Build exponential backoff retry strategies on sqlite_vacuum_cleaner

[francisdouglas-ux]

Problem & Goal

Implement backoff rules within the sqlite_vacuum_cleaner component to retry RPC connection timeouts gracefully.

Context & Components

• Target Repository: escrow-backend
• Module/Component: sqlite_vacuum_cleaner (Database size maintenance database vacuum)

Implementation Details

1. Review the existing codebase inside the escrow-backend directory.
2. Locate the source files relating to sqlite_vacuum_cleaner.
3. Implement the feature logic/validation rules step-by-step.
4. Ensure code conforms to codebase patterns (lints, formats, types).

Verification & Testing Requirements

• Validation check: Verify retry frequency increases up to max attempts on connection dropouts.
• Add comprehensive test cases matching these validation requirements.
• Ensure all other existing project tests continue to compile and pass.

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Note: This issue is completely self-contained and does not block or require any other issues to be resolved.

[Seermad1]

@Seermad1 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hello, this issue lines up well with my skill set and I'm confident I can resolve it. Would appreciate being assigned.

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[Tekh134]

@Tekh134 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hey maintainer,

Build and checks are all passing on my end.
I can take this issue and fix it.
Kindly assign me.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Tekh134 to this issue.

[drips-wave]

Congratulations, @Tekh134! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

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[drips-wave]

This issue has been completed by @Tekh134 as part of the Stellar Wave Program's 8th Wave 🥳

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