Eclair: Allow only confirmed splicing inputs and enhance forced termination

Eclair, ACINQ's Lightning Network node implementation, released v0.14.6 on October 27, restricting channel splicing to accept only confirmed transaction inputs provided by the peer node and hardening force-close handling for channels with unconfirmed splice transactions. The update applies to Bitcoin (BTC) Lightning Network channel funding adjustments and unsettled payment processing, and ACINQ has recommended that node operators upgrade. According to the release notes, some of the patched issues could have been exploited by malicious nodes, with fixes covering splicing input restrictions and fund-handling logic during force closes. Splicing allows adding or removing Bitcoin funds from a channel without closing it, making the security of this process critical to channel liquidity management. The release matters because unconfirmed splicing inputs and force-close edge cases are potential attack vectors for funds stuck in Lightning channels. Watch for adoption rates among node operators and whether further splicing-related vulnerabilities surface as the feature matures.