feat: integrate Sensei Spook mascot in 4 stances, speech bubbles, and style updates

lib/ai/circuit-breaker.ts

@@ -0,0 +1,18 @@
+// Provider cooldown is completely disabled: transient failures or safety rejections
+// will never lock out the API for subsequent requests.
+export function isProviderAvailable(_providerName: string): boolean {
+  return true;
+}
+
+export function triggerCooldown(
+  _providerName: string,
+  _durationMinutes: number,
+  _reason: string
+): void {
+  // No-op: Cooldown disabled
+}
+
+export function resetProvider(_providerName: string): void {
+  // No-op
+}
+