[CT-14] Implement escrow conditional release in contrib/escrow.rs in opsce crate

[yusuftomilola]

Problem

contracts/contrib/src/escrow.rs exists but has no release_escrow() or dispute_escrow() functions. Funds can be deposited into escrow but can never be released, making escrow-based asset transfers permanently locked.

Proposed Solution

Create contracts/opsce/src/escrow_release.rs. Implement release_escrow(env, escrow_id) triggered on condition fulfillment and dispute_escrow(env, escrow_id, reason) for contested releases.

Acceptance Criteria

• create_escrow(env, asset_id, amount, recipient, condition_hash) stores an escrow record
• release_escrow(env, escrow_id) transfers funds to recipient — can be called by the depositor or admin
• dispute_escrow(env, escrow_id, reason) freezes the escrow and requires admin resolution
• resolve_dispute(env, escrow_id, release_to_recipient) called by admin to settle (admin only)
• EscrowStatus enum: Active, Released, Disputed, Resolved
• Emits escrow_released and dispute_raised events
• Unit tests cover: normal release, dispute flow, admin resolution, non-party release attempt

[supreme2580]

@supreme2580 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hi can I be assigned to this issue

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[nafiuishaaq]

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

Let me professionally implement this task as soon as possible with an ETA of 2 to 4 hours

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

[drips-wave]

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

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