fix(validation): satisfy quality gate checks

- add root test script that runs mobile jest
- adjust hook usage to satisfy rules-of-hooks
- document validation commands for operators

package.json

@@ -7,13 +7,14 @@
     "apps/supabase",
     "packages/*"
   ],
-  "scripts": {
-    "dev": "turbo dev",
-    "build": "turbo build",
-    "lint": "turbo lint",
-    "clean": "turbo clean",
-    "typecheck": "turbo typecheck"
-  },
+  "scripts": {
+    "dev": "turbo dev",
+    "build": "turbo build",
+    "lint": "turbo lint",
+    "test": "npm --workspace apps/mobile test",
+    "clean": "turbo clean",
+    "typecheck": "turbo typecheck"
+  },
   "devDependencies": {
     "pg": "^8.17.2",
     "turbo": "^2.3.3",