Added `window::stop()` (sets GLFW close flag). Updated
signal/timer handlers and Q key check to call it instead of
using a separate `quit` bool in main().
This encapsulates the close state in the window class (no
more external flag + manual checks). The render loop is now
simpler.
(The process_signals lambda and ASIO duration timer are
retained.)
Extract GLFW window management into a dedicated cbt::window
class (new files in cbt/). The opengl::context now only
handles GLAD setup and context activation (no more window
creation or GLFW init/terminate).
Updated main loop in cuber.cpp, CMakeLists.txt (to build
the new source), and AGENTS.md (docs + source layout).
Addresses the design note in context.cpp about mixing
concerns.
- Replace window class with cbt::opengl::context
- Add buffer resource (VBO, EBO, UBO, SSBO) with move semantics
- Add texture resource with format/type enums and filtering
- Add descriptor_set for Vulkan-style resource binding
- All resources use RAII with proper cleanup
- Add cbt::window class in cbt/ directory with RAII lifecycle
- Add setup_opengl and info_opengl for glad init and GL info
- Add Q key to quit the application
- Update CMakeLists.txt with glfw3 and glad dependencies
- Update AGENTS.md with snake_case naming and shell conventions
portersky