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/priority-queue.d.ts

@@ -0,0 +1,13 @@
+import { type Queue, type RunFunction } from './queue.js';
+import { type QueueAddOptions } from './options.js';
+export type PriorityQueueOptions = {
+    priority?: number;
+} & QueueAddOptions;
+export default class PriorityQueue implements Queue<RunFunction, PriorityQueueOptions> {
+    #private;
+    enqueue(run: RunFunction, options?: Partial<PriorityQueueOptions>): void;
+    setPriority(id: string, priority: number): void;
+    dequeue(): RunFunction | undefined;
+    filter(options: Readonly<Partial<PriorityQueueOptions>>): RunFunction[];
+    get size(): number;
+}