fix: CI branch filter, Prisma 7 schema compat, Node 22 enforcement

- CI triggers only on agent/next-postgres-shadcn branch
- Remove url from prisma schema (Prisma 7 uses prisma.config.ts)
- Add engines >= 22 to package.json and .nvmrc

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/ci.yml

@@ -2,6 +2,8 @@ name: CI
 
 on:
   push:
+    branches:
+      - agent/next-postgres-shadcn
 
 permissions:
   contents: read

.nvmrc

@@ -0,0 +1 @@
+22

workspace/next-app/package.json

@@ -41,6 +41,9 @@
     "tailwind-merge": "^3.5.0",
     "tw-animate-css": "^1.4.0"
   },
+  "engines": {
+    "node": ">=22.0.0"
+  },
   "devDependencies": {
     "@playwright/test": "^1.59.1",
     "@tailwindcss/postcss": "^4",

workspace/next-app/prisma/schema.prisma

@@ -10,5 +10,4 @@ generator client {
 
 datasource db {
   provider = "postgresql"
-  url      = env("DATABASE_URL")
 }