Add CLAUDE.md via symlink to AGENTS.md with updated dependencies

[aaronspring]

Summary

• continue Add CLAUDE.md for Claude Code guidance #438
• Update AGENTS.md dependencies (numpy >=1.24 -> numpy >=1.25) to match pyproject.toml
• Create CLAUDE.md as symlink to AGENTS.md for Claude Code compatibility

[Zeitsperre]

LGTM

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.56%. Comparing base (0ae02aa) to head (0054646).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #446   +/-   ##
=======================================
  Coverage   94.56%   94.56%           
=======================================
  Files          27       27           
  Lines        2836     2836           
=======================================
  Hits         2682     2682           
  Misses        154      154           

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