refactor: remove credit cost calculations and related UI elements from canvas node panels

web/src/constant/credits.tsx

@@ -1,25 +0,0 @@
-import type { ComponentProps } from "react";
-import { Zap } from "lucide-react";
-
-export function CreditSymbol({ className, ...props }: ComponentProps<"span">) {
-    return (
-        <span {...props} className={`inline-flex items-center justify-center ${className || ""}`}>
-            <Zap className="size-[1em] fill-current" strokeWidth={2.4} />
-        </span>
-    );
-}
-
-export type ModelCreditCost = {
-    model: string;
-    credits: number;
-};
-
-function modelCreditCost(modelCosts: ModelCreditCost[] | undefined, model: string) {
-    return modelCosts?.find((item) => item.model === model)?.credits || 0;
-}
-
-export function requestCreditCost(options: { channelMode: string; modelCosts?: ModelCreditCost[]; model: string; count?: string | number }) {
-    if (options.channelMode !== "remote") return 0;
-    const count = Math.max(1, Math.floor(Math.abs(Number(options.count)) || 1));
-    return modelCreditCost(options.modelCosts, options.model) * count;
-}