Fix initPromise poisoning in both PlatformProvider and OSSProvider where
a failed init permanently cached the rejected promise, preventing retries.
Add disableHistory passthrough so users can opt out of SQLite history
storage. Add graceful fallback that auto-retries with history disabled
when Memory construction fails (e.g. native binding resolution under jiti).
Fixes#4172
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
