feat(config): support Skill include and exclude patterns

[zpzjzj]

Summary

• add optional doublestar include and exclude patterns to local Skill references
• apply the same filters to both run-agent and judge Skill installation, with exclude taking precedence
• keep the default behavior of installing all Skill content except evals/, including hidden Agent memory/metadata and ordinary YAML files
• validate patterns, preserve judge filter metadata in reports, and document the configuration in English and Chinese

For the reported Qoder RepoWiki case, users can now configure:

skills:
  - source: local_path
    path: .
    exclude:
      - .qoder/repowiki/**

Verification

• make verify
• make test
• regression coverage confirms .yaml and .yamlx have identical default handling
• installation coverage confirms .qoder/repowiki/** is pruned while .claude/memory.md remains available

[roark47]

LGTM