refactor: move SKILL.md into skills/xrpl-cli/ directory

Prevents npx skills from copying the entire repo when installing.
The skills/ directory convention ensures only the skill files are
installed.

Author: k4m4

AGENTS.md

@@ -6,7 +6,7 @@ description: AI coding agent guide for the xrpl-cli codebase
 # AGENTS.md
 
 Instructions for AI coding agents working on the `xrpl-cli` codebase.
-For using the CLI as a tool, see [SKILL.md](SKILL.md).
+For using the CLI as a tool, see [SKILL.md](skills/xrpl-cli/SKILL.md).
 
 ## Project Overview
 

README.md

@@ -5,7 +5,7 @@
 [![CI][ci-badge]][ci-link]
 [![License][license-badge]][license-link]
 
-A Swiss Army knife for interacting with the XRP Ledger from the command line. Built for both humans and [AI agents](SKILL.md).
+A Swiss Army knife for interacting with the XRP Ledger from the command line. Built for both humans and [AI agents](skills/xrpl-cli/SKILL.md).
 
 `xrpl-cli` wraps [xrpl.js](https://js.xrpl.org/) and exposes the full breadth of XRPL functionality through a flat, composable command interface — inspired by Foundry's [`cast`](https://www.getfoundry.sh/reference/cast/cast) for EVM chains.
 
@@ -301,7 +301,7 @@ npx skills add commonprefix/xrpl-cli
 
 | File | Description |
 |------|-------------|
-| [SKILL.md](SKILL.md) | Agent skill — how to use `xrpl-cli` as a tool |
+| [SKILL.md](skills/xrpl-cli/SKILL.md) | Agent skill — how to use `xrpl-cli` as a tool |
 | [AGENTS.md](AGENTS.md) | Coding agent guide — how to work on the codebase |
 
 ## Releasing

SKILL.md skills/xrpl-cli/SKILL.mdSKILL.md renamed to skills/xrpl-cli/SKILL.md

@@ -6,7 +6,7 @@ description: CLI tool for querying, transacting, and managing accounts on the XR
 # SKILL.md
 
 Instructions for AI agents that want to **use** `xrpl-cli` as a tool.
-For contributing to the codebase, see [AGENTS.md](AGENTS.md).
+For contributing to the codebase, see [AGENTS.md](../../AGENTS.md).
 
 ## Overview