feat: Fase 2 - Integração Stripe

- Biblioteca Stripe configurada
- API de checkout para criar sessões de pagamento
- Webhook para processar eventos (subscription created/updated/deleted)
- Página de planos com os 3 níveis (Essencial R97, Completo R97, Intensivo R97)
- Páginas de sucesso e cancelamento
- Efeito de confete na confirmação

package-lock.json

@@ -10,18 +10,22 @@
       "dependencies": {
         "@auth/prisma-adapter": "^2.11.1",
         "@prisma/client": "^6.19.2",
+        "@stripe/stripe-js": "^8.7.0",
         "bcrypt": "^6.0.0",
+        "canvas-confetti": "^1.9.4",
         "framer-motion": "^12.33.0",
         "lucide-react": "^0.563.0",
         "next": "16.1.6",
         "next-auth": "^5.0.0-beta.30",
         "prisma": "^6.19.2",
         "react": "19.2.3",
-        "react-dom": "19.2.3"
+        "react-dom": "19.2.3",
+        "stripe": "^20.3.1"
       },
       "devDependencies": {
         "@tailwindcss/postcss": "^4",
         "@types/bcrypt": "^6.0.0",
+        "@types/canvas-confetti": "^1.9.0",
         "@types/node": "^20",
         "@types/react": "^19",
         "@types/react-dom": "^19",
@@ -1376,6 +1380,15 @@
       "integrity": "sha512-l2aFy5jALhniG5HgqrD6jXLi/rUWrKvqN/qJx6yoJsgKhblVd+iqqU4RCXavm/jPityDo5TCvKMnpjKnOriy0w==",
       "license": "MIT"
     },
+    "node_modules/@stripe/stripe-js": {
+      "version": "8.7.0",
+      "resolved": "https://registry.npmjs.org/@stripe/stripe-js/-/stripe-js-8.7.0.tgz",
+      "integrity": "sha512-tNUerSstwNC1KuHgX4CASGO0Md3CB26IJzSXmVlSuFvhsBP4ZaEPpY4jxWOn9tfdDscuVT4Kqb8cZ2o9nLCgRQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=12.16"
+      }
+    },
     "node_modules/@swc/helpers": {
       "version": "0.5.15",
       "resolved": "https://registry.npmjs.org/@swc/helpers/-/helpers-0.5.15.tgz",
@@ -1677,6 +1690,13 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/canvas-confetti": {
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/@types/canvas-confetti/-/canvas-confetti-1.9.0.tgz",
+      "integrity": "sha512-aBGj/dULrimR1XDZLtG9JwxX1b4HPRF6CX9Yfwh3NvstZEm1ZL7RBnel4keCPSqs1ANRu1u2Aoz9R+VmtjYuTg==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/estree": {
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.8.tgz",
@@ -1702,7 +1722,7 @@
       "version": "20.19.32",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-20.19.32.tgz",
       "integrity": "sha512-Ez8QE4DMfhjjTsES9K2dwfV258qBui7qxUsoaixZDiTzbde4U12e1pXGNu/ECsUIOi5/zoCxAQxIhQnaUQ2VvA==",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT",
       "dependencies": {
         "undici-types": "~6.21.0"
@@ -2748,6 +2768,16 @@
       ],
       "license": "CC-BY-4.0"
     },
+    "node_modules/canvas-confetti": {
+      "version": "1.9.4",
+      "resolved": "https://registry.npmjs.org/canvas-confetti/-/canvas-confetti-1.9.4.tgz",
+      "integrity": "sha512-yxQbJkAVrFXWNbTUjPqjF7G+g6pDotOUHGbkZq2NELZUMDpiJ85rIEazVb8GTaAptNW2miJAXbs1BtioA251Pw==",
+      "license": "ISC",
+      "funding": {
+        "type": "donate",
+        "url": "https://www.paypal.me/kirilvatev"
+      }
+    },
     "node_modules/chalk": {
       "version": "4.1.2",
       "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.2.tgz",
@@ -6585,6 +6615,23 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/stripe": {
+      "version": "20.3.1",
+      "resolved": "https://registry.npmjs.org/stripe/-/stripe-20.3.1.tgz",
+      "integrity": "sha512-k990yOT5G5rhX3XluRPw5Y8RLdJDW4dzQ29wWT66piHrbnM2KyamJ1dKgPsw4HzGHRWjDiSSdcI2WdxQUPV3aQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=16"
+      },
+      "peerDependencies": {
+        "@types/node": ">=16"
+      },
+      "peerDependenciesMeta": {
+        "@types/node": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/styled-jsx": {
       "version": "5.1.6",
       "resolved": "https://registry.npmjs.org/styled-jsx/-/styled-jsx-5.1.6.tgz",
@@ -6922,7 +6969,7 @@
       "version": "6.21.0",
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
       "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT"
     },
     "node_modules/unrs-resolver": {