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/p-queue/dist/lower-bound.js

@@ -0,0 +1,18 @@
+// Port of lower_bound from https://en.cppreference.com/w/cpp/algorithm/lower_bound
+// Used to compute insertion index to keep queue sorted after insertion
+export default function lowerBound(array, value, comparator) {
+    let first = 0;
+    let count = array.length;
+    while (count > 0) {
+        const step = Math.trunc(count / 2);
+        let it = first + step;
+        if (comparator(array[it], value) <= 0) {
+            first = ++it;
+            count -= step + 1;
+        }
+        else {
+            count = step;
+        }
+    }
+    return first;
+}