[Feature] Dynamic Swap Fees Based on Pool Volatility

[AlAfiz]

Description: Upgrade the AMM logic from a fixed 0.3% swap fee to a dynamic fee model that increases during times of high market volatility and decreases during stable periods.
Context / Motivation: Fixed fees often fail to compensate LPs adequately during high-volatility events, leading to impermanent loss. A dynamic fee curve protects LPs and optimizes volume during calm periods.
Acceptance Criteria: - [ ] Implement a volatility oracle based on recent trade sizes and price impacts over the last N ledgers.

• Create a fee calculation function that scales between MIN_FEE (0.1%) and MAX_FEE (1.0%) based on the volatility metric.
• Integrate this calculation securely into the main swap entrypoint.
  Technical Pointers: You will need to maintain a moving average of recent price shifts in instance or persistent storage. Keep the math lightweight to avoid exceeding Soroban's instruction limits.

[senmalong]

Hello,

Please I’d love to take this issue on. I’m a smart contract and full-stack developer with experience across OnlyDust, Drips Waves

My stack includes Rust, Soroban, Cairo, Solidity, and TypeScript. I can deliver a clean, tested, and well-documented solution within 24 hours of assignment.

Happy to start immediately.

[Menjay7]

Hi! I came across this issue and would love to work on it. I have experience with similar tasks and I'm confident I can investigate, implement a clean solution, and thoroughly test it before submitting a PR. If the issue is still open, I would appreciate it if you could assign it to me. Thank you!

[gloskull]

Hi, I would love to work on this Issue.
I have 4 years of experience delivering solutions for projects like this, covering backend, frontend, full-stack and smart contract development. After carefully reviewing your requirements, I have a clear understanding of the task and am confident in my ability to deliver a clean, efficient, and thoroughly tested solution on time. I prioritize code quality, maintainability, and industry best practices throughout the development process.
My PR will be submitted in under 10hours.

[gloskull]

Hi, I would love to work on this Issue.
I have 4 years of experience delivering solutions for projects like this, covering backend, frontend, full-stack and smart contract development. After carefully reviewing your requirements, I have a clear understanding of the task and am confident in my ability to deliver a clean, efficient, and thoroughly tested solution on time. I prioritize code quality, maintainability, and industry best practices throughout the development process.
My PR will be submitted in under 10hours.