Add Kiosk category, re-categorize 207 assets, fix .gitignore

- New Kiosk category (🏪, purple) for 365 Retail Markets, Panoptyc, Intuitivo,
  Smart Market, Micro-Market — 1,100 assets moved from Equipment/Other
- CRANE (114) → Equipment (was wrongly 'Other')
- Vendo, Royal, DN, DIXIE NARCO (52) → Bev (beverage vending machines)
- USI (2) → Snack
- Cafection Digi-cup, Echostream, Purelogix, Avalon (4) → Bev
- CoolServ, Cold Snap, KoolTek (3) → Appliances (cooling/refrigeration)
- De Jong Duke, AC, Impressions, Lektro-Vend (11) → Equipment
- Remaining 'Other' reduced from 221 to 14 genuine unknowns
- Zero unmapped categories — Category Health clean

static/index.html

@@ -3147,6 +3147,7 @@
       'Food':        { icon: '🍔', color: '#e67e22' },
       'Equipment':   { icon: '🔧', color: '#2c3e50' },
       'Appliances':  { icon: '🔌', color: '#3b82f6' },
+      'Kiosk':       { icon: '🏪', color: '#7c3aed' },
       'Other':       { icon: '📦', color: '#6b7280' },
     };
     const CATEGORY_UNMAPPED_ICON = '❓';