v1.2.1

What's Changed

Security

• [codex] Fix Rust dependency advisories by @arncore in #274

Bug Fixes

• Simplify codebase: fix test pipeline bugs, remove duplication by @arncore in #255
• Fix dep resolution bug, improve code quality across all crates by @arncore in #256
• [codex] Support CLT-only macOS Kotlin/Native builds by @arncore in #271

Enhancements

• Parallelize hashing/downloads and dedupe coordinate helpers by @arncore in #266
• Type-safety followups: typed errors, Profile/Target enums by @arncore in #269
• Perf followups + truck-themed progress bars + UI layering (#267) by @arncore in #270

Testing

• Add unit tests for uncovered helper methods and edge cases by @arncore in #264
• Add 15 smoke tests: test command, lint execution, build flags, transitive deps by @arncore in #265

Other Changes

• Split long functions, deduplicate dir-finding logic by @arncore in #257
• Eliminate redundant find(':') in detekt location parsing by @arncore in #258
• Extract shared build pipeline, reduce duplication across engine by @arncore in #259
• Add helper methods, deduplicate repeated patterns by @arncore in #260
• Simplify fs wrappers, validation, toolchain install, and formatting by @arncore in #261
• Remove dead code, identity functions, and duplicated URL builders by @arncore in #263
• [codex] Rename agent instructions file by @arncore in #273
• [codex] Bump release versions by @arncore in #275

Full Changelog: v1.2.0...v1.2.1