SMART Architecture: Stratified Monotone Action Runtime for TrajectoryOS

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> **Contract Statement**: Orbit grants capability, FunctionGemma proposes, RAG++ advises, but only the Kernel can commit. SMART (Stratified Monotone Action Runtime) is the execution architecture for TrajectoryOS that brings Clarity-like guarantees to energetic, always-on workflows. It separates the system into three distinct authority rings: | Ring | Component | Authority | Can Mutate? | |------|-----------|-----------|-------------| | **Governor** | Orbit | Issues capability/scope tokens, controls tool visibility | No | | **Library** | RAG++ | Retrieves context, advises on state, computes embeddings | No | | **Executor** | Kernel (VM) | Checks admissibility, commits syscalls, writes ledger | **Yes** | The local **FunctionGemma** model acts as a syscall compiler: it translates natural language into structured tool calls but has no authority to execute anything. All execution flows through the Kernel. Traditional smart contract languages (like Clarity) achieve safety by making programs fully analyzable before execution: no hidden control flow, no unbounded loops, no runtime surprises. SMART adapts these principles to continuous, always-on systems:

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