* UOp.param accepts single sint as shape (int,)
Change UOp.param signature from shape:tuple[sint, ...]|None to shape:tuple[sint, ...]|sint|None.
A single sint means 1D shape (sint,). Update all callers from (n,) to n syntax.
No param_from_shape — multi-dim shapes stay as tuples.
* use single int syntax in hcq2 copy_with_kernel
* cstyle: scalar ALU index fix, serve: preserve_thinking, test: fix Handler import
- cstyle.py: return scalar directly when ALU buffer has 1 element
- cli.py: add preserve_thinking param to FallbackTemplate.render
- serve.py: pass preserve_thinking=True when rendering chat completions
- test_llm_server.py: fix import to use Handler from llm.serve
* real fix
geohot