diff --git a/ui/settings_panel.css b/ui/settings_panel.css
new file mode 100644
index 0000000..168ea93
--- /dev/null
+++ b/ui/settings_panel.css
@@ -0,0 +1,343 @@
+/* settings_panel.css — Saltybot Settings (Issue #614) */
+
+*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
+
+:root {
+ --bg0: #050510;
+ --bg1: #070712;
+ --bg2: #0a0a1a;
+ --bd: #0c2a3a;
+ --bd2: #1e3a5f;
+ --dim: #374151;
+ --mid: #6b7280;
+ --base: #9ca3af;
+ --hi: #d1d5db;
+ --cyan: #06b6d4;
+ --green: #22c55e;
+ --amber: #f59e0b;
+ --red: #ef4444;
+}
+
+body {
+ font-family: 'Courier New', Courier, monospace;
+ font-size: 12px;
+ background: var(--bg0);
+ color: var(--base);
+ height: 100dvh;
+ display: flex;
+ flex-direction: column;
+ overflow: hidden;
+}
+
+/* ── Header ── */
+#header {
+ display: flex;
+ align-items: center;
+ padding: 5px 12px;
+ background: var(--bg1);
+ border-bottom: 1px solid var(--bd);
+ flex-shrink: 0;
+ gap: 8px;
+ flex-wrap: wrap;
+}
+.logo { color: #f97316; font-weight: bold; letter-spacing: .15em; font-size: 13px; flex-shrink: 0; }
+
+#conn-dot {
+ width: 8px; height: 8px; border-radius: 50%;
+ background: var(--dim); flex-shrink: 0; transition: background .3s;
+}
+#conn-dot.connected { background: var(--green); }
+#conn-dot.error { background: var(--red); animation: blink 1s infinite; }
+
+@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.3} }
+@keyframes fadeout { 0%{opacity:1} 70%{opacity:1} 100%{opacity:0} }
+
+.save-ind {
+ font-size: 10px; font-weight: bold; letter-spacing: .1em;
+ color: var(--green); padding: 2px 8px;
+ border: 1px solid var(--green); border-radius: 3px;
+ animation: fadeout 2s forwards;
+}
+.save-ind.hidden { display: none; }
+
+#ws-input {
+ background: var(--bg2); border: 1px solid var(--bd2); border-radius: 4px;
+ color: #67e8f9; padding: 2px 7px; font-family: monospace; font-size: 11px; width: 185px;
+}
+#ws-input:focus { outline: none; border-color: var(--cyan); }
+
+.hbtn {
+ padding: 2px 8px; border-radius: 4px; border: 1px solid var(--bd2);
+ background: var(--bg2); color: #67e8f9; font-family: monospace;
+ font-size: 10px; font-weight: bold; cursor: pointer; transition: background .15s;
+ white-space: nowrap;
+}
+.hbtn:hover { background: #0e4f69; }
+.apply-btn { border-color: #14532d; color: #86efac; }
+.apply-btn:hover { background: #052010; }
+.del-btn { border-color: #7f1d1d; color: #fca5a5; }
+.del-btn:hover { background: #1c0505; }
+
+/* ── Tab bar ── */
+#tab-bar {
+ display: flex;
+ background: var(--bg1);
+ border-bottom: 1px solid var(--bd);
+ flex-shrink: 0;
+ padding: 0 12px;
+ gap: 2px;
+}
+.tab-btn {
+ padding: 6px 14px;
+ background: none;
+ border: none;
+ border-bottom: 2px solid transparent;
+ color: var(--mid);
+ font-family: 'Courier New', monospace;
+ font-size: 11px;
+ font-weight: bold;
+ letter-spacing: .1em;
+ cursor: pointer;
+ transition: color .15s, border-color .15s;
+}
+.tab-btn:hover { color: var(--base); }
+.tab-btn.active { color: var(--cyan); border-bottom-color: var(--cyan); }
+
+/* ── Main ── */
+#main {
+ flex: 1;
+ overflow-y: auto;
+ padding: 12px;
+ min-height: 0;
+}
+
+/* ── Tab panels ── */
+.tab-panel { display: none; }
+.tab-panel.active { display: block; }
+
+.panel-col {
+ display: flex;
+ flex-direction: column;
+ gap: 12px;
+ max-width: 860px;
+ margin: 0 auto;
+}
+
+/* ── Section card ── */
+.section-card {
+ background: var(--bg2);
+ border: 1px solid var(--bd2);
+ border-radius: 8px;
+ padding: 12px;
+}
+.sec-header {
+ display: flex;
+ justify-content: space-between;
+ align-items: flex-start;
+ margin-bottom: 10px;
+ gap: 8px;
+ flex-wrap: wrap;
+}
+.sec-title {
+ font-size: 11px; font-weight: bold; letter-spacing: .1em;
+ color: #67e8f9; text-transform: uppercase;
+}
+.sec-node {
+ font-size: 9px; color: var(--mid); margin-top: 2px;
+}
+.sec-actions { display: flex; gap: 6px; flex-shrink: 0; }
+
+/* ── Parameter fields ── */
+.param-row {
+ display: grid;
+ grid-template-columns: 180px 1fr 80px 50px;
+ align-items: center;
+ gap: 8px;
+ padding: 5px 0;
+ border-bottom: 1px solid var(--bd);
+}
+.param-row:last-child { border-bottom: none; }
+.param-label { font-size: 10px; color: var(--mid); }
+.param-unit { font-size: 9px; color: var(--dim); text-align: right; }
+
+/* Slider */
+.param-slider {
+ -webkit-appearance: none;
+ width: 100%; height: 4px; border-radius: 2px;
+ background: var(--bd2); outline: none; cursor: pointer;
+}
+.param-slider::-webkit-slider-thumb {
+ -webkit-appearance: none;
+ width: 12px; height: 12px; border-radius: 50%;
+ background: var(--cyan); cursor: pointer;
+}
+.param-slider::-moz-range-thumb {
+ width: 12px; height: 12px; border-radius: 50%;
+ background: var(--cyan); cursor: pointer; border: none;
+}
+.param-slider.changed::-webkit-slider-thumb { background: var(--amber); }
+.param-slider.changed::-moz-range-thumb { background: var(--amber); }
+
+/* Number input */
+.param-input {
+ background: var(--bg0); border: 1px solid var(--bd2);
+ border-radius: 3px; color: var(--hi); padding: 2px 5px;
+ font-family: monospace; font-size: 10px; text-align: right;
+ width: 72px;
+}
+.param-input:focus { outline: none; border-color: var(--cyan); }
+.param-input.changed { border-color: var(--amber); color: var(--amber); }
+
+/* Toggle switch */
+.toggle-row {
+ display: grid;
+ grid-template-columns: 180px 1fr auto;
+ align-items: center;
+ gap: 8px;
+ padding: 6px 0;
+ border-bottom: 1px solid var(--bd);
+}
+.toggle-row:last-child { border-bottom: none; }
+.toggle-desc { font-size: 9px; color: var(--dim); }
+
+.toggle-switch {
+ position: relative;
+ width: 36px; height: 18px; flex-shrink: 0;
+}
+.toggle-switch input { opacity: 0; width: 0; height: 0; }
+.toggle-track {
+ position: absolute; inset: 0;
+ background: var(--dim); border-radius: 9px; cursor: pointer;
+ transition: background .2s;
+}
+.toggle-track::after {
+ content: '';
+ position: absolute;
+ left: 2px; top: 2px;
+ width: 14px; height: 14px;
+ border-radius: 50%;
+ background: #fff;
+ transition: transform .2s;
+}
+.toggle-switch input:checked + .toggle-track { background: var(--cyan); }
+.toggle-switch input:checked + .toggle-track::after { transform: translateX(18px); }
+
+/* Status / feedback line */
+.sec-status {
+ margin-top: 6px;
+ font-size: 9px;
+ min-height: 14px;
+ transition: color .3s;
+}
+.sec-status.ok { color: var(--green); }
+.sec-status.err { color: var(--red); }
+.sec-status.loading { color: var(--amber); }
+
+/* ── System tab ── */
+.diag-placeholder {
+ color: var(--dim); font-size: 10px; padding: 12px 0; text-align: center;
+}
+#diag-grid {
+ display: grid;
+ grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
+ gap: 8px;
+}
+.diag-card {
+ background: var(--bg0);
+ border: 1px solid var(--bd);
+ border-radius: 5px;
+ padding: 8px;
+}
+.diag-card-title {
+ font-size: 9px; font-weight: bold; letter-spacing: .08em;
+ color: #0891b2; margin-bottom: 5px; text-transform: uppercase;
+}
+.diag-kv {
+ display: flex; justify-content: space-between;
+ padding: 2px 0; font-size: 9px;
+ border-bottom: 1px solid var(--bd);
+}
+.diag-kv:last-child { border-bottom: none; }
+.diag-k { color: var(--mid); }
+.diag-v { color: var(--hi); font-family: monospace; }
+.diag-v.ok { color: var(--green); }
+.diag-v.warn { color: var(--amber); }
+.diag-v.err { color: var(--red); }
+
+#net-grid {
+ display: grid;
+ grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
+ gap: 8px;
+}
+
+/* Signal bars */
+.sig-bars {
+ display: inline-flex; align-items: flex-end; gap: 2px; height: 14px;
+}
+.sig-bar {
+ width: 4px; border-radius: 1px; background: var(--dim);
+}
+.sig-bar.lit { background: var(--cyan); }
+
+/* Node list */
+#node-list-wrap {
+ display: flex; flex-wrap: wrap; gap: 4px;
+ max-height: 160px; overflow-y: auto;
+}
+.node-chip {
+ font-size: 9px; padding: 1px 6px; border-radius: 2px;
+ border: 1px solid var(--bd); background: var(--bg0);
+ color: var(--mid);
+}
+.node-chip.active-node { border-color: var(--bd2); color: var(--base); }
+
+/* ── Preset bar ── */
+#preset-bar {
+ display: flex;
+ align-items: center;
+ gap: 8px;
+ padding: 5px 12px;
+ background: var(--bg1);
+ border-top: 1px solid var(--bd);
+ flex-shrink: 0;
+ flex-wrap: wrap;
+}
+.plbl { font-size: 10px; color: var(--mid); letter-spacing: .08em; }
+
+#preset-select {
+ background: var(--bg2); border: 1px solid var(--bd2); border-radius: 4px;
+ color: #67e8f9; padding: 2px 6px; font-family: monospace; font-size: 10px;
+ cursor: pointer;
+}
+#preset-select:focus { outline: none; }
+
+#preset-name {
+ background: var(--bg2); border: 1px solid var(--bd2); border-radius: 4px;
+ color: var(--hi); padding: 2px 7px; font-family: monospace; font-size: 11px; width: 140px;
+}
+#preset-name:focus { outline: none; border-color: var(--cyan); }
+
+/* ── Footer ── */
+#footer {
+ background: var(--bg1); border-top: 1px solid var(--bd);
+ padding: 3px 12px;
+ display: flex; align-items: center; justify-content: space-between;
+ flex-shrink: 0; font-size: 10px; color: var(--dim);
+}
+
+/* ── Responsive ── */
+@media (max-width: 640px) {
+ .param-row {
+ grid-template-columns: 140px 1fr 70px 44px;
+ gap: 5px;
+ }
+ #diag-grid { grid-template-columns: 1fr 1fr; }
+}
+@media (max-width: 420px) {
+ .param-row {
+ grid-template-columns: 1fr 1fr;
+ grid-template-rows: auto auto;
+ }
+ .param-label { grid-column: 1 / 3; }
+ .param-unit { text-align: left; }
+}
diff --git a/ui/settings_panel.html b/ui/settings_panel.html
new file mode 100644
index 0000000..740c9a8
--- /dev/null
+++ b/ui/settings_panel.html
@@ -0,0 +1,313 @@
+
+
+
+
+
+Saltybot — Settings
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Connect to rosbridge to view diagnostics.
+
+
+
+
+
+
+
+
Waiting for network data…
+
+
+
+
+
+
+
+
Click refresh to list active nodes.
+
+
+
+
+
+
+
+
PRESETS:
+
+
+
+
+
+
+
+
Waiting for /diagnostics…
';
+ return;
+ }
+
+ const cards = [
+ {
+ title: 'Temperature',
+ rows: [
+ { k: 'CPU', v: d.cpuTemp !== null ? d.cpuTemp.toFixed(1) + ' °C' : '—', cls: tempColor(d.cpuTemp) },
+ { k: 'GPU', v: d.gpuTemp !== null ? d.gpuTemp.toFixed(1) + ' °C' : '—', cls: tempColor(d.gpuTemp) },
+ { k: 'Board',v:d.boardTemp !== null ? d.boardTemp.toFixed(1)+' °C':'—', cls:tempColor(d.boardTemp)},
+ { k: 'Motor L', v: d.motorTempL !== null ? d.motorTempL.toFixed(1)+' °C':'—', cls:tempColor(d.motorTempL)},
+ { k: 'Motor R', v: d.motorTempR !== null ? d.motorTempR.toFixed(1)+' °C':'—', cls:tempColor(d.motorTempR)},
+ ],
+ },
+ {
+ title: 'Memory',
+ rows: [
+ { k: 'RAM used', v: d.ramUsed !== null ? d.ramUsed.toFixed(0)+' MB': '—', cls:'' },
+ { k: 'RAM total', v: d.ramTotal !== null ? d.ramTotal.toFixed(0)+' MB': '—', cls:'' },
+ { k: 'RAM %', v: pct(d.ramUsed, d.ramTotal), cls: d.ramUsed/d.ramTotal > 0.85 ? 'warn' : 'ok' },
+ { k: 'GPU mem', v: d.gpuUsed !== null ? d.gpuUsed.toFixed(0)+' MB': '—', cls:'' },
+ { k: 'GPU %', v: pct(d.gpuUsed, d.gpuTotal), cls:'' },
+ ],
+ },
+ {
+ title: 'Storage',
+ rows: [
+ { k: 'Disk used', v: d.diskUsed !== null ? d.diskUsed.toFixed(1)+' GB': '—', cls:'' },
+ { k: 'Disk total', v: d.diskTotal !== null ? d.diskTotal.toFixed(1)+' GB': '—', cls:'' },
+ { k: 'Disk %', v: pct(d.diskUsed, d.diskTotal), cls: d.diskUsed/d.diskTotal > 0.9 ? 'err' : d.diskUsed/d.diskTotal > 0.75 ? 'warn' : 'ok' },
+ ],
+ },
+ {
+ title: 'Updated',
+ rows: [
+ { k: 'Last msg', v: d.lastUpdate ? d.lastUpdate.toLocaleTimeString() : '—', cls:'' },
+ ],
+ },
+ ];
+
+ g.innerHTML = cards.map(c => `
+
+
${c.title}
+ ${c.rows.map(r => `
${r.k}${r.v}
`).join('')}
+
+
WiFi
+
+ RSSI
+
+
+
+
+ Latency
+ ${d.latency !== null ? d.latency.toFixed(0) + ' ms' : '—'}
+
+
+
Services
+
+ MQTT
+
+ ${d.mqttConnected === null ? '—' : d.mqttConnected ? 'Connected' : 'Disconnected'}
+
+
+
+ rosbridge
+ ${ros ? 'Connected' : 'Disconnected'}
+
+
No response
'; return; }
+ const sorted = [...resp.nodes].sort();
+ wrap.innerHTML = sorted.map(n =>
+ `${n}`
+ ).join('');
+ }, () => {
+ document.getElementById('node-list-wrap').innerHTML =
+ 'Service unavailable — ensure rosapi is running
';
+ });
+};
+
+// ── Connection ─────────────────────────────────────────────────────────────
+const $connDot = document.getElementById('conn-dot');
+const $connLabel = document.getElementById('conn-label');
+
+function connect() {
+ const url = document.getElementById('ws-input').value.trim() || 'ws://localhost:9090';
+ if (ros) { stopDiagRefresh(); try { ros.close(); } catch(_){} }
+
+ $connLabel.textContent = 'Connecting…';
+ $connLabel.style.color = '#d97706';
+ $connDot.className = '';
+
+ ros = new ROSLIB.Ros({ url });
+
+ ros.on('connection', () => {
+ $connDot.className = 'connected';
+ $connLabel.style.color = '#22c55e';
+ $connLabel.textContent = 'Connected';
+ localStorage.setItem('settings_ws_url', url);
+ // Auto-start diagnostics if system tab visible
+ const sysPanel = document.getElementById('tab-system');
+ if (sysPanel && sysPanel.classList.contains('active')) startDiagRefresh();
+ });
+
+ ros.on('error', () => {
+ $connDot.className = 'error';
+ $connLabel.style.color = '#ef4444';
+ $connLabel.textContent = 'Error';
+ });
+
+ ros.on('close', () => {
+ $connDot.className = '';
+ $connLabel.style.color = '#6b7280';
+ $connLabel.textContent = 'Disconnected';
+ stopDiagRefresh();
+ ros = null;
+ });
+}
+
+document.getElementById('btn-connect').addEventListener('click', connect);
+
+// ── Init ───────────────────────────────────────────────────────────────────
+buildFields();
+refreshPresetSelect();
+
+const savedUrl = localStorage.getItem('settings_ws_url');
+if (savedUrl) {
+ document.getElementById('ws-input').value = savedUrl;
+ document.getElementById('footer-ws').textContent = savedUrl;
+ connect();
+}