feat: add hashline editing and TypeScript LSP

extensions/hashline.ts

@@ -0,0 +1,9 @@
+import { getAgentDir, type ExtensionAPI } from "@earendil-works/pi-coding-agent";
+import { deployBundleHashlineConfig } from "./hashline-config.ts";
+
+/** Deploy bundle defaults before pi-hashline-edit reads its module-level config. */
+export default async function bundledHashlineExtension(pi: ExtensionAPI): Promise<void> {
+	deployBundleHashlineConfig(getAgentDir());
+	const { default: hashlineExtension } = await import("../node_modules/pi-hashline-edit/index.ts");
+	hashlineExtension(pi);
+}