Add a busy-wait sleep on a monotonic clock and re-export String,
format!, and Duration from the library. The example animates a
progress bar with a spinner and logs each step in a Vec<String>.
Co-Authored-By: qwen (lmstudio/qwen3.8-27b@q3_k_xl): wrote example
Add an alloc-backed common library with direct platform I/O.
Build a host attribute macro for async entry points and keep runtime
boilerplate outside application code. Compile the library, macro, and
example directly with rustc through CMake.
Co-Authored-By: luna (openrouter/openai/gpt-5.6-luna): runtime work
portersky