- firstForwardedValue: strings.Split always returns at least one element - shouldRunBackupPoll: remaining is always >= 1 by math - convertContainerDiskInfo: lowerLabel is never empty for non-rootfs All three functions now at 100% coverage.
Move 13 related container parsing functions from monitor.go (9359 lines) to container_parsing.go (451 lines). Reduces monitor.go by 427 lines. Functions extracted: - ensureContainerRootDiskEntry - convertContainerDiskInfo - sanitizeRootFSDevice - parseContainerRawIPs - collectIPsFromInterface - sanitizeGuestAddressStrings - dedupeStringsPreserveOrder - containerNetworkDetails struct - containerMountMetadata struct - parseContainerConfigNetworks - parseContainerMountMetadata - mergeContainerNetworkInterface - extractContainerRootDeviceFromConfig
