fix(acp): Enrich PATH at startup for macOS GUI launches

GUI apps on macOS inherit a minimal PATH that doesn't include
Homebrew, nvm, or fnm paths. This caused `node` not to be found
when spawning copilot/claude binaries (exit code 127).

Add `fix-path-env` crate from tauri-apps which sources the user's
login shell PATH at startup, fixing all 7 spawn points at once.

Author: wilcorrea

apps/tauri/src-tauri/Cargo.lock

@@ -35,3 +35,4 @@ rusqlite = { version = "0.31", features = ["bundled"] }
 uuid = { version = "1", features = ["v4"] }
 chrono = "0.4"
 indexmap = "2"
+fix-path-env = { git = "https://github.com/tauri-apps/fix-path-env-rs" }

apps/tauri/src-tauri/Cargo.toml

@@ -873,6 +873,8 @@ fn setup_macos_menu(app: &tauri::App) -> Result<(), Box<dyn std::error::Error>>
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
+    let _ = fix_path_env::fix();
+
     let builder = tauri::Builder::default()
         .plugin(tauri_plugin_cli::init())
         .plugin(tauri_plugin_dialog::init())