feat: upgrade major dependencies to latest versions

- Prisma 6.19 → 7.7 (driver adapter pattern, prisma.config.ts)
- TypeScript 5.9 → 6.0 (ignoreDeprecations, CSS type declarations)
- Vitest 3.2 → 4.1
- Pino 9.14 → 10.3
- @types/node 22.x → 25.x

All 307 tests pass, typecheck clean, build succeeds.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

prisma/prisma.config.ts

@@ -0,0 +1,14 @@
+import path from 'node:path';
+import { defineConfig } from 'prisma/config';
+
+export default defineConfig({
+  earlyAccess: true,
+  schema: path.join(__dirname, 'schema.prisma'),
+  migrate: {
+    async development() {
+      return {
+        url: process.env.DATABASE_URL!,
+      };
+    },
+  },
+});