Thunk

Thunk is built on the Thinking System—four interlocking Rust crates that form a complete cognitive pipeline. STEEL, SLEET, STELE, and ESTEL handle everything from kernel-level resource management to human-facing output, all running locally on your hardware.

STEEL is the kernel: process isolation, resource scheduling, and the inter-process messaging bus. Above it, SLEET provides a gas-metered bytecode VM with ephemeral execution theatres—sandboxed contexts for untrusted reasoning that are destroyed upon completion.

STELE implements the cognitive core: multi-tier memory (episodic, semantic, short-term), the declarative flow engine, and the policy-governed Scribes that mediate between ephemeral computation and durable state. Bitemporal storage tracks not just what you know, but when you learned it and how.

ESTEL handles the human–AI interface: intent capture, adaptive visualisation, and bidirectional transformation between human-readable and machine-processable representations.

The visualisation below traces information flow through this architecture. Each node is a real symbol from the codebase. Hover to see its documentation; trace the attention weights connecting layers.