feat: deepen luker host integration

tests/message-updated-lightweight.mjs

@@ -0,0 +1,78 @@
+import assert from "node:assert/strict";
+
+import {
+  onMessageUpdatedController,
+  registerCoreEventHooksController,
+} from "../host/event-binding.js";
+
+{
+  let invalidated = 0;
+  let rechecked = 0;
+  let refreshed = 0;
+  let ignored = null;
+
+  const result = onMessageUpdatedController(
+    {
+      invalidateRecallAfterHistoryMutation() {
+        invalidated += 1;
+      },
+      scheduleHistoryMutationRecheck() {
+        rechecked += 1;
+      },
+      refreshPersistedRecallMessageUi() {
+        refreshed += 1;
+      },
+      recordIgnoredMutationEvent(eventName, detail) {
+        ignored = { eventName, detail };
+      },
+    },
+    17,
+    { source: "unit-test" },
+  );
+
+  assert.equal(invalidated, 0);
+  assert.equal(rechecked, 0);
+  assert.equal(refreshed, 1);
+  assert.equal(result.lightweight, true);
+  assert.equal(ignored?.eventName, "message-updated");
+  assert.equal(ignored?.detail?.reason, "lightweight-refresh-only");
+}
+
+{
+  const bindings = [];
+  const runtime = {
+    eventSource: {
+      on(eventName, handler) {
+        bindings.push({ eventName, handler });
+      },
+    },
+    eventTypes: {
+      MESSAGE_UPDATED: "message-updated",
+      MESSAGE_EDITED: "message-edited",
+      CHAT_CHANGED: "chat-changed",
+    },
+    handlers: {
+      onChatChanged() {},
+      onMessageEdited() {},
+      onMessageUpdated() {},
+    },
+    registerBeforeCombinePrompts() {
+      return null;
+    },
+    registerGenerationAfterCommands() {
+      return null;
+    },
+    getCoreEventBindingState() {
+      return { registered: false, cleanups: [] };
+    },
+    setCoreEventBindingState() {},
+  };
+
+  registerCoreEventHooksController(runtime);
+  const updatedBinding = bindings.find((entry) => entry.eventName === "message-updated");
+  const editedBinding = bindings.find((entry) => entry.eventName === "message-edited");
+  assert.equal(updatedBinding?.handler, runtime.handlers.onMessageUpdated);
+  assert.equal(editedBinding?.handler, runtime.handlers.onMessageEdited);
+}
+
+console.log("message-updated-lightweight tests passed");