feat: show available reset credits

backend/internal/app/api.go

@@ -8,6 +8,7 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	"sort"
 	"strconv"
 	"strings"
 	"time"
@@ -229,6 +230,7 @@ func (a *App) dashboardAPI(w http.ResponseWriter, r *http.Request) {
 func publicDashboard(d Dashboard) Dashboard {
 	d.Account.Email = nil
 	d.Account.AuthMode = nil
+	d.ResetCredits = nil
 	d.LastError = ""
 	return d
 }
@@ -489,10 +491,12 @@ func (a *App) syncAccount(ctx context.Context, id int64) error {
 		d.Account.AuthMode = &ar.Account.Type
 	}
 	var lr struct {
-		RateLimits *rawLimit           `json:"rateLimits"`
-		By         map[string]rawLimit `json:"rateLimitsByLimitId"`
+		RateLimits   *rawLimit           `json:"rateLimits"`
+		By           map[string]rawLimit `json:"rateLimitsByLimitId"`
+		ResetCredits *rawResetCredits    `json:"rateLimitResetCredits"`
 	}
 	if e := rt.client.Call(ctx, "account/rateLimits/read", map[string]any{}, &lr); e == nil {
+		d.ResetCredits = normalizeResetCredits(lr.ResetCredits)
 		if len(lr.By) > 0 {
 			for _, x := range lr.By {
 				d.Limits = append(d.Limits, flattenLimit(x)...)
@@ -605,6 +609,35 @@ type rawLimit struct {
 	Secondary *LimitWindow `json:"secondary"`
 }
 
+type rawResetCredits struct {
+	AvailableCount int              `json:"availableCount"`
+	Credits        []rawResetCredit `json:"credits"`
+}
+
+type rawResetCredit struct {
+	ExpiresAt *int64 `json:"expiresAt"`
+}
+
+func normalizeResetCredits(raw *rawResetCredits) *ResetCreditsSummary {
+	if raw == nil || raw.AvailableCount <= 0 {
+		return nil
+	}
+	expiresAt := make([]int64, 0, len(raw.Credits))
+	for _, credit := range raw.Credits {
+		if credit.ExpiresAt != nil && *credit.ExpiresAt > 0 {
+			expiresAt = append(expiresAt, *credit.ExpiresAt)
+		}
+	}
+	sort.Slice(expiresAt, func(i, j int) bool { return expiresAt[i] < expiresAt[j] })
+	uniqueExpiresAt := expiresAt[:0]
+	for _, value := range expiresAt {
+		if len(uniqueExpiresAt) == 0 || uniqueExpiresAt[len(uniqueExpiresAt)-1] != value {
+			uniqueExpiresAt = append(uniqueExpiresAt, value)
+		}
+	}
+	return &ResetCreditsSummary{AvailableCount: raw.AvailableCount, ExpiresAt: uniqueExpiresAt}
+}
+
 func currentTokenCycle(limits []LimitBucket, usage []UsagePoint, fetchedAt int64) *TokenCycle {
 	current := LimitBucket{}
 	found := false