fix(host): restore event priority and EJS rendering

tests/ena-planner-ejs.mjs

@@ -0,0 +1,70 @@
+import assert from "node:assert/strict";
+import { createRequire } from "node:module";
+import {
+  installResolveHooks,
+  toDataModuleUrl,
+} from "./helpers/register-hooks-compat.mjs";
+
+const extensionsShimSource = [
+  "export const extension_settings = {};",
+].join("\n");
+const scriptShimSource = [
+  "export function getRequestHeaders() { return {}; }",
+  "export function saveSettingsDebounced() {}",
+  "export function substituteParamsExtended(text = '') { return String(text ?? ''); }",
+].join("\n");
+
+installResolveHooks([
+  {
+    specifiers: ["../../../../extensions.js"],
+    url: toDataModuleUrl(extensionsShimSource),
+  },
+  {
+    specifiers: ["../../../../../script.js"],
+    url: toDataModuleUrl(scriptShimSource),
+  },
+]);
+
+const require = createRequire(import.meta.url);
+const ejs = require("../vendor/ejs.js");
+const originalWindow = globalThis.window;
+const originalWarn = console.warn;
+const warnings = [];
+
+try {
+  globalThis.window = { ...(originalWindow || {}), ejs };
+  console.warn = (...args) => warnings.push(args);
+
+  const { createEnaPlannerEjsContext, renderEjsTemplate } = await import(
+    "../ena-planner/ena-planner.js"
+  );
+
+  const ctx = createEnaPlannerEjsContext({ x: "alpha" });
+  assert.equal(renderEjsTemplate("<%= getvar('x') %>", ctx), "alpha");
+  assert.equal(renderEjsTemplate("<% print(getvar('x')) %>", ctx), "alpha");
+
+  const pollutedCtx = {
+    ...createEnaPlannerEjsContext({ x: "safe" }),
+    __append() {
+      throw new Error("locals __append should not shadow EJS output");
+    },
+    print() {
+      throw new Error("locals print should not shadow EJS output function");
+    },
+  };
+  assert.equal(renderEjsTemplate("<%= getvar('x') %>", pollutedCtx), "safe");
+  assert.equal(renderEjsTemplate("<% print(getvar('x')) %>", pollutedCtx), "safe");
+
+  const invalidTemplate = "before <% if ( %> after";
+  assert.equal(renderEjsTemplate(invalidTemplate, ctx, "invalid"), invalidTemplate);
+  assert.ok(warnings.some((args) => String(args[0]).includes("EJS render failed")));
+} finally {
+  console.warn = originalWarn;
+  if (originalWindow === undefined) {
+    delete globalThis.window;
+  } else {
+    globalThis.window = originalWindow;
+  }
+}
+
+console.log("ena-planner-ejs tests passed");