fix: client now appends instead of overwrites response data

- Changed displayResponse to use += instead of = for appending
- Added clear response content on new connection for fresh start
- Now all weather data sections will be visible: connection, location, current weather, forecast, alerts
- Each SSE message will append to the display instead of overwriting

Author: T-rav

examples/sse_client_real.html

@@ -253,6 +253,10 @@ <h2>📝 Real-Time Logs</h2>
                     document.getElementById('connectBtn').disabled = true;
                     document.getElementById('disconnectBtn').disabled = false;
 
+                    // Clear previous response data for fresh start
+                    const responseContent = document.getElementById('responseContent');
+                    responseContent.textContent = '';
+
                     const connectionInfo = document.getElementById('connectionInfo');
                     const connectionDetails = document.getElementById('connectionDetails');
                     connectionInfo.style.display = 'block';
@@ -362,10 +366,12 @@ <h2>📝 Real-Time Logs</h2>
             try {
                 // Try to parse and pretty-print JSON
                 const parsed = typeof data === 'string' ? JSON.parse(data) : data;
-                responseContent.textContent = `=== ${title} ===\n${JSON.stringify(parsed, null, 2)}`;
+                const newContent = `=== ${title} ===\n${JSON.stringify(parsed, null, 2)}\n\n`;
+                responseContent.textContent += newContent;  // APPEND instead of overwrite
             } catch (e) {
                 // If not JSON, display as-is
-                responseContent.textContent = `=== ${title} ===\n${data}`;
+                const newContent = `=== ${title} ===\n${data}\n\n`;
+                responseContent.textContent += newContent;  // APPEND instead of overwrite
             }
 
             responseDisplay.style.display = 'block';