Build [v0.2.0]

Major UI/UX optimization release:
- Removed all bold fonts throughout app (291 replacements) - font-normal standard
- Full-app spacing optimization: Scanner, Inventory, Logs, Admin, Login pages
- Fixed mobile portrait viewport overflow issues (~136px gained on mobile)
- Updated AI_RULES.md Section 3: NO BOLD FONTS requirement
- Increased subtitle/label font sizes for readability
- Mobile-first responsive breakpoints implemented

Test results: 291/291 frontend, 41/41 backend, zero TypeScript errors
Version bumped: 0.1.0 → 0.2.0

frontend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "inventory-pwa",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "private": true,
   "scripts": {
     "dev": "next dev",