brainless 0.2.0

Telegram listens, Buzz answers

• Telegram is capture-only; receipts and errors arrive in Buzz #inbox. Nothing is sent back over Telegram any more: no replies, no buttons, no /today. Old Telegram message ids stop authorising writes; pending previews are re-posted to Buzz and must be approved there. This is the reason for the minor version bump.
• Today and weekly thinking use owner-only Buzz threads with revision-bound approval, pending-preview migration and recoverable writes.
• Notifications use a durable Buzz outbox with relay acknowledgement and lost-ack reconciliation. The interaction timer (brainless-buzz-interactions.timer) retries failed delivery and saved replies.
• Delivery, workflow and capture-only regression coverage added. See docs/buzz-interactions.md for cutover and recovery.

Also in this release (previously unreleased): a wall-clock budget for the nightly compile, health_check.py notifying on both macOS and Linux, dashboard log-date parsing, the Method page's seven Quivy steps, the weekly pile scorecard and archive pass. Full list in CHANGELOG.md.