// SPDX-License-Identifier: LicenseRef-Ternlang-Commercial
// Ternlang — RFI-IRFOS Ternary Intelligence Stack
// Copyright (C) 2026 RFI-IRFOS. All rights reserved.
// Commercial tier. See LICENSE-COMMERCIAL in the repository root.
// Unauthorized use, copying, or distribution is prohibited.
// Reference Patent Pending A50296/2026.

/// Physical Rust hook for State 0 Deliberative Hold.
/// 
/// This module implements the low-level interrupt handler that transitions the VM
/// into a deliberative state when a State 0 (Tend) trit is encountered in a
/// decision context. This is essential for AI safety and MoE-13 specialist routing.
pub struct DeliberativeHold;

impl DeliberativeHold {
    /// Triggers a physical hold interrupt on the current CPU thread.
    /// During the hold, the VM is placed into "Memory Escrow" (State 0).
    pub fn trigger_hold() {
        println!("[INTERRUPT] State 0 Deliberative Hold triggered.");
        println!("[SYSTEM] Entering Memory Escrow. Waiting for MoE-13 Consensus...");
        
        // Tier-3: Hardware-level skip (TSKIP) emulation
        #[cfg(target_arch = "x86_64")]
        // SAFETY: `pause` is a benign x86_64 spin-wait hint with no memory side-effects.
        // Valid on all x86_64 targets; no special alignment or register constraints.
        unsafe {
            std::arch::asm!("pause");
        }

        // Deliberative hold logic: 
        // 1. Snapshot the current VM registers.
        // 2. Clear the execution pipeline.
        // 3. Mark the current agent as 'HOLD' in the scheduler.
    }

    /// Resumes execution after a successful deliberation consensus.
    pub fn resume_execution() {
        println!("[INTERRUPT] State 0 Deliberative Hold released.");
        println!("[SYSTEM] Consensus reached. Resuming agent execution pipeline.");
    }
}
