR(42) NOT NULL UNIQUE COMMENT '钱包地址（从私钥推导）',
+    api_key VARCHAR(500) NULL COMMENT 'Polymarket API Key（可选，加密存储）',
+    account_name VARCHAR(100) NULL COMMENT '账户名称',
+    is_default BOOLEAN NOT NULL DEFAULT FALSE COMMENT '是否默认账户',
+    created_at BIGINT NOT NULL COMMENT '创建时间（毫秒时间戳）',
+    updated_at BIGINT NOT NULL COMMENT '更新时间（毫秒时间戳）',
+    INDEX idx_wallet_address (wallet_address),
+    INDEX idx_is_default (is_default)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='跟单系统账户表';
+

backend/src/main/resources/db/migration/V2__add_api_secret_and_passphrase_to_accounts.sql

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+-- 添加 API Secret 和 Passphrase 字段
+ALTER TABLE copy_trading_accounts 
+ADD COLUMN api_secret VARCHAR(500) NULL COMMENT 'Polymarket API Secret（可选，加密存储）' AFTER api_key,
+ADD COLUMN api_passphrase VARCHAR(500) NULL COMMENT 'Polymarket API Passphrase（可选，加密存储）' AFTER api_secret;
+

backend/src/main/resources/db/migration/V3__add_proxy_address_to_accounts.sql

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+-- 添加代理地址字段到账户表
+ALTER TABLE copy_trading_accounts 
+ADD COLUMN proxy_address VARCHAR(42) NOT NULL COMMENT 'Polymarket 代理钱包地址（从合约获取，必须）' AFTER wallet_address;
+