feat: Initialize Svelte frontend with Vite, Tailwind CSS, single-file build, and a gzip script for ESP32 deployment.

Provider/frontend/scripts/gzip.js

@@ -0,0 +1,26 @@
+/**
+ * Gzip script for ESP32 deployment.
+ * Compresses dist/index.html -> dist/index.html.gz
+ * Uses Node.js built-in zlib (no extra dependencies).
+ */
+
+import { readFileSync, writeFileSync } from 'fs';
+import { gzipSync } from 'zlib';
+import { resolve, dirname } from 'path';
+import { fileURLToPath } from 'url';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const inputPath = resolve(__dirname, '..', 'dist', 'index.html');
+const outputPath = resolve(__dirname, '..', 'dist', 'index.html.gz');
+
+const input = readFileSync(inputPath);
+const compressed = gzipSync(input, { level: 9 });
+
+writeFileSync(outputPath, compressed);
+
+const inputKB = (input.length / 1024).toFixed(1);
+const outputKB = (compressed.length / 1024).toFixed(1);
+const ratio = ((1 - compressed.length / input.length) * 100).toFixed(0);
+
+console.log(`Gzip: ${inputKB} kB -> ${outputKB} kB (${ratio}% reduction)`);
+console.log(`Output: dist/index.html.gz`);