tune: bring focal center dot slightly closer

Author: b

src/components/CircuitBackground.vue

@@ -53,7 +53,7 @@ const FLOW_ACCEL_PER_SECOND = 0.018;
 const FLOW_SPEED_MAX = 15.5;
 const FLOW_DEPTH_SPAN = 320;
 const FLOW_NEAR_LIMIT = 48;
-const CENTER_DEPTH = -92;
+const CENTER_DEPTH = -74;
 const CIRCUIT_COUNT = 68;
 const PULSE_SPEED_BASE = 0.032;
 const PULSE_SPEED_FLOW_GAIN = 0.0022;