docs: switch to ESP32-S3 and add logging server

- Update HARDWARE.md to recommend ESP32-S3 over RP2040 to support Wi-Fi
  logging capabilities and better GPIO availability.
- Initialize a Node.js Express server to receive and store test results
  from the hardware device.
- Add a web-based dashboard to visualize HDMI pin status history, including
  basic pass/fail logic for voltage drops.

server/index.js

@@ -0,0 +1,36 @@
+const express = require('express');
+const app = express();
+const port = 3000;
+
+app.use(express.json());
+app.use(express.static('public'));
+
+let testResults = [];
+
+// Endpoint for the HDMI Tester to upload results
+app.post('/api/results', (req, res) => {
+    const { deviceId, mode, results } = req.body;
+    const testId = testResults.length + 1;
+    const timestamp = new Date().toISOString();
+    
+    const newEntry = {
+        testId,
+        deviceId,
+        mode,
+        timestamp,
+        results
+    };
+    
+    testResults.push(newEntry);
+    console.log(`Received test #${testId} from ${deviceId}`);
+    res.status(201).json({ status: 'success', testId });
+});
+
+// Endpoint for the Web Interface to get all results
+app.get('/api/results', (req, res) => {
+    res.json(testResults);
+});
+
+app.listen(port, () => {
+    console.log(`HDMI Tester Server running at http://localhost:${port}`);
+});