feat: use token from strategy config in simulation page

Like the backtest page, simulation now extracts the token from the
bot's strategy config instead of requiring user input. Shows token
name and truncated address.

src/frontend/src/routes/bot/[id]/simulate/+page.svelte

@@ -7,7 +7,8 @@
 	import { SignalChart, ProUpgradeBanner } from '$lib/components';
 
 	let botId = $derived($page.params.id);
-	let token = $state('PEPE');
+	let tokenName = $state('');
+	let tokenAddress = $state('');
 	let intervalSeconds = $state(60);
 	let autoExecute = $state(false);
 	let isRunning = $state(false);
@@ -27,6 +28,15 @@
 		try {
 			const bot = await api.bots.get(botId);
 			setCurrentBot(bot);
+			
+			// Extract token info from strategy config
+			const strategy = bot.strategy_config;
+			if (strategy) {
+				const condition = strategy.conditions?.[0];
+				const action = strategy.actions?.[0];
+				tokenName = condition?.token || action?.token || '';
+				tokenAddress = condition?.token_address || action?.token_address || '';
+			}
 		} catch (e) {
 			goto('/dashboard');
 		}
@@ -57,7 +67,7 @@
 
 		try {
 			const simulation = await api.simulate.start(botId, {
-				token,
+				token: tokenAddress,
 				interval_seconds: intervalSeconds,
 				auto_execute: autoExecute
 			});
@@ -111,9 +121,14 @@
 
 			<form onsubmit={(e) => { e.preventDefault(); startSimulation(); }}>
 				<div class="form-row">
-					<div class="field">
-						<label for="token">Token</label>
-						<input type="text" id="token" bind:value={token} required disabled={isRunning} />
+					<div class="field token-info">
+						<label>Token</label>
+						<div class="token-display">
+							<span class="token-name">{tokenName || 'Not configured'}</span>
+							{#if tokenAddress}
+								<span class="token-address">{tokenAddress.slice(0, 10)}...{tokenAddress.slice(-8)}</span>
+							{/if}
+						</div>
 					</div>
 					<div class="field">
 						<label for="interval">Check Interval (seconds)</label>
@@ -276,6 +291,27 @@
 		gap: 0.5rem;
 	}
 
+	.token-display {
+		display: flex;
+		flex-direction: column;
+		gap: 0.25rem;
+		padding: 0.75rem;
+		background: rgba(255, 255, 255, 0.05);
+		border: 1px solid rgba(255, 255, 255, 0.2);
+		border-radius: 8px;
+	}
+
+	.token-name {
+		font-weight: 600;
+		color: #667eea;
+	}
+
+	.token-address {
+		font-size: 0.8rem;
+		color: #888;
+		font-family: 'Monaco', 'Menlo', monospace;
+	}
+
 	.checkbox-field {
 		flex-direction: row;
 		align-items: center;