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/unstorage/drivers/utils/node-fs.d.cts

@@ -0,0 +1,11 @@
+import { Dirent, promises as fsPromises } from "node:fs";
+type WriteFileData = Parameters<typeof fsPromises.writeFile>[1];
+export declare function writeFile(path: string, data: WriteFileData, encoding?: BufferEncoding): Promise<void>;
+export declare function readFile(path: string, encoding?: BufferEncoding): Promise<any>;
+export declare function stat(path: string): Promise<any>;
+export declare function unlink(path: string): Promise<any>;
+export declare function readdir(dir: string): Promise<Dirent[]>;
+export declare function ensuredir(dir: string): Promise<void>;
+export declare function readdirRecursive(dir: string, ignore?: (p: string) => boolean, maxDepth?: number): Promise<string[]>;
+export declare function rmRecursive(dir: string): Promise<void>;
+export {};