This specification defines loregd (Local Registry Daemon), the primary registry source for the Peios operating system. loregd implements the Registry Source Interface (RSI) defined in the LCS v0.21 specification, providing persistent storage for one or more registry hives using SQLite.

loregd is the first and reference source implementation. Any process implementing the RSI contract can serve as a registry source; loregd is not architecturally special. It is operationally special: it is the source that provides the Machine\ and Users\ hives at boot, making it the critical path to a running system.

This specification covers:

• The command-line interface and startup sequence
• The SQLite database schema (one database per hive)
• Volatile key storage via attached in-memory databases
• Connection pool model and concurrency
• Transaction handling and write serialisation
• Crash recovery (orphaned GUID cleanup)
• First-boot initialisation (hive root creation)
• The RSI request processing loop
• Case-insensitive storage via stored folded forms
• Shutdown and hive unload behaviour

This specification does not cover:

• LCS (the kernel subsystem) -- see the LCS v0.21 specification
• The RSI binary protocol (wire format, message framing, op codes) -- defined in LCS v0.21
• Registry key schemas (those belong to the subsystems that own them)
• Other source implementations
• peinit's service management of loregd