fix: Fix product page syntax errors

1. Remove duplicate/broken code in product tables section
2. Fix PostCSS config for Tailwind 4
3. Add @tailwindcss/postcss dependency
4. Remove --production flag from Dockerfile (sharp required)

All fixes enable successful Docker build with favicon working.

node_modules/zod-to-json-schema/dist/cjs/getRelativePath.js

@@ -0,0 +1,12 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getRelativePath = void 0;
+const getRelativePath = (pathA, pathB) => {
+    let i = 0;
+    for (; i < pathA.length && i < pathB.length; i++) {
+        if (pathA[i] !== pathB[i])
+            break;
+    }
+    return [(pathA.length - i).toString(), ...pathB.slice(i)].join("/");
+};
+exports.getRelativePath = getRelativePath;