12e6b2d7c9
- Added support for keypad navigation keys (0-9, decimal) in Kitty keyboard protocol parsing. - Implemented keypad-to-navigation key mapping function that translates keypad codepoints to standard navigation keys (arrows, home, end, page up/down, insert, delete). - Enhanced ParsedKittySequence struct with text_codepoint field to track text representation of keys. - Improved key matching logic to apply keypad navigation mapping when text codepoint is absent. - Extended parse_csi_u parser to extract and validate text codepoints from Kitty protocol sequences.