fix(network): clean up localized runtime output

[LucaLin233]

Summary

• remove duplicate module and success output
• localize measurement, cache, RTT, initcwnd, qdisc, and status display values
• format nodes, directional TCP buffer limits, and manual input consistently
• emit persisted measurement warnings once through the unified warning path

Compatibility

• keep cache format, version, and persisted internal metadata unchanged
• keep tuning calculations, sysctl values, routing, transactions, restore, and traffic-shape behavior unchanged

Validation

• bash -n modules/network-optimize.sh
• shellcheck --severity=warning modules/network-optimize.sh
• shellcheck -x --severity=error linux_setup.sh modules/.sh tools/.sh tests/*.sh
• bash tests/test-network-optimize.sh
• bash tests/test-network-optimize-entry.sh
• bash tests/run.sh
• git diff --check