Tool Execution

Typed Go interfaces. In-process registry. No Python bounce.

The contract

type Tool interface {
    Name() string
    Execute(ctx context.Context, input string) (string, error)
}

Every tool lives behind this interface. Schemas are Go structs — schema drift is a compile error, not a silent agent-loop failure.

Deterministic execution — no subprocess spawning for in-process tools
Bounded side effects — ctx cancels; deadlines respected
Wire Doctor — gormes doctor --offline validates the registry before a live turn burns tokens

✅ Shipped (Phase 2.A). The current registry has the minimal tool surface; porting the 61 upstream Python tools is Phase 5.A. See Phase 2.