Add clear command to Pi

pi/.pi/agent/extensions/clear.ts

@@ -0,0 +1,16 @@
+import type { ExtensionAPI } from "@earendil-works/pi-coding-agent";
+
+/**
+ * /clear — alias for /new.
+ *
+ * Starts a new session, discarding the current conversation history
+ * (the same behaviour as the built-in `/new`).
+ */
+export default function (pi: ExtensionAPI) {
+  pi.registerCommand("clear", {
+    description: "Start a new session (alias for /new)",
+    handler: async (_args, ctx) => {
+      await ctx.newSession();
+    },
+  });
+}