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Phase 2 Sprint 2.1 - Queue Layer

Objective

Deploy a secure internal queue path for telemetry with dead-letter handling and integrity hashing.

Deliverables

• Internal-only NATS service in compose.
• Gateway queue publisher for accepted telemetry.
• DLQ publisher for malformed payloads.
• SHA-256 payload integrity hash in queued envelopes.
• Security tests for queue publish and DLQ behavior.

Exit Criteria

• Queue service has no public host exposure.
• Malformed telemetry is routed to DLQ.
• All queued messages include integrity hash metadata.

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