Add string-to-array coercion for ids and memorySessionIds in DataRoutes.ts
batch endpoints so MCP clients sending "[1,2,3]" or "1,2,3" instead of
native arrays no longer get 400 errors. Wrap observation storage path in
SessionRoutes.ts with try/catch returning 200 on recoverable errors instead
of 500, preventing hook breakage.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
suyua9