Address PR #1739 review feedback:
- P1 (greptile): When workspaceMode is explicitly false in config.json,
skip the auto-detection fallback so toggling workspace mode off via the
dashboard has a lasting effect (was being re-enabled on next registration).
- CodeRabbit: node_modules exclusion test now includes a real sibling
sub-repo to prove the exclusion is the gate, not just absence of
detection.
- Add test for workspaceMode:false config.json guard.
42342eff03