Async config loading (#18022)

Parts of config will come from executor. Prepare for that by making
config loading methods async.

codex-rs/tui/src/chatwidget/tests/helpers.rs

@@ -10,6 +10,7 @@ pub(super) async fn test_config() -> Config {
         .keep();
     let mut config =
         Config::load_default_with_cli_overrides_for_codex_home(codex_home.clone(), Vec::new())
+            .await
             .expect("config");
     config.codex_home = codex_home.abs();
     config.sqlite_home = codex_home.clone();

codex-rs/tui/src/onboarding/onboarding_screen.rs

@@ -4,6 +4,7 @@ use crate::legacy_core::windows_sandbox::WindowsSandboxLevelExt;
 use codex_app_server_client::AppServerEvent;
 use codex_app_server_client::AppServerRequestHandle;
 use codex_app_server_protocol::ServerNotification;
+use codex_git_utils::resolve_root_git_project_for_trust;
 #[cfg(target_os = "windows")]
 use codex_protocol::config_types::WindowsSandboxLevel;
 use crossterm::event::KeyCode;
@@ -77,7 +78,7 @@ pub(crate) struct OnboardingResult {
 }
 
 impl OnboardingScreen {
-    pub(crate) fn new(tui: &mut Tui, args: OnboardingScreenArgs) -> Self {
+    pub(crate) async fn new(tui: &mut Tui, args: OnboardingScreenArgs) -> Self {
         let OnboardingScreenArgs {
             show_trust_screen,
             show_login_screen,
@@ -122,8 +123,12 @@ impl OnboardingScreen {
         let show_windows_create_sandbox_hint = false;
         let highlighted = TrustDirectorySelection::Trust;
         if show_trust_screen {
+            let trust_target = resolve_root_git_project_for_trust(&cwd)
+                .await
+                .unwrap_or_else(|| cwd.clone());
             steps.push(Step::TrustDirectory(TrustDirectoryWidget {
                 cwd,
+                trust_target,
                 codex_home,
                 show_windows_create_sandbox_hint,
                 should_quit: false,
@@ -452,7 +457,7 @@ pub(crate) async fn run_onboarding_app(
 ) -> Result<OnboardingResult> {
     use tokio_stream::StreamExt;
 
-    let mut onboarding_screen = OnboardingScreen::new(tui, args);
+    let mut onboarding_screen = OnboardingScreen::new(tui, args).await;
     // One-time guard to fully clear the screen after ChatGPT login success message is shown
     let mut did_full_clear_after_success = false;
 

codex-rs/tui/src/onboarding/trust_directory.rs

@@ -1,7 +1,6 @@
 use std::path::PathBuf;
 
 use crate::legacy_core::config::set_project_trust_level;
-use codex_git_utils::resolve_root_git_project_for_trust;
 use codex_protocol::config_types::TrustLevel;
 use crossterm::event::KeyCode;
 use crossterm::event::KeyEvent;
@@ -27,6 +26,7 @@ use super::onboarding_screen::StepState;
 pub(crate) struct TrustDirectoryWidget {
     pub codex_home: PathBuf,
     pub cwd: PathBuf,
+    pub trust_target: PathBuf,
     pub show_windows_create_sandbox_hint: bool,
     pub should_quit: bool,
     pub selection: Option<TrustDirectorySelection>,
@@ -142,8 +142,7 @@ impl StepStateProvider for TrustDirectoryWidget {
 
 impl TrustDirectoryWidget {
     fn handle_trust(&mut self) {
-        let target =
-            resolve_root_git_project_for_trust(&self.cwd).unwrap_or_else(|| self.cwd.clone());
+        let target = self.trust_target.clone();
         if let Err(e) = set_project_trust_level(&self.codex_home, &target, TrustLevel::Trusted) {
             tracing::error!("Failed to set project trusted: {e:?}");
             self.error = Some(format!("Failed to set trust for {}: {e}", target.display()));
@@ -182,6 +181,7 @@ mod tests {
         let mut widget = TrustDirectoryWidget {
             codex_home: codex_home.path().to_path_buf(),
             cwd: PathBuf::from("."),
+            trust_target: PathBuf::from("."),
             show_windows_create_sandbox_hint: false,
             should_quit: false,
             selection: None,
@@ -207,6 +207,7 @@ mod tests {
         let widget = TrustDirectoryWidget {
             codex_home: codex_home.path().to_path_buf(),
             cwd: PathBuf::from("/workspace/project"),
+            trust_target: PathBuf::from("/workspace/project"),
             show_windows_create_sandbox_hint: false,
             should_quit: false,
             selection: None,