Add freshness bar, enhance overlays and renderers

- Add enemy freshness tracking (novelty bonus for repeated deploys)
- Add freshness bar to sidepanel enemy cards with penalty indicator
- Major overhaul of renderer-overlays.js (790+ lines for UI polish)
- Enhanced combat log, shop overlays, and inventory UI
- Improved weapon/upgrade display with partial ownership colors
- Added element icons and weakness/resistance indicators to cards
- Enhanced radial menu and tooltip system
- Add "stale/%" penalty text when freshness depleted
- Update play link to ffazeshift.net in index.html

js/dev-console.js

@@ -158,7 +158,8 @@ const DEV_MODE = true;
         const ids = ['grunt','runner','brute','phantom'];
         ids.forEach(id => {
           const def = ENEMY_DEFS.find(d => d.id === id);
-          if (def) openPortal(def, qty, 0);
+          if (!def) return;
+          for (let i = 0; i < qty; i++) openPortal(def, 1, 0);
         });
         devLog(`Spawned wave: ${ids.join(', ')} ×${qty} each`, 'ok');
       }