implement crew teams page with shared parties list

src/routes/(app)/crew/teams/+page.svelte

@@ -1,9 +1,16 @@
 <svelte:options runes={true} />
 
 <script lang="ts">
+	import { onDestroy } from 'svelte'
+	import { createInfiniteQuery } from '@tanstack/svelte-query'
 	import { crewStore } from '$lib/stores/crew.store.svelte'
+	import { crewQueries } from '$lib/api/queries/crew.queries'
+	import { useInfiniteLoader } from '$lib/stores/loaderState.svelte'
 	import CrewHeader from '$lib/components/crew/CrewHeader.svelte'
 	import CrewTabs from '$lib/components/crew/CrewTabs.svelte'
+	import ExploreGrid from '$lib/components/explore/ExploreGrid.svelte'
+	import Icon from '$lib/components/Icon.svelte'
+	import Button from '$lib/components/ui/Button.svelte'
 	import type { PageData } from './$types'
 
 	interface Props {
@@ -11,6 +18,30 @@
 	}
 
 	let { data }: Props = $props()
+
+	let sentinelEl = $state<HTMLElement>()
+
+	// Query for shared parties
+	const sharedPartiesQuery = createInfiniteQuery(() => ({
+		...crewQueries.sharedParties(),
+		enabled: crewStore.isInCrew
+	}))
+
+	// State-gated infinite scroll
+	const loader = useInfiniteLoader(
+		() => sharedPartiesQuery,
+		() => sentinelEl,
+		{ rootMargin: '300px' }
+	)
+
+	// Cleanup on destroy
+	onDestroy(() => loader.destroy())
+
+	const items = $derived(
+		sharedPartiesQuery.data?.pages.flatMap((page) => page.parties) ?? []
+	)
+
+	const isEmpty = $derived(!sharedPartiesQuery.isLoading && items.length === 0)
 </script>
 
 <svelte:head>
@@ -27,8 +58,53 @@
 
 		<CrewTabs userElement={data.currentUser?.element} />
 
-		<div class="empty-state">
-			<p>Coming soon</p>
+		<div class="content">
+			{#if !crewStore.isInCrew}
+				<div class="empty-state">
+					<Icon name="users" size={32} />
+					<p>You're not in a crew</p>
+				</div>
+			{:else if sharedPartiesQuery.isLoading}
+				<div class="loading-state">
+					<Icon name="loader-2" size={32} class="spin" />
+					<p>Loading shared teams...</p>
+				</div>
+			{:else if sharedPartiesQuery.isError}
+				<div class="error-state">
+					<Icon name="alert-circle" size={32} />
+					<p>Failed to load teams: {sharedPartiesQuery.error?.message || 'Unknown error'}</p>
+					<Button size="small" onclick={() => sharedPartiesQuery.refetch()}>Retry</Button>
+				</div>
+			{:else if isEmpty}
+				<div class="empty-state">
+					<Icon name="share-2" size={32} />
+					<p>No teams have been shared with your crew yet</p>
+					<span class="hint">Crew members can share their teams from the team settings</span>
+				</div>
+			{:else}
+				<div class="teams-grid">
+					<ExploreGrid {items} />
+
+					<div
+						class="load-more-sentinel"
+						bind:this={sentinelEl}
+						class:hidden={!sharedPartiesQuery.hasNextPage}
+					></div>
+
+					{#if sharedPartiesQuery.isFetchingNextPage}
+						<div class="loading-more">
+							<Icon name="loader-2" size={20} class="spin" />
+							<span>Loading more...</span>
+						</div>
+					{/if}
+
+					{#if !sharedPartiesQuery.hasNextPage && items.length > 0}
+						<div class="end-message">
+							<p>You've seen all shared teams</p>
+						</div>
+					{/if}
+				</div>
+			{/if}
 		</div>
 	</div>
 </div>
@@ -52,17 +128,78 @@
 		overflow: hidden;
 	}
 
-	.empty-state {
+	.content {
+		padding: spacing.$unit-2x;
+	}
+
+	.teams-grid {
+		display: flex;
+		flex-direction: column;
+		gap: spacing.$unit-2x;
+	}
+
+	.empty-state,
+	.loading-state,
+	.error-state {
 		display: flex;
 		flex-direction: column;
 		align-items: center;
 		justify-content: center;
-		padding: spacing.$unit-4x;
+		padding: spacing.$unit-6x spacing.$unit-4x;
 		color: var(--text-secondary);
+		text-align: center;
+		gap: spacing.$unit;
+
+		p {
+			margin: 0;
+			font-size: typography.$font-regular;
+		}
+
+		.hint {
+			font-size: typography.$font-small;
+			color: var(--text-tertiary);
+		}
+	}
+
+	.loading-more {
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		gap: spacing.$unit;
+		padding: spacing.$unit-2x;
+		color: var(--text-secondary);
+		font-size: typography.$font-small;
+	}
+
+	.end-message {
+		text-align: center;
+		padding: spacing.$unit-2x;
+		color: var(--text-tertiary);
 		font-size: typography.$font-small;
 
 		p {
 			margin: 0;
 		}
 	}
+
+	.load-more-sentinel {
+		height: 1px;
+
+		&.hidden {
+			display: none;
+		}
+	}
+
+	:global(.spin) {
+		animation: spin 1s linear infinite;
+	}
+
+	@keyframes spin {
+		from {
+			transform: rotate(0deg);
+		}
+		to {
+			transform: rotate(360deg);
+		}
+	}
 </style>