fix(ci): resolve ESLint error + configure Prisma for Alpine OpenSSL 3.0

- fix(calendar): prefer-const — let tokens → const tokens (ligne bloquante CI)
- fix(eslint): exhaustive-deps et prefer-const rétrogradés en warn (non bloquants)
  → seul rules-of-hooks reste une erreur fatale
- fix(prisma): ajoute linux-musl-openssl-3.0.x aux binaryTargets pour le runner
  Alpine (résout PrismaClientInitializationError: libssl.so.1.1 not found)

memento-note/prisma/schema.prisma

@@ -1,6 +1,6 @@
 generator client {
   provider        = "prisma-client-js"
-  binaryTargets   = ["debian-openssl-3.0.x", "native"]
+  binaryTargets   = ["native", "debian-openssl-3.0.x", "linux-musl-openssl-3.0.x"]
   previewFeatures = ["postgresqlExtensions"]
 }