fix(ai): honour the window status the endpoint reports as exhausted

The parser kept `current_*_status` but only read it to detect a not-in-plan
bucket, so an exhausted window (`status: 2`) that omits its optional remaining
percentage was dropped from the report entirely, and one that keeps a stale
percentage rendered as healthy quota. The status now outranks the percentage:
status 2 pins the window to a fully used fraction, which `usageStatus` maps to
`exhausted`, and the window survives with no percentage at all.

packages/ai/src/usage/minimax-code.ts

@@ -14,6 +14,7 @@ const INTL_BASE_URL = "https://api.minimax.io";
 const REMAINS_PATH = "/v1/token_plan/remains";
 const HOUR_MS = 60 * 60 * 1000;
 /** `current_*_status` enum reported per window: 1 normal, 2 exhausted, 3 unlimited. */
+const STATUS_EXHAUSTED = 2;
 const STATUS_UNLIMITED = 3;
 /**
  * The plan-wide token quota every chat model draws from. It is a quota category,
@@ -126,11 +127,14 @@ function buildLimit(args: {
 	durationMs?: number;
 	resetsAt?: number;
 	usedFraction: number | undefined;
+	windowStatus?: number;
 	usageCount?: number;
 	totalCount?: number;
 	accountId?: string;
 }): UsageLimit | undefined {
-	const { usedFraction } = args;
+	// The endpoint's own status outranks the percentage: an exhausted window may
+	// omit it, or keep a stale one that would otherwise render as healthy quota.
+	const usedFraction = args.windowStatus === STATUS_EXHAUSTED ? 1 : args.usedFraction;
 	if (usedFraction === undefined) return undefined;
 	const totalCount = args.totalCount;
 	return {
@@ -181,6 +185,7 @@ function buildBucketLimits(provider: string, bucket: TokenPlanBucket, accountId:
 			durationMs: intervalDuration,
 			resetsAt: bucket.intervalEnd,
 			usedFraction: usedFractionFromRemainingPercent(bucket.intervalRemainingPercent),
+			windowStatus: bucket.intervalStatus,
 			usageCount: bucket.intervalUsageCount,
 			totalCount: bucket.intervalTotalCount,
 			accountId,
@@ -193,6 +198,7 @@ function buildBucketLimits(provider: string, bucket: TokenPlanBucket, accountId:
 			durationMs: weeklyDuration,
 			resetsAt: bucket.weeklyEnd,
 			usedFraction: usedFractionFromRemainingPercent(bucket.weeklyRemainingPercent),
+			windowStatus: bucket.weeklyStatus,
 			usageCount: bucket.weeklyUsageCount,
 			totalCount: bucket.weeklyTotalCount,
 			accountId,

packages/ai/test/minimax-token-plan-usage.test.ts

@@ -249,6 +249,26 @@ describe("MiniMax Token Plan usage", () => {
 		expect(await minimaxCodeUsageProvider.fetchUsage(params("minimax-code"), { fetch: fetchMock })).toBeNull();
 	});
 
+	test("reports a window the endpoint marks exhausted, percentage or not", async () => {
+		const noPercentage: RemainsBucket = {
+			...generalBucket(),
+			current_interval_status: 2,
+			current_interval_remaining_percent: undefined,
+		};
+		const stalePercentage: RemainsBucket = { ...generalBucket(), current_interval_status: 2 };
+
+		for (const bucket of [noPercentage, stalePercentage]) {
+			const fetchMock: FetchImpl = () => Promise.resolve(Response.json(payloadOf(bucket)));
+
+			const report = await minimaxCodeUsageProvider.fetchUsage(params("minimax-code"), { fetch: fetchMock });
+
+			const interval = report?.limits.find(limit => limit.id === "general:4h");
+			expect(interval?.status).toBe("exhausted");
+			expect(interval?.amount).toMatchObject({ usedFraction: 1, remainingFraction: 0 });
+			expect(report?.limits.find(limit => limit.id === "general:7d")?.status).toBe("ok");
+		}
+	});
+
 	test("keeps a model that is not in the plan out of the reported quota", async () => {
 		const fetchMock: FetchImpl = () =>
 			Promise.resolve(Response.json(payloadOf(generalBucket(), notInPlanBucket("video"))));