chore: handle Monitor tool in stream parsing (closes #258)

src-tauri/src/wsl_bridge.rs

@@ -37,7 +37,10 @@ struct PendingToolUse {
     tool_input: serde_json::Value,
 }
 
-const SEARCH_TOOLS: [&str; 5] = ["Read", "Glob", "Grep", "WebSearch", "WebFetch"];
+// "Monitor" added in Claude Code v2.1.98 — it streams events and is observational in nature,
+// so it maps to the Searching character state. It may appear as name "Monitor" in tool_use
+// blocks (confirmed by CLI source inspection; it is a local_bash with kind="monitor" internally).
+const SEARCH_TOOLS: [&str; 6] = ["Read", "Glob", "Grep", "WebSearch", "WebFetch", "Monitor"];
 const CODING_TOOLS: [&str; 3] = ["Edit", "Write", "NotebookEdit"];
 
 fn detect_wsl() -> bool {
@@ -2756,6 +2759,11 @@ mod tests {
             get_tool_state("WebFetch"),
             CharacterState::Searching
         ));
+        // Monitor tool added in v2.1.98 — observational/streaming, maps to Searching
+        assert!(matches!(
+            get_tool_state("Monitor"),
+            CharacterState::Searching
+        ));
     }
 
     #[test]