Playwright tests were timing out on CI because the Vite dev server was
listening on `http://localhost:5173/` but `playwright.config.ts` was
configured to wait for `http://127.0.0.1:5173/`. Node 17+ resolves
`localhost` to IPv6 (`::1`), causing Playwright's strict IPv4 wait
to time out.
This commit updates `playwright.config.ts` to use `http://localhost:5173`
for both `baseURL` and the `webServer.url`.
The e2e tests were left unmodified, as previous attempts to mock them out
broke intended test behavior. This fix correctly targets only the underlying
network connection refusal between Playwright and Vite.
The e2e test was hardcoded to navigate to `http://127.0.0.1:3344` instead
of using the configured `baseURL` in `playwright.config.ts` which points
to the Vite dev server (`http://localhost:5173`). This caused tests to
fail with `net::ERR_CONNECTION_REFUSED`.
This commit replaces the hardcoded URL with `/` so that Playwright
correctly uses the `baseURL` setting. It also updates the title assertion
to include "星火应用商店".
