feat: add interactive ask-user extension

pi-ask-user/package.json

@@ -0,0 +1,47 @@
+{
+  "name": "pi-ask-user",
+  "version": "0.1.0",
+  "description": "A unified interactive question tool for Pi agents.",
+  "private": true,
+  "type": "module",
+  "license": "MIT",
+  "main": "./index.ts",
+  "exports": {
+    ".": "./index.ts"
+  },
+  "files": [
+    "index.ts",
+    "src",
+    "README.md",
+    "LICENSE",
+    "UPSTREAM.md"
+  ],
+  "pi": {
+    "extensions": [
+      "./index.ts"
+    ]
+  },
+  "scripts": {
+    "test": "node --test test/*.test.ts",
+    "check": "node --experimental-strip-types --check index.ts && node --test test/*.test.ts"
+  },
+  "peerDependencies": {
+    "@earendil-works/pi-coding-agent": "*",
+    "@earendil-works/pi-tui": "*",
+    "typebox": "*"
+  },
+  "peerDependenciesMeta": {
+    "@earendil-works/pi-coding-agent": {
+      "optional": true
+    },
+    "@earendil-works/pi-tui": {
+      "optional": true
+    },
+    "typebox": {
+      "optional": true
+    }
+  },
+  "engines": {
+    "node": ">=22.19.0"
+  }
+}