refactor(cua): move native provider into experimental

packages/experimental/README.md

@@ -66,6 +66,7 @@ Promotion requires a named product role, documented public behavior and limitati
 | [`claude-code-mods`](claude-code-mods/README.md) | Run Claude Code mods as plugins: their hook chains on harness extension points and a band above the prompt | `ctx.claudeCodeMods` |
 | [`client-ui-claude-code-mods`](client-ui-claude-code-mods/README.md) | The Web band that draws a mod's tree above the prompt and sends button clicks back | — |
 | [`ptc-runtime-python`](ptc-runtime-python/README.md) | CPython subprocess backend for the PTC execution seam | `ctx.ptcRuntime` |
+| [`cua`](cua/README.md) | Native macOS application and window operations | `ctx.computerUse` |
 | [`computer-use-cua-driver-mcp`](computer-use-cua-driver-mcp/README.md) | Use an installed Cua Driver through MCP | `ctx.computerUse` |
 | [`computer-use-cua-driver-native`](computer-use-cua-driver-native/README.md) | Embed the Cua Driver native npm runtime | `ctx.computerUse` |
 | [`browser-use-playwright-mcp`](browser-use-playwright-mcp/README.md) | Playwright browser tools over MCP | `ctx.browserUse` |