fix(console): support DeepSeek weekend pricing

packages/console/app/src/routes/zen/util/handler.ts

@@ -53,6 +53,7 @@ import { createProviderBudgetTracker } from "./providerBudgetTracker"
 import { accumulateUsage, HOT_WORKSPACES } from "./usageBatcher"
 import { Workspace } from "@opencode-ai/console-core/workspace.js"
 import { countryFromRequest, isModelCountryRestricted } from "~/lib/request-country"
+import { isPeakPricing } from "./pricing"
 
 type ZenData = Awaited<ReturnType<typeof ZenData.list>>
 type RetryOptions = {
@@ -1048,9 +1049,8 @@ export async function handler(
     const { inputTokens, outputTokens, reasoningTokens, cacheReadTokens, cacheWrite5mTokens, cacheWrite1hTokens } =
       usageInfo
 
-    const hour = new Date().getUTCHours()
     const modelCost =
-      modelInfo.costPeak && ((hour >= 1 && hour < 4) || (hour >= 6 && hour < 10))
+      modelInfo.costPeak && isPeakPricing(new Date())
         ? modelInfo.costPeak
         : modelInfo.cost200K &&
             inputTokens + (cacheReadTokens ?? 0) + (cacheWrite5mTokens ?? 0) + (cacheWrite1hTokens ?? 0) > 200_000

packages/console/app/src/routes/zen/util/pricing.ts

@@ -0,0 +1,7 @@
+export function isPeakPricing(date: Date) {
+  const hour = date.getUTCHours()
+  // DeepSeek defines weekends in Beijing time, which is fixed at UTC+8.
+  const dayInBeijing = new Date(date.getTime() + 8 * 60 * 60 * 1000).getUTCDay()
+  if (dayInBeijing === 0 || dayInBeijing === 6) return false
+  return (hour >= 1 && hour < 4) || (hour >= 6 && hour < 10)
+}

packages/console/app/test/pricing.test.ts

@@ -0,0 +1,16 @@
+import { describe, expect, test } from "bun:test"
+import { isPeakPricing } from "../src/routes/zen/util/pricing"
+
+describe("isPeakPricing", () => {
+  test.each([
+    ["weekday first window starts", "2026-08-27T01:00:00.000Z", true],
+    ["weekday first window ends", "2026-08-27T04:00:00.000Z", false],
+    ["weekday second window starts", "2026-08-27T06:00:00.000Z", true],
+    ["weekday second window ends", "2026-08-27T10:00:00.000Z", false],
+    ["Saturday in Beijing", "2026-08-29T01:00:00.000Z", false],
+    ["Sunday in Beijing", "2026-08-30T06:00:00.000Z", false],
+    ["Monday in Beijing", "2026-08-31T01:00:00.000Z", true],
+  ] as const)("handles %s", (_name, timestamp, expected) => {
+    expect(isPeakPricing(new Date(timestamp))).toBe(expected)
+  })
+})