Add Claude Code config symlinks and update gitignore

[domchen]

Summary

• Add .claude/rules and .claude/skills symlinks pointing to .codebuddy/ counterparts for Claude Code compatibility.
• Update .gitignore to use generic *.local.json and *.local.md patterns instead of the specific CODEBUDDY.local.md entry.

Test plan

• Verify symlinks resolve correctly
• Verify local config files are excluded by gitignore

🤖 Generated with Claude Code

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.35%. Comparing base (e738624) to head (6e4efea).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3333   +/-   ##
=======================================
  Coverage   75.35%   75.35%           
=======================================
  Files         503      503           
  Lines       33414    33414           
  Branches    10668    10668           
=======================================
  Hits        25180    25180           
+ Misses       6030     6022    -8     
- Partials     2204     2212    +8     

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