Migrate ECDSA tests to Allowlist mode (TIP-092 compliance)

[lrsaturnino]

Context

TokenStaking integration tests are failing because external deployment scripts call TokenStaking.approveApplication() which was removed in v1.3.0-dev.16 (TIP-092/TIP-100).

Current State

• TokenStaking frozen for RandomBeacon/ECDSA (only TACo active)
• Tests skipped with deprecation warnings (tactical fix from T-009)
• T-006 dual-mode fixtures implemented and ready

Migration Goal

Migrate all ECDSA integration tests from TokenStaking mode to Allowlist mode.

Timeline

• Started: 2025-10-23
• Deadline: 2025-11-06 (2 weeks)
• Estimated effort: 2-4 weeks total

Migration Approach

Use T-006 dual-mode fixtures with Allowlist mode:

const { walletRegistry, allowlist } = await walletRegistryFixture({ useAllowlist: true })

Affected Test Files

1. test/WalletRegistry.Authorization.test.ts (50+ TokenStaking calls)
2. test/WalletRegistry.CustomErrors.test.ts (3 TokenStaking calls)
3. test/WalletRegistry.Slashing.test.ts (3 TokenStaking calls)
4. test/WalletRegistry.WalletCreation.test.ts (6 TokenStaking calls)

References

• T-006 Implementation: solidity/ecdsa/test/fixtures/index.ts
• T-009 Tactical Fix: memory-bank T-009.md
• TIP-092: Beta Staker Consolidation
• TIP-100: TokenStaking sunset timeline

Success Criteria

• [ ] All affected tests migrated to Allowlist mode
• [ ] Tests pass with USE_EXTERNAL_DEPLOY=true
• [ ] Skip blocks removed (tactical fix retired)
• [ ] Test suite validates production architecture