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/lib/services/catalog-items-loader.ts

@@ -1,6 +1,6 @@
 import { promises as fs } from "node:fs";
-import { Prisma } from "@/generated/prisma/client";
-import { prisma } from "@/lib/prisma";
+import { asc, sql } from "drizzle-orm";
+import { CatalogPages, db } from "@/lib/db";
 import { getFurnitureDataPath } from "@/lib/services/furni-data";
 import { getHabboGamedataHotel } from "@/lib/services/habbo-gamedata-hotel";
 
@@ -139,11 +139,11 @@ export async function loadCatalogItemsData(
 	// Load items via raw query to work around pageId Int vs VARCHAR mismatch
 	const pageIdStr = String(pageId);
 	// CAST: live Habbo DBs often store page_id as VARCHAR while Prisma maps Int.
-	const rawItems = await prisma.$queryRaw<Array<Record<string, unknown>>>`
+	const [rawItems] = (await db.execute(sql`
     SELECT * FROM catalog_items
     WHERE CAST(page_id AS CHAR) = ${pageIdStr}
     ORDER BY order_number ASC, id ASC
-  `;
+  `)) as unknown as [Record<string, unknown>[], unknown[]];
 	const items: RawItem[] = rawItems.map((r: Record<string, unknown>) => ({
 		id: Number(r.id),
 		itemIds: String(r.item_ids ?? ""),
@@ -164,13 +164,18 @@ export async function loadCatalogItemsData(
 	}));
 
 	const [allPages, interactionTypesRaw, gamedataHotel] = await Promise.all([
-		prisma.catalogPages.findMany({
-			orderBy: { caption: "asc" },
-			select: { id: true, caption: true },
-		}),
-		prisma.$queryRaw<Array<{ interaction_type: string }>>`
+		db
+			.select({ id: CatalogPages.id, caption: CatalogPages.caption })
+			.from(CatalogPages)
+			.orderBy(asc(CatalogPages.caption)),
+		db
+			.execute(sql`
       SELECT DISTINCT interaction_type FROM items_base ORDER BY interaction_type ASC
-    `,
+    `)
+			.then(
+				(result) =>
+					(result as unknown as [{ interaction_type: string }[], unknown[]])[0],
+			),
 		getHabboGamedataHotel(),
 	]);
 
@@ -192,46 +197,46 @@ export async function loadCatalogItemsData(
 	];
 
 	// Raw query to work around ENUM('0','1') columns returning numeric values.
-	// baseItemIds is built from numeric splits + filter(n > 0); joined via Prisma.join.
-	const baseItems: BaseItem[] =
+	// baseItemIds is built from numeric splits + filter(n > 0); joined via sql.join.
+	const [baseItemRows] =
 		baseItemIds.length > 0
-			? (
-					await prisma.$queryRaw<Array<Record<string, unknown>>>`
+			? ((await db.execute(sql`
             SELECT id, sprite_id, public_name, item_name, type, width, length,
                    stack_height, allow_stack, allow_sit, allow_lay, allow_walk,
                    allow_gift, allow_trade, allow_recycle, allow_marketplace_sell,
                    allow_inventory_stack, interaction_type, interaction_modes_count,
                    vending_ids, customparams, effect_id_male, effect_id_female,
                    clothing_on_walk
-            FROM items_base WHERE id IN (${Prisma.join(baseItemIds)})
-          `
-				).map((r) => ({
-					id: Number(r.id),
-					spriteId: Number(r.sprite_id),
-					publicName: String(r.public_name ?? ""),
-					itemName: String(r.item_name ?? ""),
-					type: String(r.type ?? "s"),
-					width: Number(r.width) || 1,
-					length: Number(r.length) || 1,
-					stackHeight: Number(r.stack_height) || 0,
-					allowStack: Number(r.allow_stack ?? 0),
-					allowSit: Number(r.allow_sit ?? 0),
-					allowLay: Number(r.allow_lay ?? 0),
-					allowWalk: Number(r.allow_walk ?? 0),
-					allowGift: Number(r.allow_gift ?? 1),
-					allowTrade: Number(r.allow_trade ?? 1),
-					allowRecycle: Number(r.allow_recycle ?? 0),
-					allowMarketplaceSell: Number(r.allow_marketplace_sell ?? 0),
-					allowInventoryStack: Number(r.allow_inventory_stack ?? 1),
-					interactionType: String(r.interaction_type ?? "default"),
-					interactionModesCount: Number(r.interaction_modes_count) || 2,
-					vendingIds: String(r.vending_ids ?? "0"),
-					customparams: String(r.customparams ?? ""),
-					effectIdMale: Number(r.effect_id_male) || 0,
-					effectIdFemale: Number(r.effect_id_female) || 0,
-					clothingOnWalk: String(r.clothing_on_walk ?? ""),
-				}))
-			: [];
+            FROM items_base WHERE id IN (${sql.join(baseItemIds, sql`, `)})
+          `)) as unknown as [Record<string, unknown>[], unknown[]])
+			: [[], []];
+
+	const baseItems: BaseItem[] = baseItemRows.map((r) => ({
+		id: Number(r.id),
+		spriteId: Number(r.sprite_id),
+		publicName: String(r.public_name ?? ""),
+		itemName: String(r.item_name ?? ""),
+		type: String(r.type ?? "s"),
+		width: Number(r.width) || 1,
+		length: Number(r.length) || 1,
+		stackHeight: Number(r.stack_height) || 0,
+		allowStack: Number(r.allow_stack ?? 0),
+		allowSit: Number(r.allow_sit ?? 0),
+		allowLay: Number(r.allow_lay ?? 0),
+		allowWalk: Number(r.allow_walk ?? 0),
+		allowGift: Number(r.allow_gift ?? 1),
+		allowTrade: Number(r.allow_trade ?? 1),
+		allowRecycle: Number(r.allow_recycle ?? 0),
+		allowMarketplaceSell: Number(r.allow_marketplace_sell ?? 0),
+		allowInventoryStack: Number(r.allow_inventory_stack ?? 1),
+		interactionType: String(r.interaction_type ?? "default"),
+		interactionModesCount: Number(r.interaction_modes_count) || 2,
+		vendingIds: String(r.vending_ids ?? "0"),
+		customparams: String(r.customparams ?? ""),
+		effectIdMale: Number(r.effect_id_male) || 0,
+		effectIdFemale: Number(r.effect_id_female) || 0,
+		clothingOnWalk: String(r.clothing_on_walk ?? ""),
+	}));
 
 	const baseItemMap = Object.fromEntries(baseItems.map((b) => [b.id, b]));