rename the base rotation (deterministic/random hadamard) directory name.

[lkk12014402]

Description

Directory	What the name implies	What the directory actually contains
quarot/	the QuaRot algorithm	❌ not QuaRot — it is per-Linear Hadamard (registered as "hadamard")
spinquant/	only SpinQuant	both SpinQuant and QuaRot (QuaRot = the non-trainable variant of SpinQuant)

After the rename

Directory	Contents	Registered name
hadamard/	per-Linear Hadamard rotation	"hadamard/random_hadamard"
spinquant/	shared R1–R4 implementation for SpinQuant (trainable) + QuaRot (non-trainable)	"spinquant" / "quarot"

The directory name hadamard/ now matches its registered name "hadamard" and
is no longer misleading.

[lkk12014402]

@n1ck-guo please help review~

[n1ck-guo]

LGTM @wenhuach21 any comment?

[wenhuach21]

looks good to me.
1 From an algorithm perspective, however, Quarot is more accurate regardless of whether rotation is fused or not.

2 The rotation documentation should also be refined. It contains too much low-level detail that most users won't understand. It would be better to keep the main documentation concise and move the implementation details to a separate section (or collapse them under a "Details" section).

[lkk12014402]

looks good to me. 1 From an algorithm perspective, however, Quarot is more accurate regardless of whether rotation is fused or not.

2 The rotation documentation should also be refined. It contains too much low-level detail that most users won't understand. It would be better to keep the main documentation concise and move the implementation details to a separate section (or collapse them under a "Details" section).

okay

[lkk12014402]

/azp run Unit-Test-CUDA-AutoRound

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[chensuyue]

/azp run Unit-Test-CUDA-AutoRound

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).