feat: adiciona suporte para sugestão de velocidade com base nas durações de vídeo e faixas de áudio/legenda

src/ui/app.rs

@@ -7,7 +7,7 @@ use crate::application::use_cases::{
     edit_existing_track_sync::EditExistingTrackSync, export_track::ExportTrack,
     load_media_info::LoadMediaInfo, remove_track::RemoveTrack,
 };
-use crate::domain::entities::{MkvOutput, Project, VideoFile};
+use crate::domain::entities::{MkvOutput, Project, TrackKind, VideoFile};
 use crate::domain::value_objects::FilePath;
 use crate::infrastructure::process::{run_ffmpeg_async, run_mkvmerge_async};
 use crate::ui::components::{
@@ -135,6 +135,12 @@ impl App {
                     Ok(_) => {
                         self.existing_track_list
                             .sync_tracks(&project.existing_tracks);
+                        // Propaga duração do vídeo para os formulários (sugestão de velocidade)
+                        let video_dur = project.existing_tracks.iter()
+                            .find(|t| matches!(t.kind, TrackKind::Video))
+                            .and_then(|t| t.duration_ms);
+                        self.add_audio_form.set_video_duration(video_dur);
+                        self.add_subtitle_form.set_video_duration(video_dur);
                     }
                     Err(e) => {
                         self.execution_panel.state = ExecutionState::Error(e.to_string());