Occasional crash in hive-mind

When running the hive mind, I occasionally see the entire claude code process crash with this error

```
/.npm/_npx/7cfa166e65244432/node_modules/better-sqlite3/lib/methods/wrappers.js:5
return this[cppdb].prepare(sql, this, false);
^

TypeError: The database connection is not open
at Database.prepare (/.npm/_npx/7cfa166e65244432/node_modules/better-sqlite3/lib/methods/wrappers.js:5:21)
at HiveMindSessionManager.removeChildPid (file:///.npm/_npx/7cfa166e65244432/node_modules/claude-flow/src/cli/simple-commands/hive-mind/session-manager.js:932:29)
at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
```