feat: session manger (#867)

* feat: init session manger

* feat: persist selected app to localStorage

- Save app selection when switching providers
- Restore last selected app on page load

* feat: persist current view to localStorage

- Save view selection when switching tabs
- Restore last selected view on page load

* styles: update ui

* feat: Improve macOS Terminal activation and refactor Kitty launch to use  command with user's default shell.

* fix: session view

* feat: toc

* feat: Implement FlexSearch for improved session search functionality.

* feat: Redesign session manager search and filter UI for a more compact and dynamic experience.

* refactor: modularize session manager by extracting components and utility functions into dedicated files.

* feat: Enhance session terminal launching with support for iTerm2, Ghostty, WezTerm, and Alacritty, including UI and custom configuration options.

* feat: Conditionally render terminal selection and resume session buttons only on macOS.

src-tauri/src/commands/mod.rs

@@ -13,6 +13,7 @@ mod prompt;
 mod provider;
 mod proxy;
 mod settings;
+mod session_manager;
 pub mod skill;
 mod stream_check;
 mod usage;
@@ -30,6 +31,7 @@ pub use prompt::*;
 pub use provider::*;
 pub use proxy::*;
 pub use settings::*;
+pub use session_manager::*;
 pub use skill::*;
 pub use stream_check::*;
 pub use usage::*;

src-tauri/src/commands/session_manager.rs

@@ -0,0 +1,51 @@
+#![allow(non_snake_case)]
+
+use crate::session_manager;
+
+#[tauri::command]
+pub async fn list_sessions() -> Result<Vec<session_manager::SessionMeta>, String> {
+    let sessions = tauri::async_runtime::spawn_blocking(session_manager::scan_sessions)
+        .await
+        .map_err(|e| format!("Failed to scan sessions: {e}"))?;
+    Ok(sessions)
+}
+
+#[tauri::command]
+pub async fn get_session_messages(
+    providerId: String,
+    sourcePath: String,
+) -> Result<Vec<session_manager::SessionMessage>, String> {
+    let provider_id = providerId.clone();
+    let source_path = sourcePath.clone();
+    tauri::async_runtime::spawn_blocking(move || {
+        session_manager::load_messages(&provider_id, &source_path)
+    })
+    .await
+    .map_err(|e| format!("Failed to load session messages: {e}"))?
+}
+
+#[tauri::command]
+pub async fn launch_session_terminal(
+    target: String,
+    command: String,
+    cwd: Option<String>,
+    custom_config: Option<String>,
+) -> Result<bool, String> {
+    let command = command.clone();
+    let target = target.clone();
+    let cwd = cwd.clone();
+    let custom_config = custom_config.clone();
+
+    tauri::async_runtime::spawn_blocking(move || {
+        session_manager::terminal::launch_terminal(
+            &target,
+            &command,
+            cwd.as_deref(),
+            custom_config.as_deref(),
+        )
+    })
+    .await
+    .map_err(|e| format!("Failed to launch terminal: {e}"))??;
+
+    Ok(true)
+}