swarmctl shares the create-agent, inference and permissions shapes with the controller

swarm-wire/src/agent_inference.rs

@@ -92,6 +92,19 @@ pub enum Source {
     Default,
 }
 
+impl Source {
+    /// The name as it is stored and served.
+    #[must_use]
+    pub const fn as_str(self) -> &'static str {
+        match self {
+            Self::Swarm => "swarm",
+            Self::AgentNix => "agent_nix",
+            Self::LocalFile => "local_file",
+            Self::Default => "default",
+        }
+    }
+}
+
 /// The model and effort an agent runs on now, and where each comes from.
 ///
 /// Part of the turn-state header the agent publishes on
@@ -184,6 +197,20 @@ mod tests {
         }
     }
 
+    #[test]
+    fn every_source_is_stored_as_its_name() {
+        for source in [
+            Source::Swarm,
+            Source::AgentNix,
+            Source::LocalFile,
+            Source::Default,
+        ] {
+            assert_eq!(
+                serde_json::to_string(&source).unwrap(),
+                format!("\"{}\"", source.as_str())
+            );
+        }
+    }
     #[test]
     fn an_unknown_effort_is_refused() {
         for doc in [