test: relocate Cypress e2e suite to e2e/ ahead of Playwright migration

Pure file moves (no content changes) so git records them as renames and
history/blame is preserved through the migration that follows:
  cypress/e2e/*.cy.ts        -> e2e/*.spec.ts
  cypress/e2e/*-driver.ts    -> e2e/*-driver.ts
  cypress/fixtures/          -> e2e/fixtures/
  cypress.config.ts          -> playwright.config.ts
  InputAutocomplete.cy.tsx   -> InputAutocomplete.browser.test.tsx

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

e2e/modal-driver.ts

@@ -0,0 +1,40 @@
+import { v1 as uuid } from "uuid";
+import MaputnikCypressHelper from "./maputnik-cypress-helper";
+
+export default class ModalDriver {
+  private helper = new MaputnikCypressHelper();
+
+  public when = {
+    fillLayers: (opts: { type: string; layer?: string; id?: string }) => {
+      // Having logic in test code is an anti pattern.
+      // This should be split to multiple single responsibility functions
+      const type = opts.type;
+      const layer = opts.layer;
+      let id;
+      if (opts.id) {
+        id = opts.id;
+      } else {
+        id = `${type}:${uuid()}`;
+      }
+      this.helper.when.selectOption("add-layer.layer-type.select", type);
+      this.helper.when.type("add-layer.layer-id.input", id);
+
+      if (layer) {
+        this.helper.when.doWithin(() => {
+          this.helper.get.element("input").clear().type(layer!);
+        }, "add-layer.layer-source-block");
+      }
+      this.helper.when.click("add-layer");
+
+      return id;
+    },
+
+    open: () => {
+      this.helper.when.click("layer-list:add-layer");
+    },
+
+    close: (key: string) => {
+      this.helper.when.click(key + ".close-modal");
+    },
+  };
+}