Runtime Extensions [SPEC] – Split Notice

Reader orientation: This is a redirect page. The runtime extensions specification – which defines how every subsystem in the Golem (a mortal autonomous agent compiled as a single Rust binary running on a micro VM) is implemented as a native Rust extension with lifecycle hooks – has been split into two parts. Extensions are the primary organizational unit: 28 extensions across 7 dependency layers, each implementing a subset of 20 lifecycle hooks. See prd2/shared/glossary.md (canonical Bardo term definitions) for full term definitions.

This document has been split into two parts to stay under the 2000-line threshold:

• 13a-runtime-extensions.md – Extension Architecture, Registry, GolemState, Interventions, Session Tree, Tool Authorization, Model Routing, Adaptive Clock (Sections 1-6 + source primitives)
• 13b-runtime-extensions.md – Type-State Machine, Event Fabric, CorticalState (32-signal atomic shared perception surface), Arena allocator, 10-phase Shutdown, Main Binary (Sections 7-15)

All existing cross-references to 13-runtime-extensions.md remain valid via this redirect.