v0.6.18

Maintenance release

Stella includes reliability and maintenance improvements.

Changes

🚀 Features

• batch OCR on a configurable interval (#1554)
• chat: render persisted rich message parts (#1542)

🐛 Bug Fixes

• gate procedural migrations
• close online migration invariants
• harden online migration execution

⚙️ Miscellaneous

• release: 0.6.18 (#1566)
• speed up production browser checks (#1557)
• bump posthog-js in the posthog group across 1 directory (#1529)