personal memory agent

release: 0.6.9 master

bump version 0.6.8 -> 0.6.9 + CHANGELOG (convey in-page nav fix; journal format contract; push reach-relay token + content-free chat-fold trigger, both gated behind spn). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>