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.js

@@ -14,7 +14,15 @@ function render() {
   // Blit cached background — O(1)
   ctx.drawImage(_bgCanvas, 0, 0);
 
-  drawArenaRangeLine(cx, cy);   // faint dashed ring at tower range
+  // World layer — apply camera zoom centred on tower
+  const _zoom = G.camera?.zoom ?? 1.0;
+  ctx.save();
+  ctx.translate(cx, cy);
+  ctx.scale(_zoom, _zoom);
+  ctx.translate(-cx, -cy);
+
+  drawGrid(cx, cy);
+  drawWeaponRanges(cx, cy);     // alt-hold: per-weapon range rings
   drawPortals();
   drawAoeZones();
   drawEnemyTrails();
@@ -22,14 +30,18 @@ function render() {
   drawProjectiles();
   drawChainArcs();
   drawBeams();
-  drawFog(cx, cy);              // dim beyond tower range
   drawTower(cx, cy);
   drawShield(cx, cy);
   drawParticles();
   drawFloaters();
-  drawArenaMask(W, H, cx, cy); // solid dark outside arena circle
-  drawArenaRing(cx, cy);        // glowing border ring
+  ctx.restore(); // end world layer
+
+  // Mask/ring/streak operate in screen space — drawn AFTER world transform
+  drawArenaMask(W, H, cx, cy, _zoom);
+  drawArenaRing(cx, cy, _zoom);
   drawStreak(cx, cy);
+
+  // UI layer — no camera transform
   clearHitRegions();
   _mountDropZones.length = 0;
   _bagDropZones.length   = 0;
@@ -38,9 +50,18 @@ function render() {
   drawBrokeWarning();
   drawSidePanel();
   drawInventoryOverlay();
-  drawShopOverlay();
+  drawCommandOverlay();
+  drawArmoryOverlay();
+  drawWeaponDetailOverlay();
+  checkSellHold();
+  checkPrestigeHold();
+  drawThreatPanel();
+  drawPrestigeConfirm();
   if (G.gameOver) drawGameOverPanel();
   drawPauseOverlay();
+
   drawMountInteraction(cx, cy);
-  drawDragGhost();
+
+  drawDragGhost();   // follows cursor — screen space, no zoom
+  drawTooltips();
 }