docs: Add skills for OISY Wallet Signer

[AntonioVentilii]

Adding the SKILL.md file for the repo OISY Wallet Signer.

Credits: @artkorotkikh-dfinity

[JoshDFN]

Looks good — solid skill file. Note: the dependencies field lists npm packages but should list skill IDs (other skills in this repo). The npm deps belong in a requires frontmatter field instead. Also category: Wallet isn't in the current category list — may need to pick an existing one or we add it. Minor stuff, happy to merge once you take it out of draft.

[JoshDFN]

Hey Antonio — approved! One small thing: the dependencies field in frontmatter is for referencing other skill IDs in this repo (e.g., [icrc-ledger, wallet]), not npm packages. Your npm deps should go in a requires field instead:

dependencies: []
requires: [@dfinity/utils >= 4.1, @dfinity/zod-schemas >= 3, @icp-sdk/canisters >= 3.2, @icp-sdk/core >= 5, zod >= 4]

Ready to merge once you fix that and take it out of draft!

[sbpublic]

so, here my review, part I

[marc0olo]

#55 just merged and removed the README skills table (among other changes). This PR now has a merge conflict in README.md.

The README no longer lists individual skills — you can drop your README changes entirely. Only skills/oisy-wallet-signer/SKILL.md needs to be in the PR.

Also, the frontmatter format changed. The new format is:

---
name: oisy-wallet-signer
description: "..."
license: Apache-2.0
compatibility: "icp-cli >= 0.1.0"
metadata:
  title: "OISY Wallet Signer"
  category: Wallet
---

Removed fields: version, endpoints, status, dependencies, requires, tags. See CONTRIBUTING.md for the full reference.

Please rebase on main and update accordingly.

[marc0olo]

now we are good to go, thanks a lot @AntonioVentilii :)