feat: v0.9.0 — single-screen 3-pane shell + left Assets pane (wallet/reputation/fleet/time controls) from a single /api/state poll; right pane placeholder

app/globals.css

@@ -67,3 +67,171 @@ body {
   font-size: 12px;
   color: #cbd5e1;
 }
+
+/* v0.9.0 — single-screen 3-pane shell: left Assets / center map / right Jobs & Market */
+.app-shell {
+  display: grid;
+  grid-template-columns: 300px minmax(0, 1fr) 320px;
+  height: 100%;
+}
+
+.pane {
+  background: #0f172a;
+  color: #e2e8f0;
+  padding: 14px;
+  font-size: 13px;
+  overflow-y: auto;
+}
+
+.left-pane {
+  border-right: 1px solid rgba(148, 163, 184, 0.25);
+}
+
+.right-pane {
+  border-left: 1px solid rgba(148, 163, 184, 0.25);
+}
+
+.pane-title {
+  margin: 0 0 12px;
+  font-size: 14px;
+  font-weight: 600;
+  color: #f8fafc;
+}
+
+.pane-heading {
+  margin: 0 0 8px;
+  font-size: 11px;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.05em;
+  color: #94a3b8;
+}
+
+.pane-section {
+  margin-bottom: 16px;
+}
+
+.pane-muted {
+  color: #94a3b8;
+  font-size: 12px;
+}
+
+.pane-error {
+  color: #fca5a5;
+  font-size: 12px;
+}
+
+.stat-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: baseline;
+  padding: 2px 0;
+}
+
+.stat-row span {
+  color: #94a3b8;
+  font-size: 12px;
+}
+
+.stat-row strong {
+  font-size: 13px;
+  color: #f8fafc;
+}
+
+.fleet-list {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.plane-row {
+  background: rgba(30, 41, 59, 0.6);
+  border-radius: 6px;
+  padding: 8px;
+}
+
+.plane-main {
+  display: flex;
+  justify-content: space-between;
+  align-items: baseline;
+  gap: 8px;
+}
+
+.plane-model {
+  font-weight: 600;
+  color: #f1f5f9;
+}
+
+.plane-status {
+  font-size: 11px;
+  padding: 1px 6px;
+  border-radius: 4px;
+  background: rgba(148, 163, 184, 0.2);
+  color: #cbd5e1;
+}
+
+.status-flying {
+  background: rgba(59, 130, 246, 0.25);
+  color: #bfdbfe;
+}
+
+.fuel-bar {
+  height: 4px;
+  border-radius: 2px;
+  background: rgba(148, 163, 184, 0.25);
+  margin: 6px 0 4px;
+  overflow: hidden;
+}
+
+.fuel-bar > div {
+  height: 100%;
+  border-radius: 2px;
+  background: #34d399;
+}
+
+.plane-sub {
+  display: flex;
+  justify-content: space-between;
+  gap: 8px;
+  font-size: 11px;
+  color: #cbd5e1;
+}
+
+.plane-loc {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.sim-clock {
+  margin: 0 0 8px;
+  font-size: 12px;
+  color: #cbd5e1;
+  font-variant-numeric: tabular-nums;
+}
+
+.time-controls {
+  display: flex;
+  gap: 8px;
+}
+
+.time-controls button,
+.time-controls select {
+  font-size: 12px;
+  padding: 4px 10px;
+  border-radius: 4px;
+  border: 1px solid rgba(148, 163, 184, 0.4);
+  background: rgba(30, 41, 59, 0.9);
+  color: #e2e8f0;
+}
+
+.time-controls button {
+  cursor: pointer;
+}
+
+.time-controls select {
+  flex: 1;
+}

app/page.tsx

@@ -1,9 +1,23 @@
 'use client';
 
 import dynamic from 'next/dynamic';
+import LeftPane from '@/components/LeftPane';
+import { useGameState } from '@/lib/useGameState';
 
 const Map = dynamic(() => import('@/components/Map'), { ssr: false });
 
 export default function Home() {
-  return <Map />;
+  // Single polling source for the whole shell (v0.9.0): one /api/state loop, snapshot passed
+  // down as props so later panes can share it without extra poll loops.
+  const { state, loading, error, refresh } = useGameState(1000);
+
+  return (
+    <div className="app-shell">
+      <LeftPane state={state} loading={loading} error={error} onRefresh={refresh} />
+      <Map />
+      <aside data-testid="right-pane" className="pane right-pane">
+        <h2 className="pane-title">Jobs &amp; Market</h2>
+      </aside>
+    </div>
+  );
 }