feat(player): start muted, unmute via button (autoplay-friendly)

Scenes/movies now start with sound OFF; user enables audio via a control
(UX request). NativeVideoPlayer: useVideoPlayer starts muted=true + speaker
toggle in top controls + always-visible "Tap for sound" pill while muted.
WebView path: injected autoplay sets muted=true (also makes muted autoplay
reliable per browser policy → faster CDN extraction); host player controls
handle unmute when the WebView is the actual surface.

Verified on emulator against the live runtime-1.1 OTA bundle: video starts
muted (pill shown), tap unmutes (pill clears).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

mobile/src/screens/PlayerScreen.tsx

@@ -161,8 +161,19 @@ function NativeVideoPlayer({ params }: { params: RouteParams }) {
 
   const player = useVideoPlayer(source, (p) => {
     p.loop = false;
+    // Start wyciszony — dźwięk dopiero po tapnięciu przycisku (UX request 2026-06-07).
+    // Dodatkowo: muted autoplay nie wymaga audio-focus, więc nie ucisza muzyki usera
+    // przy podglądzie i nie zaskakuje głośnym startem.
+    p.muted = true;
     p.play();
   });
+  const [muted, setMuted] = React.useState(true);
+  const toggleMute = React.useCallback(() => {
+    const next = !player.muted;
+    player.muted = next;
+    setMuted(next);
+    setControlsVisible(true);
+  }, [player]);
 
   const statusEvent = useEvent(player, 'statusChange', { status: player.status });
   const status = statusEvent?.status ?? player.status;
@@ -637,6 +648,14 @@ function NativeVideoPlayer({ params }: { params: RouteParams }) {
         </View>
       )}
 
+      {/* Unmute pill — zawsze widoczny gdy wyciszone (poza fade controls), bo start jest
+          muted i user musi wiedzieć jak włączyć dźwięk. Tap → unmute. */}
+      {muted && (
+        <Pressable onPress={toggleMute} style={styles.unmutePill} hitSlop={12}>
+          <Text style={styles.unmutePillText}>🔇  Tap for sound</Text>
+        </Pressable>
+      )}
+
       {/* Controls overlay — pointerEvents box-none żeby gesture overlay pod spodem
           dalej dostawał taps poza interactive elements (back, play, scrubber). */}
       <Animated.View
@@ -654,6 +673,9 @@ function NativeVideoPlayer({ params }: { params: RouteParams }) {
           ) : (
             <View style={{ flex: 1 }} />
           )}
+          <Pressable onPress={toggleMute} hitSlop={16} style={styles.iconBtn}>
+            <Text style={styles.iconText}>{muted ? '🔇' : '🔊'}</Text>
+          </Pressable>
           <Pressable onPress={toggleFullscreen} hitSlop={16} style={styles.iconBtn}>
             <Text style={styles.iconText}>{isLandscape ? '⤬' : '⛶'}</Text>
           </Pressable>
@@ -1053,7 +1075,12 @@ const INJECTED_JS = `
       // i ma valid src, próbujemy odpalić.
       if (el.tagName === 'VIDEO' && el.paused && (el.src || el.currentSrc)) {
         try {
-          el.muted = false;
+          // Start muted (UX request 2026-06-07: dźwięk dopiero po geście usera).
+          // Bonus: muted autoplay jest dozwolony przez politykę przeglądarki, więc
+          // video faktycznie rusza bez gestu → szybsza ekstrakcja CDN URL (potem
+          // nav.replace na NativeVideoPlayer). W odsłoniętym WebView dźwięk włącza
+          // user przez własne kontrolki playera hostera.
+          el.muted = true;
           const p = el.play();
           if (p && p.catch) p.catch(function(){});
         } catch (e) {}
@@ -1614,4 +1641,18 @@ const styles = StyleSheet.create({
     borderRadius: 14,
     overflow: 'hidden',
   },
+  unmutePill: {
+    position: 'absolute',
+    bottom: 96,
+    alignSelf: 'center',
+    backgroundColor: 'rgba(0,0,0,0.78)',
+    paddingVertical: 8,
+    paddingHorizontal: 16,
+    borderRadius: 18,
+  },
+  unmutePillText: {
+    color: theme.fg,
+    fontSize: 14,
+    fontWeight: '700',
+  },
 });