fix: Resolve avatar display issues on chat and player pages

Chat page:
- Fix player lookup using player_name instead of player_id to avoid
  JavaScript number precision loss with 64-bit Steam IDs
- Update player filter dropdown to use names instead of IDs

Player page (Teammates):
- Construct full avatar URLs from hash when backend returns hash format
- Handle both full URLs and hashes with startsWith check

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/routes/match/[id]/chat/+page.svelte

@@ -18,7 +18,7 @@
 	let searchQuery = $state('');
 	let showTeamChat = $state(true);
 	let showAllChat = $state(true);
-	let selectedPlayer = $state<number | null>(null);
+	let selectedPlayer = $state<string | null>(null);
 
 	// Check if text likely needs translation (contains non-ASCII or Cyrillic characters)
 	const mightNeedTranslation = (text: string): boolean => {
@@ -34,16 +34,15 @@
 		window.open(translateUrl, '_blank', 'width=800,height=600,noopener,noreferrer');
 	};
 
-	// Get unique players who sent messages
+	// Get unique players who sent messages (using player_name to avoid precision loss with player_id)
 	const messagePlayers = $derived(
 		chatData
-			? Array.from(new Set(chatData.messages.map((m) => m.player_id)))
-					.filter((playerId): playerId is number => playerId !== undefined)
-					.map((playerId) => {
-						const player = match.players?.find((p) => p.id === String(playerId));
+			? Array.from(new Set(chatData.messages.map((m) => m.player_name || `Player ${m.player_id}`)))
+					.filter((name): name is string => !!name)
+					.map((name) => {
+						const player = match.players?.find((p) => p.name === name);
 						return {
-							id: playerId,
-							name: player?.name || `Player ${playerId}`,
+							name,
 							team_id: player?.team_id || 0
 						};
 					})
@@ -56,7 +55,8 @@
 			? chatData.messages.filter((msg) => {
 					if (!showTeamChat && !msg.all_chat) return false;
 					if (!showAllChat && msg.all_chat) return false;
-					if (selectedPlayer !== null && msg.player_id !== selectedPlayer) return false;
+					const msgPlayerName = msg.player_name || `Player ${msg.player_id}`;
+					if (selectedPlayer !== null && msgPlayerName !== selectedPlayer) return false;
 					if (searchQuery && !msg.message.toLowerCase().includes(searchQuery.toLowerCase())) {
 						return false;
 					}
@@ -204,7 +204,7 @@
 					>
 						<option value={null}>All Players</option>
 						{#each messagePlayers as player}
-							<option value={player.id}>{player.name}</option>
+							<option value={player.name}>{player.name}</option>
 						{/each}
 					</select>
 
@@ -256,9 +256,8 @@
 					<!-- Messages -->
 					<div class="divide-y divide-white/5">
 						{#each messagesByRound[round] as message}
-							{@const player = match.players?.find((p) => p.id === String(message.player_id))}
-							{@const playerName =
-								message.player_name || player?.name || `Player ${message.player_id}`}
+							{@const playerName = message.player_name || `Player ${message.player_id}`}
+							{@const player = match.players?.find((p) => p.name === playerName)}
 							{@const playerAvatar = player?.avatar}
 							{@const teamId = player?.team_id || 0}
 							<div class="p-4 transition-colors hover:bg-white/5">

src/routes/player/[id]/+page.svelte

@@ -1125,6 +1125,11 @@
 							<div class="space-y-3">
 								{#each metaStats.best_mates.slice(0, 5) as teammate}
 									{@const winRatePercent = (teammate.win_rate ?? 0) * 100}
+									{@const avatarUrl = teammate.player.avatar
+										? teammate.player.avatar.startsWith('http')
+											? teammate.player.avatar
+											: `https://avatars.steamstatic.com/${teammate.player.avatar}_full.jpg`
+										: null}
 									<a
 										href="/player/{teammate.player.steamid64}"
 										class="group flex items-center gap-3 rounded-lg bg-white/5 p-3 transition-all hover:bg-white/10"
@@ -1132,9 +1137,9 @@
 										<div
 											class="relative flex h-10 w-10 shrink-0 items-center justify-center rounded-full border border-white/10 bg-void"
 										>
-											{#if teammate.player.avatar}
+											{#if avatarUrl}
 												<img
-													src={teammate.player.avatar}
+													src={avatarUrl}
 													alt={teammate.player.name || 'Player'}
 													class="h-full w-full rounded-full object-cover"
 													onerror={(e) => {
@@ -1190,6 +1195,11 @@
 							<div class="space-y-3">
 								{#each metaStats.most_mates.slice(0, 5) as teammate}
 									{@const winRatePercent = (teammate.win_rate ?? 0) * 100}
+									{@const avatarUrl = teammate.player.avatar
+										? teammate.player.avatar.startsWith('http')
+											? teammate.player.avatar
+											: `https://avatars.steamstatic.com/${teammate.player.avatar}_full.jpg`
+										: null}
 									<a
 										href="/player/{teammate.player.steamid64}"
 										class="group flex items-center gap-3 rounded-lg bg-white/5 p-3 transition-all hover:bg-white/10"
@@ -1197,9 +1207,9 @@
 										<div
 											class="relative flex h-10 w-10 shrink-0 items-center justify-center rounded-full border border-white/10 bg-void"
 										>
-											{#if teammate.player.avatar}
+											{#if avatarUrl}
 												<img
-													src={teammate.player.avatar}
+													src={avatarUrl}
 													alt={teammate.player.name || 'Player'}
 													class="h-full w-full rounded-full object-cover"
 													onerror={(e) => {