Security: Lock Forfeiture & Slashing Integrity

[MichaelSovereign]

Summary

This PR hardens the asset forfeiture (slashing) process in the module to ensure economic consistency and auditability.

Changes

1. Atomic Slashing: Wrapped the forfeiture process in a transaction to prevent race conditions during penalty enforcement.
2. Audit Ledger Integration: Added logic to record the removal of forfeited micro-units in the system's primary table. This ensures that the 'slashing' event is traceable and that the total circulating supply correctly reflects the removal of these assets.
3. Input Sanitization: Implemented strict sanitization and length limits on the field to prevent database pollution or log injection.
4. Enhanced Error Reporting: Improved error messages for state transition failures.

Closes #6460

[Scottcjn]

Closing as part of Tier 0 hard-ban cleanup — see #3074 / #3104 / #3169 for the documented incident chain. All MichaelSovereign PRs are closed unread per the Tier 0 contract. No review path; no future PRs from this account will be processed. (See feedback_michaelsovereign_tier0_2026-05-02.md.)