Fix compile-kit bugs for standalone kit repositories

[itsouvalas]

• Allow compile-kit to work from kit source directories (not just deployment repos)

  • Only query remote/local kit versions when in a deployment repository
  • Skip version checks when compiling from standalone kit repos

• Fix filename truncation bug in Kit Compiler

  • Corrected regex from s{/}{/}r to s{/$}{/}r to only match trailing slashes
  • Removed incorrect +1 offset that was stripping first character of filenames

• Add graceful handling for missing files during compilation

  • Check for undefined return from tar->add_files() instead of crashing
  • Log warning and skip missing files instead of failing

These changes allow kit authors to run 'genesis compile-kit' directly from their kit source repositories without needing a deployment repository context.