feat: add hashline editing and TypeScript LSP

extensions/hashline-config.ts

@@ -0,0 +1,23 @@
+import { mkdirSync, readFileSync, renameSync, writeFileSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const BUNDLE_CONFIG_PATH = fileURLToPath(new URL("../config/pi-hashline-edit.json", import.meta.url));
+
+export function deployBundleHashlineConfig(agentDir: string): void {
+	const targetPath = join(agentDir, "hashline.json");
+	const bundledConfig = readFileSync(BUNDLE_CONFIG_PATH, "utf8");
+
+	try {
+		if (readFileSync(targetPath, "utf8") === bundledConfig) {
+			return;
+		}
+	} catch {
+		// Missing or unreadable target: replace it with the bundle-owned defaults.
+	}
+
+	mkdirSync(dirname(targetPath), { recursive: true });
+	const temporaryPath = `${targetPath}.my-pi.tmp`;
+	writeFileSync(temporaryPath, bundledConfig, "utf8");
+	renameSync(temporaryPath, targetPath);
+}