feat: add devices page with goal input and step log

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/.env.example

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+# Replace with your DB credentials!
+DATABASE_URL="postgres://user:password@host:port/db-name"
+
+SERVER_URL="http://localhost:8080"
+PUBLIC_SERVER_WS_URL="ws://localhost:8080"

web/src/lib/api/devices.remote.ts

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+import { query, getRequestEvent } from '$app/server';
+import { env } from '$env/dynamic/private';
+
+const SERVER_URL = env.SERVER_URL || 'http://localhost:8080';
+
+export const listDevices = query(async () => {
+	const { request } = getRequestEvent();
+
+	const res = await fetch(`${SERVER_URL}/devices`, {
+		headers: {
+			cookie: request.headers.get('cookie') ?? ''
+		}
+	});
+
+	if (!res.ok) return [];
+	return res.json();
+});

web/src/routes/dashboard/devices/+page.svelte

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+<script lang="ts">
+	import { listDevices } from '$lib/api/devices.remote';
+
+	const devices = await listDevices();
+</script>
+
+<h2 class="mb-6 text-2xl font-bold">Devices</h2>
+
+{#if devices.length === 0}
+	<div class="rounded-lg border border-neutral-200 p-8 text-center">
+		<p class="text-neutral-500">No devices connected.</p>
+		<p class="mt-2 text-sm text-neutral-400">
+			Install the Android app, paste your API key, and your device will appear here.
+		</p>
+		<a href="/dashboard/api-keys" class="mt-4 inline-block text-sm text-blue-600 hover:underline">
+			Create an API key
+		</a>
+	</div>
+{:else}
+	<div class="space-y-3">
+		{#each devices as device (device.deviceId)}
+			<a
+				href="/dashboard/devices/{device.deviceId}"
+				class="flex items-center justify-between rounded-lg border border-neutral-200 p-4 hover:border-neutral-400"
+			>
+				<div>
+					<p class="font-medium">{device.name}</p>
+					<p class="text-sm text-neutral-500">
+						Connected {new Date(device.connectedAt).toLocaleString()}
+					</p>
+				</div>
+				<span class="inline-block h-2 w-2 rounded-full bg-green-500"></span>
+			</a>
+		{/each}
+	</div>
+{/if}

web/src/routes/dashboard/devices/[deviceId]/+page.svelte

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+<script lang="ts">
+	import { page } from '$app/state';
+
+	const deviceId = page.params.deviceId;
+
+	let goal = $state('');
+	let steps = $state<Array<{ step: number; action: string; reasoning: string }>>([]);
+	let status = $state<'idle' | 'running' | 'completed' | 'failed'>('idle');
+
+	async function submitGoal() {
+		if (!goal.trim()) return;
+		status = 'running';
+		steps = [];
+
+		const res = await fetch('/api/goals', {
+			method: 'POST',
+			headers: { 'Content-Type': 'application/json' },
+			body: JSON.stringify({ deviceId, goal })
+		});
+
+		if (!res.ok) {
+			status = 'failed';
+			return;
+		}
+	}
+</script>
+
+<h2 class="mb-6 text-2xl font-bold">Device: {deviceId.slice(0, 8)}...</h2>
+
+<div class="max-w-2xl">
+	<div class="mb-8 rounded-lg border border-neutral-200 p-6">
+		<h3 class="mb-3 font-semibold">Send a Goal</h3>
+		<div class="flex gap-3">
+			<input
+				type="text"
+				bind:value={goal}
+				placeholder="e.g., Open YouTube and search for lofi beats"
+				class="flex-1 rounded border border-neutral-300 px-3 py-2 text-sm focus:border-neutral-500 focus:outline-none"
+				disabled={status === 'running'}
+			/>
+			<button
+				onclick={submitGoal}
+				disabled={status === 'running'}
+				class="rounded bg-neutral-800 px-4 py-2 text-sm text-white hover:bg-neutral-700 disabled:opacity-50"
+			>
+				{status === 'running' ? 'Running...' : 'Run'}
+			</button>
+		</div>
+	</div>
+
+	{#if steps.length > 0}
+		<div class="rounded-lg border border-neutral-200">
+			<div class="border-b border-neutral-200 px-6 py-4">
+				<h3 class="font-semibold">Steps</h3>
+			</div>
+			<div class="divide-y divide-neutral-100">
+				{#each steps as step (step.step)}
+					<div class="px-6 py-3">
+						<p class="text-sm font-medium">Step {step.step}: {step.action}</p>
+						<p class="text-sm text-neutral-500">{step.reasoning}</p>
+					</div>
+				{/each}
+			</div>
+		</div>
+	{/if}
+
+	{#if status === 'completed'}
+		<p class="mt-4 text-sm text-green-600">Goal completed successfully.</p>
+	{:else if status === 'failed'}
+		<p class="mt-4 text-sm text-red-600">Goal failed. Please try again.</p>
+	{/if}
+</div>