feat: integrate TUI module and apply professional refactoring

CHANGELOG.md

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+# Changelog
+
+All notable changes to the ASCII 3D Renderer project will be documented in this file.
+
+## [3.0.0] - 2026-04-16
+
+### Added
+
+- **Interactive TUI**: A fully non-blocking TTY mode using `termios.h`, eliminating the requirement to restart the command line tool to view varying text or configuration.
+- **Dynamic Text Buffering**: Real-time alphanumeric typing support overlaying the 3D rotating model.
+- **Keybinding Overlay**: Rendered a helpful overlay bar detailing available interaction toggles at the bottom of the viewport matrix (`space` to pause/play, `c` to toggle color mappings, `w/s` to manage rotation speed).
+- **Core TUI Module**: Explicit `tui.h` and `tui.c` segregation strictly following clean engineering isolation paradigms.
+
+### Changed
+
+- **Removed Boilerplate Commentary**: Stripped all heavy `Doxygen` noise that obscured the raw logic of the C11 source codes. Instead, injected strict, professional, direct inline comments focusing on low-level 'why' rather than regurgitating standard boilerplate.
+- **Makefile Restructure**: Abstracted the build targets for greater directness and improved comment clarity.
+
+### Fixed
+
+- Stabilized terminal behavior: enforced cleanup handlers to restore standard canonical reading and buffer modes gracefully upon process interrupt or `quit` signaling, minimizing occurrences of a broken terminal interface.