**2 issues found** across 10 files

Prompt for AI agents (unresolved issues)

```text Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately. P2: New CJK centering helper is not null-safe and can throw NPE during rendering/formatting. P2: `I18n` uses unsynchronized mutable static locale/bundle state, which is not thread-safe and can leak or mismatch language state across concurrent operations. ```

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