Add flashing LIVE status indicator to the status bar

Adds a green dot that flashes on/off every second with a "LIVE" label,
giving a visual heartbeat indicator in the bottom status bar.

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

Author: jbingham17

src/App.css

@@ -450,6 +450,34 @@ body {
 .col-time { width: 60px; color: var(--color-text-dim); }
 .col-command { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 
+/* Status Indicator */
+.status-indicator {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+}
+
+.status-dot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  background: var(--color-green);
+  opacity: 0.3;
+  transition: opacity 0.3s ease;
+}
+
+.status-dot.active {
+  opacity: 1;
+  box-shadow: 0 0 8px var(--color-green), 0 0 16px rgba(52, 211, 153, 0.4);
+}
+
+.status-text {
+  color: var(--color-green);
+  font-size: 10px;
+  font-weight: 700;
+  letter-spacing: 2px;
+}
+
 /* Status Bar */
 .status-bar {
   display: flex;

src/components/StatusBar.tsx

@@ -1,3 +1,5 @@
+import { useState, useEffect } from 'react';
+
 interface StatusBarProps {
   filter: string;
   onFilterChange: (filter: string) => void;
@@ -6,6 +8,15 @@ interface StatusBarProps {
 }
 
 export function StatusBar({ filter, onFilterChange, refreshRate, onRefreshRateChange }: StatusBarProps) {
+  const [statusActive, setStatusActive] = useState(true);
+
+  useEffect(() => {
+    const interval = setInterval(() => {
+      setStatusActive((prev) => !prev);
+    }, 1000);
+    return () => clearInterval(interval);
+  }, []);
+
   const shortcuts = [
     { key: 'F1', label: 'Help' },
     { key: 'F2', label: 'Setup' },
@@ -19,6 +30,10 @@ export function StatusBar({ filter, onFilterChange, refreshRate, onRefreshRateCh
 
   return (
     <div className="status-bar">
+      <div className="status-indicator">
+        <span className={`status-dot ${statusActive ? 'active' : ''}`} />
+        <span className="status-text">LIVE</span>
+      </div>
       <div className="filter-section">
         <span className="filter-label">Filter:</span>
         <input