REFACTORED - Replace Prisma with Drizzle ORM

- Add lib/db (schema, postgres.js client, enums, seed, migrations) on Drizzle
- Rewrite all lib and admin action queries from Prisma to Drizzle
- Keep existing table/column names so no data migration is needed
- Preserve signed-cookie admin auth unchanged
- Map unique-violation handling from Prisma P2002 to SQLSTATE 23505
- Swap deps, scripts, Makefile, and Dockerfile from Prisma to Drizzle

Makefile

@@ -1,6 +1,4 @@
-.PHONY: start stop restart deploy logs build ps port health clean-orphans app-shell db-shell db-init db-migrate db-seed prisma-generate prisma-migrate help
-
-MIGRATION_NAME ?= init
+.PHONY: start stop restart deploy logs build ps port health clean-orphans app-shell db-shell db-init db-generate db-migrate db-push db-seed help
 
 start:
 	docker compose up -d --build
@@ -38,19 +36,19 @@ db-shell:
 	docker compose exec db psql -U postgres -d moh_sass
 
 db-init:
-	docker compose exec app sh -lc "npx prisma generate && npx prisma migrate deploy && npx prisma db seed"
+	docker compose exec app sh -lc "npm run db:migrate && npm run db:seed"
+
+db-generate:
+	docker compose exec app npm run db:generate
 
 db-migrate:
-	docker compose exec app npx prisma migrate deploy
+	docker compose exec app npm run db:migrate
+
+db-push:
+	docker compose exec app npm run db:push
 
 db-seed:
-	docker compose exec app npx prisma db seed
-
-prisma-generate:
-	docker compose exec app npx prisma generate
-
-prisma-migrate:
-	docker compose exec app npx prisma migrate dev --name $(MIGRATION_NAME)
+	docker compose exec app npm run db:seed
 
 health:
 	curl -sS https://mohfarawati.de/api/health
@@ -68,9 +66,9 @@ help:
 	@echo "  make clean-orphans    Remove orphaned old containers"
 	@echo "  make app-shell        Open shell in app container"
 	@echo "  make db-shell         Open PostgreSQL shell"
-	@echo "  make db-init          Generate client, apply migrations, run seed"
-	@echo "  make db-migrate       Apply prisma migrations"
+	@echo "  make db-init          Apply migrations and run seed (first run)"
+	@echo "  make db-generate      Generate a Drizzle migration from schema changes"
+	@echo "  make db-migrate       Apply pending Drizzle migrations"
+	@echo "  make db-push          Push schema directly (dev convenience)"
 	@echo "  make db-seed          Seed database data"
-	@echo "  make prisma-generate  Run prisma generate"
-	@echo "  make prisma-migrate   Create/apply dev migration"
 	@echo "  make health           Check app health endpoint via public domain"