fix(firmware): handle null reset in quota display

When quota hasn't been used yet, the API returns null for reset since
the 5-hour rolling window hasn't started. Now only shows reset time
when it's available, displaying just 'X% used' otherwise.

Author: xavieroyj

src/api/providers/fetchers/firmware.ts

@@ -119,7 +119,7 @@ export async function getFirmwareModels(apiKey?: string): Promise<ModelRecord> {
 
 export interface FirmwareQuotaResponse {
 	used: number // 0 to 1 scale (1 = limit reached)
-	reset: string // ISO timestamp when quota resets
+	reset: string | null // ISO timestamp when quota resets, null if window hasn't started
 }
 
 /**
@@ -160,7 +160,7 @@ export async function getFirmwareQuota(apiKey: string): Promise<FirmwareQuotaRes
 
 			return {
 				used: data.used ?? 0,
-				reset: data.reset ?? new Date().toISOString(),
+				reset: data.reset ?? null,
 			}
 		} finally {
 			clearTimeout(timeoutId)

webview-ui/src/components/settings/providers/FirmwareQuotaDisplay.tsx

@@ -18,16 +18,20 @@ export const FirmwareQuotaDisplay = () => {
 	}
 
 	const percentUsed = (quota.used * 100).toFixed(2)
-	const resetDate = new Date(quota.reset)
-	const now = new Date()
-	const msUntilReset = resetDate.getTime() - now.getTime()
+
+	// Calculate reset time only if reset is provided
+	let resetText = ""
+	if (quota.reset) {
+		const resetDate = new Date(quota.reset)
+		const now = new Date()
+		const msUntilReset = resetDate.getTime() - now.getTime()
+		resetText = ` · resets in ${formatTimeUntilReset(msUntilReset)}`
+	}
 
 	const isAtLimit = quota.used >= 1
 	const isWarning = quota.used >= 0.8
 
-	const statusText = isAtLimit
-		? `Limit reached · resets in ${formatTimeUntilReset(msUntilReset)}`
-		: `${percentUsed}% used · resets in ${formatTimeUntilReset(msUntilReset)}`
+	const statusText = isAtLimit ? `Limit reached${resetText}` : `${percentUsed}% used${resetText}`
 
 	const colorClass = isAtLimit
 		? "text-vscode-errorForeground"

webview-ui/src/components/ui/hooks/useFirmwareQuota.ts

@@ -6,7 +6,7 @@ import { vscode } from "@src/utils/vscode"
 
 export interface FirmwareQuotaInfo {
 	used: number // 0 to 1 scale (1 = limit reached)
-	reset: string // ISO timestamp when quota resets
+	reset: string | null // ISO timestamp when quota resets, null if window hasn't started
 }
 
 export const useFirmwareQuota = () => {