fix(ui): stabilize token rate calculation in status component

Calculate token rate once per timing session instead of recalculating
on every interval tick. This prevents the simulated token count from
jumping erratically due to random value changes.

Also remove noisy console warning in websocket utility that was
cluttering development logs without providing actionable information.

src/components/ClaudeStatus.jsx

@@ -15,11 +15,14 @@ function ClaudeStatus({ status, onAbort, isLoading, provider = 'claude' }) {
     }
 
     const startTime = Date.now();
+    // Calculate random token rate once (30-50 tokens per second)
+    const tokenRate = 30 + Math.random() * 20;
+
     const timer = setInterval(() => {
       const elapsed = Math.floor((Date.now() - startTime) / 1000);
       setElapsedTime(elapsed);
-      // Simulate token count increasing over time (roughly 30-50 tokens per second)
-      setFakeTokens(Math.floor(elapsed * (30 + Math.random() * 20)));
+      // Simulate token count increasing over time
+      setFakeTokens(Math.floor(elapsed * tokenRate));
     }, 1000);
 
     return () => clearInterval(timer);