YeonGyu-Kim 11586445cf fix: make sessionExists() async with SDK verification on SQLite
sessionExists() previously returned unconditional true on SQLite,
preventing ralph-loop orphaned-session cleanup from triggering.
Now uses sdkClient.session.messages() to verify session actually
exists. Callers updated to await the async result.

Addresses Cubic review feedback on PR #1837.
2026-02-16 16:13:40 +09:00
..