DeFeedback Live 0.4.0

Public Apple Silicon engineering preview.\n\nWhat changed:\n- Removed the fixed ten-lane application limit.\n- Lane capacity now follows every input and output reported by the selected Core Audio device.\n- Add Lane selects the next exclusive unassigned input/output pair and reports when device capacity is exhausted.\n- Saved configurations are no longer truncated at ten lanes.\n- Added an in-app About / Safety notice and packaged licence, disclaimer, and source information.\n- Released as open-source software under GNU AGPLv3.\n\nImportant:\n- This project is independent and is not affiliated with, sponsored by, approved by, or endorsed by Alpha Labs LLC.\n- Alpha Labs De-Feedback is not included and must be installed and licensed separately.\n- Engineering preview supplied without warranty. Use entirely at your own risk. Live feedback and routing mistakes can cause dangerous sound levels, hearing injury, or equipment damage. Begin muted, verify every route, and keep an independent hardware or console mute.\n- This build is ad-hoc signed but not Apple-notarized; macOS may require manual approval in Privacy & Security.\n- More available lanes does not guarantee real-time stability. Qualify the intended lane count, interface, buffer, and Mac before live use.\n\nSHA-256: 135c5e11fad4509fbcdd2430a3cff43a7992d69c962eeb73308477efe66961ec