fix: correct daily work/break calculations and league back button

- ComputeDailyTotals: only assume working from dayStart when first event
  is 'out' (cross-midnight session); otherwise start idle. Fixes inflated
  work/break counts in reports, status, export, burnout, salary, and RPG.
- leagueToggleCallback: add settings back keyboard when RPG is disabled.
- webhook: add graceful HTTP server shutdown on context cancellation.

cmd/bot/webhook.go

@@ -5,6 +5,7 @@ import (
 	"log/slog"
 	"net/http"
 	"os"
+	"time"
 
 	tgbot "github.com/go-telegram/bot"
 
@@ -26,10 +27,25 @@ func startWebhook(ctx context.Context, b *tgbot.Bot, h *handler.Handler, webhook
 	tlsCert := os.Getenv("BOT_TLS_CERT")
 	tlsKey := os.Getenv("BOT_TLS_KEY")
 
+	server := &http.Server{
+		Addr:    listenAddr,
+		Handler: b.WebhookHandler(),
+	}
+
+	go func() {
+		<-ctx.Done()
+		slog.Info("shutting down webhook server")
+		shutdownCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+		if err := server.Shutdown(shutdownCtx); err != nil {
+			slog.Error("webhook server shutdown", "error", err)
+		}
+	}()
+
 	if tlsCert != "" && tlsKey != "" {
 		slog.Info("starting HTTPS webhook", "addr", listenAddr)
 		go func() {
-			if err := http.ListenAndServeTLS(listenAddr, tlsCert, tlsKey, b.WebhookHandler()); err != nil {
+			if err := server.ListenAndServeTLS(tlsCert, tlsKey); err != nil && err != http.ErrServerClosed {
 				slog.Error("HTTPS server", "error", err)
 				os.Exit(1)
 			}
@@ -37,7 +53,7 @@ func startWebhook(ctx context.Context, b *tgbot.Bot, h *handler.Handler, webhook
 	} else {
 		slog.Info("starting HTTP webhook (TLS by reverse proxy)", "addr", listenAddr)
 		go func() {
-			if err := http.ListenAndServe(listenAddr, b.WebhookHandler()); err != nil {
+			if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
 				slog.Error("HTTP server", "error", err)
 				os.Exit(1)
 			}

internal/domain/totals.go

@@ -18,7 +18,7 @@ func ComputeDailyTotals(events []Event, minBreakThreshold int64, dayStart, dayEn
 	state := StateIdle
 	var workStart, breakStart int64
 
-	if dayStart > 0 {
+	if dayStart > 0 && sorted[0].EventType == "out" {
 		state = StateWorking
 		workStart = dayStart
 	} else if sorted[0].EventType == "out" {

internal/domain/totals_test.go

@@ -36,7 +36,7 @@ func TestComputeDailyTotals_SingleInOut(t *testing.T) {
 	}
 }
 
-func TestComputeDailyTotals_MissingFirstIn(t *testing.T) {
+func TestComputeDailyTotals_DayStartWithOutFirst(t *testing.T) {
 	events := []Event{
 		mkEvent("out", 200),
 		mkEvent("in", 300),
@@ -44,7 +44,39 @@ func TestComputeDailyTotals_MissingFirstIn(t *testing.T) {
 	}
 	got := ComputeDailyTotals(events, 0, 100, 500)
 	if got.TotalSeconds != 200 {
-		t.Errorf("missing first in: TotalSeconds=%d, want 200", got.TotalSeconds)
+		t.Errorf("dayStart with out first: TotalSeconds=%d, want 200", got.TotalSeconds)
+	}
+}
+
+func TestComputeDailyTotals_DayStartWithInFirst(t *testing.T) {
+	events := []Event{
+		mkEvent("in", 100),
+		mkEvent("out", 200),
+		mkEvent("in", 300),
+		mkEvent("out", 400),
+	}
+	got := ComputeDailyTotals(events, 0, 50, 500)
+	if got.TotalSeconds != 200 {
+		t.Errorf("dayStart with in first: TotalSeconds=%d, want 200", got.TotalSeconds)
+	}
+	if got.BreakSeconds != 200 {
+		t.Errorf("dayStart with in first: BreakSeconds=%d, want 200", got.BreakSeconds)
+	}
+}
+
+func TestComputeDailyTotals_DayStartInFirstRealistic(t *testing.T) {
+	events := []Event{
+		mkEvent("in", 33060),
+		mkEvent("out", 47100),
+		mkEvent("in", 48780),
+		mkEvent("out", 74460),
+	}
+	got := ComputeDailyTotals(events, 0, 0, 86399)
+	if got.TotalSeconds != 39720 {
+		t.Errorf("realistic day: TotalSeconds=%d, want 39720 (11h 02m)", got.TotalSeconds)
+	}
+	if got.BreakSeconds != 13619 {
+		t.Errorf("realistic day: BreakSeconds=%d, want 13619 (3h 19m)", got.BreakSeconds)
 	}
 }
 

internal/handler/settings.go

@@ -144,7 +144,8 @@ func (h *Handler) leagueToggleCallback(ctx context.Context, chatID int64, msgID
 		return
 	}
 	if !st.RPGEnabled {
-		h.editText(ctx, chatID, msgID, "League requires the RPG system. Enable RPG first in Settings.", nil)
+		kb := settingsBackKeyboard()
+		h.editText(ctx, chatID, msgID, "League requires the RPG system. Enable RPG first in Settings.", &kb)
 		return
 	}
 	text, kb := h.buildToggleKeyboard(user.ID, "league", "WorkTime League")