Refactor: Remove circuit breaker system

src/components/ui/network-status-banner.tsx

@@ -1,83 +0,0 @@
-import { useEffect, useState } from 'react';
-import { XCircle, Loader2 } from 'lucide-react';
-import { Alert, AlertDescription, AlertTitle } from '@/components/ui/alert';
-import { useCircuitBreakerStatus } from '@/hooks/useCircuitBreakerStatus';
-import { CircuitState } from '@/lib/circuitBreaker';
-import { cn } from '@/lib/utils';
-
-export function NetworkStatusBanner() {
-  const { state, failureCount, isOpen, isHalfOpen } = useCircuitBreakerStatus();
-  const [countdown, setCountdown] = useState(60);
-
-  // Countdown for next retry attempt (when OPEN)
-  useEffect(() => {
-    if (!isOpen) return;
-
-    setCountdown(60); // Reset timeout from circuit breaker config
-    const interval = setInterval(() => {
-      setCountdown(prev => Math.max(0, prev - 1));
-    }, 1000);
-
-    return () => clearInterval(interval);
-  }, [isOpen]);
-
-  // Don't show if circuit is closed
-  if (state === CircuitState.CLOSED) return null;
-
-  // OPEN state - critical error
-  if (isOpen) {
-    return (
-      <Alert 
-        role="alert"
-        aria-live="assertive"
-        aria-atomic="true"
-        variant="destructive" 
-        className={cn(
-          "rounded-none border-x-0 border-t-0",
-          "animate-in slide-in-from-top-4 duration-300",
-          "bg-destructive/90 backdrop-blur-sm"
-        )}
-      >
-        <XCircle className="h-5 w-5 animate-pulse" />
-        <AlertTitle className="font-semibold text-lg">
-          Database Unavailable
-        </AlertTitle>
-        <AlertDescription className="text-sm mt-1">
-          Our systems detected a service outage. <strong>Data and authentication are temporarily unavailable.</strong>
-          {' '}Retrying automatically... (next attempt in {countdown}s)
-          {failureCount > 0 && (
-            <span className="block mt-1 text-xs opacity-80">
-              {failureCount} failed connection attempts detected
-            </span>
-          )}
-        </AlertDescription>
-      </Alert>
-    );
-  }
-
-  // HALF_OPEN state - testing recovery
-  if (isHalfOpen) {
-    return (
-      <Alert 
-        role="alert"
-        aria-live="polite"
-        aria-atomic="true"
-        className={cn(
-          "rounded-none border-x-0 border-t-0",
-          "animate-in slide-in-from-top-4 duration-300",
-          "bg-amber-500/20 dark:bg-amber-500/30 border-amber-500"
-        )}
-      >
-        <Loader2 className="h-5 w-5 animate-spin text-amber-600 dark:text-amber-400" />
-        <AlertTitle className="font-semibold text-amber-900 dark:text-amber-100">
-          Connection Unstable
-        </AlertTitle>
-        <AlertDescription className="text-sm text-amber-800 dark:text-amber-200 mt-1">
-          Testing database connection... Some features may be slow or temporarily unavailable.
-        </AlertDescription>
-      </Alert>
-    );
-  }
-
-  return null;
-}