Archived State Restoration Walkthrough & Helper Script

[Luluameh]

Background
If an expert is inactive for a long time, their profile might get archived. Users need a clear interface and script to restore their archived state.
Goal
Provide a TypeScript script and documentation for restoring archived contract keys using Soroban's state restoration transactions.
Acceptance Criteria

• Script in scripts/restore_state.ts that detects archived keys and submits a StateArchival restoration transaction.
• Integration tests verifying that an archived expert profile can be restored and subsequently read by get_expert_profile.
• User documentation in docs/archival_recovery.md.
  Key Files
  scripts/restore_state.ts, docs/archival_recovery.md