ui/phase-21: sciences CRUD list, designer, and production-picker integration

Lights up the player-defined sciences feature: a table view with sort
and filter, a designer with four percent inputs and a strict
sum-equals-100 gate, and a Research-sub-row integration so the
planet production picker lists the user's sciences alongside the
four tech buttons. Phase 21 decisions are baked back into ui/PLAN.md
(no UpdateScience on the wire — write-once via createScience +
removeScience; percentages instead of fractions; sciences live under
the existing Research segment).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ui/frontend/src/routes/games/[id]/+layout.svelte

@@ -173,6 +173,7 @@ fresh.
 	const localShipClass = $derived(
 		renderedReport.report?.localShipClass ?? [],
 	);
+	const localScience = $derived(renderedReport.report?.localScience ?? []);
 	const inspectorPlanets = $derived(renderedReport.report?.planets ?? []);
 	const inspectorRoutes = $derived(renderedReport.report?.routes ?? []);
 	const inspectorMapWidth = $derived(renderedReport.report?.mapWidth ?? 1);
@@ -341,6 +342,7 @@ fresh.
 	<PlanetSheet
 		planet={selectedPlanet}
 		{localShipClass}
+		{localScience}
 		routes={inspectorRoutes}
 		planets={inspectorPlanets}
 		mapWidth={inspectorMapWidth}