Smart Contract: Implement Emergency Withdrawal Function

[Abdulazeem-code]

Description: Allow the contract Admin to withdraw stranded tokens from the contract balance in case of routing failures or a bug.

Acceptance Criteria:

• New function emergency_withdraw(env, token, amount).
• Restricted strictly to the Admin address (admin.require_auth()).

Branching Instructions: Create branch feat/contract-emergency-withdraw from main.

[drips-wave]

Congratulations, @Johnsource-hub! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

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