Safety and coordination model

Signal Core, Blast Shield, and Race Shield — how Pytxo scopes reads, isolates writes, and orders overlapping work.

Pytxo has three controls for context, isolated changes, and overlapping tasks. Their effect depends on the run configuration and permission profile.

What it does	Feature	Function
Smarter context	Signal Core	Send agents code skeletons so they spend tokens on work, not noise
Isolated writes	Blast Shield	Keep writes in isolated copies until you Review → Apply
No write collisions	Race Shield	Path ownership and waves so overlapping work does not run together

         Signal Core          Blast Shield         Race Shield
              |                     |                    |
              +----------+----------+----------+---------+
                         |
                    Orchestrator
                         |
                      Agents

On Galaxy, human approvals add a queue for risky host commands. That queue is not repository Apply. Apply is Desktop Run Review.

Eligible Orbit and Galaxy runs use isolated copies of your repo (Git worktrees by default). Supernova writes directly to the host. Race Shield orders declared overlapping path claims; it does not govern every external side effect. See Signal Core for how context scaffolding works.

Each layer has its own concept page with configuration options.