fix(review): address CodeRabbit feedback

- swap direct i18next t imports for the useTranslation hook so the four
  touched components re-render on language change
- localize the buffer seconds unit via a buffer_seconds key instead of a
  literal trailing s
- reword the useAppRouter guard comment to match its real scope

components/PlatformDropdown.tsx

@@ -1,7 +1,7 @@
 import { Ionicons } from "@expo/vector-icons";
 import { BottomSheetScrollView } from "@gorhom/bottom-sheet";
-import { t } from "i18next";
 import React, { useEffect } from "react";
+import { useTranslation } from "react-i18next";
 import { Platform, StyleSheet, TouchableOpacity, View } from "react-native";
 import { useSafeAreaInsets } from "react-native-safe-area-context";
 import { Text } from "@/components/common/Text";
@@ -210,6 +210,7 @@ const PlatformDropdownComponent = ({
   expoUIConfig,
   bottomSheetConfig,
 }: PlatformDropdownProps) => {
+  const { t } = useTranslation();
   const { showModal, hideModal, isVisible } = useGlobalModal();
 
   // Handle controlled open state for Android

components/livetv/TVGuideProgramCell.tsx

@@ -1,6 +1,6 @@
 import type { BaseItemDto } from "@jellyfin/sdk/lib/generated-client";
-import { t } from "i18next";
 import React from "react";
+import { useTranslation } from "react-i18next";
 import { Animated, Pressable, StyleSheet, View } from "react-native";
 import { Text } from "@/components/common/Text";
 import { useTVFocusAnimation } from "@/components/tv/hooks/useTVFocusAnimation";
@@ -23,6 +23,7 @@ export const TVGuideProgramCell: React.FC<TVGuideProgramCellProps> = ({
   disabled = false,
   refSetter,
 }) => {
+  const { t } = useTranslation();
   const typography = useScaledTVTypography();
   const { focused, handleFocus, handleBlur } = useTVFocusAnimation({
     scaleAmount: 1,

components/tv/TVPosterCard.tsx

@@ -1,9 +1,9 @@
 import { Ionicons } from "@expo/vector-icons";
 import type { BaseItemDto } from "@jellyfin/sdk/lib/generated-client/models";
 import { Image } from "expo-image";
-import { t } from "i18next";
 import { useAtomValue } from "jotai";
 import React, { useMemo, useRef, useState } from "react";
+import { useTranslation } from "react-i18next";
 import {
   Animated,
   Easing,
@@ -107,6 +107,7 @@ export const TVPosterCard: React.FC<TVPosterCardProps> = ({
   scaleAmount = 1.05,
   imageUrlGetter,
 }) => {
+  const { t } = useTranslation();
   const api = useAtomValue(apiAtom);
   const posterSizes = useScaledTVPosterSizes();
   const typography = useScaledTVTypography();

components/video-player/controls/TechnicalInfoOverlay.tsx

@@ -344,8 +344,9 @@ export const TechnicalInfoOverlay: FC<TechnicalInfoOverlayProps> = memo(
           )}
           {info?.cacheSeconds !== undefined && (
             <Text style={textStyle}>
-              {t("player.technical_info.buffer")} {info.cacheSeconds.toFixed(1)}
-              s
+              {t("player.technical_info.buffer_seconds", {
+                seconds: info.cacheSeconds.toFixed(1),
+              })}
             </Text>
           )}
           {info?.voDriver && (