test: Add snapshot for sublimeSearch and a first test (no-changelog) (#13794)

packages/@n8n/utils/src/search/snapshots/README.md

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+# Search snapshots
+
+This directory contains snapshots containing real data fed into the sublimeSearch function.
+
+These were obtained via `console.log(items)` right before the sublimeSearch call in `editor-ui` (currently in `packages/frontend/editor-ui/src/components/Node/NodeCreator/utils.ts`)
+Which is triggered by typing in the search bar in varying states of the application:
+
+- toplevel: From an empty workflow (so missing e.g. tools)
+
+
+After typing in the search bar you should see an object in the console you can copy via `Right Click->Copy Object" which will cleanly paste to json.
+
+**Please use Chrome for capturing these - the recovered object in Chrome is about 3x larger than in Firefox due to Firefox dropping some nested values**

packages/@n8n/utils/src/search/sublimeSearch.test.ts

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+import topLevel from './snapshots/toplevel.snapshot.json';
+import { sublimeSearch } from './sublimeSearch';
+
+describe('sublimeSearch', () => {
+	const testCases = [{ filter: 'agent', expectedOrder: ['Magento 2', 'AI Agent'] }];
+
+	test.each(testCases)(
+		'should return results in the correct order for filter "$filter"',
+		({ filter, expectedOrder }) => {
+			const results = sublimeSearch(filter, topLevel, [
+				{ key: 'properties.displayName', weight: 1.3 },
+				{ key: 'properties.codex.alias', weight: 1 },
+			]);
+
+			const resultNames = results.map((result) => result.item.properties.displayName);
+			expectedOrder.forEach((expectedName, index) => {
+				expect(resultNames[index]).toBe(expectedName);
+			});
+		},
+	);
+});