initial project scaffold

Rust workspace with nomina-core (rename engine) and nomina-app (Tauri v2 shell).
React/TypeScript frontend with tabbed rule panels, virtual-scrolled file list,
and Zustand state management. All 9 rule types implemented with 25 passing tests.

crates/nomina-app/tauri.conf.json

@@ -0,0 +1,39 @@
+{
+  "$schema": "https://raw.githubusercontent.com/nicegram/nicetauri/v2/tooling/cli/schema.json",
+  "productName": "Nomina",
+  "version": "0.1.0",
+  "identifier": "com.nomina.app",
+  "build": {
+    "frontendDist": "../../ui/dist",
+    "devUrl": "http://localhost:5173",
+    "beforeDevCommand": "cd ../../ui && npm run dev",
+    "beforeBuildCommand": "cd ../../ui && npm run build"
+  },
+  "app": {
+    "windows": [
+      {
+        "title": "Nomina",
+        "width": 1200,
+        "height": 800,
+        "minWidth": 900,
+        "minHeight": 600,
+        "resizable": true,
+        "fullscreen": false
+      }
+    ],
+    "security": {
+      "csp": null
+    }
+  },
+  "bundle": {
+    "active": true,
+    "targets": "all",
+    "icon": [
+      "icons/32x32.png",
+      "icons/128x128.png",
+      "icons/128x128@2x.png",
+      "icons/icon.icns",
+      "icons/icon.ico"
+    ]
+  }
+}