fix: Dispute resolution does not release escrow on creator win

[dotunv]

Overview

When a dispute is resolved in favor of the campaign creator, the escrowed funds remain locked in the dispute state instead of being released back to the campaign balance.

Motivation

A campaign creator won a dispute but the funds were not returned to their available balance. The escrow contract was not called to release funds after the dispute resolution, leaving the creator unable to access their own raised funds.

Steps to Reproduce

1. Campaign receives contributions (escrow holds funds)
2. Contributor opens a dispute
3. Admin resolves dispute in favor of the creator
4. Campaign balance does not update — funds remain in escrow lock state

Expected Behavior

• When dispute is resolved in creator's favor, escrow release transaction should be submitted
• Campaign balance should reflect the released funds
• Creator should receive a notification that funds have been released

Acceptance Criteria

• Dispute resolution handler calls escrow release when creator wins
• Escrow release transaction is submitted on-chain
• Campaign balance is updated in the database after release
• Creator receives a notification about fund release
• If escrow release fails, the dispute status is rolled back and admin is notified
• Audit log records the release with dispute ID and transaction hash
• Tests cover: creator wins release, contributor wins (no release), release failure rollback

[DTech-Wiz1]

@DTech-Wiz1 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Please let me fix this for you ASAP.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @DTech-Wiz1 to this issue.

[Hibhee01]

@Hibhee01 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hey, I’ve looked through the issue and I’m interested in working on it. I understand the expected outcome and believe I can handle the implementation properly. Please consider assigning it to me.

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[belloaliyu11]

@belloaliyu11 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hello Maintainer, I’d love to take ownership of this issue and submit a high-quality pull request once completed.

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[Joeljosef7]

@Joeljosef7 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

I'd like to claim this issue. I can fix the creator-win flow to release escrow, update the campaign balance, notify the creator, and record the release in the audit log.

I'll also add tests for creator wins, contributor wins, and escrow-release failure with rollback.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Joeljosef7 to this issue.

[TheShnider]

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

Hi. I have reviewed this issue and would like to work on it.

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