v2.7.1

Bug Fixes

• Richmat BT6500: Restore controls for BedTech BT6500 beds auto-detected as Richmat WiLinke (#194)

Documentation

• Update 9 protocol docs to match v2.7.0 implementations (richmat, keeson, jensen, svane, leggett-platt, jiecang, suta, motosleep, solace)
• Update README, SUPPORTED_ACTUATORS, CONFIGURATION, and AGENTS.md with new bed types and corrected feature descriptions