first commit

public/js/tools/timestamp.js

@@ -0,0 +1,18 @@
+// ═══════════════════════════════════════════════════════
+// Timestamp
+// ═══════════════════════════════════════════════════════
+async function convertTimestamp() {
+  const v = document.getElementById('tsInput').value.trim();
+  const d = await apiPost('/api/timestamp', { value: v || 'now' });
+  if (d.success) {
+    document.getElementById('tsResults').innerHTML = [
+      ['Unix (s)', d.unix], ['Unix (ms)', d.unixMs], ['ISO 8601', d.iso],
+      ['UTC', d.utc], ['Local', d.local], ['Relative', d.relative]
+    ].map(([l, v]) => `<div class="result-row"><div class="label">${l}</div><div class="value" onclick="copyText(this.textContent)">${v}</div></div>`).join('');
+    setStatus('tsStatus','success','Converted ✓');
+  } else setStatus('tsStatus','error', d.error);
+}
+
+// Keyboard shortcut
+document.getElementById('tsInput').addEventListener('keydown', e => { if(e.key==='Enter') convertTimestamp(); });
+