⚡ Bolt: Optimize regex replaceAll with literal String.replace

[RoiSoleil]

💡 What: Replaced Matcher.replaceAll with literal String.replace in FileNameEvaluation.java. Also removed the now-unused precompiled Pattern instances and imports.
🎯 Why: In modern JDKs (Java 21 in this project), using String.replace() for literal string replacements avoids regex compilation and state-machine traversal overhead, providing a significant performance improvement.
📊 Impact: Reduces GC pressure and CPU overhead during filename evaluation, which is a frequent operation when matching tests to sources.
🔬 Measurement: Verify by running xvfb-run -a mvn -f org.moreunit.build/pom.xml clean verify and confirming all tests in FileNameEvaluationTest continue to pass.

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PR created automatically by Jules for task 15904077605095254635 started by @RoiSoleil

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.12%. Comparing base (3d45358) to head (d8dabd6).

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #275      +/-   ##
============================================
- Coverage     75.13%   75.12%   -0.01%     
+ Complexity     3313     3312       -1     
============================================
  Files           422      422              
  Lines         14568    14565       -3     
  Branches       1270     1270              
============================================
- Hits          10945    10942       -3     
  Misses         3090     3090              
  Partials        533      533              

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