test: e2e smoke; docs: README; ci: release workflow

Co-Authored-By: Claude

e2e/publish.spec.ts

@@ -0,0 +1,27 @@
+import { test, expect } from "@playwright/test";
+import { launchObsidian, withPlugin } from "./harness";
+
+test("plugin loads, command registered, modal opens & prefills", async () => {
+  const obs = await launchObsidian();
+  try {
+    await withPlugin(obs, "jekyll-publish");
+
+    const hasCommand = await obs.page.evaluate(() =>
+      Boolean((window as any).app.commands.commands["jekyll-publish:publish-current-note"])
+    );
+    expect(hasCommand).toBe(true);
+
+    const modalOpened = await obs.page.evaluate(async () => {
+      const app = (window as any).app;
+      const file = app.vault.getFiles().find((f: any) => f.extension === "md");
+      await app.workspace.getLeaf(true).openFile(file);
+      app.commands.executeCommandById("jekyll-publish:publish-current-note");
+      await new Promise((r) => setTimeout(r, 500));
+      const heading = document.querySelector(".modal-container h2");
+      return heading?.textContent ?? "";
+    });
+    expect(modalOpened).toContain("Publish to Jekyll");
+  } finally {
+    await obs.close();
+  }
+});