Update authentication methods and UI components, remove redundant file

This commit accomplishes a few modifications including the elimination of `use-toast.tsx` due to redundancy. The authentication methods in `personal-accounts-server-actions.ts` were refactored to improve service integration and data handling. Additionally, UI components were updated for better readability and clarity. Cascading deletion was enabled in the `schema.sql` file for 'invited_by' reference.

packages/billing-gateway/package.json

@@ -14,20 +14,28 @@
     "./components": "./src/components/index.ts"
   },
   "peerDependencies": {
-    "zod": "^3.22.4",
-    "@kit/ui": "0.1.0",
-    "@kit/stripe": "0.1.0",
     "@kit/billing": "0.1.0",
-    "@kit/supabase": "^0.1.0",
     "@kit/shared": "^0.1.0",
-    "lucide-react": "^0.361.0",
-    "@supabase/supabase-js": "^2.39.8"
+    "@kit/stripe": "0.1.0",
+    "@kit/supabase": "^0.1.0",
+    "@kit/ui": "0.1.0",
+    "@supabase/supabase-js": "^2.39.8",
+    "lucide-react": "^0.363.0",
+    "zod": "^3.22.4"
   },
   "devDependencies": {
-    "@kit/prettier-config": "0.1.0",
+    "@kit/billing": "*",
     "@kit/eslint-config": "0.2.0",
+    "@kit/prettier-config": "0.1.0",
+    "@kit/shared": "*",
+    "@kit/stripe": "*",
+    "@kit/supabase": "*",
     "@kit/tailwind-config": "0.1.0",
-    "@kit/tsconfig": "0.1.0"
+    "@kit/tsconfig": "0.1.0",
+    "@kit/ui": "*",
+    "@supabase/supabase-js": "^2.39.8",
+    "lucide-react": "^0.363.0",
+    "zod": "^3.22.4"
   },
   "eslintConfig": {
     "root": true,