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

### Explanation

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### Issue

Closes #30 Closes #41

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- [ ] 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.

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

src-tauri/src/commands.rs

@@ -3,50 +3,65 @@ use tauri_plugin_store::StoreExt;
 
 use crate::config::{ClaudeStartOptions, HikariConfig};
 use crate::stats::UsageStats;
-use crate::wsl_bridge::SharedBridge;
+use crate::bridge_manager::SharedBridgeManager;
 use crate::achievements::{load_achievements, get_achievement_info, AchievementUnlockedEvent};
 
 const CONFIG_STORE_KEY: &str = "config";
 
 #[tauri::command]
 pub async fn start_claude(
-    app: AppHandle,
-    bridge: State<'_, SharedBridge>,
+    bridge_manager: State<'_, SharedBridgeManager>,
+    conversation_id: String,
     options: ClaudeStartOptions,
 ) -> Result<(), String> {
-    let mut bridge = bridge.lock();
-    bridge.start(app, options)
+    let mut manager = bridge_manager.lock();
+    manager.start_claude(&conversation_id, options)
 }
 
 #[tauri::command]
-pub async fn stop_claude(app: AppHandle, bridge: State<'_, SharedBridge>) -> Result<(), String> {
-    let mut bridge = bridge.lock();
-    bridge.stop(&app);
-    Ok(())
+pub async fn stop_claude(
+    bridge_manager: State<'_, SharedBridgeManager>,
+    conversation_id: String,
+) -> Result<(), String> {
+    let mut manager = bridge_manager.lock();
+    manager.stop_claude(&conversation_id)
 }
 
 #[tauri::command]
-pub async fn interrupt_claude(app: AppHandle, bridge: State<'_, SharedBridge>) -> Result<(), String> {
-    let mut bridge = bridge.lock();
-    bridge.interrupt(&app)
+pub async fn interrupt_claude(
+    bridge_manager: State<'_, SharedBridgeManager>,
+    conversation_id: String,
+) -> Result<(), String> {
+    let mut manager = bridge_manager.lock();
+    manager.interrupt_claude(&conversation_id)
 }
 
 #[tauri::command]
-pub async fn send_prompt(bridge: State<'_, SharedBridge>, message: String) -> Result<(), String> {
-    let mut bridge = bridge.lock();
-    bridge.send_message(&message)
+pub async fn send_prompt(
+    bridge_manager: State<'_, SharedBridgeManager>,
+    conversation_id: String,
+    message: String,
+) -> Result<(), String> {
+    let mut manager = bridge_manager.lock();
+    manager.send_prompt(&conversation_id, message)
 }
 
 #[tauri::command]
-pub async fn is_claude_running(bridge: State<'_, SharedBridge>) -> Result<bool, String> {
-    let bridge = bridge.lock();
-    Ok(bridge.is_running())
+pub async fn is_claude_running(
+    bridge_manager: State<'_, SharedBridgeManager>,
+    conversation_id: String,
+) -> Result<bool, String> {
+    let manager = bridge_manager.lock();
+    Ok(manager.is_claude_running(&conversation_id))
 }
 
 #[tauri::command]
-pub async fn get_working_directory(bridge: State<'_, SharedBridge>) -> Result<String, String> {
-    let bridge = bridge.lock();
-    Ok(bridge.get_working_directory().to_string())
+pub async fn get_working_directory(
+    bridge_manager: State<'_, SharedBridgeManager>,
+    conversation_id: String,
+) -> Result<String, String> {
+    let manager = bridge_manager.lock();
+    manager.get_working_directory(&conversation_id)
 }
 
 #[tauri::command]
@@ -82,9 +97,12 @@ pub async fn save_config(app: AppHandle, config: HikariConfig) -> Result<(), Str
 }
 
 #[tauri::command]
-pub async fn get_usage_stats(bridge: State<'_, SharedBridge>) -> Result<UsageStats, String> {
-    let bridge = bridge.lock();
-    Ok(bridge.get_stats())
+pub async fn get_usage_stats(
+    bridge_manager: State<'_, SharedBridgeManager>,
+    conversation_id: String,
+) -> Result<UsageStats, String> {
+    let manager = bridge_manager.lock();
+    manager.get_usage_stats(&conversation_id)
 }
 
 #[tauri::command]