Feat/delta buildCancelDeltaOrder util

[andriy-shymkiv]

Adds buildCancelDeltaOrder in constructCancelDeltaOrder factory

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Note

Low Risk
Additive API on the cancel path with a small internal refactor; existing cancelDeltaOrders behavior is unchanged aside from sharing the new build step.

Overview
Adds buildCancelDeltaOrder on constructCancelDeltaOrder / sdk.delta.*, returning EIP-712 SignableCancelDeltaOrderData (Portikus domain + OrderCancellations with orderIds) after resolving the ParaswapDelta contract. signCancelDeltaOrderRequest now builds typed data through this helper before calling signTypedDataCall, so apps can inspect or sign cancel payloads outside the bundled signer.

Exports the BuildCancelDeltaOrder type from the package entrypoint, documents the build → sign → post cancel flow in CLAUDE.md, bumps @velora-dex/sdk to 10.1.0, and adds unit coverage plus an assertion that constructAllDeltaOrdersHandlers exposes buildCancelDeltaOrder. README.md changes are mostly formatting; command examples use pnpm instead of yarn.

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[github-actions]

size-limit report 📦

Path	Size
dist/sdk.cjs.production.min.js	16.66 KB (0%)
dist/sdk.esm.js	16.91 KB (0%)

[Copilot]

Pull request overview

Adds a new Delta cancel utility that lets consumers build (but not sign) the EIP-712 typed data needed for batch Delta order cancellations, and refactors existing cancel signing to reuse that builder. Documentation files are also reformatted/updated to describe the overall cancel pipeline.

Changes:

• Add buildCancelDeltaOrder to the Delta cancel factory and have signCancelDeltaOrderRequest delegate to it.
• Export the BuildCancelDeltaOrder type from the package entrypoint.
• Extend tests and update README/CLAUDE docs to reflect the cancel/build/sign flow and formatting.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/delta.test.ts	Adds coverage for the new buildCancelDeltaOrder output and SDK wiring.
src/methods/delta/cancelDeltaOrder.ts	Introduces buildCancelDeltaOrder and refactors signing to call it.
src/index.ts	Exports the new BuildCancelDeltaOrder public type.
README.md	Reformats examples and documents the build/sign/post pipeline (but currently has a couple example typos).
CLAUDE.md	Updates repo commands (pnpm) and architecture docs + formatting.

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