feat(ui): three-page console SPA on @unom/ui + the kit's react helpers

Overview (exporter health, Playnite version, counts, sync, live SSE activity,
and a first-run panel that names the exact ingest path the .pext writes to),
Library (covers + per-game include toggles + why-not-synced), Settings
(filters, art delivery, sync cadence, paths).

Data layer is AtomHttpApi atoms derived from the shared contract; the whole
thing runs with zero host against an in-browser mock transport with four
scenarios, and Storybook renders the real pages on the same fixtures. CI now
asserts the production bundle carries no fixture strings.

Also: CI rebuilt for the workspace layout (one root install, per-package
typecheck, publish from plugin/ on a v* tag) with the exporter job and
`publish: needs [build, exporter]` unchanged; README rewritten around the three
workspaces, with the ingest inbox explained as the load-bearing mechanism it is.

ui/package.json

@@ -2,14 +2,15 @@
 	"name": "punktfunk-plugin-playnite-ui",
 	"private": true,
 	"type": "module",
-	"description": "The Playnite plugin SPA — Punktfunk console polish (@unom/ui + @unom/app-ui), an Effect-native data layer derived from the shared HttpApi contract, and a zero-host mock dev loop. Builds into plugin/dist/ui.",
+	"description": "The Playnite plugin SPA \u2014 Punktfunk console polish (@unom/ui + @unom/app-ui), an Effect-native data layer derived from the shared HttpApi contract, and a zero-host mock dev loop. Builds into plugin/dist/ui.",
 	"scripts": {
 		"dev": "vite",
 		"dev:live": "VITE_API_MODE=live vite",
 		"build": "vite build",
 		"typecheck": "tsc --noEmit",
 		"storybook": "storybook dev -p 6014",
-		"build-storybook": "storybook build"
+		"build-storybook": "storybook build",
+		"screenshots": "node tools/screenshots.mjs"
 	},
 	"dependencies": {
 		"@effect/atom-react": "4.0.0-beta.99",
@@ -32,6 +33,7 @@
 		"@types/react": "^19.2.17",
 		"@types/react-dom": "^19.2.3",
 		"@vitejs/plugin-react": "^5.2.0",
+		"playwright": "^1.61.1",
 		"storybook": "^10.4.6",
 		"tailwindcss": "^4.3.2",
 		"tw-animate-css": "^1.4.0",