Add preemption to New Yorker style diaeresis words

[simonw]

Make the New Yorker thing handle preemption

The dictionary already had preempt, preempts, preempted, preempting, and
preemptive but was missing the noun form "preemption" → "preëmption".

https://claude.ai/code/session_01SJT6TQwkbVxzQLoWET4k8N

[claude]

Claude finished @simonw's task —— View job

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PR Review Complete ✅

Todo List:

• Read and analyze the changed file
• Review code quality and implementation
• Check for potential bugs or issues
• Evaluate performance considerations
• Assess security concerns
• Review test coverage
• Provide comprehensive feedback

Code Review Feedback

This PR makes a single, well-targeted addition to the New Yorker Style Converter tool. Here's my comprehensive review:

✅ Code Quality & Best Practices

• Excellent: The change follows the existing code pattern perfectly
• Consistent: Maintains alphabetical ordering within the preempt* word group (new-yorker-style.html:233)
• Complete: Fills a logical gap in the word family (preempt, preempts, preempted, preempting, preemptive → preemption)

✅ Potential Bugs or Issues

• No issues found: The implementation is straightforward and follows the exact same pattern as existing entries
• Proper placement: Added in the correct location within the diaresisWords object
• Correct mapping: 'preemption': 'preëmption' uses the proper diaeresis character (ë)

✅ Performance Considerations

• Minimal impact: Single object property addition has negligible performance impact
• Efficient lookup: Maintains the existing O(1) hash table lookup pattern
• No regression: Change doesn't affect the existing replacement algorithm

✅ Security Concerns

• Safe: No security implications for this purely textual mapping addition
• No injection risks: Static string replacement with no user-controlled input processing

⚠️ Test Coverage

• No tests present: The HTML file contains no automated tests
• Manual verification recommended: Should test that "preemption" correctly converts to "preëmption" in the web interface
• Suggestion: Consider adding a simple test suite for the convertToNewYorkerStyle function, especially for word boundary handling and case preservation

📝 Summary

This is a clean, minimal change that correctly completes the preemption word family in the diaeresis dictionary. The implementation is solid and consistent with existing patterns. The only improvement would be adding automated tests to prevent regressions.

Recommendation: ✅ Approve - This change is ready to merge.