refactor(sdk): move go/container decorators to codepathfinder package + rename Python DSL → SDK

[shivasurya]

Summary

• Move go_decorators.py and go_ir.py from python-sdk/rules/ to python-sdk/codepathfinder/ — the canonical SDK package location
• Move container_decorators.py and container_ir.py to python-sdk/codepathfinder/ for consistency
• Replace old locations with backward-compatibility shims that re-export from codepathfinder
• Update all 69 rule files (rules/golang/ and rules/docker*/) to import from codepathfinder directly
• Fix 18 meta.yaml files: quote YAML list items containing : that broke js-yaml strict parsing
• Rename "Python DSL" → "Python SDK" across docs, code comments, CHANGELOG, CLAUDE.md, and examples

Motivation

The @go_rule and @dockerfile_rule/@compose_rule decorators belong in the core codepathfinder SDK package, not in the rules/ directory. This aligns with where @python_rule lives and makes the import paths consistent for rule authors.

Test plan

• All existing Go rule imports resolve correctly via from codepathfinder.go_decorators import go_rule
• All existing Docker/Compose rule imports resolve correctly via from codepathfinder.container_decorators import dockerfile_rule
• Backward-compat shims in rules/go_decorators.py and rules/container_decorators.py re-export all symbols
• generate-registry.mjs script runs without YAML parsing errors on all 22 Go rules

🤖 Generated with Claude Code

[safedep]

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Recommendations:

• Split this PR into smaller, focused changes
• Review critical dependency changes manually
• Contact your team if this is blocking your workflow
  _{This report is generated by SafeDep Github App}

[github-actions]

Code Pathfinder Security Scan

No security issues detected.

Metric	Value
Files Scanned	380
Rules	205

---

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.94%. Comparing base (83f9052) to head (73d0788).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #658      +/-   ##
==========================================
+ Coverage   84.91%   84.94%   +0.02%     
==========================================
  Files         172      172              
  Lines       24879    24882       +3     
==========================================
+ Hits        21126    21136      +10     
+ Misses       2964     2959       -5     
+ Partials      789      787       -2     

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