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.

biome.json

@@ -7,7 +7,14 @@
 	},
 	"files": {
 		"ignoreUnknown": false,
-		"includes": ["**", "!dist", "!ui/dist", "!**/node_modules", "!exporter"]
+		"includes": [
+			"**",
+			"!**/dist",
+			"!**/node_modules",
+			"!exporter",
+			"!ui/storybook-static",
+			"!ui/screenshots"
+		]
 	},
 	"formatter": {
 		"enabled": true,