Struct Unit 

pub struct Unit {
    pub id: String,
    pub title: String,
    pub session_key: String,
    pub plan_path: Option<String>,
    pub extra_env: Vec<(String, String)>,
}

A single unit of work to be dispatched. Drivers map their domain objects (backlog nodes, fleet projects, …) to this common shape.

Fields

id: String

Stable identifier, e.g. ab-XXXXXXXX for a backlog node.

title: String

Human-readable title for log output.

session_key: String

Correlation key matched against termination events’ data.session_id. For target sessions this is the session identifier written into the target-state.md manifest; for other drivers it is whatever key the dispatcher embeds in its events.

plan_path: Option<String>

Optional plan path for context (not used by the runtime itself).

extra_env: Vec<(String, String)>

Driver-specific extra env vars to inject into the child process. The runtime passes these through to the Dispatcher without inspecting them. MegawalkQueue populates TARGET_MISSION_* for fleet nodes; TargetQueue leaves this empty. Megatron will use this seam too.