Add 5-minute ecosystem health baseline

Delete 16 dead tools (4,158 lines)

Add memory verification, metrics, and audit tools (#56)

docs: add comprehensive lexicon documentation

style: Improve readability and contrast

fix: Restore logo to livestream header

feat: Update site theme to brutalist style

feat: add batch processing via Letta Conversations API

docs: remove incorrect Jetstream wantedCollections limitation

fix: secondary sort by timestamp + NEW indicator for notifications

fix: prevent duplicate response sends in responder queue

feat: add TTL-based auto-cleanup to notification queue