feat: 接入起卦后端流程并完善积分扣减链路

apps/lib/core/network/api_problem_mapper.dart

@@ -11,6 +11,12 @@ String mapApiProblemToMessage(ApiProblem problem, AppLocalizations l10n) {
       return l10n.errorSessionExpired;
     case 'AUTH_SERVICE_UNAVAILABLE':
       return l10n.errorServiceUnavailable;
+    case 'POINTS_INSUFFICIENT_BALANCE':
+      return l10n.toastCoinInsufficient;
+    case 'AGENT_SESSION_RUN_LIMIT_EXCEEDED':
+      return l10n.errorRunLimitExceeded;
+    case 'AGENT_DIVINATION_PAYLOAD_REQUIRED':
+      return l10n.errorDivinationPayloadRequired;
     default:
       break;
   }