4144628cb6
WHY: existing Dockerfiles copied pre-compiled arm64 binaries which cannot run on the amd64 K3s cluster (exec format error). Also fixed port conflicts when running muyu alongside iloom in docker-compose. HOW: - rewrite 3 Dockerfiles (system/inventory/gateway) to multi-stage builds using golang:1.24-alpine with CGO_ENABLED=0 GOARCH=amd64 - parameterize host ports in docker-compose to avoid conflicts (3306->13306, 6379->16379, 8080->18080) - fix inv_product unique key from product_name-only to composite (product_name, spec, color) to allow same-name products with different specs - add X-Token to Authorization header middleware in gateway for iloom frontend compatibility Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>