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/astro/dist/cli/info/infra/styled-debug-info-formatter.js

@@ -0,0 +1,29 @@
+class StyledDebugInfoFormatter {
+  #textStyler;
+  #maxPadding = 25;
+  constructor({
+    textStyler
+  }) {
+    this.#textStyler = textStyler;
+  }
+  format(info) {
+    let output = "";
+    for (const [label, value] of info) {
+      const padding = this.#maxPadding - label.length;
+      const [first, ...rest] = Array.isArray(value) ? value : [value];
+      let richtext = `
+${this.#textStyler.bold(label)}${" ".repeat(padding)}${this.#textStyler.green(first)}`;
+      if (rest.length > 0) {
+        for (const entry of rest) {
+          richtext += `
+${" ".repeat(this.#maxPadding)}${this.#textStyler.green(entry)}`;
+        }
+      }
+      output += richtext;
+    }
+    return output.trim();
+  }
+}
+export {
+  StyledDebugInfoFormatter
+};