task: 7-day GBrain shadow vs Cortex comparison review

[100yenadmin]

Summary

Run a 7-day shadow-mode comparison between GBrain and Cortex contributions, focused on docs/knowledge workflows.

Compare

• signal detection quality
• doc/research retrieval quality
• citation/backlink usefulness
• end-of-turn capture usefulness
• false positives / noise
• latency / operational burden

Inputs

• timestamped GBrain shadow contribution log
• same-day Cortex outputs / observed behavior
• manually reviewed examples / gems
• optional separate identity-file drafts written to isolated folder for later Opus review

Acceptance criteria

• 7-day review artifact exists
• side-by-side comparison table exists
• recommendation made for customer-facing docs-layer rollout
• no authority shift without explicit decision

Due

Revisit exactly 7 days after kickoff.