* 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
* start work on target
* add test
* update actions to use DEV
* update docs
* update readmes
* tests need that too
* update example
* update tests (comments)
* fix that test
* ruff
* mypy
* oops
* remove getenvs
* don't add Target yet
* and the test
* lint
* and docs
* more stuff
* assert
* few more fixes
* test assert