v0.7.44

What's Changed

• fix(llm): a clean end_turn/stop with empty text is a legit completion, not an error (3df3216)
• fix(gemini): tool-result uses {output}/{error} per Gemini 3 contract (606361f)
• release: update version files for v0.7.42, bump to next dev version (3b7e795)

Full Changelog: v0.7.43...v0.7.44