fix: address Task 2 review findings (stderr + cookie flags)

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

src-tauri/src/services/dependency_manager.rs

@@ -1,4 +1,4 @@
-use crate::models::DependencyStatus;
+use crate::models::{CookieSource, DependencyStatus};
 use std::process::Command;
 
 pub fn check_tool_exists(name: &str) -> Option<String> {
@@ -22,10 +22,14 @@ pub fn check_js_runtime() -> Option<String> {
     check_tool_exists("deno").or_else(|| check_tool_exists("node"))
 }
 
-pub fn check_pot_plugin() -> bool {
-    let output = Command::new("yt-dlp")
-        .args(["-v", "--simulate", "https://www.youtube.com/watch?v=dQw4w9WgXcQ"])
-        .output();
+pub fn check_pot_plugin(cookie_source: &CookieSource) -> bool {
+    let mut command = Command::new("yt-dlp");
+    command
+        .arg("-v")
+        .arg("--simulate")
+        .args(cookie_source.to_ytdlp_args())
+        .arg("https://www.youtube.com/watch?v=dQw4w9WgXcQ");
+    let output = command.output();
 
     match output {
         Ok(out) => {
@@ -36,12 +40,12 @@ pub fn check_pot_plugin() -> bool {
     }
 }
 
-pub fn get_all_dependency_statuses() -> Vec<DependencyStatus> {
+pub fn get_all_dependency_statuses(cookie_source: &CookieSource) -> Vec<DependencyStatus> {
     let ffmpeg = check_tool_exists("ffmpeg");
     let ytdlp = check_tool_exists("yt-dlp");
     let js_runtime = check_js_runtime();
     let pot_plugin = if ytdlp.is_some() {
-        check_pot_plugin()
+        check_pot_plugin(cookie_source)
     } else {
         false
     };
@@ -95,6 +99,7 @@ pub fn get_install_args(dep_name: &str) -> Result<Vec<String>, String> {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::models::CookieSource;
 
     #[test]
     fn test_get_install_args_ffmpeg() {
@@ -121,7 +126,7 @@ mod tests {
 
     #[test]
     fn test_dependency_statuses_has_four_entries() {
-        let statuses = get_all_dependency_statuses();
+        let statuses = get_all_dependency_statuses(&CookieSource::default());
         assert_eq!(statuses.len(), 4);
         assert_eq!(statuses[0].name, "ffmpeg");
         assert_eq!(statuses[1].name, "yt-dlp");