回退 HTTPS 与无 cookie 拉流改动：放弃 HTTPS 方案，iPhone 播放改用夸克系统解码；仅保留 *.tar.gz 与 _*.py 的 gitignore 卫生规则

internal/app/playback_gateway.go

@@ -259,16 +259,10 @@ func (app *UIApp) handlePlaybackMediaAsset(writer http.ResponseWriter, request *
 		return
 	}
 	run, err := strconv.ParseUint(parts[1], 10, 64)
-	viewer := contextViewer(request.Context())
 	app.playbackMu.Lock()
 	session := app.playbacks[parts[0]]
-	denied := err != nil || session == nil || session.run != run || session.media == nil
-	if !denied && viewer != nil {
-		denied = !viewerOwnsPlayback(request.Context(), session)
-	}
-	if denied {
+	if err != nil || !viewerOwnsPlayback(request.Context(), session) || session.run != run || session.media == nil {
 		app.playbackMu.Unlock()
-		app.recordPlaybackAssetDenial(request, "session-unavailable")
 		writer.WriteHeader(http.StatusGone)
 		return
 	}