feat: add ability to run multiple agents via tabbed views (#47)

### Explanation

_No response_

### Issue

Closes #30 Closes #41

### Attestations

- [ ] I have read and agree to the [Code of Conduct](https://docs.nhcarrigan.com/community/coc/)
- [ ] I have read and agree to the [Community Guidelines](https://docs.nhcarrigan.com/community/guide/).
- [ ] My contribution complies with the [Contributor Covenant](https://docs.nhcarrigan.com/dev/covenant/).

### Dependencies

- [ ] I have pinned the dependencies to a specific patch version.

### Style

- [ ] I have run the linter and resolved any errors.
- [ ] My pull request uses an appropriate title, matching the conventional commit standards.
- [ ] My scope of feat/fix/chore/etc. correctly matches the nature of changes in my pull request.

### Tests

- [ ] My contribution adds new code, and I have added tests to cover it.
- [ ] My contribution modifies existing code, and I have updated the tests to reflect these changes.
- [ ] All new and existing tests pass locally with my changes.
- [ ] Code coverage remains at or above the configured threshold.

### Documentation

_No response_

### Versioning

_No response_

Reviewed-on: #47
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

src-tauri/src/lib.rs

@@ -1,4 +1,5 @@
 mod achievements;
+mod bridge_manager;
 mod commands;
 mod config;
 mod notifications;
@@ -11,7 +12,7 @@ mod windows_toast;
 
 use commands::*;
 use notifications::*;
-use wsl_bridge::create_shared_bridge;
+use bridge_manager::create_shared_bridge_manager;
 use commands::load_saved_achievements;
 use wsl_notifications::*;
 use vbs_notification::*;
@@ -19,7 +20,7 @@ use windows_toast::*;
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
-    let bridge = create_shared_bridge();
+    let bridge_manager = create_shared_bridge_manager();
 
     tauri::Builder::default()
         .plugin(tauri_plugin_dialog::init())
@@ -28,7 +29,12 @@ pub fn run() {
         .plugin(tauri_plugin_store::Builder::new().build())
         .plugin(tauri_plugin_notification::init())
         .plugin(tauri_plugin_os::init())
-        .manage(bridge)
+        .manage(bridge_manager.clone())
+        .setup(move |app| {
+            // Initialize the app handle in the bridge manager
+            bridge_manager.lock().set_app_handle(app.handle().clone());
+            Ok(())
+        })
         .invoke_handler(tauri::generate_handler![
             start_claude,
             stop_claude,