fix(kock): ta bort buggig in-app-timer, ersatt med statisk tidshint

Timern (setInterval-nedrakning per steg) forsvann vid stegbyte och hade ingen
bakgrund/notis. Borttagen helt – visar nu bara stegets ungefarliga tid som text
("⏱ 5 min – anvand din telefons egen timer"). Ingen nedrakning, ingen bugg.

apps/mobile/src/app/cooking/[id].tsx

@@ -1,8 +1,7 @@
-import { useEffect, useRef, useState } from "react";
+import { useState } from "react";
 import { Alert, Pressable, ScrollView, Text, View } from "react-native";
 import { router, useLocalSearchParams } from "expo-router";
 import { useKeepAwake } from "expo-keep-awake";
-import * as Haptics from "expo-haptics";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import { api } from "@/lib/api";
 import { t } from "@/lib/i18n";
@@ -54,8 +53,6 @@ export default function CookingScreen() {
   const queryClient = useQueryClient();
   const [stepIndex, setStepIndex] = useState(0);
   const [showIngredients, setShowIngredients] = useState(false);
-  const [timerLeft, setTimerLeft] = useState<number | null>(null);
-  const timerRef = useRef<ReturnType<typeof setInterval> | null>(null);
   const [finishing, setFinishing] = useState(false);
   const [completedSessionId, setCompletedSessionId] = useState<string | null>(null);
   const [mealBoxPortions, setMealBoxPortions] = useState(0);
@@ -96,12 +93,6 @@ export default function CookingScreen() {
       Alert.alert(t("common.oops"), err instanceof Error ? err.message : t("common.error")),
   });
 
-  useEffect(() => {
-    return () => {
-      if (timerRef.current) clearInterval(timerRef.current);
-    };
-  }, []);
-
   if (query.isLoading) return <LoadingView />;
   if (query.isError || !query.data) return <ErrorView onRetry={() => void query.refetch()} />;
   const recipe = query.data;
@@ -109,21 +100,6 @@ export default function CookingScreen() {
   const step = recipe.steps[stepIndex];
   const isLast = stepIndex >= recipe.steps.length - 1;
 
-  const startTimer = (seconds: number) => {
-    if (timerRef.current) clearInterval(timerRef.current);
-    setTimerLeft(seconds);
-    timerRef.current = setInterval(() => {
-      setTimerLeft((prev) => {
-        if (prev == null || prev <= 1) {
-          if (timerRef.current) clearInterval(timerRef.current);
-          void Haptics.notificationAsync(Haptics.NotificationFeedbackType.Success);
-          return 0;
-        }
-        return prev - 1;
-      });
-    }, 1000);
-  };
-
   const finish = () => {
     setFinishing(true);
   };
@@ -310,26 +286,19 @@ export default function CookingScreen() {
       )}
 
         {step?.timerSeconds != null && (
-          <Pressable
-            onPress={() => startTimer(step.timerSeconds!)}
+          <View
             style={{
-              backgroundColor: timerLeft != null ? colors.accentSoft : colors.primarySoft,
-              padding: spacing.lg,
+              backgroundColor: colors.primarySoft,
+              padding: spacing.md,
               borderRadius: 16,
               alignItems: "center",
             }}
           >
-            <Text style={{ fontSize: 32, fontWeight: "700", color: colors.primaryDark }}>
-              {timerLeft != null ? formatTime(timerLeft) : formatTime(step.timerSeconds)}
+            <Text style={{ fontSize: 22, fontWeight: "700", color: colors.primaryDark }}>
+              ⏱ {formatTime(step.timerSeconds)}
             </Text>
-            <Small>
-              {timerLeft != null
-                ? timerLeft === 0
-                  ? `${t("cooking.timerDone")} 🎉`
-                  : t("cooking.timerRunning", { time: formatTime(timerLeft) })
-                : t("cooking.timer")}
-            </Small>
-          </Pressable>
+            <Small>Ungefärlig tid för steget – använd din telefons egen timer.</Small>
+          </View>
         )}
         <Small>{t("cooking.keepAwake")}</Small>
       </View>