Feature Policies API + Invitations Policies (#375)

- Added Feature Policy API: a declarative system to enable/disable/modify default behavior in the SaaS kit
- Team invitation policies with pre-checks using the Feature Policy API: Invite Members dialog now shows loading, errors, and clear reasons when invitations are blocked
- Version bump to 2.16.0 and widespread dependency updates (Supabase, React types, react-i18next, etc.).
- Added comprehensive docs for the new policy system and orchestrators.
- Subscription cancellations now trigger immediate invoicing explicitly

apps/dev-tool/package.json

@@ -8,11 +8,11 @@
     "format": "prettier --check --write \"**/*.{js,cjs,mjs,ts,tsx,md,json}\""
   },
   "dependencies": {
-    "@ai-sdk/openai": "^2.0.34",
+    "@ai-sdk/openai": "^2.0.38",
     "@faker-js/faker": "^10.0.0",
     "@hookform/resolvers": "^5.2.2",
     "@tanstack/react-query": "5.90.2",
-    "ai": "5.0.51",
+    "ai": "5.0.56",
     "lucide-react": "^0.544.0",
     "next": "15.5.4",
     "nodemailer": "^7.0.6",
@@ -32,7 +32,7 @@
     "@tailwindcss/postcss": "^4.1.13",
     "@types/node": "^24.5.2",
     "@types/nodemailer": "7.0.1",
-    "@types/react": "19.1.13",
+    "@types/react": "19.1.15",
     "@types/react-dom": "19.1.9",
     "babel-plugin-react-compiler": "19.1.0-rc.3",
     "pino-pretty": "13.0.0",