Move container resource defaults into their own sub-namespace for future extensibility: cameleer.server.runtime.container.memorylimit → CAMELEER_SERVER_RUNTIME_CONTAINER_MEMORYLIMIT cameleer.server.runtime.container.cpushares → CAMELEER_SERVER_RUNTIME_CONTAINER_CPUSHARES Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>