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/fontkitten/package.json

@@ -0,0 +1,41 @@
+{
+  "name": "fontkitten",
+  "version": "1.0.2",
+  "description": "A lightweight font data library — fontkit’s little sibling",
+  "keywords": [
+    "opentype",
+    "font",
+    "typography",
+    "emoji",
+    "glyph"
+  ],
+  "type": "module",
+  "exports": {
+    ".": "./dist/index.js"
+  },
+  "engines": {
+    "node": ">=20"
+  },
+  "files": [
+    "dist"
+  ],
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/delucis/fontkitten.git",
+    "directory": "packages/fontkitten"
+  },
+  "dependencies": {
+    "tiny-inflate": "^1.0.3"
+  },
+  "devDependencies": {
+    "@fontkitten/restructure": "^0.0.7",
+    "@types/node": "^24.10.7",
+    "tsdown": "^0.19.0"
+  },
+  "scripts": {
+    "test": "node --test",
+    "test:bun": "bun test ./test/*.js",
+    "build": "tsdown --dts --no-fixed-extension"
+  }
+}