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Add per-capsule stats detail page with live CPU/RAM charts

Browse Source 
- New detail page at /dashboard/capsules/[id] with Stats and Files tabs
- Stats tab shows capsule info card (status, template, CPU, memory, disk,
  started, idle timeout) and two stacked Chart.js charts with live values
- Metrics API client with 10s polling and moving-average smoothing
- Capsule ID in list table is now a clickable link to the detail page
- Layout breadcrumb header (Capsules > sb-xxx) with back navigation
- Fix metrics sampler: use v.PID() directly as Firecracker PID since
  unshare -m execs (not forks) through the bash/ip-netns-exec/firecracker
  chain, so all share the same PID. Removes unused findChildPID.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Rafeed M. Bhuiyan
2026-03-25 22:31:05 +06:00
parent 27ff828e60
commit ed7880bc6c
7 changed files with 665 additions and 65 deletions
Download Patch File Download Diff File Expand all files Collapse all files

68
frontend/src/routes/dashboard/capsules/+layout.svelte
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@ -1,4 +1,5 @@
<script lang="ts">
import { page } from '$app/stores';
import Sidebar from '$lib/components/Sidebar.svelte';
import { capsuleRunningCount } from '$lib/capsule-store.svelte';
@ -19,35 +20,54 @@
<Sidebar bind:collapsed />
<div class="flex flex-1 flex-col overflow-hidden">
<main class="flex-1 overflow-y-auto bg-[var(--color-bg-0)]">
<main class="flex flex-1 flex-col overflow-y-auto bg-[var(--color-bg-0)]">
<!-- Header area -->
<div class="px-7 pt-8 pb-6">
<div class="flex items-center justify-between">
<div>
<h1 class="font-serif text-page tracking-[-0.02em] text-[var(--color-text-bright)]">
Capsules
</h1>
<p class="mt-2 text-ui text-[var(--color-text-secondary)]">
Isolated VMs. Start cold in under a second — pause, snapshot, or destroy at will.
</p>
</div>
<div class="flex items-center gap-3">
<div
class="flex items-center gap-2.5 rounded-[var(--radius-card)] border border-[var(--color-accent)]/20 bg-[var(--color-bg-2)] px-3.5 py-2"
{#if $page.params.id}
<!-- Breadcrumb header for capsule detail (no border-b — tabs provide it) -->
<div class="px-7 pt-8">
<div class="flex items-center gap-2.5">
<a
href="/dashboard/capsules"
class="font-serif text-page leading-none tracking-[-0.02em] text-[var(--color-text-secondary)] transition-colors duration-150 hover:text-[var(--color-text-bright)]"
>
<span class="relative flex h-[8px] w-[8px]">
<span
class="animate-status-ping absolute inline-flex h-full w-full rounded-full bg-[var(--color-accent)]"
></span>
<span class="relative inline-flex h-[8px] w-[8px] rounded-full bg-[var(--color-accent)]"></span>
</span>
<span class="font-mono text-body font-semibold text-[var(--color-accent-bright)]">{capsuleRunningCount.value}</span>
<span class="text-ui text-[var(--color-text-secondary)]">running now</span>
Capsules
</a>
<span class="text-[var(--color-text-muted)] select-none" style="font-size: 1.1rem">›</span>
<span class="font-mono text-[1.1rem] leading-none text-[var(--color-text-bright)]">
{$page.params.id}
</span>
</div>
</div>
{:else}
<!-- Default list header -->
<div class="px-7 pt-8 pb-6">
<div class="flex items-center justify-between">
<div>
<h1 class="font-serif text-page tracking-[-0.02em] text-[var(--color-text-bright)]">
Capsules
</h1>
<p class="mt-2 text-ui text-[var(--color-text-secondary)]">
Isolated VMs. Start cold in under a second — pause, snapshot, or destroy at will.
</p>
</div>
<div class="flex items-center gap-3">
<div
class="flex items-center gap-2.5 rounded-[var(--radius-card)] border border-[var(--color-accent)]/20 bg-[var(--color-bg-2)] px-3.5 py-2"
>
<span class="relative flex h-[8px] w-[8px]">
<span
class="animate-status-ping absolute inline-flex h-full w-full rounded-full bg-[var(--color-accent)]"
></span>
<span class="relative inline-flex h-[8px] w-[8px] rounded-full bg-[var(--color-accent)]"></span>
</span>
<span class="font-mono text-body font-semibold text-[var(--color-accent-bright)]">{capsuleRunningCount.value}</span>
<span class="text-ui text-[var(--color-text-secondary)]">running now</span>
</div>
</div>
</div>
</div>
</div>
{/if}
{@render children()}
</main>

4
frontend/src/routes/dashboard/capsules/+page.svelte
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@ -443,9 +443,9 @@
{/if}
{#if searchQuery && capsule.id.toLowerCase().includes(searchQuery.toLowerCase())}
{@const matchIdx = capsule.id.toLowerCase().indexOf(searchQuery.toLowerCase())}
<span class="font-mono text-ui text-[var(--color-text-bright)]">{capsule.id.slice(0, matchIdx)}<mark class="rounded-[2px] bg-[var(--color-accent-glow-mid)] px-0.5 text-[var(--color-accent-bright)] not-italic">{capsule.id.slice(matchIdx, matchIdx + searchQuery.length)}</mark>{capsule.id.slice(matchIdx + searchQuery.length)}</span>
<a href="/dashboard/capsules/{capsule.id}" class="font-mono text-ui text-[var(--color-text-bright)] hover:text-[var(--color-accent-bright)] transition-colors duration-150">{capsule.id.slice(0, matchIdx)}<mark class="rounded-[2px] bg-[var(--color-accent-glow-mid)] px-0.5 text-[var(--color-accent-bright)] not-italic">{capsule.id.slice(matchIdx, matchIdx + searchQuery.length)}</mark>{capsule.id.slice(matchIdx + searchQuery.length)}</a>
{:else}
<span class="font-mono text-ui text-[var(--color-text-bright)]">{capsule.id}</span>
<a href="/dashboard/capsules/{capsule.id}" class="font-mono text-ui text-[var(--color-text-bright)] hover:text-[var(--color-accent-bright)] transition-colors duration-150">{capsule.id}</a>
{/if}
</div>

582
frontend/src/routes/dashboard/capsules/[id]/+page.svelte Normal file
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@ -0,0 +1,582 @@
<script lang="ts">
import { onMount, onDestroy, tick } from 'svelte';
import { page } from '$app/stores';
import { goto } from '$app/navigation';
import { getCapsule, type Capsule } from '$lib/api/capsules';
import {
fetchSandboxMetrics,
METRIC_RANGES,
METRIC_POLL_INTERVAL,
type MetricRange,
type MetricPoint
} from '$lib/api/metrics';
const sandboxId: string = $page.params.id ?? '';
let capsule = $state<Capsule | null>(null);
let capsuleLoading = $state(true);
let capsuleError = $state<string | null>(null);
type Tab = 'metrics' | 'files';
let activeTab = $state<Tab>('metrics');
let range = $state<MetricRange>('10m');
let points = $state<MetricPoint[]>([]);
let metricsLoading = $state(true);
let metricsError = $state<string | null>(null);
let canvasCpu = $state<HTMLCanvasElement | undefined>(undefined);
let canvasRam = $state<HTMLCanvasElement | undefined>(undefined);
// eslint-disable-next-line @typescript-eslint/no-explicit-any
let chartCpu: any = null;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
let chartRam: any = null;
let pollInterval: ReturnType<typeof setInterval> | null = null;
const metricsAvailable = $derived(
capsule?.status === 'running' || capsule?.status === 'paused'
);
// Latest values for live reading display in chart headers
const latestCpu = $derived<number | null>(
points.length > 0 ? points[points.length - 1].cpu_pct : null
);
const latestRamMB = $derived<number | null>(
points.length > 0 ? points[points.length - 1].mem_bytes / 1_048_576 : null
);
async function loadCapsule() {
const result = await getCapsule(sandboxId);
if (result.ok) {
capsule = result.data;
capsuleError = null;
} else {
capsuleError = result.error;
}
capsuleLoading = false;
}
async function loadMetrics() {
if (!metricsAvailable) return;
const result = await fetchSandboxMetrics(sandboxId, range);
if (result.ok) {
points = result.data.points;
metricsError = null;
} else {
metricsError = result.error;
}
metricsLoading = false;
updateCharts();
}
/** Simple moving average — smooths noisy high-frequency samples. */
function smooth(data: number[], window: number): number[] {
if (window <= 1) return data;
const out: number[] = [];
for (let i = 0; i < data.length; i++) {
const start = Math.max(0, i - Math.floor(window / 2));
const end = Math.min(data.length, i + Math.ceil(window / 2));
let sum = 0;
for (let j = start; j < end; j++) sum += data[j];
out.push(+(sum / (end - start)).toFixed(2));
}
return out;
}
/** Window size scales with point count — more data = more smoothing. */
function smoothWindow(count: number): number {
if (count < 60) return 1; // < 60 pts: no smoothing
if (count < 200) return 3;
if (count < 600) return 5;
return 9;
}
function updateCharts() {
if (!points.length) return;
const labels = formatLabels(Array.from(points), range);
const w = smoothWindow(points.length);
if (chartCpu) {
chartCpu.data.labels = labels;
chartCpu.data.datasets[0].data = smooth(
Array.from(points.map((p) => +p.cpu_pct.toFixed(2))), w
);
chartCpu.update();
}
if (chartRam) {
chartRam.data.labels = labels;
chartRam.data.datasets[0].data = smooth(
Array.from(points.map((p) => +(p.mem_bytes / 1_048_576).toFixed(1))), w
);
chartRam.update();
}
}
function formatLabels(pts: MetricPoint[], r: MetricRange): string[] {
return pts.map((p) => {
const d = new Date(p.timestamp_unix * 1000);
if (r === '5m' || r === '10m') {
return d.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit', second: '2-digit' });
}
return d.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' });
});
}
function setRange(r: MetricRange) {
range = r;
goto(`?range=${r}`, { replaceState: true, noScroll: true, keepFocus: true });
metricsLoading = true;
restartPolling();
}
function restartPolling() {
if (pollInterval) clearInterval(pollInterval);
loadMetrics();
pollInterval = setInterval(loadMetrics, METRIC_POLL_INTERVAL);
}
// Chart design tokens (match StatsPanel.svelte)
const C_BLUE = '#5a9fd4';
const C_BLUE_FILL = 'rgba(90,159,212,0.11)';
const C_AMBER = '#d4a73c';
const C_AMBER_FILL = 'rgba(212,167,60,0.11)';
const C_GRID = 'rgba(255,255,255,0.05)';
const C_TICK = '#635f5c';
const FONT_MONO = "'JetBrains Mono', monospace";
const BASE_CHART_OPTIONS = {
responsive: true,
maintainAspectRatio: false,
animation: false as const,
interaction: { mode: 'index' as const, intersect: false },
plugins: {
legend: { display: false },
tooltip: {
backgroundColor: '#111412',
borderColor: '#1f2321',
borderWidth: 1,
titleColor: '#454340',
bodyColor: '#d4cfc8',
titleFont: { family: FONT_MONO, size: 10 },
bodyFont: { family: FONT_MONO, size: 11 },
padding: 10,
caretSize: 4,
},
},
scales: {
x: {
grid: { color: C_GRID },
ticks: {
color: C_TICK,
font: { family: FONT_MONO, size: 10 },
maxTicksLimit: 8,
maxRotation: 0,
},
border: { color: C_GRID },
},
y: {
grid: { color: C_GRID },
ticks: { color: C_TICK, font: { family: FONT_MONO, size: 10 } },
border: { color: C_GRID },
beginAtZero: true,
},
},
};
onMount(async () => {
const urlRange = new URLSearchParams(window.location.search).get('range');
if (urlRange && METRIC_RANGES.includes(urlRange as MetricRange)) {
range = urlRange as MetricRange;
}
await loadCapsule();
if (!metricsAvailable) return;
await tick();
if (!canvasCpu || !canvasRam) return;
const { Chart } = await import('chart.js/auto');
chartCpu = new Chart(canvasCpu, {
type: 'line',
data: {
labels: [],
datasets: [
{
data: [],
borderColor: C_BLUE,
backgroundColor: C_BLUE_FILL,
borderWidth: 2,
fill: true,
tension: 0,
pointRadius: 0,
pointHoverRadius: 4,
pointHoverBackgroundColor: C_BLUE,
},
],
},
options: {
...BASE_CHART_OPTIONS,
plugins: {
...BASE_CHART_OPTIONS.plugins,
tooltip: {
...BASE_CHART_OPTIONS.plugins.tooltip,
callbacks: {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
label: (ctx: any) => ` ${ctx.parsed.y.toFixed(1)}%`,
},
},
},
scales: {
...BASE_CHART_OPTIONS.scales,
y: {
...BASE_CHART_OPTIONS.scales.y,
ticks: {
...BASE_CHART_OPTIONS.scales.y.ticks,
callback: (v: string | number) => `${+v}%`,
},
},
},
},
});
chartRam = new Chart(canvasRam, {
type: 'line',
data: {
labels: [],
datasets: [
{
data: [],
borderColor: C_AMBER,
backgroundColor: C_AMBER_FILL,
borderWidth: 2,
fill: true,
tension: 0,
pointRadius: 0,
pointHoverRadius: 4,
pointHoverBackgroundColor: C_AMBER,
},
],
},
options: {
...BASE_CHART_OPTIONS,
plugins: {
...BASE_CHART_OPTIONS.plugins,
tooltip: {
...BASE_CHART_OPTIONS.plugins.tooltip,
callbacks: {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
label: (ctx: any) => ` ${ctx.parsed.y.toFixed(0)} MB`,
},
},
},
scales: {
...BASE_CHART_OPTIONS.scales,
y: {
...BASE_CHART_OPTIONS.scales.y,
ticks: {
...BASE_CHART_OPTIONS.scales.y.ticks,
callback: (v: string | number) => `${+v} MB`,
},
},
},
},
});
updateCharts();
restartPolling();
});
onDestroy(() => {
if (pollInterval) clearInterval(pollInterval);
chartCpu?.destroy();
chartRam?.destroy();
});
function statusColor(status: string): string {
switch (status) {
case 'running': return 'var(--color-accent)';
case 'paused': return 'var(--color-amber)';
case 'error': return 'var(--color-red)';
default: return 'var(--color-text-muted)';
}
}
function statusBg(status: string): string {
switch (status) {
case 'running': return 'rgba(94,140,88,0.12)';
case 'paused': return 'rgba(212,167,60,0.12)';
case 'error': return 'rgba(207,129,114,0.12)';
default: return 'rgba(255,255,255,0.05)';
}
}
function statusBorder(status: string): string {
switch (status) {
case 'running': return 'rgba(94,140,88,0.3)';
case 'paused': return 'rgba(212,167,60,0.3)';
case 'error': return 'rgba(207,129,114,0.3)';
default: return 'rgba(255,255,255,0.08)';
}
}
function fmtDate(iso: string | null | undefined): string {
if (!iso) return '—';
return new Date(iso).toLocaleString([], {
month: 'short', day: 'numeric',
hour: '2-digit', minute: '2-digit',
});
}
function fmtTimeout(sec: number): string {
if (!sec) return 'None';
if (sec < 60) return `${sec}s`;
if (sec < 3600) return `${Math.round(sec / 60)}m`;
return `${Math.round(sec / 3600)}h`;
}
</script>
<svelte:head>
<title>Wrenn — {sandboxId}</title>
</svelte:head>
<style>
.metric-val {
transition: color 0.3s ease;
}
@keyframes fadeSlideUp {
from { opacity: 0; transform: translateY(6px); }
to { opacity: 1; transform: translateY(0); }
}
.anim-in {
animation: fadeSlideUp 0.28s ease both;
}
</style>
{#if capsuleLoading}
<div class="flex items-center justify-center py-24">
<div class="flex items-center gap-3 text-ui text-[var(--color-text-secondary)]">
<svg class="animate-spin" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<path d="M21 12a9 9 0 1 1-6.219-8.56" />
</svg>
Loading capsule...
</div>
</div>
{:else if capsuleError}
<div class="px-7 py-8">
<div class="flex items-center gap-3 rounded-[var(--radius-card)] border border-[var(--color-red)]/30 bg-[var(--color-red)]/8 px-5 py-4">
<svg class="shrink-0 text-[var(--color-red)]" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
<circle cx="12" cy="12" r="10" /><line x1="12" y1="8" x2="12" y2="12" /><line x1="12" y1="16" x2="12.01" y2="16" />
</svg>
<span class="text-ui text-[var(--color-red)]">{capsuleError}</span>
</div>
</div>
{:else if capsule}
<div class="flex flex-1 flex-col min-h-0">
<!-- Tabs (matches Templates page pattern) -->
<div class="mt-5 flex gap-0 border-b border-[var(--color-border)] px-7">
<button
onclick={() => (activeTab = 'metrics')}
class="flex items-center gap-2 border-b-2 px-4 py-2.5 text-ui font-medium transition-colors duration-150
{activeTab === 'metrics'
? 'border-[var(--color-accent)] text-[var(--color-accent-bright)]'
: 'border-transparent text-[var(--color-text-secondary)] hover:text-[var(--color-text-primary)]'}"
>
<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
<polyline points="22 12 18 12 15 21 9 3 6 12 2 12" />
</svg>
Stats
</button>
<button
disabled
title="Coming soon"
class="flex cursor-not-allowed items-center gap-2 border-b-2 border-transparent px-4 py-2.5 text-ui font-medium opacity-40"
>
<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
<path d="M22 19a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h5l2 3h9a2 2 0 0 1 2 2z" />
</svg>
Files
<span class="rounded-[3px] bg-[var(--color-bg-4)] px-1.5 py-0.5 text-badge font-semibold uppercase tracking-[0.06em] text-[var(--color-text-muted)]">
Soon
</span>
</button>
</div>
<!-- Stats tab content -->
{#if activeTab === 'metrics'}
<div
class="anim-in flex flex-1 flex-col gap-5 min-h-0 p-8"
style="animation-delay: 0.05s"
>
<!-- Controls row -->
<div class="flex items-center justify-between">
{#if metricsAvailable && !metricsLoading}
<span class="flex items-center gap-1.5 rounded-[3px] border border-[var(--color-accent)]/25 bg-[var(--color-accent-glow-mid)] px-2 py-1 text-badge font-semibold uppercase tracking-[0.05em] text-[var(--color-accent-mid)]">
<span class="h-[5px] w-[5px] rounded-full bg-[var(--color-accent)]" style="animation: wrenn-glow 2.5s ease-in-out infinite"></span>
Live
</span>
{:else}
<div></div>
{/if}
{#if metricsAvailable}
<div class="flex overflow-hidden rounded-[var(--radius-button)] border border-[var(--color-border)]">
{#each METRIC_RANGES as r, i}
<button
onclick={() => setRange(r)}
class="px-3 py-1.5 font-mono text-label transition-colors duration-150
{range === r
? 'bg-[var(--color-bg-5)] text-[var(--color-text-bright)]'
: 'text-[var(--color-text-tertiary)] hover:bg-[var(--color-bg-3)] hover:text-[var(--color-text-secondary)]'}
{i > 0 ? 'border-l border-[var(--color-border)]' : ''}"
>
{r}
</button>
{/each}
</div>
{/if}
</div>
<!-- Info card (StatsPanel style) -->
<div class="overflow-hidden rounded-[var(--radius-card)] border border-[var(--color-border)]">
<div class="flex divide-x divide-[var(--color-border)]">
<!-- Status -->
<div class="flex flex-1 flex-col gap-2.5 bg-[var(--color-bg-3)] px-6 py-5" style="box-shadow: inset 5px 0 0 {statusColor(capsule.status)}">
<div class="text-label font-semibold uppercase tracking-[0.06em] text-[var(--color-text-tertiary)]">Status</div>
<span
class="inline-flex items-center gap-1.5 self-start rounded-full px-2.5 py-1 text-label font-semibold uppercase tracking-[0.05em]"
style="color: {statusColor(capsule.status)}; background: {statusBg(capsule.status)}; border: 1px solid {statusBorder(capsule.status)}"
>
{#if capsule.status === 'running'}
<span class="relative flex h-[5px] w-[5px] shrink-0">
<span class="animate-status-ping absolute inline-flex h-full w-full rounded-full bg-[var(--color-accent)]"></span>
<span class="relative inline-flex h-[5px] w-[5px] rounded-full bg-[var(--color-accent)]"></span>
</span>
{/if}
{capsule.status}
</span>
</div>
<!-- Template -->
<div class="flex flex-1 flex-col gap-2.5 bg-[var(--color-bg-3)] px-6 py-5">
<div class="text-label font-semibold uppercase tracking-[0.06em] text-[var(--color-text-tertiary)]">Template</div>
<span class="font-mono text-ui text-[var(--color-text-bright)]">{capsule.template}</span>
</div>
<!-- CPU -->
<div class="flex flex-1 flex-col gap-2.5 bg-[var(--color-bg-3)] px-6 py-5">
<div class="text-label font-semibold uppercase tracking-[0.05em] text-[var(--color-text-tertiary)]">CPU</div>
<div class="mt-0.5 flex items-baseline gap-1">
<span class="font-serif text-[2.571rem] leading-none tracking-[-0.04em] text-[var(--color-text-bright)]">{capsule.vcpus}</span>
<span class="font-mono text-label text-[var(--color-text-muted)]">vCPU{capsule.vcpus !== 1 ? 's' : ''}</span>
</div>
</div>
<!-- Memory -->
<div class="flex flex-1 flex-col gap-2.5 bg-[var(--color-bg-3)] px-6 py-5">
<div class="text-label font-semibold uppercase tracking-[0.05em] text-[var(--color-text-tertiary)]">Memory</div>
<div class="mt-0.5 flex items-baseline gap-1">
<span class="font-serif text-[2.571rem] leading-none tracking-[-0.04em] text-[var(--color-text-bright)]">{capsule.memory_mb}</span>
<span class="font-mono text-label text-[var(--color-text-muted)]">MB</span>
</div>
</div>
<!-- Disk -->
<div class="flex flex-1 flex-col gap-2.5 bg-[var(--color-bg-3)] px-6 py-5">
<div class="text-label font-semibold uppercase tracking-[0.05em] text-[var(--color-text-tertiary)]">Disk</div>
<span class="mt-0.5 font-serif text-[2.571rem] leading-none tracking-[-0.04em] text-[var(--color-text-muted)]">—</span>
</div>
<!-- Started -->
<div class="flex flex-1 flex-col gap-2.5 bg-[var(--color-bg-3)] px-6 py-5">
<div class="text-label font-semibold uppercase tracking-[0.06em] text-[var(--color-text-tertiary)]">Started</div>
<span class="font-mono text-ui text-[var(--color-text-secondary)]">{fmtDate(capsule.started_at)}</span>
</div>
<!-- Idle Timeout -->
<div class="flex flex-1 flex-col gap-2.5 bg-[var(--color-bg-3)] px-6 py-5">
<div class="text-label font-semibold uppercase tracking-[0.06em] text-[var(--color-text-tertiary)]">Idle Timeout</div>
<span class="font-mono text-ui text-[var(--color-text-secondary)]">{fmtTimeout(capsule.timeout_sec)}</span>
</div>
</div>
</div>
{#if metricsError}
<div class="flex items-center gap-3 rounded-[var(--radius-card)] border border-[var(--color-red)]/30 bg-[var(--color-red)]/8 px-4 py-3">
<svg class="shrink-0 text-[var(--color-red)]" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
<circle cx="12" cy="12" r="10" /><line x1="12" y1="8" x2="12" y2="12" /><line x1="12" y1="16" x2="12.01" y2="16" />
</svg>
<span class="text-ui text-[var(--color-red)]">Failed to load metrics: {metricsError}</span>
</div>
{/if}
{#if metricsAvailable}
<!-- Charts stacked — grow to fill remaining space -->
<div class="flex flex-1 flex-col gap-5 min-h-0">
<!-- CPU Usage -->
<div class="flex flex-1 flex-col rounded-[var(--radius-card)] border border-[var(--color-border)] bg-[var(--color-bg-2)]">
<div class="flex items-center justify-between border-b border-[var(--color-border)] px-6 py-4">
<div class="flex items-center gap-2">
<span class="h-2 w-2 shrink-0 rounded-full" style="background: #5a9fd4"></span>
<span class="text-label font-semibold uppercase tracking-[0.06em] text-[var(--color-text-tertiary)]">CPU Usage</span>
</div>
{#if latestCpu !== null}
<div class="flex items-baseline gap-1">
<span class="metric-val font-serif text-[2.571rem] leading-none tracking-[-0.04em] text-[var(--color-text-bright)]">{latestCpu.toFixed(1)}</span>
<span class="font-mono text-label text-[var(--color-text-muted)]">%</span>
</div>
{:else if metricsLoading}
<span class="font-serif text-[2.571rem] leading-none text-[var(--color-text-muted)]">—</span>
{/if}
</div>
<div class="relative flex-1 min-h-[180px] px-5 pb-5 pt-3">
<canvas bind:this={canvasCpu}></canvas>
</div>
</div>
<!-- RAM Usage -->
<div class="flex flex-1 flex-col rounded-[var(--radius-card)] border border-[var(--color-border)] bg-[var(--color-bg-2)]">
<div class="flex items-center justify-between border-b border-[var(--color-border)] px-6 py-4">
<div class="flex items-center gap-2">
<span class="h-2 w-2 shrink-0 rounded-full" style="background: #d4a73c"></span>
<span class="text-label font-semibold uppercase tracking-[0.06em] text-[var(--color-text-tertiary)]">RAM Usage</span>
</div>
{#if latestRamMB !== null}
<div class="flex items-baseline gap-1">
<span class="metric-val font-serif text-[2.571rem] leading-none tracking-[-0.04em] text-[var(--color-text-bright)]">{latestRamMB.toFixed(0)}</span>
<span class="font-mono text-label text-[var(--color-text-muted)]">MB</span>
</div>
{:else if metricsLoading}
<span class="font-serif text-[2.571rem] leading-none text-[var(--color-text-muted)]">—</span>
{/if}
</div>
<div class="relative flex-1 min-h-[180px] px-5 pb-5 pt-3">
<canvas bind:this={canvasRam}></canvas>
</div>
</div>
</div>
{:else}
<!-- Stats unavailable — capsule not running/paused -->
<div class="flex items-center gap-3 rounded-[var(--radius-card)] border border-[var(--color-border-mid)] bg-[var(--color-bg-2)] px-5 py-4">
<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="var(--color-text-muted)" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
<polyline points="22 12 18 12 15 21 9 3 6 12 2 12" />
</svg>
<span class="text-ui text-[var(--color-text-tertiary)]">
Live stats are only available for running or paused capsules —
current status: <span class="font-mono" style="color: {statusColor(capsule.status)}">{capsule.status}</span>
</span>
</div>
{/if}
</div>
{/if}
</div>
{/if}