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/renderer-inventory.js

@@ -38,7 +38,7 @@ function drawInventoryOverlay() {
 
   ctx.save();
 
-  const titleSuffix = equipMode ? `- SLOT ${_pickerSlot + 1}` : '- BAG';
+  const titleSuffix = equipMode ? `- SLOT ${_pickerSlot + 1}` : '';
   ctx.font = '11px Orbitron, "Share Tech Mono", monospace';
   ctx.letterSpacing = '3px';
   ctx.textAlign = 'left';
@@ -50,7 +50,7 @@ function drawInventoryOverlay() {
   const invCount = (G.weaponInventory || []).length;
   ctx.font = '10px "Share Tech Mono", monospace';
   ctx.fillStyle = '#3a6080';
-  ctx.fillText(invCount + ' in bag', _PK_LIST_X + 270, _PK_Y + _PK_PAD + 1);
+  ctx.fillText(invCount + ' in inventory', _PK_LIST_X + 270, _PK_Y + _PK_PAD + 1);
 
   ctx.strokeStyle = '#1a3048';
   ctx.lineWidth = 1;
@@ -177,7 +177,7 @@ function drawInventoryOverlay() {
   for (const w of (G.weaponInventory || [])) {
     const wRef = w;
     drawCard(w, getWeaponDef(w), {
-      location: 'BAG',
+      location: 'INVENTORY',
       source: { type: 'bag' },
       action: equipMode
         ? () => { equipWeaponInstanceToSlot(_pickerSlot, wRef.instanceId); }