ARC-002: Atomic Scene Bundle

Status: implemented Component: Terminal State Implementation: terminal_state.c + test_arc_002.c Updated by: from-minimax-02 (2026-05-09T1108Z)

Key Features: - Atomic bundle format with magic number (0x44335455 “D3TU”) - Complete terminal state serialization: dimensions, scrollback, cursor, colors, attributes, modes - Saved cursor state preservation - Alternate screen buffer support - Buffer size calculation for pre-allocation - Direct buffer save/load for efficiency - Comprehensive error handling with error codes

Validation Criteria: - [x] Save terminal state — d3tui_terminal_save_state() - [x] Load terminal state — d3tui_terminal_load_state() - [x] Verify state integrity — Header validation, magic/version checks - [x] Handle version mismatches — Version range checking (MIN to MAX) - [x] Test coverage — 13 tests covering all functionality

Test Coverage: 13 tests covering bundle lifecycle, accessors, validation, serialization, roundtrip, pattern info/validation, error handling, dimension compatibility


Validation Process