feat(captions): extend data model with font, shadow, dimmed color, bg toggle fields

Co-authored-by: Cursor <cursoragent@cursor.com>

src-tauri/src/models.rs

@@ -9,6 +9,10 @@ pub struct VideoMetadata {
     pub fps: f64,
     pub thumbnail_url: Option<String>,
     pub stream_url: String,
+    /// Whether English captions are available (manual or auto-generated)
+    pub has_captions: bool,
+    /// True if the available captions are auto-generated (lower quality)
+    pub captions_are_auto: bool,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -84,6 +88,28 @@ pub enum ExportScope {
     Merged,
 }
 
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct CaptionStyle {
+    pub font_family: String,
+    pub font_size: u32,
+    pub text_color: String,
+    pub bold: bool,
+    pub outline_color: String,
+    pub background_enabled: bool,
+    pub background_opacity: f64,
+    pub background_color: String,
+    pub text_outline: bool,
+    pub shadow_enabled: bool,
+    pub shadow_depth: u32,
+    pub shadow_color: String,
+    pub dimmed_color_mode: String,
+    pub dimmed_opacity: f64,
+    pub dimmed_color: String,
+    pub position: String,
+    pub word_highlight: bool,
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct ExportConfig {
@@ -93,6 +119,25 @@ pub struct ExportConfig {
     pub output_directory: String,
     pub video_title: String,
     pub source_file_path: String,
+    /// Whether to include captions in the export
+    pub include_captions: bool,
+    /// Whether to burn subtitles into the video (requires re-encoding)
+    pub burn_in_captions: bool,
+    /// Path to the VTT caption file (if available)
+    pub caption_file_path: Option<String>,
+    /// Style settings for burned-in captions
+    pub caption_style: Option<CaptionStyle>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct WaveformTiers {
+    /// ~2,000 peaks — overview for full-duration view
+    pub tier0: Vec<f64>,
+    /// ~10,000 peaks — moderate zoom
+    pub tier1: Vec<f64>,
+    /// All extracted peaks — deep zoom
+    pub tier2: Vec<f64>,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]