fix: update run_tests tests for Stdio::inherit and bump tool count to 60

run_tests now uses Stdio::inherit so stdout/stderr aren't captured —
tests can only assert on pass/fail and exit code. Tool count bumped
from 59 to 60 for the new get_test_result tool.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/src/http/mcp/mod.rs

@@ -1550,7 +1550,7 @@ mod tests {
         assert!(names.contains(&"status"));
         assert!(names.contains(&"loc_file"));
         assert!(names.contains(&"dump_crdt"));
-        assert_eq!(tools.len(), 59);
+        assert_eq!(tools.len(), 60);
     }
 
     #[test]