feat: handle EnterWorktree and ExitWorktree tools

Ticket 202

Added EnterWorktree and ExitWorktree to the is_system_tool list so
they never trigger permission prompts, matching the behaviour of
EnterPlanMode/ExitPlanMode. Added human-readable descriptions to
format_tool_description for both tools.

src-tauri/src/wsl_bridge.rs

@@ -1666,7 +1666,10 @@ fn process_json_line(
 
                     // Helper function to check if a tool is a system tool that should never require permission
                     let is_system_tool = |tool_name: &str| -> bool {
-                        matches!(tool_name, "ExitPlanMode" | "EnterPlanMode")
+                        matches!(
+                            tool_name,
+                            "ExitPlanMode" | "EnterPlanMode" | "EnterWorktree" | "ExitWorktree"
+                        )
                     };
 
                     for denial in denials {
@@ -2041,6 +2044,14 @@ fn format_tool_description(name: &str, input: &serde_json::Value) -> String {
                 "Running command...".to_string()
             }
         }
+        "EnterWorktree" => {
+            if let Some(path) = input.get("path").and_then(|v| v.as_str()) {
+                format!("Entering worktree: {}", path)
+            } else {
+                "Entering worktree session...".to_string()
+            }
+        }
+        "ExitWorktree" => "Exiting worktree session...".to_string(),
         "CronCreate" => {
             if let Some(prompt) = input.get("prompt").and_then(|v| v.as_str()) {
                 format!("Scheduling: {}", prompt)
@@ -2222,6 +2233,27 @@ mod tests {
         assert_eq!(desc, "Using tool: CustomTool");
     }
 
+    #[test]
+    fn test_format_tool_description_enter_worktree() {
+        let input = serde_json::json!({"path": "/home/naomi/worktrees/feature-branch"});
+        let desc = format_tool_description("EnterWorktree", &input);
+        assert_eq!(desc, "Entering worktree: /home/naomi/worktrees/feature-branch");
+    }
+
+    #[test]
+    fn test_format_tool_description_enter_worktree_no_path() {
+        let input = serde_json::json!({});
+        let desc = format_tool_description("EnterWorktree", &input);
+        assert_eq!(desc, "Entering worktree session...");
+    }
+
+    #[test]
+    fn test_format_tool_description_exit_worktree() {
+        let input = serde_json::json!({});
+        let desc = format_tool_description("ExitWorktree", &input);
+        assert_eq!(desc, "Exiting worktree session...");
+    }
+
     #[test]
     fn test_format_tool_description_cron_create() {
         let input = serde_json::json!({"prompt": "run tests", "schedule": "*/5 * * * *"});