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/v4/classic/iso.js

@@ -0,0 +1,30 @@
+import * as core from "../core/index.js";
+import * as schemas from "./schemas.js";
+export const ZodISODateTime = /*@__PURE__*/ core.$constructor("ZodISODateTime", (inst, def) => {
+    core.$ZodISODateTime.init(inst, def);
+    schemas.ZodStringFormat.init(inst, def);
+});
+export function datetime(params) {
+    return core._isoDateTime(ZodISODateTime, params);
+}
+export const ZodISODate = /*@__PURE__*/ core.$constructor("ZodISODate", (inst, def) => {
+    core.$ZodISODate.init(inst, def);
+    schemas.ZodStringFormat.init(inst, def);
+});
+export function date(params) {
+    return core._isoDate(ZodISODate, params);
+}
+export const ZodISOTime = /*@__PURE__*/ core.$constructor("ZodISOTime", (inst, def) => {
+    core.$ZodISOTime.init(inst, def);
+    schemas.ZodStringFormat.init(inst, def);
+});
+export function time(params) {
+    return core._isoTime(ZodISOTime, params);
+}
+export const ZodISODuration = /*@__PURE__*/ core.$constructor("ZodISODuration", (inst, def) => {
+    core.$ZodISODuration.init(inst, def);
+    schemas.ZodStringFormat.init(inst, def);
+});
+export function duration(params) {
+    return core._isoDuration(ZodISODuration, params);
+}