### 🧩 Add plugin-style architecture for future contract modules

[El-swaggerito]

Overview
Refactor the SDK so future contract modules can be added without changing the core client logic.

Requirements

• Define contract module interface
• Allow vault module to follow the interface
• Document how new modules can be added

Acceptance Criteria

• SDK supports modular contract extensions
• Vault remains functional after refactor
• Architecture guide is updated

Labels: enhancement, architecture, advance

[yusufadeagbo]

@yusufadeagbo has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

I’ll like take this issue. I have relevant experience handling similar problems and can deliver a clean, maintainable solution.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @yusufadeagbo to this issue.