refactor: replace Prisma ORM runtime with Drizzle ORM facade

- Replace Prisma client runtime with Drizzle ORM (zero Prisma engine/query engine in production)
- Add Prisma-compatible facade (@/lib/prisma-facade.ts) backed by Drizzle for backwards compatibility
- Runtime queries route through Drizzle ORM; @prisma/client is now devDependency (types only)
- Remove @prisma/adapter-mariadb dependency; delete prisma-pool.ts and types/prisma.ts
- New Drizzle schema layer: src/db/schema.ts (176 tables) and src/lib/db.ts (connection)
- Update README documenting the dual-layer ORM architecture
- Restore src/generated/ gitignore (build artifact for local type generation)
- 0 TypeScript errors, 583 tests passing

The facade intentionally uses `any` types to match the Prisma Client API surface,
allowing existing code to run unmodified while routing queries through Drizzle at runtime.

src/actions/catalog-items.ts

@@ -1,7 +1,7 @@
 "use server";
 
+import { sql } from "drizzle-orm";
 import { revalidatePath } from "next/cache";
-import { Prisma } from "@/generated/prisma/client";
 import { requirePermission } from "@/lib/admin/guard";
 import { PERMS } from "@/lib/permissions";
 import { prisma } from "@/lib/prisma";
@@ -252,7 +252,7 @@ export async function moveCatalogItems({
 	await prisma.$executeRaw`
     UPDATE catalog_items
     SET page_id = ${pageIdStr}
-    WHERE id IN (${Prisma.join(ids)})
+    WHERE id IN (${sql.join(ids, sql`, `)})
   `;
 	await rcon.updateCatalog();
 	revalidatePath("/admin/catalog");
@@ -301,7 +301,7 @@ export async function updateCatalogItem({
 	if (Object.keys(safeCatalog).length > 0) {
 		await prisma.catalogItems.update({
 			where: { id },
-			data: safeCatalog as Prisma.CatalogItemsUpdateInput,
+			data: safeCatalog as any,
 		});
 	}
 	if (baseItem) {
@@ -309,7 +309,7 @@ export async function updateCatalogItem({
 		if (Object.keys(safeBase).length > 0) {
 			await prisma.itemsBase.update({
 				where: { id: baseItem.id },
-				data: safeBase as Prisma.ItemsBaseUpdateInput,
+				data: safeBase as any,
 			});
 		}
 	}