fix: support Task(agent_type) tool name syntax from CLI v2.1.33+

Claude Code CLI v2.1.33 introduced support for restricting sub-agents
via Task(agent_type) syntax in agent tools frontmatter. This commit
updates our Task tool detection to handle both the legacy "Task" syntax
and the new "Task(agent_type)" syntax.

Changes:
- Updated agent-start event detection to match "Task" or "Task("
- Updated character state detection to recognize Task(agent_type)
- Added comprehensive test cases for new syntax variants:
  - Task(Explore)
  - Task(Plan)
  - Task(general-purpose)

The fix is backwards compatible and all 350+ tests pass.

Fixes: #114

src-tauri/src/wsl_bridge.rs

@@ -901,7 +901,8 @@ fn process_json_line(
                         }
 
                         // Emit agent-start event for Task tool invocations
-                        if name == "Task" {
+                        // Support both "Task" and "Task(agent_type)" syntax (CLI v2.1.33+)
+                        if name == "Task" || name.starts_with("Task(") {
                             let description = input
                                 .get("description")
                                 .and_then(|v| v.as_str())
@@ -1496,7 +1497,7 @@ fn get_tool_state(tool_name: &str) -> CharacterState {
         CharacterState::Coding
     } else if tool_name.starts_with("mcp__") {
         CharacterState::Mcp
-    } else if tool_name == "Task" {
+    } else if tool_name == "Task" || tool_name.starts_with("Task(") {
         CharacterState::Thinking
     } else {
         CharacterState::Typing
@@ -1623,6 +1624,19 @@ mod tests {
     #[test]
     fn test_get_tool_state_task() {
         assert!(matches!(get_tool_state("Task"), CharacterState::Thinking));
+        // Test CLI v2.1.33+ Task(agent_type) syntax
+        assert!(matches!(
+            get_tool_state("Task(Explore)"),
+            CharacterState::Thinking
+        ));
+        assert!(matches!(
+            get_tool_state("Task(Plan)"),
+            CharacterState::Thinking
+        ));
+        assert!(matches!(
+            get_tool_state("Task(general-purpose)"),
+            CharacterState::Thinking
+        ));
     }
 
     #[test]