feat: increase fireball size and speed

static/main.js

@@ -336,8 +336,8 @@ function processFireball(hands) {
         const d = Math.hypot(c1.x - c2.x, c1.y - c2.y);
         if (d < 0.3) {
             chargeFrames++;
-            // Grow fireball up to 50px radius
-            chargeRadius = Math.min(50, chargeFrames * 1.5);
+            // Grow fireball up to 300px radius to engulf hands in 5 seconds (300 frames)
+            chargeRadius = Math.min(300, chargeFrames * 1.0);
             chargePos = { x: (c1.x + c2.x) / 2 * W, y: (c1.y + c2.y) / 2 * H };
 
             if (chargeFrames > 30 && throwCooldown === 0) {
@@ -345,7 +345,7 @@ function processFireball(hands) {
                 const v2 = getVelocity(c2, palmCenter(prevHands[1]));
                 if (v1.speed > 0.02 && v2.speed > 0.02) {
                     audio.play('fireball');
-                    fireballs.push(new Fireball(chargePos.x, chargePos.y, (v1.vx+v2.vx)*W*0.5, (v1.vy+v2.vy)*H*0.5, 40));
+                    fireballs.push(new Fireball(chargePos.x, chargePos.y, (v1.vx+v2.vx)*W*0.5, (v1.vy+v2.vy)*H*0.5, Math.max(40, chargeRadius)));
                     chargeFrames = 0; throwCooldown = 30; chargeRadius = 0;
                     actionText = "🔥 MASSIVE FIREBALL";
                 }
@@ -360,7 +360,7 @@ function processFireball(hands) {
         const v = getVelocity(c, palmCenter(prevHands[0]));
         if (v.speed > 0.04 && throwCooldown === 0) {
             audio.play('fireball');
-            fireballs.push(new Fireball(c.x*W, c.y*H, v.vx*W, v.vy*H, 20));
+            fireballs.push(new Fireball(c.x*W, c.y*H, v.vx*W, v.vy*H, 60));
             throwCooldown = 20;
             actionText = "🔥 THROW";
         }