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/kleur/package.json

@@ -0,0 +1,35 @@
+{
+  "name": "kleur",
+  "version": "3.0.3",
+  "repository": "lukeed/kleur",
+  "description": "The fastest Node.js library for formatting terminal text with ANSI colors~!",
+  "license": "MIT",
+  "files": [
+    "*.js",
+    "*.d.ts"
+  ],
+  "author": {
+    "name": "Luke Edwards",
+    "email": "luke.edwards05@gmail.com",
+    "url": "lukeed.com"
+  },
+  "scripts": {
+    "test": "tape test/*.js | tap-spec"
+  },
+  "engines": {
+    "node": ">=6"
+  },
+  "keywords": [
+    "ansi",
+    "cli",
+    "color",
+    "colors",
+    "console",
+    "terminal"
+  ],
+  "types": "kleur.d.ts",
+  "devDependencies": {
+    "tap-spec": "^5.0.0",
+    "tape": "^4.9.1"
+  }
+}