feat: execute durable standalone Jobs through Host-owned Internal Workers (T-708)

crates/manifest/src/builtin_profile.rs

@@ -94,6 +94,13 @@ pub const BUILTIN_PROFILE_RESOURCES: &[BuiltinProfileResource] = &[
         description: "Workspace orchestration and Worker control.",
         imports: BASE_IMPORT,
     },
+    BuiltinProfileResource {
+        selector: Some("builtin:job"),
+        path: "profiles/job.dcdl",
+        source: include_str!("../../../resources/profiles/job.dcdl"),
+        description: "Result-only caller-selected Job policy.",
+        imports: NO_IMPORTS,
+    },
     BuiltinProfileResource {
         selector: Some("builtin:backend-job"),
         path: "profiles/backend-job.dcdl",

crates/manifest/src/profile.rs

@@ -1257,6 +1257,13 @@ mod tests {
                 )
                 .unwrap();
             assert_eq!(resolved.manifest.worker.name, "role-worker");
+            if entry.name == "job" {
+                assert!(resolved.manifest.compaction.is_none());
+                assert!(resolved.manifest.scope.allow.is_empty());
+                assert!(resolved.manifest.delegation_scope.allow.is_empty());
+                assert_eq!(resolved.manifest.engine.instruction, "internal.job_system");
+                continue;
+            }
             let compaction = resolved.manifest.compaction.as_ref().unwrap();
             assert_eq!(compaction.worker_max_turns, Some(100), "{}", entry.name);
             assert_eq!(