chore: traffic data 2026-06-04

Author: github-actions[bot]

traffic/stats-history.ndjson

@@ -46,3 +46,4 @@
 {"date": "2026-06-01", "stars": 418, "forks": 137, "watchers": 5, "open_issues": 5}
 {"date": "2026-06-02", "stars": 418, "forks": 137, "watchers": 5, "open_issues": 0}
 {"date": "2026-06-03", "stars": 418, "forks": 137, "watchers": 5, "open_issues": 0}
+{"date": "2026-06-04", "stars": 418, "forks": 137, "watchers": 5, "open_issues": 1}