Apply runic formatting

[kdw503]

Summary

• Applies runic -i formatting to src/RegisterFit.jl and test/runtests.jl
• Formatting-only commit — no functional changes

Test plan

• Confirm tests still pass after merge

🤖 Generated with Claude Code

[codecov]

Codecov Report

❌ Patch coverage is 63.07692% with 48 lines in your changes missing coverage. Please review.
✅ Project coverage is 63.49%. Comparing base (ab574ea) to head (b97855b).

Files with missing lines	Patch %	Lines
src/RegisterFit.jl	63.07%	48 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #17      +/-   ##
==========================================
+ Coverage   63.27%   63.49%   +0.22%     
==========================================
  Files           1        1              
  Lines         324      326       +2     
==========================================
+ Hits          205      207       +2     
  Misses        119      119              

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