feat: scoped-unfreeze by reason bitmask (#607) - #699
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thlpkee20-wq merged 2 commits intoJul 29, 2026
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- Add #[repr(u32)] to FreezeReason with explicit discriminants and to_bitmask() helper for safe bitmask operations - Introduce DataKey2::HolderFreezeMask storing a u32 bitmask instead of a single FreezeReason, with legacy EmergencyFreeze fallback on read - emergency_freeze_holder now ORs reason bits into the mask; idempotent when the reason is already active - Add clear_freeze_reason(reason) to clear a single reason bit; only fully unfreezes (removes key, emits frz_clr) when mask == 0; emits frz_rc (freeze_reason_cleared) for partial clears - emergency_unfreeze_holder delegates to clear_freeze_reason for backward compatibility - process_ofac_attestation ORs SanctionsMatch bit with legacy migration - Add get_holder_freeze_reasons query returning the raw bitmask - Update storage layout schema with HolderFreezeMask and pre-existing missing registrations - Add 10 comprehensive tests covering multi-reason freeze/clear, idempotency, event emission, and OFAC+manual interaction
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Closes #607. Adds reason-scoped unfreeze via u32 bitmask so clearing one reason does not unfreeze the holder while other reasons remain active.