2.1 Functional Requirements

2.1.1 Terminal Emulation

• Support VT100 escape sequence subset
• Support ANSI color codes (16 colors minimum)
• Handle cursor movement (absolute and relative)
• Support cursor visibility toggling
• Handle screen clearing (full and partial)
• Support scroll regions
• Handle line wrapping
• Support insert/delete character mode
• Support insert/delete line mode

2.1.2 Text Buffer

• Maintain scrollback buffer (configurable size, default 1000 lines)
• Support buffer searching
• Efficient buffer updates (minimize memory copies)
• Buffer serialization for save/load

2.1.3 Cursor Management

• Cursor position tracking (row, column)
• Cursor shape configuration (block, underline, beam)
• Cursor blink timing (configurable)
• Cursor visibility state