fix: resolve merge conflict artifacts from story-86 merge

- Add missing closing brace and #[test] attr between test functions in claude_code.rs
- Remove premature semicolon in TypeScript union type in client.ts

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/llm/providers/claude_code.rs

@@ -1091,6 +1091,9 @@ mod tests {
     #[test]
     fn claude_code_provider_new() {
         let _provider = ClaudeCodeProvider::new();
+    }
+
+    #[test]
     fn handle_stream_event_tool_use_start_sends_activity() {
         let (tx, _rx) = tokio::sync::mpsc::unbounded_channel::<String>();
         let (atx, mut arx) = tokio::sync::mpsc::unbounded_channel::<String>();