v3.6.20

What's Changed

Fixed

• fix: headless dispatch bugs — --cwd flag, session-not-found retry, claim comment leak (#17017, GH#16978)
  • Bug A: _build_claude_cmd used --directory (invalid Claude CLI flag) → replaced with --cwd
  • Bug B: Stale session IDs caused "Session not found" on OpenCode → added retry logic in _execute_run_attempt
  • Bug C: DISPATCH_CLAIM comments leaked when dispatch blocked after claim → added _cleanup_claim_comment() helper

Changed

• t1873.7: tests: add local tier to test-model-availability.sh tier resolution loop (#17006)
• docs: split MongoDB design corpus into chapter files with slim index (#17002)
• GH#16993: restructure ElevenLabs DESIGN.md into chapter files (#17003)