Replace custom connect() wrapper with peewee's built-in pragmas
parameter to fix SQLite connection failure after OMR upgrade.
The previous implementation called execute_sql() inside connect(),
which triggered retry logic on failure, causing infinite recursion
and connection state corruption. Using peewee's native mechanism
applies PRAGMAs via the raw cursor before connect() returns.
Co-authored-by: Claude <noreply@anthropic.com>
