feat(initial): scaffold @push.rocks/smartchat with core, CLI, and web layers

Three-layer architecture built on @push.rocks/smartagent:
- ts/ — ChatSession wrapping runAgent() with conversation state management
- ts_cli/ — ink-based terminal chat TUI (React.createElement, no JSX)
- ts_web/ — Lit web components (smartchat-window, smartchat-message, smartchat-input)

npmextra.json

@@ -0,0 +1,27 @@
+{
+  "gitzone": {
+    "projectType": "npm",
+    "module": {
+      "githost": "code.foss.global",
+      "gitscope": "push.rocks",
+      "gitrepo": "smartchat",
+      "description": "Interactive chat interfaces for AI agents — CLI TUI and web components, built on @push.rocks/smartagent.",
+      "npmPackagename": "@push.rocks/smartchat",
+      "license": "MIT",
+      "projectDomain": "push.rocks"
+    }
+  },
+  "npmci": {
+    "npmGlobalTools": [],
+    "npmAccessLevel": "public"
+  },
+  "@git.zone/cli": {
+    "release": {
+      "registries": [
+        "https://verdaccio.lossless.digital",
+        "https://registry.npmjs.org"
+      ],
+      "accessLevel": "public"
+    }
+  }
+}