Add Soroban build artifact size budget and optimized release profile check for accountability_vault

[1nonlypiece]

Add Soroban build artifact size budget and optimized release profile check for accountability_vault

Description

The workspace contracts/Cargo.toml defines an optimized release profile (opt-level = "z", lto, strip), but there is no check that the built .wasm stays within a size budget. Add a script/CI check that builds accountability_vault with stellar contract build and fails if the artifact exceeds a documented threshold. This guards against accidental bloat as the contract grows.

Requirements and context

• Must be secure, tested, and documented
• Should be efficient and easy to review
• Add a wasm size-budget check building contracts/accountability_vault
• Use the optimized profile already in contracts/Cargo.toml
• Document the budget and how to update it in contracts/README.md
• Wire into the contracts CI job under .github/

Suggested execution

• Fork the repo and create a branch
• git checkout -b chore/wasm-size-budget
• Implement changes
  • Add a build/size-check script and CI step
  • Update contracts/README.md
  • Verify against a current build
  • Add threshold configuration
• Test and commit
  • Run tests, cover edge cases
  • Include test output and notes

Example commit message

chore: enforce wasm size budget for accountability_vault

Guidelines

• Minimum 95 percent test coverage
• Clear documentation
• Timeframe: 96 hours

[Gozirimdev]

@Gozirimdev has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Please can I work on this ?

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

[drips-wave]

Congratulations, @Gozirimdev! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @Gozirimdev: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

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