docs: add Autohand Code MCP setup

[igorcosta]

What changed

Adds Autohand Code to the README's MCP client setup, using XcodeBuildMCP's documented on-demand command: npx -y xcodebuildmcp@latest mcp.

The note also includes the project-scoped option and links to the current Autohand Code CLI documentation.

Verification

• Checked the command against the current Autohand Code MCP CLI
• Ran git diff --check

This is a documentation-only change.

[sentry]

Bug: The README.md documents an invalid --scope project flag for the autohand mcp add command, which will cause the setup instructions to fail.
_{Severity: MEDIUM}

Suggested Fix

Verify the correct command and flags for adding a project-scoped MCP server with the autohand CLI. Update the README.md to reflect the correct syntax, which may involve using a different flag like --transport http or a different command structure entirely. Remove the reference to the unsupported --scope project flag.

Prompt for AI Agent

Review the code at the location below. A potential bug has been identified by an AI
agent. Verify if this is a real issue. If it is, propose a fix; if not, explain why it's
not valid.

Location: README.md#L42

Potential issue: The documentation in `README.md` instructs users to add a `--scope
project` flag to the `autohand mcp add` command to keep server configuration within the
current project. However, this flag appears to be invalid according to the `autohand`
CLI's documentation. Users following these instructions will encounter a command-line
error, preventing them from successfully setting up the tool as described. This makes
the provided setup instructions incorrect and unusable.

_{Did we get this right? 👍 / 👎 to inform future reviews.}

[cameroncooke]

@igorcosta thanks for this, please can you add the client install instructions to the official docs site, the README.md deliberately doesn't given examples for common clients otherwise it would be too long. https://github.com/getsentry/xcodebuildmcp.com