cs-prices: full ByMykel catalog, every config, daily multi-source prices, item pages with working charts

- cs.skins catalog (weapons, knives, gloves, stickers, cases, agents, charms, …) refreshed weekly
- every market config: wears in float range, StatTrak, Souvenir, Doppler/Gamma phases
- cs.daily_prices (one row per config/stream/day, idempotent) from Skinport, Steam, CSFloat, Buff163
- cs.price_windows for 24h/7d/30d/90d sale aggregates, cs.fx_rates (ECB)
- scripts/cs-prices.ts daily|catalog|prices; legacy ingest fixed for the new unique index
- skin browser + /projects/cs-prices/[slug] with variant/wear/phase switcher and real charts
- charts show points for short histories and pad sparse time axes

src/routes/projects/cs-prices/[slug]/+page.server.ts

@@ -0,0 +1,23 @@
+import { error } from '@sveltejs/kit';
+import { loadSeries, loadSkin, pickConfig, streams } from '#lib/server/cs-prices.js';
+import type { PageServerLoad } from './$types';
+
+// One skin (or sticker, case, agent, …) with every market config it has: wear, StatTrak,
+// Souvenir and Doppler phase. The selected config comes from ?v=&wear=&phase= so every config
+// has its own URL; its full daily history (EUR) is loaded here and the range is picked client-side.
+export const load: PageServerLoad = async ({ params, url }) => {
+	const found = await loadSkin(params.slug);
+	if (!found) error(404, 'Not Found');
+	const config = pickConfig(found.configs, url.searchParams);
+	const [streamList, history] = await Promise.all([
+		streams(),
+		config ? loadSeries(config, null) : Promise.resolve(null)
+	]);
+	return {
+		skin: found.skin,
+		configs: found.configs,
+		selected: config?.id ?? null,
+		streams: streamList,
+		history
+	};
+};