L4 Market Gateway v3.8.8 Hardening

[dcplatforms]

Weekly Product Update: L4 Market Gateway (v3.8.8)

L4 Health & Dependency Report

• L1 Physics Engine (v10.1.5): Synchronized L4 with L1-133 resilience standards. L4 now maintains a localSafetyCache to ensure that "The Fuse Rule" and physics constraints are checked with sub-millisecond latency, even if Redis is under high load.
• L2 Grid Signal & L7 Device Gateway: Integrated hardware-agnostic alarm handling. L4 now listens to DER_ALARM_REPORTED events (broadcast by L7) to proactively halt bidding in regions experiencing critical equipment failures.
• L11 ML Engine Foundation: Finalized telemetry parity for Phase 6. All physics and confidence scores are now strictly formatted as .toFixed(4) strings in Kafka payloads and the market_bids ledger, ensuring deterministic audit trails for ML training.

Backlog Updates

• [DONE] L4-133: Sub-millisecond safety cache implementation.
• [DONE] L4-ALARM-SYNC: Regional grid locking for DER_ALARM_REPORTED events.
• [DONE] AI-PARITY: Standardized 4-decimal string formatting for all telemetry.
• [IN PROGRESS] BESS RL Bidding: Researching Reinforcement Learning models for optimized BESS market participation.

Engineering Execution

• Core Logic (index.js): Implemented the localSafetyCache and background poller. Updated the /health endpoint and Kafka producer logic to leverage cached high-fidelity metadata.
• Arbitrage Engine (BiddingOptimizer.js): Refactored the optimizer to support sub-millisecond safety validation using the local cache, reducing bidding latency and improving ISO SLA compliance.
• Security & Standards: Hardened the service startup logic for better testability and verified all outgoing data against L11 parity standards.
• Verification: Deployed verify_l4_v3_8_8.test.js to validate caching performance and alarm response logic. All 26 service tests are PASSING.

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