fix: add workshop props — bookshelf, candles, crystal ball glow (#429)

Co-authored-by: Kimi Agent <kimi@timmy.local>
Co-committed-by: Kimi Agent <kimi@timmy.local>

static/world/index.html

@@ -55,7 +55,7 @@
         camera.position.set(0, 2.0, 4.5);
 
         // --- Build scene elements ---
-        const { crystalBall, fireLight } = buildRoom(scene);
+        const { crystalBall, crystalLight, fireLight, candleLights } = buildRoom(scene);
         const wizard = createWizard();
         scene.add(wizard.group);
         const familiar = createFamiliar();
@@ -93,13 +93,24 @@
             familiar.update(dt);
             controls.update();
 
-            // Crystal ball subtle rotation
+            // Crystal ball subtle rotation + pulsing glow
             crystalBall.rotation.y += dt * 0.3;
+            const pulse = 0.3 + Math.sin(Date.now() * 0.002) * 0.15;
+            crystalLight.intensity = pulse;
+            crystalBall.material.emissiveIntensity = pulse * 0.5;
 
             // Fireplace flicker
             fireLight.intensity = 1.2 + Math.sin(Date.now() * 0.005) * 0.15
                 + Math.sin(Date.now() * 0.013) * 0.1;
 
+            // Candle flicker — each offset slightly for variety
+            const now = Date.now();
+            for (let i = 0; i < candleLights.length; i++) {
+                candleLights[i].intensity = 0.4
+                    + Math.sin(now * 0.007 + i * 2.1) * 0.1
+                    + Math.sin(now * 0.019 + i * 1.3) * 0.05;
+            }
+
             renderer.render(scene, camera);
         }
         animate();