feat: add keyframe index extraction and frame/keyframe navigation

Wire ffprobe-based keyframe indexing through Tauri and auto-load positions after download completes.

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

src-tauri/src/lib.rs

@@ -2,7 +2,7 @@ mod commands;
 mod models;
 mod services;
 
-use commands::{dependencies, video};
+use commands::{dependencies, media_analysis, video};
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
@@ -16,6 +16,7 @@ pub fn run() {
             dependencies::install_dependency,
             video::resolve_url,
             video::start_download,
+            media_analysis::extract_keyframes,
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");