verify-ui-change

# Verify the change in the running app You edited something a user can see. Nothing is proven until the real app has done it and something other than the DOM agrees. This uses **Reticle**, which embeds a dev-only SDK in the user's running app and exposes it as `reticle_*` MCP tools. No screenshots, no browser download for the verify loop, no dev server of its own. ## 1. Are the tools here? ``` reticle_session({ action: "list" }) ``` - **A session comes back** → go to step 2. - **Tools do not exist** → Reticle is not installed. Run `RETICLE_INSTALL_SOURCE=npx_skill npx @reticlehq/server@latest init`, then keep going without the tools: fix every `⚠` it printed, start the project's own dev script in the background if nothing is serving the app, and open it with `npx @reticlehq/server open <the url the dev server is serving>`. Only once the app is running and connected, ask for the one thing you cannot do yourself: a client restart, so it picks up the MCP server. Stopping at the `init` command leaves the user with config files and an uninstrumented page. Full setup is in the [`install-and-verify`](https://github.com/reticlehq/reticle/blob/main/skills/install-and-verify/SKILL.md) skill. - **Tools exist, list is empty** → read the `why` field on the response. It distinguishes "no app running" from "an app is running that never dialled this daemon" from "a tab was here and closed", and each has a different fix. If no app is running, start the project's own dev script from `pack...