🔁 Solana Token Swap Program

A simple and efficient token swapping smart contract built on Solana using Anchor. This program allows two users to swap tokens directly with each other at a 1:1 ratio, with minimal fees and secure vault-based escrow.

---

🚀 How It Works

1. User A creates a swap offer:

   • Deposits Token A into a vault (a token account controlled by a PDA).
   • Specifies the amount and the token they want in return (Token B).

2. User B accepts the offer:

   • Deposits the exact amount of Token B.
   • Triggers the program to execute the swap.

3. Program Execution:

   • Token B is sent to User A.
   • Token A is released from the vault and sent to User B.
   • Vault is closed and the swap offer is deleted.
   • Both users receive the same amount they offered—no fees, no slippage.

---

📦 Program Structure

📁 Accounts

• SwapOffer – Stores details like initializer, token mints, and amount.
• Vault – Holds Token A safely under program control.
• Authority (PDA) – Has authority over the vault.
• User Token Accounts – Standard SPL token accounts for both users.

---