Release v0.19.6-nightly.20260704.5dc2e1501

What's Changed

• fix(triage): strengthen PR gate with batch detection, problem existence check, and red flag patterns by @pomelo-nwu in #5723
• feat(review): route suggestion-level findings to an updatable PR comment by @pomelo-nwu in #5786
• fix(autofix): unconditionally restore tracked files before branch checkout (#6281) by @qwen-code-dev-bot in #6286
• feat(serve): Add runtime.activity fields to daemon status API by @doudouOUC in #6270

Full Changelog: v0.19.6...v0.19.6-nightly.20260704.5dc2e1501