feat(ui): add WiFi/network info to self-test

Add informational network status check at the beginning of self-test:
- Shows connection mode (Hotspot, WiFi, or Ethernet)
- Displays SSID/connection name
- Shows IP address and hostname.local
- Add wifi_status endpoint in launcher.php using nmcli

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

html/saraR4.html

@@ -375,6 +375,15 @@
                 </div>
 
                 <div class="list-group" id="selftest_results">
+                  <!-- Info: WiFi Status -->
+                  <div class="list-group-item d-flex justify-content-between align-items-center" id="test_wifi">
+                    <div>
+                      <strong>WiFi / Network</strong>
+                      <div class="small text-muted" id="test_wifi_detail">Waiting...</div>
+                    </div>
+                    <span id="test_wifi_status" class="badge bg-secondary">Pending</span>
+                  </div>
+
                   <!-- Test 1: Modem Connection -->
                   <div class="list-group-item d-flex justify-content-between align-items-center" id="test_modem">
                     <div>
@@ -1511,6 +1520,10 @@ function resetSelfTestUI() {
     </div>`;
 
   // Reset test items
+  document.getElementById('test_wifi_status').className = 'badge bg-secondary';
+  document.getElementById('test_wifi_status').textContent = 'Pending';
+  document.getElementById('test_wifi_detail').textContent = 'Waiting...';
+
   document.getElementById('test_modem_status').className = 'badge bg-secondary';
   document.getElementById('test_modem_status').textContent = 'Pending';
   document.getElementById('test_modem_detail').textContent = 'Waiting...';
@@ -1605,6 +1618,62 @@ async function selfTestSequence() {
   let testsFailed = 0;
 
   try {
+    // Step 0: Check WiFi / Network status (informational, no pass/fail)
+    document.getElementById('selftest_status').innerHTML = `
+      <div class="d-flex align-items-center text-primary">
+        <div class="spinner-border spinner-border-sm me-2" role="status"></div>
+        <span>Checking network status...</span>
+      </div>`;
+
+    updateTestStatus('wifi', 'Checking...', 'Getting network info...', 'bg-info');
+
+    try {
+      const wifiResponse = await new Promise((resolve, reject) => {
+        $.ajax({
+          url: 'launcher.php?type=wifi_status',
+          dataType: 'json',
+          method: 'GET',
+          success: function(data) {
+            addSelfTestLog(`WiFi status: ${JSON.stringify(data)}`);
+            resolve(data);
+          },
+          error: function(xhr, status, error) {
+            addSelfTestLog(`WiFi status error: ${error}`);
+            reject(new Error(error));
+          }
+        });
+      });
+
+      if (wifiResponse.connected) {
+        let modeIcon = '';
+        let modeLabel = '';
+        let badgeClass = 'bg-info';
+
+        if (wifiResponse.mode === 'hotspot') {
+          modeIcon = '📡';
+          modeLabel = 'Hotspot';
+          badgeClass = 'bg-warning text-dark';
+        } else if (wifiResponse.mode === 'wifi') {
+          modeIcon = '📶';
+          modeLabel = 'WiFi';
+          badgeClass = 'bg-info';
+        } else if (wifiResponse.mode === 'ethernet') {
+          modeIcon = '🔌';
+          modeLabel = 'Ethernet';
+          badgeClass = 'bg-info';
+        }
+
+        const detailText = `${wifiResponse.ssid} | ${wifiResponse.ip} | ${wifiResponse.hostname}.local`;
+        updateTestStatus('wifi', modeLabel, detailText, badgeClass);
+      } else {
+        updateTestStatus('wifi', 'Disconnected', 'No network connection', 'bg-secondary');
+      }
+    } catch (error) {
+      updateTestStatus('wifi', 'Error', error.message, 'bg-secondary');
+    }
+
+    await delay(500);
+
     // Step 1: Enable config mode
     document.getElementById('selftest_status').innerHTML = `
       <div class="d-flex align-items-center text-primary">