docs: add supported exchanges table and API/wallet setup guides

- Add supported exchanges table to EN, ZH-CN, JA, KO READMEs
- CEX: Binance (supported), OKX (coming soon), Bybit (coming soon)
- Perp-DEX: Hyperliquid (supported), Aster DEX (supported)
- Include referral links with fee discounts for all exchanges
- Remove What's New sections from all READMEs
- Create Binance API setup guide
- Create Hyperliquid agent wallet setup guide
- Create Aster DEX API wallet setup guide

docs/getting-started/aster-api-wallet.md

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+# Aster DEX API Wallet Setup Guide
+
+This guide explains how to create and configure an API Wallet for secure trading on Aster DEX.
+
+## Why Use API Wallet?
+
+- ✅ **Binance-compatible API**: Easy migration from Binance
+- ✅ **Separate Trading Wallet**: Enhanced security
+- ✅ **Revocable Access**: Can be disabled anytime
+- ✅ **Lower Fees**: Competitive trading fees
+
+## Prerequisites
+
+- A Web3 wallet (MetaMask, WalletConnect, etc.)
+- Funds on supported EVM chain (Ethereum, BSC, Polygon, etc.)
+
+## Step 1: Register on Aster DEX
+
+1. Visit [Aster DEX](https://www.asterdex.com/en/referral/fdfc0e) (use referral link for fee discount)
+2. Connect your Web3 wallet
+3. Complete any required verification
+
+## Step 2: Create API Wallet
+
+1. Go to [Aster API Wallet](https://www.asterdex.com/en/api-wallet)
+2. Connect your main wallet
+3. Click **Create API Wallet**
+4. Approve the transaction in your wallet
+
+## Step 3: Save API Wallet Credentials
+
+After creation, save these **immediately**:
+
+| Field | Description |
+|-------|-------------|
+| **User Address** | Your main wallet address |
+| **Signer Address** | API wallet address |
+| **Private Key** | API wallet private key |
+
+⚠️ **Important**: The private key is only shown once! Save it securely.
+
+## Step 4: Configure in NOFX
+
+Add your API wallet through the NOFX web interface:
+
+1. Open NOFX dashboard (http://localhost:3000)
+2. Go to **Exchange Configuration**
+3. Enable **Aster DEX**
+4. Enter:
+   - **User**: Your main wallet address (with `0x`)
+   - **Signer**: API wallet address (with `0x`)
+   - **Private Key**: API wallet private key (remove `0x` prefix)
+5. Save configuration
+
+## Configuration Example
+
+```
+User:        0xYOUR_MAIN_WALLET_ADDRESS
+Signer:      0xYOUR_API_WALLET_SIGNER_ADDRESS
+Private Key: your_api_wallet_private_key_without_0x
+```
+
+## Fund Your Account
+
+1. Deposit supported assets to Aster DEX
+2. Transfer to your trading account
+3. API wallet will trade using these funds
+
+## Managing Your API Wallet
+
+### Revoke Access
+
+1. Go to [Aster API Wallet](https://www.asterdex.com/en/api-wallet)
+2. Find your API wallet
+3. Click **Revoke** or **Delete**
+
+### Create New API Wallet
+
+You can create multiple API wallets:
+- Delete old wallet first (recommended)
+- Or create additional wallet for different purposes
+
+## Security Best Practices
+
+- Never share your API wallet private key
+- Store credentials in a secure password manager
+- Revoke access when not in use
+- Use separate wallets for different applications
+- Monitor API wallet activity regularly
+
+## Troubleshooting
+
+| Issue | Solution |
+|-------|----------|
+| Authentication failed | Verify User, Signer, and Private Key are correct |
+| Invalid signature | Ensure private key doesn't have `0x` prefix |
+| Insufficient balance | Deposit funds to Aster DEX |
+| API wallet not found | Create new API wallet at asterdex.com |
+
+## Supported Chains
+
+Aster DEX supports multiple EVM chains:
+- Ethereum Mainnet
+- BNB Smart Chain (BSC)
+- Polygon
+- And more...
+
+Select your preferred chain when depositing funds.