fix(frontend): validate persisted state and own UI lifecycles

crates/pantograph-embedded-runtime/src/lib.rs

@@ -61,6 +61,8 @@ mod node_io_artifacts;
 pub mod package_readiness_provider;
 #[allow(dead_code)]
 mod pumas_dispatch_package_facts;
+#[cfg(test)]
+mod pumas_test_support;
 pub mod python_package_readiness_probe;
 pub mod python_runtime;
 mod python_runtime_env_resolution;

crates/pantograph-embedded-runtime/src/lib_tests.rs

@@ -121,7 +121,7 @@ async fn runtime_extensions_apply_workflow_service_for_stream_artifacts() {
 async fn runtime_extensions_apply_pumas_selector_access() {
     let temp_dir = TempDir::new().expect("temporary Pumas root should be created");
     let pumas_api = Arc::new(
-        pumas_library::PumasApi::builder(temp_dir.path())
+        crate::pumas_test_support::builder(temp_dir.path())
             .build()
             .await
             .expect("pumas api should initialize"),

crates/pantograph-embedded-runtime/src/lib_tests/edit_session_execution_tests.rs

@@ -7,7 +7,7 @@ async fn execute_edit_session_graph_reconciles_registry_after_restore() {
     let (model_id, embedding_model_path) = write_imported_embedding_model(temp.path());
 
     let pumas_api = Arc::new(
-        pumas_library::PumasApi::builder(temp.path())
+        crate::pumas_test_support::builder(temp.path())
             .build()
             .await
             .expect("build pumas api"),
@@ -123,7 +123,7 @@ async fn execute_edit_session_graph_restore_keeps_scheduler_runtime_registry_dia
     let (model_id, embedding_model_path) = write_imported_embedding_model(temp.path());
 
     let pumas_api = Arc::new(
-        pumas_library::PumasApi::builder(temp.path())
+        crate::pumas_test_support::builder(temp.path())
             .build()
             .await
             .expect("build pumas api"),
@@ -278,7 +278,7 @@ async fn execute_edit_session_graph_reconciles_registry_after_embedding_prepare(
     let (model_id, embedding_model_path) = write_imported_embedding_model(temp.path());
 
     let pumas_api = Arc::new(
-        pumas_library::PumasApi::builder(temp.path())
+        crate::pumas_test_support::builder(temp.path())
             .build()
             .await
             .expect("build pumas api"),
@@ -404,7 +404,7 @@ async fn execute_edit_session_graph_reconciles_registry_after_failed_restore() {
     let (model_id, embedding_model_path) = write_imported_embedding_model(temp.path());
 
     let pumas_api = Arc::new(
-        pumas_library::PumasApi::builder(temp.path())
+        crate::pumas_test_support::builder(temp.path())
             .build()
             .await
             .expect("build pumas api"),

crates/pantograph-embedded-runtime/src/lib_tests/workflow_run_execution_tests.rs

@@ -121,7 +121,7 @@ async fn workflow_execution_session_dispatches_through_production_embedded_image
     let pumas_root = temp.path().join("pumas");
     std::fs::create_dir_all(&pumas_root).expect("pumas root");
     let pumas_api = Arc::new(
-        pumas_library::PumasApi::builder(pumas_root)
+        crate::pumas_test_support::builder(pumas_root)
             .with_hf_client(false)
             .with_process_manager(false)
             .build()

crates/pantograph-embedded-runtime/src/pumas_dispatch_package_facts.rs

@@ -332,7 +332,7 @@ mod tests {
         write_test_diffusers_bundle(&model_dir);
         write_imported_diffusion_metadata(&model_dir, model_id, &model_dir);
         let api = Arc::new(
-            pumas_library::PumasApi::builder(temp_dir.path())
+            crate::pumas_test_support::builder(temp_dir.path())
                 .with_hf_client(false)
                 .with_process_manager(false)
                 .build()
@@ -400,7 +400,7 @@ mod tests {
         write_test_diffusers_bundle(&model_dir);
         write_imported_diffusion_metadata(&model_dir, model_id, &model_dir);
         let api = Arc::new(
-            pumas_library::PumasApi::builder(temp_dir.path())
+            crate::pumas_test_support::builder(temp_dir.path())
                 .with_hf_client(false)
                 .with_process_manager(false)
                 .build()
@@ -490,7 +490,7 @@ mod tests {
     #[tokio::test]
     async fn read_only_selector_access_does_not_promote_summaries() {
         let temp_dir = create_test_env();
-        let api = pumas_library::PumasApi::builder(temp_dir.path())
+        let api = crate::pumas_test_support::builder(temp_dir.path())
             .with_hf_client(false)
             .with_process_manager(false)
             .build()

crates/pantograph-embedded-runtime/src/pumas_test_support.rs

@@ -0,0 +1,83 @@
+//! Shared startup preparation for Pumas owner API fixtures.
+
+use std::path::{Path, PathBuf};
+use std::sync::OnceLock;
+
+use pumas_library::registry::LibraryRegistry;
+
+pub(crate) fn builder(launcher_root: impl Into<PathBuf>) -> pumas_library::PumasApiBuilder {
+    static REGISTRY: OnceLock<LibraryRegistry> = OnceLock::new();
+
+    // Fixture model directories are independent, but every owner API opens the
+    // same platform registry. Finish its first WAL/schema initialization once
+    // before parallel builders open additional connections, and keep it alive
+    // for the test process. Initialization errors still fail the test.
+    let db_path = pumas_library::platform::registry_db_path().expect("Pumas test registry path");
+    prepare_registry(&REGISTRY, &db_path);
+    pumas_library::PumasApi::builder(launcher_root)
+}
+
+fn prepare_registry(registry: &OnceLock<LibraryRegistry>, db_path: &Path) {
+    registry
+        .get_or_init(|| LibraryRegistry::open_at(db_path).expect("Pumas test registry startup"));
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::sync::Barrier;
+
+    #[test]
+    fn concurrent_owner_registry_connections_follow_completed_cold_startup() {
+        const OWNERS: usize = 32;
+
+        for _ in 0..8 {
+            let temp = tempfile::tempdir().expect("isolated registry directory");
+            let db_path = temp.path().join("registry.db");
+            let registry = OnceLock::new();
+            let barrier = Barrier::new(OWNERS);
+
+            std::thread::scope(|scope| {
+                let mut owners = Vec::new();
+                for owner in 0..OWNERS {
+                    let library_path = temp.path().join(format!("owner-{owner}"));
+                    std::fs::create_dir(&library_path).expect("owner library directory");
+                    let db_path = &db_path;
+                    let registry = &registry;
+                    let barrier = &barrier;
+                    owners.push(scope.spawn(move || {
+                        barrier.wait();
+                        prepare_registry(registry, db_path);
+                        let connection =
+                            LibraryRegistry::open_at(db_path).expect("owner registry connection");
+                        connection
+                            .register(&library_path, "test-owner")
+                            .expect("owner registration");
+                        assert!(matches!(
+                            connection
+                                .try_claim_instance(&library_path, std::process::id())
+                                .expect("owner instance claim"),
+                            pumas_library::registry::InstanceClaimResult::Claimed(_)
+                        ));
+                        connection
+                            .unregister_instance(&library_path)
+                            .expect("owner instance cleanup");
+                    }));
+                }
+                for owner in owners {
+                    owner.join().expect("owner startup should succeed");
+                }
+            });
+
+            assert_eq!(
+                registry
+                    .get()
+                    .expect("prepared registry")
+                    .list()
+                    .expect("registered owners")
+                    .len(),
+                OWNERS
+            );
+        }
+    }
+}

crates/pantograph-embedded-runtime/src/runtime_host_execution_port.rs

@@ -2045,7 +2045,7 @@ mod tests {
         let pumas_root = temp.path().join("pumas");
         std::fs::create_dir_all(&pumas_root).expect("pumas launcher root");
         let pumas_api = Arc::new(
-            pumas_library::PumasApi::builder(pumas_root)
+            crate::pumas_test_support::builder(pumas_root)
                 .with_hf_client(false)
                 .with_process_manager(false)
                 .build()

crates/pantograph-embedded-runtime/src/task_executor_tests/puma_lib.rs

@@ -18,7 +18,7 @@ async fn puma_lib_execution_hydrates_model_ref_from_model_id_without_path_output
     write_imported_diffusion_metadata(&model_dir, "diffusion/imported/test-bundle", &bundle_root);
 
     let api = Arc::new(
-        pumas_library::PumasApi::builder(temp_dir.path())
+        crate::pumas_test_support::builder(temp_dir.path())
             .build()
             .await
             .expect("pumas api should initialize"),
@@ -157,7 +157,7 @@ async fn puma_lib_execution_does_not_rebind_model_id_from_raw_pumas_api() {
     write_imported_diffusion_metadata(&model_dir, model_id, &bundle_root);
 
     let api = Arc::new(
-        pumas_library::PumasApi::builder(temp_dir.path())
+        crate::pumas_test_support::builder(temp_dir.path())
             .build()
             .await
             .expect("pumas api should initialize"),
@@ -227,7 +227,7 @@ async fn puma_lib_execution_hydrates_model_ref_from_selector_access_without_puma
         .join(model_id);
     write_imported_diffusion_metadata(&model_dir, model_id, &bundle_root);
 
-    let api = pumas_library::PumasApi::builder(temp_dir.path())
+    let api = crate::pumas_test_support::builder(temp_dir.path())
         .build()
         .await
         .expect("pumas api should initialize");
@@ -310,7 +310,7 @@ async fn puma_lib_execution_does_not_emit_inference_settings_from_saved_or_selec
     write_imported_diffusion_metadata(&model_dir, model_id, &bundle_root);
 
     let api = Arc::new(
-        pumas_library::PumasApi::builder(temp_dir.path())
+        crate::pumas_test_support::builder(temp_dir.path())
             .build()
             .await
             .expect("pumas api should initialize"),
@@ -373,7 +373,7 @@ async fn puma_lib_execution_does_not_resolve_saved_model_name_without_model_id()
     write_imported_diffusion_metadata(&model_dir, model_id, &bundle_root);
 
     let api = Arc::new(
-        pumas_library::PumasApi::builder(temp_dir.path())
+        crate::pumas_test_support::builder(temp_dir.path())
             .build()
             .await
             .expect("pumas api should initialize"),

crates/pantograph-embedded-runtime/src/technical_fit.rs

@@ -2884,7 +2884,7 @@ mod tests {
         let temp_dir = tempfile::tempdir().expect("temp dir");
         let model_id = "llm/test/live-technical-fit-facts";
         let api = Arc::new(
-            pumas_library::PumasApi::builder(temp_dir.path())
+            crate::pumas_test_support::builder(temp_dir.path())
                 .with_hf_client(false)
                 .with_process_manager(false)
                 .build()
@@ -2960,7 +2960,7 @@ mod tests {
         let temp_dir = tempfile::tempdir().expect("temp dir");
         std::fs::create_dir_all(temp_dir.path().join("shared-resources/models"))
             .expect("models dir");
-        let api = pumas_library::PumasApi::builder(temp_dir.path())
+        let api = crate::pumas_test_support::builder(temp_dir.path())
             .with_hf_client(false)
             .with_process_manager(false)
             .build()

crates/pantograph-embedded-runtime/src/workflow_service_composition.rs

@@ -772,7 +772,7 @@ mod tests {
     async fn builds_resource_backed_hosted_workflow_service_before_sharing() {
         let temp_dir = tempfile::tempdir().expect("tempdir");
         let pumas_api = Arc::new(
-            pumas_library::PumasApi::builder(temp_dir.path())
+            crate::pumas_test_support::builder(temp_dir.path())
                 .with_hf_client(false)
                 .with_process_manager(false)
                 .build()
@@ -808,7 +808,7 @@ mod tests {
         write_test_diffusers_bundle(&model_dir);
         write_imported_diffusion_metadata(&model_dir, model_id, &model_dir);
         let pumas_api = Arc::new(
-            pumas_library::PumasApi::builder(temp_dir.path())
+            crate::pumas_test_support::builder(temp_dir.path())
                 .with_hf_client(false)
                 .with_process_manager(false)
                 .build()
@@ -909,7 +909,7 @@ mod tests {
         write_test_diffusers_bundle(&model_dir);
         write_imported_diffusion_metadata(&model_dir, model_id, &model_dir);
         let pumas_api = Arc::new(
-            pumas_library::PumasApi::builder(temp_dir.path())
+            crate::pumas_test_support::builder(temp_dir.path())
                 .with_hf_client(false)
                 .with_process_manager(false)
                 .build()
@@ -1084,7 +1084,7 @@ mod tests {
     async fn hosted_resource_backed_factory_requires_artifact_writer_before_sharing() {
         let temp_dir = tempfile::tempdir().expect("tempdir");
         let pumas_api = Arc::new(
-            pumas_library::PumasApi::builder(temp_dir.path())
+            crate::pumas_test_support::builder(temp_dir.path())
                 .with_hf_client(false)
                 .with_process_manager(false)
                 .build()
@@ -1117,7 +1117,7 @@ mod tests {
     #[tokio::test]
     async fn hosted_resource_backed_factory_rejects_non_owner_pumas_access() {
         let temp_dir = tempfile::tempdir().expect("tempdir");
-        let pumas_api = pumas_library::PumasApi::builder(temp_dir.path())
+        let pumas_api = crate::pumas_test_support::builder(temp_dir.path())
             .with_hf_client(false)
             .with_process_manager(false)
             .build()
@@ -1157,7 +1157,7 @@ mod tests {
     async fn resource_backed_hosted_bundle_returns_service_and_lifecycle_handle() {
         let temp_dir = tempfile::tempdir().expect("tempdir");
         let pumas_api = Arc::new(
-            pumas_library::PumasApi::builder(temp_dir.path())
+            crate::pumas_test_support::builder(temp_dir.path())
                 .with_hf_client(false)
                 .with_process_manager(false)
                 .build()
@@ -1194,7 +1194,7 @@ mod tests {
     async fn resource_backed_hosted_bundle_rejects_invalid_producer_config_before_sharing() {
         let temp_dir = tempfile::tempdir().expect("tempdir");
         let pumas_api = Arc::new(
-            pumas_library::PumasApi::builder(temp_dir.path())
+            crate::pumas_test_support::builder(temp_dir.path())
                 .with_hf_client(false)
                 .with_process_manager(false)
                 .build()
@@ -1283,7 +1283,7 @@ mod tests {
     async fn hosted_startup_composition_returns_service_extensions_and_lifecycle_handle() {
         let temp_dir = tempfile::tempdir().expect("tempdir");
         let pumas_api = Arc::new(
-            pumas_library::PumasApi::builder(temp_dir.path())
+            crate::pumas_test_support::builder(temp_dir.path())
                 .with_hf_client(false)
                 .with_process_manager(false)
                 .build()
@@ -1394,7 +1394,7 @@ mod tests {
     #[tokio::test]
     async fn hosted_startup_composition_rejects_non_owner_pumas_selector_access() {
         let temp_dir = tempfile::tempdir().expect("tempdir");
-        let pumas_api = pumas_library::PumasApi::builder(temp_dir.path())
+        let pumas_api = crate::pumas_test_support::builder(temp_dir.path())
             .with_hf_client(false)
             .with_process_manager(false)
             .build()
@@ -1440,7 +1440,7 @@ mod tests {
     async fn hosted_startup_composition_rejects_service_error_before_starting_sidecar() {
         let temp_dir = tempfile::tempdir().expect("tempdir");
         let pumas_api = Arc::new(
-            pumas_library::PumasApi::builder(temp_dir.path())
+            crate::pumas_test_support::builder(temp_dir.path())
                 .with_hf_client(false)
                 .with_process_manager(false)
                 .build()